Titlebook: European Large Lakes; Ecosystem changes an Tiina N?ges,Reiner Eckmann,Markku Viljanen Book 2008 Springer Science+Business Media B.V. 2008 E

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Increasingly ice-free winters and their effects on water quality in Sweden’s largest lakesquality changes such as changes in sulphate concentration might rather be attributed to changes in atmospheric deposition. To explain water quality changes in Sweden’s largest lakes it is important to consider changes in both climate and atmospheric deposition as well as catchment measures.

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Phosphorus fractions and alkaline phosphatase activity in sediments of a large eutrophic Chinese lak organically-bound P is an important portion of the sediment phosphorus in Lake Taihu. It is mainly derived from freshly-settled autochthonous particles and from external discharges. Organically-bound P induces APA and may lead to the release of bioavailable phosphates from the organic sediments, th

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驚奇

Plant-associated invertebrates and hydrological balance in the large volcanic Lake Bracciano (Centraprojected warming of climate and decreasing amount of precipitation by nearly an order of magnitude. In a low water level year, littoral macrophytes and invertebrate assemblages exhibited qualitative and quantitative differences at all sampling sites and depths. The invertebrate assemblage showed a

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re often areas in which economic, cultural and political interests overlap. In this book the problems regarding the present status of European large lakes and the directions of change are discussed. Threats cau978-90-481-7861-2978-1-4020-8379-2

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一美元

N. A. Stolwijk,F. Wenwer,H. Bracht,H. Mehrerhowed that water transparency had the strongest influence on diatoms, while temperature, pH and alkalinity had lesser impacts. Our study shows that the planktonic:periphytic diatom ratio in the sediment can be used to track overall trends of the lake-level changes in Lake V?rtsj?rv before the onset

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,Ficksche Gleichungen und L?sungen,ounds has been relatively stable over the years and can be related to differences in natural conditions between different parts of the lake. Our study indicates that Lake Peipsi is quite resistant to year-to-year changes in N load, and the in-lake N concentrations are quite stable on a long-term sca