Lacul Tăbăcăriei Team 1 Living Lab 2021
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| Area | Tăbăcărie Lake | |
| Place | Constanța | |
| Country | Romania | |
| Topics | WAVE Project | |
| Author(s) | Harcotă Andrei-Bogdan, Bulmagă Iuliana-Vasilica , Nica Mădălina,Gavrilescu Carla, Visterneanu Florentina | |
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Rationale
- Why do you think this case is relevant? What is your hypothesis considering the landscape challenges?
- Format: 3-4 sentences
Location and scope
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Water as a natural system
Geomorphology, typologies and dynamics of water areas
- Describe the water areas of your area in the contxt of the wider water system
The Tăbăcărie Lake is a natural lake located in the northern part of Constanța and belongs to the Coastal Hydrographic Basin of Black Sea, the lake has an approximately rectangular shape with low shoresand and the banks being covered with vegetation mostly by reed.
Existing water bodies in the area:
1. Tăbăcărie Lake, which has an area of 99 hectares and an average depth of the lake being 1.5m, The lake being located in an elongated depression area helped to creation of the lake by blocking a previously existing river
2. Siutghiol Lake, which has an area of 1900 hectares and the maximum depth of the lake being 17m, The lake is separated from the sea by a coastal cordon. Siutghiol communicates through one artificial channel to Tăbăcărie Lake that is connected with the Black Sea through another artificial channel.
- How does water appear in the landscape of your living lab? What types of water areas are common?
There are two types of water bodies: lakes and artificial channels. The lakes are naturally formed with fresh water, both lakes with an approximately rectangular shape communicating with each other through artificial channels: Siutghiol-Tăbăcărie Canal and Tăbăcărie-Black Sea Canal.
The evolution of Siutghiol and Tăbăcărie lakes is the result of a combination between natural and anthropogenic factors, the climatic factors having a decisive role in the genesis of both lakes.
From a genetic point of view, Lake Tăbăcărie is included in the category of fluvio-marine estuaries. From a sedimentological point of view, the area of Lake Tăbăcărie is related to the evolution of Lake Siutghiol, located to the north, but also to the processes of erosion of the banks of the basin in which it was formed. The shores of the lake are completely rectified and consolidated. The western shore rises to an altitude of 6-7 m and to the eastern and south these elevations are lower, being between 2-4 m. In its northern part, the coast is very low, 1-2 m.
- Please identify the water bodies' catchment areas, tributaries and floodplains
Lake Tăbăcărie belongs to the Coastal Hydrographic Basin, a basin that has an area of about 3958 km2. Along with Tăbăcărie, from the Hydrographic Basin, there are also the lakes Tașaul, Hagieni, Limanu, Techirghiol etc.
The lake is supplied with fresh water from the Siutghiol Liman. It is known that at the bottom of the estuary there are a series of fresh water springs.
- Which dynamics do these water areas have?
Lake Tăbăcărie was surrounded in the last century by the city of Constanța, it directly underwent human interventions, such as dredging, earthworks and heavy pollution. The sediments on the surface of the lake are generally fine-grained: clay and mud, with sands that appear only on the dredged bottoms. Analysis of the chemical composition of the sediment surface revealed the presence of large amounts of certain heavy metals, in particular: Zn, Ba, Cu and Pb, dispersed mainly near the points of discharge of rainwater pipes.
At the level of 1993 in Tăbăcărie Lake, both rainwater and urban wastewater (domestic and industrial), which led to the degradation of the aquatic environment. In the years 1978-1979 the basins of the lake were dredged, and the shore arranged with pedestrian alleys.
Following the dredging works, the highest depths (maximum 3.70 m) were highlighted in the northern part of the lake, where the topography of its bottom has relatively steep slopes due to dredging operations. Initially, the dredging was done evenly throughout the lake, but the supply of rainwater and wastewater, with a large load of solid suspensions, led to the partial clogging of the southern sector. Here are located the most numerous sources of discharge of solid material (sand, gravel), as well as decomposing organic material.
- Have there been any flood events in the past?
The possibility of floods is drastically reduced by the shores that were rectified, strengthened and arranged between 1978-1979 by these anthropogenic changes. The shore was changed by 125 cm above sea level, so that these flood possibilities are almost impossible at present with the shores of the lake "corrected" and with a shape closest to that of the circle.
Between the Siutghiol, Tăbăcărie and Black Sea, artificial canals were built so that the excess water was discharged into the sea by a dam located in the “Pescărie” area (Pescărie area is the north east canal that connects Tăbăcărie Lake to Black Sea).
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Water as a living space
- Which habitats can be found in and along the water areas of your area?
Tăbăcărie Lake together with Lake Siutghiol are part of a protected area named „Natura 2000”, The Tăbăcărie lake is a complex lacustrine due to the close interdependence that exists between Lake Siutghiol and Lake Tăbăcărie.
Lake Tăbăcărie hosts an important number of species of reptiles and amphibians, but also protected birds: · 32 species · 43 migratory species · 4 endangered species globally
The vegetation around the lake is specific to Dobrogea Lacustrine, but there are also other species, such as willow, poplar, linden, and some specimens of red oak, magnolia and pond cypress. The flora is represented by shrubs with roses, tulips and other plant species. Hygrophilous plants are also present in the area represented by moisture-loving plants, especially close to the canals and in the slightly swamped areas.
Anthropophilic species are also considered to be adapted to the urban areas, which correlates with the location of the area near urban areas, so that these species have adapted to the presence and human activity.
- How is the water quality in your water areas?
In recent years, the quality of water in the lake has declined, due to the huge amount of wastewater that is discharged without being properly treated beforehand.
The water has been enriched in nutrients, and this leads to eutrophication. The main causes of the eutrophication process are used for mineral fertilizers in neighboring neighborhoods, which eventually contaminate the water, but also the chemical industry that causes nitrogen emissions that react with rainwater and form acid rain, the detergent industry that produces phosphorus salts, but also other wastes that decompose and release nitrogen and phosphorus into the upper layers of water.
The main consequence of eutrophication is huge for the development of planktonic algae that change the properties of water, especially color and odor. Another negative consequence is the decrease in biodiversity and the number of species over time.
- Which areas are still natural, which are urbanised/artificial?
Lake Tăbăcărie is included in the landscape next to Tăbăcărie Park, which is an anthropized environment. It includes “Expoflora” - a permanent botanical exhibition with an area of 4 ha, the Luna Park amusement park, the Dolphinarium together with the Microreservation and the Gravity Park complex. The southwestern part of the park has been considerably reduced with the construction of City Park Mall and related parking lots.
City Park Mall was built in 2008 on a plot of land belonging to Tăbăcărie Park, subsequently a large part of the park was sacrificed to the detriment of construction. This generated protests at the local level, but construction continued; the mall and the parking lot cover an area of about 6 ha
- Are the rivers permeable for fish or blocked by artificial elements?(approx 200 signs)
Every year, in the warm season, The Lake Tăbăcărie suffers due to algal blooms. The process is determined by pollutants discharged into the environment further with the influence of solar radiation causing an increase in the amount of nutrients that come into contact with aquatic plants,causing a sudden increase. The larger the plants, the higher the amount of oxygen consumed. This will lead the fish and the rest of the aquatic creatures to an oxygen deficiency. This will lead to the imminent death of the aquatic species that populate Lake Tabacarie. Another factor that influences aquatic species is the construction of barriers blocking the migration of fish from Lake Siutghiol and then to the Black Sea.
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Blue and Green Infrastructure
- What are the major potential elements of a green/blue infrastructure network? Are these likely to change/disappear? Why is that?
The green and blue infrastructure of cities has great potential to effectively address global challenges such as climate change,unsustainable urbanization, the declining access to nature. The green and blue infrastructure can offer multiple social, environmental and economic benefits if put into operation correctly.
The green / blue infrastructure aims to:
Reduce discharges, increase biodiversity that can provide cultural / curative benefits through access to natural resources for the population.
Maintaining health by exposing the population to water.Encouraging a healthy lifestyle, by creating opportunities to practice sports and various exercises (swimming, rowing, walks on the waterfront, etc.).
Maintaining mental health, with the help of the aesthetic aspect of urban waters, which can induce a state of relaxation.
Changes in green infrastructure can happen if planning is inconsistent and does not follow the ideas of a green-blue infrastructure. If these concepts are not followed by the administration of Constanța Municipality, major changes may occur through the ruthless intervention of the City Hall. In conclusion, the disappearance or the change can only be anthropic and influenced mainly by the political class in the city leadership.
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Water as a cultural space
Land use and water
- describe in particular the historical evolution of land use pattern
More than 100 years ago, in the area of Lake Tăbăcărie were two leather factories, where many locals worked and where skins and furs were processed with a mixture of substances. The book (Constanţa and its surroundings,1960) mentions that: “The lake takes its name from the local industry “Tăbăcăria Mică”, found in these places in 1896. Two years later, "Tăbăcăria mică" ceased its activity. In 1880, on the place occupied today by the building of the maritime research station, it resumed its activity with the name "Tăbăcăria Mare".
13 years ago there was a major change in the use of land. In the premises of the park was built a commercial complex sacrificing a large area 54,000 m2, which is why it aroused protests and controversies before the start construction in 2008.
Following recent changes to the park, it has been found that the ecosystem has been severely affected by human activity which is the biggest cause of habitat loss and natural balance in the life of wild animals that live in the lake and park.
- description evolution, status quo and driving forces, is the land use likely to change? Why is that?
In the past, the use of the land was mainly for industry and for the use of water for leather factories and fish farms in the area. Currently the land use is for recreational purposes being one of the largest green spaces within the city with a fairly high pedestrian intensity compared to other green spaces within the city.
The natural factors that could influence land use would be only flooding or a severe drought. In the current situation, floods are almost impossible due to the shores that have been consolidated but also the canal that Lake Tabacarie is connected with Black Sea through which any excess water is eliminated.
The administrative and anthropic factors that influence the use of land in our study area can be influenced only by the mayor's office. The mayor's office is trying to maintain a balance regarding the satisfaction of investors and the general opinion of the locals, sometimes upsetting one of these two groups.
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Cultural and spatial typologies of water areas
- Which spatial patterns have evolved in relation to your water areas?
The spatial patterns that have evolved over time in relation to the water area, are represented by the infrastructure arranged in the park, the promenade alleys, cycling and children's playgrounds. Also, the works of rectification of the banks, correlated with the works of dredging and embankment that led to the change of patterns and evolution to the shape of both the lake and the areas in the immediate vicinity that are closely related to the evolution of the city.
- What is the role of water areas within the overall urban morphology?
Our contemporary landscapes are fragmented with spatially complex patches, in which species of plants, insects, birds, mammals, reptiles and fish have changed significantly from man's case. For example, many native species have declined in abundance as a result of habitat loss and fragmentation. Others, such as invasive species, have grown due to human manipulation. Moreover, functional aspects of ecosystems, such as pollination, seed dispersal, decomposition of dead organic matter, carbon sequestration and water filtration, have also been modified. In recent decades, innovative theoretical and empirical research in spatial ecology has clarified the important roles of landscape, spatial configuration for species interactions and ecosystem processes.
The urban morphological analysis helps in the evolution of the city and maintains a certain coherence on the urban form trying to stop the urban anarchy of unsustainable buildings. Water areas have an important role in the process of formation and transformation of urban spaces. In our case, Tăbăcărie Lake has an important role in creating a recreational space in the context of an urban area, but it also represents a buffer zone between Siutghiol Lake and the Black Sea, with canals that communicate with both bodies of water.
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Sacred spaces and heritage
- Which places/elements hold cultural value and to whom?
- You may add a map and some images, please also explain in your caption why these elements are valuable
- Your case sacredspace1.jpg
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Visual appearance and landscape narrative
- Which elements are essential for the landscape character?
- Has the landscape been painted or otherwise depicted, when and whom? Which elements are essential?
- Which narratives exist? Who has written about this landscape or depicted it in some way?
- You can add text and images
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Water and People
Accessibility and usability
- Where are your water areas accessible, and where not? How strong are spatial obstacles preventing access?
- Who is using the spaces and how?
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Community Mapping
What is to be mapped here?
- Social groups from within the community, for example the youth, kids, students, parents, the retired etc. Typically, these groups have specific needs, which you can also make explicit on the map. These people might not be organized in any way, but they are usually present in the context you are observing
- Local stakeholder groups: these groups are organized in one or the other way. They only exist within the community context you are observing. For example: the local community center, local churches, local interest groups, the landowners, small businesses and retailers
- External stakeholder groups are not necessarily present in the environment you are observing, but they may have strong stakes and interests. These can be local authorities, politicians, associations, care services etc.
- For each group, you may identify their needs, objectives, power and capacities
- You may also identify gaps and power conflicts
- Please try to redepict these elements in an integrated way and in relation to your water landscape. What is the relationship between these groups? Are they close or distanced from each other? Who is more powerful? Which voices are hardly heard? Do they have any shared concerns?
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Possible Futures
- You can summarize your findings with a SWOT diagram and a DPSI(R) Model
- Link back to the Sustainable Development Goals: Which goals are at risk?
- What is your worst case scenario for this landscape?
- What is your best case scenario for this landscape?
- Present your scenarios in the form of a collage or sketch
- Add text and visuals
- Your case your spider diagram or dpsir model.jpg
explain your analysis briefly in the caption
- Your case yourworstcase visual.jpg
explain your worst case scenario briefly in the caption
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Collaborative Goal Setting
- Define strategic planning objectives based on the evaluation findings from your analysis
- Ideally, involve the community of your living labs into this process
- Link back to your original targets from section one and the Development Goals
- 150 words text contribution
Spatial Strategy and Transect
- translate your strategic goals into a vision
- develop a spatial translation of your vision
- exemplify your vision in the form of a transect with concrete interventions
- add map(s) and visualizations
- Your case spatial translaton vision.jpg
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- Your case transect.jpg
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From Theory of Change to Implementation
- For implementing your vision: Which partnerships are needed? Which governance model is required?
- Who needs to act and how? Draw and explain a change/process model/timeline
- Which resources are needed? On which assets can you build?
- add 150 words text and visuals
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References
- give a full list of the references you have used for your case
Process Reflection
- Reflect in your intercultural and interdisciplinary team on the outcomes of your study
- Which limitations were you facing?
- What have you learnt from each other?
- What did you learn in the Living Labs?
- What would you do differently next time?
- You can also use diagrams/visuals
- 250 words text