The Ramsar Convention on Wetlands

Ramsar site management plans -- Bulgaria, Srebarna (file 6)


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BULGARIAN ACADEMY OF SCIENCES CENTRAL LABORATORY OF GENERAL ECOLOGY

MANAGEMENT PLAN OF THE SREBARNA BIOSPHERE RESERVE

Sofia, 2000


Part 3: ACTION PLAN

3.1 Work plan

From a conservation point of view the surface area of the Biosphere Reserve Srebarna is rather limited. As a consequence the Reserve is in an almost permanent unstable transitional state which leads to processes of degradation, provoked by the natural succession and by the global and local human impact on environment.

The Biosphere Reserve Srebarna Management Plan is in compliance with the Bulgarian Protected Areas Act (1999). According to the Protected Areas Act the Reserve pertains to the category of the Maintained Reserves and the only activities that may be performed within its territory are: those for the protection of the Reserve proper; scientific research visits; passing of people along marked paths, including educational tours; collection of seeds, wild plants and animals for the purposes of research studies or for restoring their populations in former localities; implementation of measures for maintaining, directing, regulating or restoring. According to ordinance No. RD 367 of 15 October 1999 of the Ministry of Environment and Waters, published in the State Gazette No. 97 of 1999, prior to this Management Plan becoming operational, the following activities shall be permitted in the Reserve area: mowing of reed; maintaining the water conditions; sport fishing at certain specified places; fish stocking; population control of Jackals, Raccoon-like Dogs and Wild Boars outside the birds breeding season; maintaining birds nesting grounds; protection of the Dalmatian Pelican colony.

In compliance with this new, for the Bulgarian conservation practice, category of protected areas it should be possible to undertake active measures to mitigate and/or completely stop the negative human or natural impact (including the impact from the global changes of the environment) on the Reserve ecosystems not only by managing processes in the neighbouring areas but also by exerting direct influence on the habitats and populations of the valuable species of the region's flora and fauna. Generally speaking, the work programmes and the projects contained in this Management Plan should bring about an effective conservation and restoration of the most valuable properties of the wetland: the richness of its biodiversity, its naturalness and rareness as well as to diminish as much as possible its ecosystems vulnerability. It is absolutely necessary to simultaneously preserve and even enhance the social, cultural and economic values of the Reserve by making the best use of it for educational, recreational and scientific purposes. The priority goal in achieving these objectives should be the building-up of environmental and conservation awareness and education of the local population, particularly by cultivating respect not only for this particular protected area but for the wildlife in general. The Srebarna BR opens great but still not fully employed opportunities for extensive scientific research which may lead to improved management skills and to an increase of human knowledge on the structure and function of the wetlands.

3.1.1. Management options

3.1.1.1. Habitat management

3.1.1.2. Species management

3.1.1.3. Usage (App. 1, Map 12).

The right for fishing and servicing visitors with row-boats shall be conceded only to corporate or physical bodies from the villages of Srebarna, Vetren and the village of Aidemir neighbourhood Tataritsa.

It is also suggested to have fishing for sport (angling) for a fee at certain places along the lake west shore and along the part of the Danube bank that is within the Reserve boundaries (App. 1, Map 13). Angling should be free for villagers from Srebarna, Vetren and Tataritsa.

Ten percent of the revenue from bringing all these activities about (including the sale of tickets at the Natural History Museum/Visitors' Centre) should go for the Reserve. To this end it shall be necessary to work out and publish a special ordinance.

It is also envisaged to have domestic animals (pigs and goats excepted) graze in the grasslands west and southwest of the Reserve (App. 1, Map 13).

Grass for hay shall be mowed in the following parts of the Reserve (App.1, Map 13):

In other parts of the Reserve, where there are zones of partially open access and open access, mowing may be allowed after written permission from the Reserve Administration is obtained.

It is envisaged to mow the Greater Reedmace (Typha latifolia) after obtaining written permission to do so from the Reserve Administration for the zones of partially open access and open access.

Temporary bee-gardens may be set up in the zones of partially open access and open access only after obtaining a written permission from the Reserve Administration. No permanent buildings shall be erected there.

3.1.1.4. Access (App. 1, Map 13)

The status of maintained Reserve allows for partially lifting the now severe restrictions regarding the access to the Reserve and for forming within it four new zones. In all four of these the lighting of fires, pitching tents, shooting, hunting (with the exception of organised shooting parties for jackals, foxes, wild boars and raccoon-like dogs in winter), disposal of all kinds of wastes, digging for sand, clay and soil, mowing of grass, reed, reedmace, bulrush, wicker, etc. shall be banned with the exception of specially designated places where all these activities may be carried out.

Closed or "No access" zone (with the exception for scientific purposes and monitoring). This zone is proposed to encompass the breeding colonies, water bodies in the western and eastern part of the Reserve, the two reed-beds and the island of Devnya in the Danube. Access shall be allowed only for performing scientific investigations, monitoring activities, for fighting fires and for the purposes of the Reserve protection. In the Pelicans' breeding colony one may carry out activities for improving the breeding conditions and to protect the colony from land predators (these activities are described in detail in Section 3.2.2. "Management of Species"). Outside the breeding season (August through January) it is possible to undertake dredging the bottom of the Pelican Pool. It shall be allowed, in case of proved necessity, to control the numbers of jackals, wild boars, foxes, raccoon-like dogs and magpies within this zone. Such an activity should be carried out only in the period of December-January and only if the lake has frozen;

Restricted access zone. The proposed condition of restricted access refers to the open water area near the jetty, called "Pristana" and for almost the whole of the central open water area of the lake. Sojourn or entering that zone shall be allowed for:

Partially open access zone. The proposed condition for a partially open access for anglers refers to the part of the southwest lakeshore, the stretch of the Danube bank that is within the Reserve and the banks of the connecting canal from its mouth into the river to the northern sluice. Access will be free only for inhabitants of the villages of Vetren, Srebarna and Tataritsa. Angling in this zone shall be subject to the regulations valid for the rest of the country. The same conditions are proposed for the part of the Reserve that includes the eastern slopes of the hill Kodzha Bair where local people shall be allowed to graze their cows, horses, donkeys, sheep and goats (pigs and goats excepted) all year round as well as to mow the grass for hay.

Open access zone. Open access is envisaged for the dirt roads in the Reserve, namely:

The main approach to the Reserve is from the northern part of the village of Srebarna where the Reserve Administration building and the Natural History Museum stand. There is a small jetty for the boats but the place lacks any other facilities whatsoever. The area around the jetty is much untended and obviously needs some palpable improvements. There are other approaches to the Reserve from the villages of Vetren and Aidemir and from the place "Kalnezha".

At all those points of access to the Reserve there should be information and marking panels erected and fixed. On both sides of the dike erected to protect the former cultivated areas in the northern part from flooding, there should be concrete beams forming a barrier in order to put an end of the undesirable traffic of vehicles.

3.1.1.5. Education, interpretation and communication

Active publicity:

3.1.1.6. Research

Specialized facilities:

3.2. Work programmes

The Action Plan as a part of the "Reserve Srebarna Management Plan" has been developed in compliance with the preliminary specified structure (see Part 3.2.3) After operational objectives were identified, one or more work-programmes have been worked out for the achievement of each objective. These programmes have to correspond to a certain management strategy, and, respectively, a group of projects were developed, related to the implementation of a given strategy. Each one of the projects is by itself a specific task, subordinated to a concretely identified operational objective.

It should be born in mind that the Management Plan here presented is a frame that encompasses its authors view of the Management Plan as necessary actions leading to better conservation and restoration of the Reserve in the coming 15 to 20 years. That there is a certain programme or a project does not automatically mean that it will become operative even after the Management Plan has been approved and sanctioned by the Minister of Environment & Waters. Any individual project should pass through the phase of preliminary designing, part of which is the elaboration of a Technical and Economic Assessment (TEA), Working Design and Environment Impact Assessment (EIA). Only then the project can have a final assessment of its ecological expedience, social and economic impact, cost/efficiency ratio and, last but not least, availability of funds.

Projects of highest priority have been developed as a preliminary design and presented in Part 3.3. Part of the projects presented below either have already been executed or are being currently executed by the authors of the Management Plan in cooperation with other organizations.

3.2.1. Identifying priorities

After the works presented have been arranged according to the logic of the set operational objectives, then the necessity has arisen to develop priority criteria in executing the individual projects. The following priority scheme has been proposed:

It is then necessary to lay over this system of priorities the principle of cost/effect ratio, irrespective of the difficulties related to making such evaluations with regard to natural sites. Another operative approach is to have projects of high cost/effect ratio, short term of execution and low absolute price, scheduled for an earlier execution. By using this system, it is possible to arrange part of the projects as urgent:

High priority projects to be urgently executed

(in the parenthesis is the number of the project according to the Work programmes)

Project: Urgent setting up of an effective system for diurnal supervision and control of the north sluice. (8.1.1).

Project: Urgent setting up of an effective system for supervision and control against illegal fishing on a greater scale. Exerting greater control on the observation of restrictions during the spawning season. (8.1.2).

Project: Compiling a temporary manual for managing sluices on the canal connecting the lake with the Danube based on the Danube and lake water levels. The project is implemented. (1.1.1).

Project: Creating an expert's information system tied to the Danube water level in order to control the water conditions in the Reserve by means of controlling the two sluices built in 1994. Phase II: computerized expert's system. (1.1.2).

Project: Devising of an emergency action plan for cases of natural calamity or man-induced environmental disasters affecting the Reserve, its watershed, and the river Danube; including emissions in the atmosphere as well. Elaboration of a programme, in combination with Projects 1.1.1 and 1.1.3., for preventing and reducing pollution caused by the Danube water entering the Reserve. (3.2.1).

Project: Organising and holding preliminary discussions on the Management Plan (The parts of this project so far having been fulfilled: i) a discussion on green and rural tourism in Srebarna ii) a workshop on the place of Srebarna in the system of European Nature Reserves, iii) preliminary public discussion of the Management plan in the village of Drebarna). (5.3.1).

Project*: Carrying out practical activities for the Dalmatian Pelican Conservation (please, see Part 3.3.).The project is being currently executed. (4.3.1).

Project*: Stimulating the development of green and rural tourism activities in the villages and towns in the Reserve vicinity. (5.1.1).

Project: Improving the area around the jetty (called 'Pristana') by building there parking lots, a fountain, WC facilities and in the area of the fountain called 'Todoranka'; marking (by blazing or otherwise) hiker's trails including an eco-path around the Reserve; building hides and sites for watching birds and other wildlife; for bird- and animal watchers. (6.1.1).

3.2.2. Scenarios for the implementation of the Management Plan

In spite of the seeming explicitness (invariability) in the procedure of presenting the individual projects, the liberty to foresee and choose the best possibility is intrinsic to the manner of implementing the very Management Plan:

Here below it is shown how each specific Operational (Realistic) Objective - represented by a group of Work programmes - could have a simplified scheme of possible scenarios with a bearing to the implementation or non-implementation of certain programmes attached to it. A greater specificity of the presentation will cause the scenarios to increase in geometrical progression. Such an approach will become technically impossible and logically senseless.

3.2.3. Action Plan

The Action Plan is presented as follow:

Operational objective - achieved through the execution of Work Programmes, which in turn have been determined by specific strategies – every programme includes a system of Projects as shown on the example below

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 3.2.4. Description of individual programmes and projects

On the whole 77 projects have been included in 22 work programmes and 8 operational objective. The projects are divided as follows:

1. Operational objective: to introduce and maintain hydrologic conditions, as close as possible to natural ones, which are optimal for the reserve ecosystems.

Scenarios for a probable development: Non-execution, or identifying irrational priorities in executing programmes 1.1 and 1.2 can lead to: inefficient use of the medium-high or high water levels of the Danube, critical during the natural dry spells that usually last 10 to 12 years. Srebarna Lake optimum water level is determined by the best possible conditions for the development of individual groups of organisms and, naturally, cannot be one and the same for all of them. According to the authors of the Management Plan, when there is an uncertainty regarding the dynamics of hydrological conditions for a period of many years (relating to the risk of droughts) the optimum water level is the maximum one (see 1.14.7), because then the risk of excessive reduction of the lake volume and depth will be the least. Non-execution of projects, related to the lake water catchment area can lead to waste of water or, on the contrary, to unjustified measures for restricting consumption of water by local people.

1.1. Work Programme: Increase of the inflow of water into the lake.

1.1.1. +++ Project: Compiling a temporary manual for managing sluices on the canal connecting the lake with the Danube based on the Danube and lake water levels. Objective: To make the best use of the Danube waters until an expert's information system is created (project 1.1.2). The project is implemented.

1.1.2. + Project: Creating an expert's information system tied to the Danube water level in order to control the water conditions in the Reserve by the means of controlling the two sluices built in 1994. Phase II: computerized expert's system. Objective: To make the best use in the long-term of the high Danube water levels.

1.1.3. Project: Creating a scientific- and expert's information system for assessing the hydrologic processes in the lake and its water catchment area in order to determine the water balance and water conditions in the Reserve and how they affect its ecosystems. Objective: To determine the optimum water conditions for the Reserve.

1.1.4. + Project: Introducing a system for the optimal use of the water from the Reserve catchment area Objective: To make maximum use of the Reserve water catchment area for increasing the water inflow but at the same time taking into consideration the prevailing social and economic conditions in the region.

1.2. Work programme: Reduction of water spending in the Reserve and its vicinity.

1.2.1.+++ Project*: Reconstructing and repairing the two sluices on the connecting canal built in 1994. Objective: To reduce the loss of water in the northern part of the Reserve due to leakage of sluices, especially the northern one. To preserve shallow temporary pools and other water bodies in the northern part of the Reserve until the breeding season is over. To create new habitats for rare and endangered waterfowl and other aquatic species of birds.

1.2.2. ++ Project: Eliminating the plantations of hybrid poplar within the Reserve and its buffer zone. Objective: To reduce the loss of water through evapotranspiration and to help increase the lake water volume.

2. Operational objective: To stop the succession and to reduce the level of eutrophication in the Reserve in order to maintain optimal condition for the ecosystems and for the globally threatened species in the Reserve.

Scenarios for a probable development: Non-execution of projects and programmes, aimed at preventing further increase/acceleration of the eutrophication and succession in the Reserve, will lead to increasing the risk of overgrown and siltation, phytoplankton blooms (including blooms of poisonous species) and excessive growth of macrophytes, reed in particular. All such scenarios will most adversely affect the Reserve biodiversity. It suffices to compare the Reserve critical state in the period 1991 through 1993 (Michev et al., 1998) and Parts 1.14.6, 1.16.2.5 of the Management Plan. The probability to have the lake turned into a marsh in a very short time and to have it completely overgrown has been well illustrated by the history of the nearby Garvan Marsh, the degradation of which took only several years to become a fact.

2.1.Work programme: Reduction of the influx of nitrogen and phosphorus compounds into the lake.

2.1.1. ++ Project: Working out of a scientifically based programmes for priority actions to reduce the number and intensity of the nutrients sources in the lake catchment area. Objective: To identify the priority in starting the programme’s subsequent projects.

2.1.2. ++ Project: Introducing organic farming within the Reserve catchment area. Objective: To reduce the fertilizer import in the Reserve catchment area and consecutively to reduce the amount of nutrients leached from the soil.

2.1.3. ++ Project: Assessing the impact of the sewage waters from Srebarna village on the nutrient influx in the Srebarna Lake. Objective: To assess the need of sewerage for the village from an environmental point of view.

2.1.4. + Project: Optimizing the nutrients influx at the time of the Danube water entering the lake by switching of a special module to the information system of Project 1.1.2. Objective: To reduce the nutrient influx and the accumulation of nitrogen and phosphorus contained in the Danube water entering the Reserve.

2.1.5. + Project: Introducing the modern farming practice within the Reserve catchment area. Objective: To introduce an optimal use of fertilizers, to reduce leaching of soil in order to decrease the nutrient influx in the lake.

2.2 Work Programme: Reduction of the nitrogen and phosphorus pools in the Reserve.

2.2.1. +++ Project* : Dredging the lake bottom sediments. Objective: To cause the biologically available nitrogen and phosphorus pools in the lake to deplete thus reducing the phytoplankton production and partially that of the reed-bed. Dredging the lake bottom will also stop/reverse the ecological succession.

2.2.2. +++ Project*: Periodically removing part of the reed growth along the rim of the lake's open water area. Objective: To terminate the accumulation of reed biomass in the lake and to reduce correspondingly the rate of eutrophication and to stop/revert the succession, which is the major cause for the lake siltation and for having the open water areas overgrown with reed. It has to be implemented with project 2.2.1.

2.2.3. ++ Project: Regularly removing of a part of the fish biomass by introducing of strictly regulated commercial fishing based on the most abundant species of fish. Objective: To reduce a part of the easily bio logically available nutrients pool in the lake. Additionally the project will have some social effects in terms of returning to the traditional use of resources.

3. Operational objective: Reduction of the influx of pollutants and eroded soil into the Reserve.

Scenarios for a probable development: Data on the concentrations of persistent chemical pollutants show that, for the time being, the Reserve has not been affected by chemical pollution. Non-execution of projects and programmes 3.1 and 3.2 will increase the risk of potential pollution, which practically will irreversibly and harmfully affect the Reserve's living communities.

3.1. Work Programme: Reduction of the influx of pollutants into the Reserve.

3.1.1. +++ Project: Devising of an emergency action plan for cases of natural calamity or man-induced environmental disasters affecting the Reserve, its watershed, and the Danube; including emissions in the atmosphere as well. To elaborate a programme, in combination with Projects 1.1.1. and 1.1.3., for preventing and reducing pollution caused by the Danube water entering the Reserve. Objective: To protect the Reserve in case of emergency pollution by devising a specific schedule and an action plan, and assigning personal responsibilities for their observation and execution.

3.1.2. ++ Project: Making an inventory of all sources of pollution in the Reserve water catchment area. Working out a programme for managing the emissions of pollutants. Objective: To create the pre-requisites for cutting down the influx of toxic substances into the Reserve.

3.1.3. ++ Project: Elaborating of a programme for the wise use of pesticides in cultivated lands around the Reserve. See also Projects 2.1.3 and 2.1.4 as a basis for making up such a programme. Objective: To reduce toxic effects on biological species and the changes this may cause to the affected native communities.

3.2. Work Programme: Reduction of the transportation/import of suspended particulate matter into the lake.

3.2.1. ++ Project: Undertaking anti-erosion measures on the steep slopes of the west and south lakeshores. Objective: To reduce the inflow of particulate matter in the lake thus putting an end to the siltation. To preserve the area's natural outlook.

3.2.2. + Project: Introducing anti-erosion techniques in land cultivation within the framework of projects 2.1.2. and 2.1.5. Objective: To reduce the inflow of particulate matter into the lake thus putting and end to its siltation.

+ Project: Constructing hydraulic installations at the entrance of the canal connecting the lake with the Danube for reducing the particulate matter influx to the lake with the Danube water entering the Reserve. Objective: To reduce the inflow of particulate matter into the lake thus putting an end to its siltation.

4. Operational objective: Conservation and restoration of the reserve biodiversity.

Scenarios for a probable development: programmes 4.1 to 4.4 are, so to say, little and mild steps that should be undertaken for the restoration of the Reserve' natural state and for ensuring the endangered species a sustainable development. Non-execution of the above programmes in the most drastic case shall pose a threat to the pearl of the Reserve, the Dalmatian Pelican breeding colony (see Project 4.3.1)

4.1. Work Programme: Conservation and restoration of the habitats in the Reserve

4.1.1. +++ Project: Expanding and dredging (in order to increase the depth) of the existing artificial water body built in the northern part of the Reserve. Forming shallow ponds in the Reserve northern part by retaining the high waters after the Danube has entered the Reserve. The project should be executed along with projects 1.2.1 and 2.2.2. Objective: To create good feeding grounds for various aquatic birds like Waders, Herons and Egrets, Geese, Terns, Gulls, etc.

4.1.2. +++ Project*: Expanding the Reserve to the north by including within its boundaries the island Vetren and forming with Republic of Romania of a joint protected area on both sides of the state border (i.e. on both riversides of the Danube). Objective: To form a protected area of sufficiently large size in order to include as much as possible of the feeding grounds of the fish-eating species of birds. The project is in a process of preparation with the help of MoEW, RIEW – Russe and CLGE.

4.1.3. ++ Project: Creating an ecological corridor along the Danube right-hand riverside from the marsh at the village of Malak Preslavetz in Bulgaria to the lake Oltina in Romania. Objective: To ensure favorable conditions for the exchange of genetic material of different plant and animal species, and for the feeding migrations of the fish-eating birds. During the First Phase of the Project's the ecological corridor will connect the Garvan Marsh (by the village of Garvan) and Srebarna Lake.

4.1.4. ++ Project: Restoring the Garvan Marsh. Objective: To enrich the food resources available for the fish-eating birds from the Reserve by restoring a component of the natural ecological wetland complex that existed on both riversides of the Danube in the past.

4.1.5. + Project: Maintaining and restoring the areas of shrubs and small woods composed of native species along the lake periphery. Objective: To restore natural diversity of native plant species. To improve the habitat for amphibians.

4.1.6. + Project: Cutting 1 or 2 canals through the reed-beds and into the shore and creating of pools in the groups of trees growing on the steep eastern shore of the lake. Where possible this project should be carried out together with projects 2.2.1 and 2.2.2. Objective: To create suitable habitats for the European Otter (Lutra lutra).

4.2. Work Programme: Re-introduction of native and endangered species. Control on the population numbers.

4.2.1. ++ Project: Gradually restoring the native vegetation in and around the Reserve, using, on the one hand, local species of Willow (Salix sp.), White poplar (Populus alba) and other typical shrub and tree species and, on the other hand, eliminating the introduced exotic plants. Objective: To restore the native diversity of biological species and habitats.

4.2.2. ++ Project: Controlling, when necessary, the numbers of the Jackal, Fox, Raccoon-like Dog and Wild Boar in the Reserve by carrying out mid-winter counts and killings. Objective: To protect ground-nesting birds.

4.2.3. ++ Project: Stocking the lake with fish species from the Danube as well as re-introducing native species that have disappeared from the lake like the Asp (Aspius aspius), the Blue Bream (Abramis balerus), the White-eye Bream (Abramis sapa) and the Striped Ruff (Gymnocephalus schraetzer). Objective: To enhance species diversity of the fish community and to stabilize the trophic ressources of the fish-eating birds.

4.2.4. + Project: Creating the necessary pre-conditions for population booms of the Water Fleas (Daphnia sp.) and of Tubifex sp. by implementing relevant bio-techniques. Objective: To recover stable trophic resources for plankton-eating fishes.

4.3. Work Programme: Conservation and restoration of the habitats of rare and threatened species within the Reserve and its buffer zone.

4.3.1. +++ Project*: Practical activities for Dalmatian Pelican Conservation (please, see Part 3.3.). Objective: To help the birds in their building the nests; to prevent flooding and fires in the colony; to preclude access of land predators to the nests. The project is under implementation.

4.3.2. +++ Project*: Carrying out conservation activities with regard to globally threatened and rare species of aquatic and other birds. Objective: To conserve, reintroduce and increase the population of 5 globally threatened species (three of them breeding), as well as of 7 bird species included in the Red Book of Bulgaria.

4.3.3. ++ Project: Introducing nature-friendly and conservation-oriented approaches in agricultural practices and systems in order to create stable feeding and/or breeding conditions for the Lesser White-fronted Goose (Anser erythropus), Red-breasted Goose (Branta ruficollis), Corncrake (Crex crex), Great Bustard (Otis tarda). Objective: To create favorable conditions on a sustainable basis for the populations of these globally and regionally threatened species of birds.

4.3.4. + Project: Providing in the Forest Areas Management Plans for some bare tracts on the hill slopes to be left as they are around the Reserve. Objective: To create suitable breeding grounds for the Ruddy Shelduck (Tadorna ferruginea).

4.3.5. + Project: Forming ground chambers along the lake rim for attracting reptiles to winter in them. Objective: To improve the reptiles living milieu, particularly their wintering and breeding conditions which is a pre-requisite for a successful conservation of the reptile populations in and around the Reserve.

4.4. Work Programme: Biomanipulations

4.4.1 ++ Project: Re-introducing in the lake of some endangered and rare piscivorous fish species like the European Wels (Silurus glanis), the Volga Pikeperch (Stizostedion volgensis) and the Czech Ruff (Gymnocephalus balonii). Objective: To establish sustainable populations of endangered, rare and typical for the lake native species of fish thus increasing the biodiversity of the lake biota and improving the feeding grounds for the fish-eating birds in the Reserve. Creating of sustainable grazing trophic chain for the purposes of water quality management.

4.4.2. ++ Project: Restoring the population of the Ruddy Shelduck (Tadorna ferruginea) by releasing in the wild of young birds reared in captivity. Objective: To restore the numbers of this endangered species that used to occur in and around Srebarna Reserve in the past to its former levels.

5. Operational objective: involving local population in working out, discussing in detail and implementing the reserve management plan. Stimulating economic interest.

Scenarios for a probable development: Programmes 5.1 to 5.3 being an elaborately coordinated set of projects, aimed, on the one hand, at increasing the local people interest in the Reserve sustainable development and, on the other hand, at creating material pre-conditions for linking the social welfare with the wise use of the Reserve. Without support from the local population the Management Plan will have very slim chances for success.

5.1. Work Programme: Recruitment of enterprising young people for new professional occupations and businesses related to the Reserve. Building-up of the infrastructure to facilitate and support tourism and entertainment.

5.1.1. +++ Project*: Carrying out activities for the development of the green and rural tourism in the villages and towns in the Reserve vicinity. Objective: To instill in local people an interest in supporting the Reserve and in the implementation of its Management Plan.

5.1.2. ++ Project: Constructing of a panoramic roundabout path along the western edge of the Reserve, paved with sand and gravel. Objective: To create walking convenience for tourists who will prefer to hike or ride horses and horse carts while taking a close look at the Reserve.

5.1.3. ++ Project: Building the infrastructure as a first step toward development of the green and rural tourism. Setting up economic pre-conditions for building family-owned and family-run hotels through raising financial aid and securing loans under favorable conditions from interested organizations Objective: To assist local people in creating appropriate accommodation facilities (rooms to let, private hotels and restaurants), environmentally friendly transportation (horse carts and cabs, donkeys), etc.

5.1.4. ++ Project: Training people who will be willing or will have to work as hotel managers, village hosts, wildlife guides in and around the Reserve, boatmen, etc. Objective: To have trained people available for the new professions and businesses that will open for the region.

5.1.5. ++ Project: Dredging and clearing of the artificial water body located near the entrance to the village of Srebarna from the road Rouse - Silistra (App. 1, Map 12). Objective: To create a pond for sporting fishing (angling) and recreation.

5.2. Work Programme: Reversion to traditional crafts and occupations of old.

5.2.1. +++ Project: Setting aside zones for angling (App. 1, Map 11). Objective: To return to a traditional pursuit for the local population. Creating the pre-conditions for efficient control on poaching by removing a ban that is being constantly breached.

5.2.2. ++ Project: Reversing to the traditional usage of reed: for manufacturing souvenirs, floor and wall mats, etc. Objective: To revert at least part of the local population to the traditional ways of life and attitudes towards the lake; to arouse their economic interest in the lake and in maintaining and wise use of its ecosystems. Removing bans that make no sense thus predisposing people to acquire positive attitudes.

5.3. Work Programme: Involvement of local population in discussions on the Management Plan, its development and implementation.

5.3.1. +++ Project: Holding preliminary discussions on the Management Plan (The parts of this project so far having been fulfilled: i) a discussion on the green and rural tourism in Srebarna ii) a workshop on the place of Srebarna in the system of European Nature Reserves, iii) preliminary public discussion of the Management Plan in the village of Srebarna). Objective: To stimulate the information exchange between local population and experts.

5.3.2. + Project: Motivating local fishermen to protect and guard the Reserve against poachers. Objective: To involve the sector of the local community that is most interested in preserving the Reserve and its commercial fish stock in particular.

6. Operational objective: Conservation education and awareness, training; making the local population and public party to the protected areas problems and those of Srebarna in particular.

Scenarios for a probable development: programmes 6.1 to 6.3 are partially related to programmes 5.1 to 5.3, which concern the local population. Theirs are, however, long-term objectives, called upon to instill the true attitude towards nature in the global public at large and in the future generations.

6.1. Work programme: Building-up of the infrastructure within the Reserve for the support of education and training projects.

6.1.1.+++ Project: Improving the area around the jetty (called 'Pristana') by building there parking lots, a fountain, WC facilities; the same in the area of the fountain called 'Todoranka' Marking (by blazing or otherwise) hiker's trails including an eco-path around the Reserve; building hides and sites for watching birds and other wildlife for facilitating bird- and animal watchers. Objective: To set the necessary pre-conditions for the development of the green and cognitive tourism and for educating younger generations.

6.1.2. ++ Project: Setting up of an educational site for young people and secondary and high school students. Objective: To build-up a permanent interest and awareness as well as correct attitude towards environmental and wildlife in the children of the youngest age class.

6.2. Work Programme: Development of education and training programmes.

6.2.1. ++ Project: Developing education & training courses, voluntary work-camps for university and high-school students. Objective: To build up knowledge on the environment and the role of the Reserves for wildlife conservation; to improve the wildlife conservation and environmental education and training.

6.2.2. ++ Project: Organizing and holding training courses for guides involved in cognitive tourism, organizing bird-watching tours. Building-up of the environmental and conservation awareness and educating local population. Objective: To create pre-conditions for the development of green tourism and training people to deal with specific problems of this business.

6.2.3. + Project: Organizing work camps for children, high school and university students on a local, national and international scale for cleaning the Reserve, for developing its infrastructure and for executing specific projects. Objective: To make the public at large, and younger generations in particular, party to nature conservation problems and their solving.

6.2.4. + Project: Regularly organizing and delivering lectures before the local hunters and fishermen on the Reserve conservation status. Objective: To make this two groups of interest better acquainted with the legally protected species as well as with the restrictions regarding the hunting in the Reserve vicinities.

6.3. Work Programme: Dissemination of knowledge and information on the Reserve through production and distribution of printed materials, souvenirs, advertisements, etc.

6.3.1. +++ Project: Producing a broad spectrum of information materials to be distributed via Internet. Creating a Web site for the Reserve and its biota. Objective: To disseminate knowledge and information and to promote a positive attitude towards wildlife and habitat conservation. The project is fulfilled in the part concerning the Web-Site.

6.3.2. ++ Project: Producing and distributing promotional and information printed materials: booklets, folders, stickers, posters, etc. Objective: To disseminate knowledge and information and to promote a positive attitude towards wildlife and habitat conservation.

6.3.3. + Project: Producing souvenirs of the Reserve. Objective: To have local people interested in earning money from some economic activity related to the Reserve. Promotion of the Reserve.

6.3.4. + Project: Producing a popular science film about the Reserve Srebarna. Objective: Promoting the Reserve and attracting tourists.

6.3.5. + Project: Producing movies and multimedia products on the Reserve. Objective: To disseminate knowledge and information and to promote a positive attitude towards wildlife and habitat conservation.

6.4. Work Programme: Conversion of the Natural History Museum into a modern Visitor's (and Information) Center. Preliminary research and development of a scenario.

6.4.1. ++ Project: Elaborating a design along with all the necessary technical documentation for converting the Museum into a Visitors Center then starting the work on conversion proper. Making information panels, manufacturing and fixing aquaria, etc. Objective: To arouse the interest of the broad public in an up-to-date museum exhibition; to disseminate knowledge; to get together local conservation NGO’s and have them involved in supporting the Visitors Center's activities.

6.4.2. + Project: Designing, assembling and fixing a specialized video equipment for observing and demonstrating to the public/researchers the private life of the protected birds at their breeding colonies. Objective: To disseminate knowledge and information and to promote a positive attitude towards wildlife and habitat conservation. To draw attention to and arouse interest in the Museum and the Reserve. To collect scientific information.

7. Operational objective: accumulation of specialized scientific information on wetlands and on the reserve in particular.

Scenarios for a probable development: Without scientific research and monitoring in order to control the state of the ecosystems, the Management of the Reserve can be performed only intuitively without prognoses and justified scenarios.

7.1. Work Programme: Research studies on the Reserve's ecosystem functioning and on the biology, ethology and ecology of the protected and rare species.

7.1.1. ++ Project: Studying in detail the processes of eutrophication in the lake. Objective: To provide scientific backgrounds for decision-making with regard to the management of the Reserve.

7.1.2. ++ Project: Studying the ecology and ethology of globally threatened and rare species. Objective: To acquire more knowledge on their private life and to help improve their conservation and protection in the Reserve. The project is in progress in its part concerning the Dalmatian pelican.

7.1.3. ++ Project: Studying the processes of siltation of the lake as a result of soil erosion in the catchment area as well as the overall process of sediments forming. Objective: To gain more knowledge for the better management of these processes.

7.1.4. ++ Project: Studying the processes of biological productivity and the trophic relations in fishes inhabiting the Reserve. Objective: To gain more knowledge on the Reserve biota for its better management with regard to the commercial fishing.

7.1.5. + Project: Studying the underground waters and hydrology of the whole region and their role in feeding the Srebarna Lake. Objective: To gain more knowledge on the Reserve for its better management.

7.1.6. + Project: Carrying out thorough studies for revealing the overall structure of the invertebrate fauna of the Reserve. Objective: To gain more knowledge on the Reserve biota for its better management, particularly of its fish stock.

7.2. Work Programme: Monitoring

7.2.1. +++ Project: Creating a system for a long-term "surveillance" monitoring activities on the Reserve ecosystems. Monitoring procedures. Objective: To collect data on the state of the ecosystems in order to be able to make an early warning in case of undesired changes in the Reserve "health". The project is being executed.

7.2.2. ++ Project: Finishing the design and completing the system for automated monitoring on some physical factors of the Reserve environment. Objective: To exert operating control on activities for assisting the management of the Reserve.

7.2.3. ++ Project: Applying methods of remote sensing of the Reserve habitats. Creating a Geographic Information System (GIS). Objective: To exert operating control for the purposes the management of the Reserve and for furthering research activities. The project is fulfilled in the part of aerophotographs producing.

7.2.4. + Project: Hydrological monitoring. See projects 1.1.1. and 1.1.3. Objective: To exert operating control on activities for assisting the management of the Reserve water conditions.

8. Operational objective: Improvement of the reserve administrative activities.

Scenarios for a probable development: The purpose of the Work Programmes 8.1 and 8.2 is to make the organisation of the Reserve Administrative Management easier and to harmonize the relations between the Reserve Management and the local population. Several priority measures of great importance with respect to the Reserve protection have been suggested. The alternative of these programmes is the perpetuation of the serious infringements of the Reserve status by illegal fishing, etc.

8.1. Work Programme: Improvement of the regulations for control and protection of the Reserve and their implementation.

8.1.1. ++ Project: Improving the code of regulations for people crossing the Reserve periphery, e.g. from the village of Vetren to the northern sluice, for the anglers going to the riverside, etc. Objective: To lift restrictions for local people that used to provoke negative attitudes toward conservation. To involve local population in the implementation of the management plan.

8.1.2. + Project: Transferring arable land (through compensation, exchange or purchase) in the countryside "Baltata", which now is a legal property of the village of Vetren to become a legal property of the village of Aidemir. Objective: To avoid unnecessary crossing of the Reserve area by people and agricultural equipment, which causes the cost of farming and farm products to increase. The intention is to facilitate in this way local people in their everyday activities. This project is feasible only in case both interested parties sign an agreement for such a transfer.

8.2. Work Programme: Improvement of the regulations and their implementation for supervising and protecting the Reserve.

8.2.1. +++ Project: Urgently setting up of an effective system for supervision and control of the north sluice. Objective: Securing water storage of the lake against criminal or careless opening/destruction of the sluice.

8.2.2. +++ Project: Urgently setting up of an effective system for stopping of the great scale illegal fishing. Exerting greater control on observation of the restrictions during the spawning season. Objective: To bring the fish stock of the Reserve to a stable state. To improve the fish eating birds trophic resources.

8.2.3. ++ Project: Drawing in a more precise way the boundaries of the Reserve and its buffer zone in accordance with the legal formulations; marking the final boundaries with appropriate durable signs. Objective: To improve administrative management of the Reserve.

8.2.4. ++ Project: Setting up an automated security guard system. Objective: To improve the overall protection of the Reserve.

8.2.5. + Project: Restoring the buffer zone around the Reserve including, too, the marsh 'Garlitza' in it along with as much as possible of the rivulets Srebarnenska and Kalnezha catchment areas. Objective: To improve the environmental conditions in the Reserve.

8.2.6. + Project: Making use of the remote video equipment for the control and protection of the Reserve. See also project 6.4.2. Objective: To improve the Dalmatian Pelican colony protection.

3.3. Projects

PROJECT: practical activities for the Dalmatian Pelican (Pelecanus crispus) conservation

This Project has been executed since 1998.

Annotation: The breeding Dalmatian pelican colony is the most valuable natural component in Srebarna BR. Because of its great conservation value, a work programme was especially developed for the species with its activities being repetitively executed every given year. The programme contains a description of monitoring procedures and maintenance actions in the colony planned to be carried out jointly by the Central Laboratory of General Ecology (CLOGE) of the Bulgarian Academy of Sciences and the Foundation "Le Balkan - Bulgaria".

Aim: To preserve the breeding colony, to improve the breeding conditions and to remove the negative factors.

Needed funds: 10,000 BGN

Activities: Regular annual monitoring of the colony (to be financially supported by the Biological Station at Tour du Valat, France).

January

February

March

April

May

June-July

1. Maintenance activities in the Dalmatian Pelicans colony (with the financial support of Swarovski Optik Ltd.).

Performing traditional maintenance activities in the colony (August through September every year):

PROJECT: Conservation activities concerning globally threatened and rare species of aquatic and other birds

Annotation: Five globally threatened bird species are recorded for Srebarna BR, three of which also breed there. There are also 7 bird species, included in the Red Book of Bulgaria. Detailed conservation measures are listed for each species included in the project.

Aim: conservation, reintroduction and increase of the populations of species included in the project.

Needed funds: 15000 BGN

Activities:

Pygmy Cormorant (Phalacrocorax pygmeus)

Lesser White-fronted Goose (Anser erythropus)

Red-breasted Goose (Branta ruficollis)

Ferruginous Duck (Aythya nyroca)

Corncrake (Crex crex)

Great Bustard (Otis tarda)

Great White Egret (Egretta alba)

Purple Heron (Ardea purpurea)

Spoonbill (Platalea leucorodia)

Glossy Ibis (Plegadis falcinellus)

Graylag Goose (Anser anser)

Ruddy Shelduck (Tadorna ferruginea)

White-tailed Sea Eagle (Haliaeetus albicilla)

PROJECT: RECONSTRUCTION OF THE NORTHERN SLUICE ON THE CANAL CONNECTING THE LAKE WITH THE DANUBE

Annotation

The now existing northern sluice has been so constructed as to withstand the rush of the high Danube waters into the canal. When the water level of the lake is higher than that of the Danube, water oozes, however slow, back into the river through the sluice. This causes the slow drying up of the whole flooded area to the north and north-east from the south sluice and surrounded by dikes (App.1, Map 10). This is the reason to have the Reserve annually deprived of 120 ha shallow water bodies, rich in trophic resources, where a large number of waterfowl and other aquatic birds feed, breed and roost.. If the northern sluice construction is slightly changed and repaired it will be able to hold the lake high waters up to level 13.20 m in the northern part of the Reserve until the end of the productive period.

Aim: To preserve shallow temporary pools and other water bodies in the northern part of the Reserve until the breeding season is over. To create new habitats for rare and endangered waterfowl and other aquatic species of birds. To increase abundance and diversity of bird species.

Price of the project (preliminary estimate)  2500 BGN

Activities

    1. Technical and economical assessment
    2. Reconstruction of the sluice

PROJECT: Removal of a part of THE BOTTOM SLUDGE FROM THE LAKE BOWL

Annotation:

The main harm eutrophication causes to a stagnant water body is the acceleration of the ecological succession and the siltation of the lake bowl reducing in this way its maximum and average depth. It also causes a depletion of its biodiversity and disturbs its trophic network (see Sections 1.14.6, 1.16.2.1 to 1.16.2.5). Irrespective of the favourable trends during the last two years (see Sections 1.14.6 and 1.16.2.5) the danger still exists for the eutrophication rate to go up again. The problem is that following the water level rise in the period of 1998 through 2000 a large part of the reed and its root system has died under the thick layer of water.

Obviously a substantial part of the nutrients, nitrogen and phosphorus, remains chemically blocked in the anaerobic mass of roots and sediments, but in a long-term it is quite possible that it will be released and the nutrients will enter again the ecosystem cycles. On the other hand quite a big amount of nutrients remains in the semi-liquid sediment over the clayey underlay (the Sarpov's formation - see Sections 1.14.1 and 1.14.5) of the lake bottom. A tentative assessment of the nitrogen and phosphorus pools based on the analyses in part 1.14.5 follows:

Element

Sediment from 150 ha lake surface [t]

One year production of the reed from 402 ha  (Baeva, 1994) [t] (see also 1.16.2.5)

Nitrogen

1834

135

Phosphorus

182

7.61

This significant reservoir of nutrients will always support high levels of eutrophication. This in turn poses the danger of periodical booms of phytoplankton causing anaerobic conditions in the water column with all the harmful consequences due to disruptions of the trophic network and the mass die-outs of living creatures.

We could expect the situation with nutrients to become substantially improved after a large part of the bottom sludge is removed by suction dredging. This will bring about considerable decrease of the nutrients tank in the lake apart from the increase of the lake average depth with all the good prospects for getting down the levels of eutrophication and stopping or even reversing the succession.

Aim: To reduce biologically available pools of nitrogen and phosphorus compounds in the lake and correspondingly, the phytoplankton productivity as well as partially the reed-bed one. A temporary slow-down of the succession by the suction dredging of the lake bottom.

Alternatives and terms of execution:

According to the international practice (Bjork, 1994) in suction dredging of bottom sludge efforts should be made to avoid the following phenomena:

The first of the above requires the use of a suction dredge and a close control of the process. The latter can be fulfilled by depositing the sludge at suitable depot and re-pumping river water back into the lake through the existing canal, or discharging all the dredged mass into the Danube. In the first alternative the deposited sludge may be used for forming rice paddies or for enriching the soil in case the analyses show the sediments are free from persistent pollutants (Section 1.14.6). There is only one suitable place for a depot and/or rice paddies around the Reserve and it is the area to the east of the canal connecting the lake with the Danube, in the Aidemir plain where in the past was the Aidemir Marsh. The areas to be dredged are shown on Map 12, App.1.

Amount of work:
Average area to be suction dredged: 150 ha
Average thickness of the sludge layer to be dredged away: 1 m
Average water content of the sludge: 85% (75% to 95%)
Average volume of sludge to be pumped out: 1,500,000 m3
Dry matter: about 225,000 m3

Price of the project (preliminary estimate)
Cost of the suction dredging for 1 m3 dry matter and disposal at a distance of 3 km: 7.6 BGN
Total for the 225,000 m3: 1.71 mln BGN
Cost of the return of 1,300,000 m3 of water back to the lake: about 1 mln BGN
General expenses (transportation of equipment, energy supply, etc.): 1mln BGN
Preparing the required technical and economic documentation for the project plus the preliminary research and investigations: 20,000 BGN
Total for the project: 3,730,000 BGN

Activities:

1. Preliminary investigations

Preliminary investigation into the geologic profile under the lake
Preliminary design:
Alternative A: disposing of the sludge into the Danube
Alternative B: Depositing the sludge for consequent use for soil enrichment
Economic rationale

2. Preliminary activities

Transportation and mounting the equipment
Drawing a power line for energy supply to the site

3. Executing the project

PROJECT: REMOVING PART OF THE REED

Annotation

It is a well-known fact that the ecological succession in a lake ecosystem takes place basically because the lake open water area overgrows with reed. In the past the growing edge of the reed-bed used to break away from the main body of the bed forming floating islets, the so-called "kochki". During the periodical rush of the Danube water in and out of the lake part of those islets had been washed away into the river. Nowadays, because of the heavily disturbed water conditions in the Reserve, the surface area of the reed-bed constantly grows. In the period after 1948 about 15 % of the open lake surface are covered with reed, mainly as "kochki" (App. 1, Map 8). The main part of the "new" reed is concentrated in the southern part of the lake and close to the entrances of the East and West lake pools ("Kamaka" and the jetty "Pristana").

In executing the Project "Suction dredging of the bottom sludge" special equipment for removing part of the reed shall be installed in the lake. This will be done when the time comes to get the suction dredge through the reed-bed to the Pelican's Pool to perform dredging operations for deepening the Pool. The eradication of the reed should be done under the following conditions:

Aim: Regular removal, at given intervals of time, of the biomass in order to terminate the process of its accumulation in the lake. This will make the eutrophication processes slow down and will reduce the rate of the succession, which is linked to the overgrowing the open water areas with reed.

Price of the project (preliminary estimate)
Amount of work:
Average perimeter of the lake: 4200 m
Average volume of the removed biomass at average thickness of the removed layer 1 m: 4200 m3
Expected cost 4200 ? 12 BGN = 50,000 BGN
Additional expenditures (transportation of equipment, etc.): 50,000 BGN
Total: 100,000 BGN


APPENDICES [not shown in this reprint edition]

Appendix 1. Maps

    1. Wetlands around Srebarna Lake
    2. Topography
    3. Geology and Geological Profile of the Srebarna Lake Catchment Area
    4. Catchment Area of Srebarna Lake
    5. Soils and forests around Srebarna Lake
    6. Hypsometry of Srebarna Lake
    7. Vegetation Map of Srebarna BR.
    8. Long-term Changes in the Lake Mirror (1948-2000)
    9. Land Tenure around Srebarna BR
    10. Boundaries of Srebarna BR in the Past, at Present and Proposed
    11. Habitat Management
    12. Places for Dredging in Srebarna BR
    13. Nature Resources Usage of Srebarna BR
    14. Access to Srebarna BR
    15. Sampling Points

Appendix 2. Geology section
Appendix 3. Soil and sediments chemistry
Appendix 4. Water quality
Appendix 5. Climate
Appendix 6. Phytoplankton
Appendix 7. Zooplankton
Appendix 8. Macrozoobenthos
Appendix 9. Production and destruction of organic mater
Appendix 10. Forest
Appendix 11. Invertebrates
Appendix 12. Fishes
Appendix 13. Reptiles
Appendix 14. Birds
Appendix 15. Mammals
Appendix 16. Social-economic values

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For further information about the Ramsar Convention on Wetlands, please contact the Ramsar Convention Bureau, Rue Mauverney 28, CH-1196 Gland, Switzerland (tel +41 22 999 0170, fax +41 22 999 0169, e-mail ramsar@ramsar.org). Posted on this Web site, 11 May 2001, Dwight Peck, Ramsar.

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