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Environmental impacts - lake ecosystems
Adrian, R.; Hessen, D.O.; Blenckner, T.; Hillebrand, H.; Hilt, S.; Jeppesen, E.; Livingstone, D.M.; Trolle, D. (2016). Environmental impacts - lake ecosystems, in: Quante, M. et al. (Ed.) North Sea region climate change assessment. Regional Climate Studies, : pp. 315-340. hdl.handle.net/10.1007/978-3-319-39745-0_10
In: Quante, M.; Colijn, F. (Ed.) (2016). North Sea region climate change assessment. Regional Climate Studies. Springer: Switzerland. ISBN 978-3-319-39743-6. xlv, 528 pp., more
In: Regional Climate Studies. Springer: Berlin. ISSN 1862-0248; e-ISSN 1865-505X, more
Peer reviewed article  

Available in  Authors 

Keyword
    Fresh water

Authors  Top 
  • Adrian, R.
  • Hessen, D.O.
  • Blenckner, T.
  • Hillebrand, H.
  • Hilt, S.
  • Jeppesen, E.
  • Livingstone, D.M.
  • Trolle, D.

Abstract
    The North Sea region contains a vast number of lakes; from shallow, highly eutrophic water bodies in agricultural areas to deep, oligotrophic systems in pristine high-latitude or high-altitude areas. These freshwaters and the biota they contain are highly vulnerable to climate change. As largely closed systems, lakes are ideally suited to studying climate-induced effects via changes in ice cover, hydrology and temperature, as well as via biological communities (phenology, species and size distribution, food-web dynamics, life-history traits, growth and respiration, nutrient dynamics and ecosystem metabolism). This chapter focuses on change in natural lakes and on parameters for which their climate-driven responses have major impacts on ecosystem properties such as productivity, community composition, metabolism and biodiversity. It also points to the importance of addressing different temporal scales and variability in driving and response variables along with threshold-driven responses to environmental forces. Exceedance of critical thresholds may result in abrupt changes in particular elements of an ecosystem. Modelling climate-driven physical responses like ice-cover duration, stratification periods and thermal profiles in lakes have shown major advances, and the chapter provide recent achievements in this field for northern lakes. Finally, there is a tentative summary of the level of certainty for key climatic impacts on freshwater ecosystems. Wherever possible, data and examples are drawn from the North Sea region.

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