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Cascading effects o...
Cascading effects of the ctenophore Mnemiopsis leidyi on the planktonic food web in a nutrient-limited estuarine system
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Dinasquet, Julie (author)
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Titelman, Josefin (author)
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- Møller, Lene Friis (author)
- Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences,University of Gothenburg
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Setälä, O (author)
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- Granhag, Lena, 1974 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences,University of Gothenburg
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Andersen, T (author)
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- Båmstedt, Ulf (author)
- Umeå universitet,Institutionen för ekologi, miljö och geovetenskap,EcoChange
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- Haraldsson, Matilda, 1980 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences,University of Gothenburg
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Hosia, A (author)
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Katajisto, T (author)
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Kragh, T (author)
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Kuparinen, J (author)
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Schrøter, ML (author)
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Søndergaard, M (author)
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- Tiselius, Peter, 1958 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences,University of Gothenburg
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Riemann, L (author)
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(creator_code:org_t)
- Inter-Research Science Center, 2012
- 2012
- English.
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In: Marine Ecology Progress Serie. - : Inter-Research Science Center. - 0171-8630 .- 1616-1599. ; 460, s. 49-61
- Related links:
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http://dx.doi.org/10...
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Abstract
Subject headings
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- Increasing biomasses of gelatinous zooplankton presumably have major implications for the structure and function of marine food webs at large; however, current data on lower trophic levels are scarce, as most studies have focused on the immediate effects on zooplankton and fish larvae only. We examined the short-term impact of larvae and adults of the invasive ctenophore Mnemiopsis leidyi on a summer planktonic food web in the estuarine southern Baltic Sea, with special emphasis on the microbial loop. Grazing by M. leidyi reduced the mesozooplankton biomass, followed by increased dinoflagellate biomass in treatments with M. leidyi. While chlorophyll a increased most in the treatments with M. leidyi, small phytoplankton and ciliates decreased in all treatments. M. leidyi had a slight effect on bacterial abundance, but not on bacterial production, ectoenzymatic activities, or community composition. Undetectable levels of phosphate and a gradual accumulation of dissolved organic carbon during the experiment suggested a malfunctioning microbial loop scenario. The experiment shows that direct and indirect short-term effects of M. leidyi on the estuarine food web are limited to higher trophic levels and indicates that top-down and bottom-up consequences of M. leidyi expansions on the microbial loop will likely depend on local nutrient conditions.
Subject headings
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Keyword
- Bacterioplankton
- Nanoflagellates
- Microbial loop
- Trophic levels
- Ciliates
- Baltic Sea
- Nanoflagellates
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Dinasquet, Julie
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Titelman, Josefi ...
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Møller, Lene Fri ...
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Setälä, O
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Granhag, Lena, 1 ...
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Andersen, T
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show more...
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Båmstedt, Ulf
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Haraldsson, Mati ...
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Hosia, A
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Katajisto, T
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Kragh, T
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Kuparinen, J
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Schrøter, ML
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Søndergaard, M
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Tiselius, Peter, ...
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Riemann, L
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Ecology
- Articles in the publication
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Marine Ecology P ...
- By the university
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University of Gothenburg
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Chalmers University of Technology
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Umeå University