Zooplankton carcasses and non-predatory mortality in freshwater and inland sea environments

Описание

Тип публикации: статья из журнала

Год издания: 2014

Идентификатор DOI: 10.1093/plankt/fbu014

Ключевые слова: carbon flux, inland waters, lakes, live, dead sorting, non-predatory mortality, zooplankton carcasses, live/dead sorting, freshwater ecosystem, growing season, inland sea, marine ecosystem, mortality, water column, zooplankton

Аннотация: Zooplankton carcasses are ubiquitous in marine and freshwater systems, implicating the importance of non-predatory mortality, but both are often overlooked in ecological studies compared with predatory mortality. The development of several microscopic methods allows the distinction between live and dead zooplankton in field samplesПоказать полностью, and the reported percentages of dead zooplankton average 11.6 (minimum) to 59.8 (maximum) in marine environments, and 7.4 (minimum) to 47.6 (maximum) in fresh and inland waters. Common causes of non-predatory mortality among zooplankton include senescence, temperature change, physical and chemical stresses, parasitism and food-related factors. Carcasses resulting from non-predatory mortality may undergo decomposition leading to an increase in microbial production and a shift in microbial composition in the water column. Alternatively, sinking carcasses may contribute significantly to vertical carbon flux especially outside the phytoplankton growth seasons, and become a food source for the benthos. Global climate change is already altering freshwater ecosystems on multiple levels, and likely will have significant positive or negative effects on zooplankton non-predatory mortality. Better spatial and temporal studies of zooplankton carcasses and non-predatory mortality rates will improve our understanding of this important but under-appreciated topic.

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Издание

Журнал: JOURNAL OF PLANKTON RESEARCH

Выпуск журнала: Vol. 36, Is. 3

Номера страниц: 597-612

ISSN журнала: 01427873

Место издания: OXFORD

Издатель: OXFORD UNIV PRESS

Авторы

  • Tang K.W. (Department of Biosciences, Swansea University)
  • Gladyshev M.I. (Siberian Federal University)
  • Dubovskaya O.P. (Siberian Federal University)
  • Kirillin G. (Department of Ecohydrology, Leibniz-Institute of Freshwater Ecology and Inland Fisheries)
  • Grossart H.P. (Institute for Biochemistry and Biology, Potsdam University)

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