Recent habitat degradation in karstic Lake Uluabat, western Turkey: A coupled limnological–palaeolimnological approach
The Ramsar site of Lake Uluabat, western Turkey, suffers from eutrophication, urban and industrial pollution and water abstraction, and its water levels are managed artificially. Here we combine monitoring and palaeolimnological techniques to investigate spatial and temporal limnological variability...
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| Veröffentlicht in: | Biological conservation 2008-11, Vol.141 (11), p.2765-2783 |
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| creator | Reed, Jane M. Leng, Melanie J. Ryan, Sandra Black, Stuart Altinsaçli, Selçuk Griffiths, Huw I. |
| description | The Ramsar site of Lake Uluabat, western Turkey, suffers from eutrophication, urban and industrial pollution and water abstraction, and its water levels are managed artificially. Here we combine monitoring and palaeolimnological techniques to investigate spatial and temporal limnological variability and ecosystem impact, using an ostracod and mollusc survey to strengthen interpretation of the fossil record. A combination of low invertebrate Biological Monitoring Working Party scores (200
yr) changes in organic and carbonate content, diatoms, stable isotopes, ostracods and molluscs in a lake sediment core (UL20A) indicates a 20th century trend towards increased sediment accumulation rates and eutrophication which was probably initiated by deforestation and agriculture. The most marked ecological shift occurs in the early 1960s, however. A subtle rise in diatom-inferred total phosphorus and an inferred reduction in submerged aquatic macrophyte cover accompanies a major increase in sediment accumulation rate. An associated marked shift in ostracod stable isotope data indicative of reduced seasonality and a change in hydrological input suggests major impact from artificial water management practices, all of which appears to have culminated in the sustained loss of submerged macrophytes since 2000. The study indicates it is vital to take both land-use and water management practices into account in devising restoration strategies. In a wider context, the results have important implications for the conservation of shallow karstic lakes, the functioning of which is still poorly understood. |
| doi_str_mv | 10.1016/j.biocon.2008.08.012 |
| format | Article |
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yr) changes in organic and carbonate content, diatoms, stable isotopes, ostracods and molluscs in a lake sediment core (UL20A) indicates a 20th century trend towards increased sediment accumulation rates and eutrophication which was probably initiated by deforestation and agriculture. The most marked ecological shift occurs in the early 1960s, however. A subtle rise in diatom-inferred total phosphorus and an inferred reduction in submerged aquatic macrophyte cover accompanies a major increase in sediment accumulation rate. An associated marked shift in ostracod stable isotope data indicative of reduced seasonality and a change in hydrological input suggests major impact from artificial water management practices, all of which appears to have culminated in the sustained loss of submerged macrophytes since 2000. The study indicates it is vital to take both land-use and water management practices into account in devising restoration strategies. In a wider context, the results have important implications for the conservation of shallow karstic lakes, the functioning of which is still poorly understood.</description><subject>Animal and plant ecology</subject><subject>Animal, plant and microbial ecology</subject><subject>Applied ecology</subject><subject>Bacillariophyceae</subject><subject>Bacillariophyta</subject><subject>Biological and medical sciences</subject><subject>Biomonitoring</subject><subject>carbonates</subject><subject>Conservation, protection and management of environment and wildlife</subject><subject>Diatoms</subject><subject>ecosystems</subject><subject>environmental monitoring</subject><subject>Eutrophication</subject><subject>fossils</subject><subject>Fresh water ecosystems</subject><subject>Freshwater</subject><subject>Fundamental and applied biological sciences. 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Endangered species: population survey and restocking</subject><subject>phosphorus</subject><subject>sediments</subject><subject>stable isotopes</subject><subject>submerged aquatic plants</subject><subject>surveys</subject><subject>Synecology</subject><subject>temporal variation</subject><subject>water management</subject><subject>water pollution</subject><issn>0006-3207</issn><issn>1873-2917</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><recordid>eNqFkc-KFDEQxhtRcFx9A8Fc9GSPSbo7SXsQlmX9AwOC7pxDJamezUxPp0261b3tO_iGPokZexFPCgVVCb_6qviqKJ4yumaUiVf7tfHBhmHNKVXrUzB-r1gxJauSt0zeL1aUUlFWnMqHxaOU9vkpK9Gsiu-f0OIwkWswfoKJONxFcDD5MBA_kAPENHlLNnBAsu1nMDC9JN8wTRgHcjXHA968JufEhnns0ZHeH4fQh5230P-8_TFCDxj-_iQwjjGAvX5cPOigT_jkLp8V27eXVxfvy83Hdx8uzjelrYWaSiZbUzuHFTWKVw1ztVGVkkwh44K5ztRGoJGgVK6gtcClaY3ERvAGnHDVWfFi0c1jv8x5cX30yWLfw4BhTjpbVtdMiP-CrFaKt6LNYL2ANoaUInZ6jP4I8UYzqk_30Hu93OMkrvQpGM9tz-_0IWUjugiD9elPL6eKtaKRmXu2cB0EDbuYme1nTllFWSMl_028WQjMvn31GHWyHgeLzke0k3bB_3uVX61ZrwQ</recordid><startdate>20081101</startdate><enddate>20081101</enddate><creator>Reed, Jane M.</creator><creator>Leng, Melanie J.</creator><creator>Ryan, Sandra</creator><creator>Black, Stuart</creator><creator>Altinsaçli, Selçuk</creator><creator>Griffiths, Huw I.</creator><general>Elsevier Ltd</general><general>Kidlington, Oxford: Elsevier Science Ltd</general><general>Elsevier</general><scope>FBQ</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>C1K</scope><scope>SOI</scope><scope>7SN</scope><scope>7TV</scope><scope>7U6</scope><scope>7UA</scope><scope>F1W</scope><scope>H95</scope><scope>H96</scope><scope>H97</scope><scope>L.G</scope></search><sort><creationdate>20081101</creationdate><title>Recent habitat degradation in karstic Lake Uluabat, western Turkey: A coupled limnological–palaeolimnological approach</title><author>Reed, Jane M. ; Leng, Melanie J. ; Ryan, Sandra ; Black, Stuart ; Altinsaçli, Selçuk ; Griffiths, Huw I.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c468t-179b4dde30b82351d4b838718e1261dfb4b6eb7a88b4ba9ca27b9b7e5625ad6d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Animal and plant ecology</topic><topic>Animal, plant and microbial ecology</topic><topic>Applied ecology</topic><topic>Bacillariophyceae</topic><topic>Bacillariophyta</topic><topic>Biological and medical sciences</topic><topic>Biomonitoring</topic><topic>carbonates</topic><topic>Conservation, protection and management of environment and wildlife</topic><topic>Diatoms</topic><topic>ecosystems</topic><topic>environmental monitoring</topic><topic>Eutrophication</topic><topic>fossils</topic><topic>Fresh water ecosystems</topic><topic>Freshwater</topic><topic>Fundamental and applied biological sciences. 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yr) changes in organic and carbonate content, diatoms, stable isotopes, ostracods and molluscs in a lake sediment core (UL20A) indicates a 20th century trend towards increased sediment accumulation rates and eutrophication which was probably initiated by deforestation and agriculture. The most marked ecological shift occurs in the early 1960s, however. A subtle rise in diatom-inferred total phosphorus and an inferred reduction in submerged aquatic macrophyte cover accompanies a major increase in sediment accumulation rate. An associated marked shift in ostracod stable isotope data indicative of reduced seasonality and a change in hydrological input suggests major impact from artificial water management practices, all of which appears to have culminated in the sustained loss of submerged macrophytes since 2000. The study indicates it is vital to take both land-use and water management practices into account in devising restoration strategies. In a wider context, the results have important implications for the conservation of shallow karstic lakes, the functioning of which is still poorly understood.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.biocon.2008.08.012</doi><tpages>19</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Biological conservation, 2008-11, Vol.141 (11), p.2765-2783 |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Animal and plant ecology Animal, plant and microbial ecology Applied ecology Bacillariophyceae Bacillariophyta Biological and medical sciences Biomonitoring carbonates Conservation, protection and management of environment and wildlife Diatoms ecosystems environmental monitoring Eutrophication fossils Fresh water ecosystems Freshwater Fundamental and applied biological sciences. Psychology Isotopes karsts lakes land use limnology macrophytes Mollusca Ostracoda Ostracods Palaeolimnology paleoecology Parks, reserves, wildlife conservation. Endangered species: population survey and restocking phosphorus sediments stable isotopes submerged aquatic plants surveys Synecology temporal variation water management water pollution |
| title | Recent habitat degradation in karstic Lake Uluabat, western Turkey: A coupled limnological–palaeolimnological approach |
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