Context dependency in biodiversity patterns of central German stream metacommunities

Freshwater Biology, Journal Year: 2016, Volume and Issue: 61(5), P. 607 - 620

Published: Feb. 12, 2016

Summary Context dependency is an emerging topic that challenging our understanding of the factors shaping biodiversity in metacommunities. River networks and other dendritic systems provide unique for examining variation processes between different We examined patterns five benthic invertebrate data sets, from two catchments central Germany, with aim exploring context these systems. used variance partitioning to disentangle explained three metrics: taxonomic richness, Simpson's diversity local contribution beta (LCBD; a measure uniqueness site). As explanatory variables, we proxies network position (i.e. catchment size altitude) habitat conditions. Contrary expectation, found no evidence decline LCBD downstream study. Local conditions land use played much stronger role than altitude explaining metrics. Observed were highly variable sets These findings suggest are dependent less related their along river Given clear urge researchers focus on disentangling driving high levels variability individual through study number replicate, rather single,

Language: Английский

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Patterns and assembly processes of planktonic and sedimentary bacterial community differ along a trophic gradient in freshwater lakes

Ecological Indicators, Journal Year: 2019, Volume and Issue: 106, P. 105491 - 105491

Published: June 21, 2019

Language: Английский

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Functional diversity and community assembly of river invertebrates show globally consistent responses to decreasing glacier cover

Nature Ecology & Evolution, Journal Year: 2017, Volume and Issue: 2(2), P. 325 - 333

Published: Dec. 15, 2017

Language: Английский

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DISPERSE, a trait database to assess the dispersal potential of European aquatic macroinvertebrates

Scientific Data, Journal Year: 2020, Volume and Issue: 7(1)

Published: Nov. 11, 2020

Dispersal is an essential process in population and community dynamics, but difficult to measure the field. In freshwater ecosystems, information on biological traits related organisms' morphology, life history behaviour provides useful dispersal proxies, remains scattered or unpublished for many taxa. We compiled multiple dispersal-related of European aquatic macroinvertebrates a unique resource, DISPERSE database. includes nine subdivided into 39 trait categories 480 taxa, including Annelida, Mollusca, Platyhelminthes, Arthropoda such as Crustacea Insecta, generally at genus level. Information within can be used address fundamental research questions metapopulation ecology, metacommunity macroecology evolutionary ecology. proxies applied improve predictions ecological responses global change, inform improvements biomonitoring, conservation management strategies. The diverse sources complement existing databases by providing new traits, most which would not otherwise accessible scientific community.

Language: Английский

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Contrasting metacommunity structure and beta diversity in an aquatic‐floodplain system

Oikos, Journal Year: 2015, Volume and Issue: 125(5), P. 686 - 697

Published: Aug. 19, 2015

Habitat connectivity and dispersal interact to structure metacommunities, but few studies have examined these patterns jointly for organisms across the aquatic–terrestrial ecotone. We assessed metacommunity beta diversity of instream benthic invertebrates, riparian carabid beetles (Order: Coleoptera; Family: Carabidae) spiders Araneae) at fifteen sites in a river‐floodplain system. Sampling took place over three‐year period (2010–2012) Rhine‐Main‐Observatory LTER site on Kinzig River, central Germany. This allowed disentangling combined influence, temporal variability, habitat (i.e. between aquatic terrestrial) ability beetles, aerial dispersing invertebrates) dominant paradigms structuring metacommunities. found mostly consistent differences manner that metacommunities were structured groups, with lower levels variability explained compared other groups. Beetles consistently more by turnover than nestedness components, greater expected chance minor spatial environmental signal emerging variance partitioning. Conversely, invertebrates had null expectation, clearer controlling structure. Our results suggest varying mass effects species sorting shape depending ability. That is, fragmentation along river terrestrial zone promoted effects, overall mode active passive) communities shifted sorting.

Language: Английский

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