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Statements

Subject Item
n2:RIV%2F00216208%3A11310%2F09%3A10108585%21RIV12-MSM-11310___
rdf:type
n14:Vysledek skos:Concept
dcterms:description
Invertebrates inhabiting alpine water bodies are sensitive to environmental variability and lake faunal communities can therefore be important indicators of long-range airborne pollution, climate change and other human impacts. Information about the trophic structure and species composition of alpine lake ecosystems over space and time should therefore give important insights into environmental change effects. To explore the sensitivity of the faunal communities to environmental variability at local and regional scales we sampled biological and environmental variables from alpine lakes in seven different alpine lake districts in six European mountain regions. The fauna of the lakes was mainly composed of oligotrophic /ultraoligotrophic species, predominantly chironomids which made up more than 60% of all individuals. Species accumulation curves were used to explore patterns of species turnover and distribution, and the results indicated strong patterns in species diversity and also environmentally driven patterns in species distributions among lake districts. We used ordination analyses to explore these patterns in more detail. The results showed that the over-riding patterns in faunal assemblages were found between the lake districts. Lake-water chemistry appeared to be the major driver of the faunal assemblages at this scale, but altitude and geography could also account for significant fractions of the variability. In addition to these broad-scale patterns, repeatable trends in the faunal assemblages could be found in the faunal assemblages within lake districts. At this scale, the strongest compositional trends were found along the altitudinal gradient, but the faunal communities also responded to within- district variability in lake-water chemistry. Lake size or maximum depth did not appear to have any statistically significant effect on the littoral faunal assemblages at either scale. Invertebrates inhabiting alpine water bodies are sensitive to environmental variability and lake faunal communities can therefore be important indicators of long-range airborne pollution, climate change and other human impacts. Information about the trophic structure and species composition of alpine lake ecosystems over space and time should therefore give important insights into environmental change effects. To explore the sensitivity of the faunal communities to environmental variability at local and regional scales we sampled biological and environmental variables from alpine lakes in seven different alpine lake districts in six European mountain regions. The fauna of the lakes was mainly composed of oligotrophic /ultraoligotrophic species, predominantly chironomids which made up more than 60% of all individuals. Species accumulation curves were used to explore patterns of species turnover and distribution, and the results indicated strong patterns in species diversity and also environmentally driven patterns in species distributions among lake districts. We used ordination analyses to explore these patterns in more detail. The results showed that the over-riding patterns in faunal assemblages were found between the lake districts. Lake-water chemistry appeared to be the major driver of the faunal assemblages at this scale, but altitude and geography could also account for significant fractions of the variability. In addition to these broad-scale patterns, repeatable trends in the faunal assemblages could be found in the faunal assemblages within lake districts. At this scale, the strongest compositional trends were found along the altitudinal gradient, but the faunal communities also responded to within- district variability in lake-water chemistry. Lake size or maximum depth did not appear to have any statistically significant effect on the littoral faunal assemblages at either scale.
dcterms:title
Diversity and distribution patterns of benthic invertebrates along alpine gradients. A study of remote European freshwater lakes Diversity and distribution patterns of benthic invertebrates along alpine gradients. A study of remote European freshwater lakes
skos:prefLabel
Diversity and distribution patterns of benthic invertebrates along alpine gradients. A study of remote European freshwater lakes Diversity and distribution patterns of benthic invertebrates along alpine gradients. A study of remote European freshwater lakes
skos:notation
RIV/00216208:11310/09:10108585!RIV12-MSM-11310___
n4:aktivita
n5:R
n4:aktivity
R
n4:cisloPeriodika
11.2009
n4:dodaniDat
n10:2012
n4:domaciTvurceVysledku
n11:4199081
n4:druhVysledku
n17:J
n4:duvernostUdaju
n8:S
n4:entitaPredkladatele
n13:predkladatel
n4:idSjednocenehoVysledku
310922
n4:idVysledku
RIV/00216208:11310/09:10108585
n4:jazykVysledku
n15:eng
n4:klicovaSlova
environmental gradients; distribution; littoral invertebrates; Europe; alpine lakes
n4:klicoveSlovo
n6:Europe n6:environmental%20gradients n6:distribution n6:littoral%20invertebrates n6:alpine%20lakes
n4:kodStatuVydavatele
DE - Spolková republika Německo
n4:kontrolniKodProRIV
[CDD79144E627]
n4:nazevZdroje
Advances in Limnology
n4:obor
n12:EH
n4:pocetDomacichTvurcuVysledku
1
n4:pocetTvurcuVysledku
17
n4:rokUplatneniVysledku
n10:2009
n4:svazekPeriodika
62
n4:tvurceVysledku
Galas, Joanna Krno, Ilja Raddum, Gunnar G. Fjellheim, Arne Galdean, Nicolae Vidinova, Yanka Preda, Elena Brancelj, Anton Boggero, Angela Sporka, Ferdinand Cogalniceanu, Dan Vandvik, Vigdis Bitusik, Peter Stuchlík, Evžen Dumnicka, Elžbieta Risnoveanu, Geta Kownacki, Andrzej
s:issn
1612-166X
s:numberOfPages
24
n16:organizacniJednotka
11310