Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s10750-010-0179-x |
Drought-induced changes in nutrient concentrations and retention in two shallow Mediterranean lakes subjected to different degrees of management | |
Ozen, Arda1; Karapinar, Burcu1; Kucuk, Ismail2; Jeppesen, Erik3; Beklioglu, Meryem1 | |
通讯作者 | Beklioglu, Meryem |
会议名称 | 6th Shallow Lakes Congress 2008 |
会议日期 | NOV 23-28, 2008 |
会议地点 | Punta del Este, URUGUAY |
英文摘要 | While extensive knowledge exists on the relationship between nutrient loading and nutrient concentrations in lakes in the cold temperate region, few studies have been conducted in warm lakes, not least in warm arid lakes. This is unfortunate as a larger proportion of the world's lakes will be situated in arid climates in the future due to climate change and a larger proportion will suffer from a higher frequency of intensive drought. We conducted a comprehensive 11-13 year mass balance study in two interconnected shallow Mediterranean lakes in Turkey, covering a period with substantial changes in climate conditions. The upstream lake was only affected by natural changes in nutrient loading, while the downstream lake was additionally influenced by sewage diversion and restoration by fish removal. Contrasting to experience from north temperate lakes we found an increase in in-lake concentrations of total phosphorus and inorganic nitrogen (ammonia as well as nitrate) in dry years despite lower external nutrient loading, and submerged macrophytes did not increase the nitrogen retention capacity of the lakes. In contrast, fish removal modulated the nitrogen concentration as in north temperate lakes, but the effect was not long-lasting. Our results suggest that climate warming reduces the nutrient retention capacity of shallow lakes in the Mediterranean and exacerbates eutrophication. Lower thresholds of nutrient loading for shifting turbid shallow lakes to a clear water state are therefore to be expected in arid zones in a future warmer climate, with important management implications. |
英文关键词 | Arid regions Nitrogen dynamics Biomanipulation Climate change Eutrophication Water level fluctuation |
来源出版物 | HYDROBIOLOGIA |
ISSN | 0018-8158 |
EISSN | 1573-5117 |
出版年 | 2010 |
卷号 | 646 |
期号 | 1 |
页码 | 61-72 |
出版者 | SPRINGER |
类型 | Article;Proceedings Paper |
语种 | 英语 |
国家 | Turkey;Denmark |
收录类别 | SCI-E ; CPCI-S |
WOS记录号 | WOS:000276660100006 |
WOS关键词 | NITROGEN-RETENTION ; EUTROPHIC LAKES ; WORKSHOP CONCLUSIONS ; DANISH LAKES ; RESTORATION ; PHOSPHORUS ; MACROPHYTES ; REMOVAL ; TURKEY ; BIOMANIPULATION |
WOS类目 | Marine & Freshwater Biology |
WOS研究方向 | Marine & Freshwater Biology |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/298497 |
作者单位 | 1.Middle E Tech Univ, Dept Biol, Limnol Lab, TR-06531 Ankara, Turkey; 2.Resource Survey & Dev Adm, Gen Directorate Elect Power, TR-06520 Ankara, Turkey; 3.Aarhus Univ, Natl Environm Res Inst, Dept Freshwater Ecol, DK-8600 Silkeborg, Denmark |
推荐引用方式 GB/T 7714 | Ozen, Arda,Karapinar, Burcu,Kucuk, Ismail,et al. Drought-induced changes in nutrient concentrations and retention in two shallow Mediterranean lakes subjected to different degrees of management[C]:SPRINGER,2010:61-72. |
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