Impacts of hypercapnia and temperature on physiological performance of marine invertebrates from the Baltic Sea

Thomsen, Jörn; Saphörster, Julia; Heinemann, Agnes; Melzner, Frank

doi:10.1016/j.cbpa.2009.04.350

Cited by 2 publications

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“…Assessing the background fluctuations is particularly important in species-poor, marginal systems like the Baltic Sea, because (i) abiotic variability is pronounced due to the small size of the water body, to the highly variable wind-driven current system (Lehmann et al, 2011) and to the reduced buffer capacity of brackish water (Thomsen et al, 2009(Thomsen et al, , 2010BACC author group, 2008), and because (ii) low species rich-ness -especially when combined to low functional richnessmakes communities more vulnerable to environmental shifts (e.g. Wahl et al, 2011a), since functional gaps caused by the decline of a species cannot always be filled by a functionally equivalent species (e.g.…”

Section: Introductionmentioning

confidence: 99%

Natural variability in hard bottom communities and possible drivers assessed by a time-series study in the SW Baltic Sea: know the noise to detect the change

Wahl¹,

Hinrichsen²,

Lehmann³

et al. 2013

Preprint

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In order to detect shifts in community structure and function associated with global change, the natural background fluctuation in these traits must be known. In a 6-yr study we quantified year to year variability of taxonomic and functional composition of benthic hard bottom communities in the Western Baltic. While taxonomic fluctuations were substantial, functionality of the communities seems preserved in most cases. Environmental conditions potentially driving these fluctuations are winter temperatures and current regimes. We tentatively define a confidence range of natural variability in productivity, composition and diversity a departure from which might help identifying an ongoing regime shift driven by global change. In addition, we propose a statistical procedure distinguishing directional shifts ("signal") from natural fluctuations ("noise")

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Section: Introductionmentioning

confidence: 99%

Natural variability in hard bottom communities and possible drivers assessed by a time-series study in the SW Baltic Sea: know the noise to detect the change

Wahl¹,

Hinrichsen²,

Lehmann³

et al. 2013

Preprint

View full text Add to dashboard Cite

show abstract

“…Assessing the background fluctuations is particularly important in species-poor, marginal systems like the Baltic Sea, because (i) abiotic variability is pronounced due to the small size of the water body, to the highly variable wind-driven current system (Lehmann et al, 2011) and to the reduced buffer capacity of brackish water (Thomsen et al, 2009(Thomsen et al, , 2010BACC author group, 2008), and because (ii) low species richness -especially when combined to low functional richnessmakes communities more vulnerable to environmental shifts (e.g. Wahl et al, 2011a), since functional gaps caused by the decline of a species cannot always be filled by a functionally equivalent species (e.g.…”

Section: Wahl Et Al: Natural Variability In Hard-bottom Communitimentioning

confidence: 99%

Natural variability in hard-bottom communities and possible drivers assessed by a time-series study in the SW Baltic Sea: know the noise to detect the change

et al. 2013

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In order to detect shifts in community structure and function associated with global change, the natural background fluctuation in these traits must be known. In a 6 yr study we characterized the composition of young benthic communities at 7 sites along the 300 km coast of the Kiel and Lübeck bights in the German Baltic Sea and we quantified their interannual variability of taxonomic and functional composition. Along the salinity gradient from NW to SE, the relative abundance of primary producers decreased while that of heterotrophs increased. Along the same gradient, annual productivity tended to increase. Taxonomic and functional richness were higher in Kiel Bight as compared to Lübeck Bight. With increasing species richness functional group richness showed saturation indicating an increasing functional redundancy in species rich communities. While taxonomic fluctuations between years were substantial, functionality of the communities seem preserved in most cases. Environmental conditions potentially driving these fluctuations are winter temperatures and current regimes. We tentatively define a confidence range of natural variability in taxonomic and functional composition a departure from which might help identifying an ongoing regime shift driven by global change. In addition, we propose to use RELATE, a statistical procedure in the PRIMER (Plymouth Routines in Multivariate Ecological Research) package to distinguish directional shifts in time ("signal") from natural temporal fluctuations ("noise")

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Impacts of hypercapnia and temperature on physiological performance of marine invertebrates from the Baltic Sea

Cited by 2 publications

References 0 publications

Natural variability in hard bottom communities and possible drivers assessed by a time-series study in the SW Baltic Sea: know the noise to detect the change

Natural variability in hard bottom communities and possible drivers assessed by a time-series study in the SW Baltic Sea: know the noise to detect the change

Natural variability in hard-bottom communities and possible drivers assessed by a time-series study in the SW Baltic Sea: know the noise to detect the change

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