15 documents found, page 1 of 2

The global EPTO database: Worldwide occurrences of aquatic insects

Motivation: Aquatic insects comprise 64% of freshwater animal diversity and are widely used as bioindicators to assess water quality impairment and freshwater ecosystem health, as well as to test ecological hypotheses. Despite their importance, a comprehensive, global database of aquatic insect occurrences for mapping freshwater biodiversity in macroecological studies and applied freshwater research is missing....

The recovery of European freshwater biodiversity has come to a halt

Owing to a long history of anthropogenic pressures, freshwater ecosystems are among the most vulnerable to biodiversity loss1. Mitigation measures, including wastewater treatment and hydromorphological restoration, have aimed to improve environmental quality and foster the recovery of freshwater biodiversity2. Here, using 1,816 time series of freshwater invertebrate communities collected across 22 European coun...

Invasion impacts and dynamics of a European-wide introduced species

Globalization has led to the introduction of thousands of alien species worldwide. With growing impacts by invasive species, understanding the invasion process remains critical for predicting adverse effects and informing efficient management. Theoretically, invasion dynamics have been assumed to follow an "invasion curve" (S-shaped curve of available area invaded over time), but this dynamic has lacked empiric...

Nutrient enrichment is related to two facets of beta diversity for stream inver...

Made available in DSpace on 2022-04-29T07:17:21Z (GMT). No. of bitstreams: 0 Previous issue date: 2014-01-01; Beta diversity, the spatial or temporal variability of species composition, is a key concept in community ecology. However, our ability to predict the relative importance of the main drivers of beta diversity (e.g., environmental heterogeneity, dispersal limitation, and environmental productivity) remai...

Differential speciation rates, colonization time and niche conservatism affect ...

Made available in DSpace on 2021-06-25T11:01:27Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01; Aim: To test the importance of evolutionary and biogeographical processes in shaping the assembly of local frog communities in two adjacent regions (hereafter, coastal and inland regions) with different historical signatures. We asked two main questions: (1) why does the coastal region harbour more frog...

Beta diversity of stream insects differs between boreal and subtropical regions...

Made available in DSpace on 2021-06-25T10:17:36Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-03-01; Previous studies have found mixed results regarding the relationship between beta diversity and latitude. In addition, by influencing local environmental heterogeneity, land use maymodify spatial taxonomic and functional variability among communities causing biotic differentiation or homogenization. We ...

Scale-dependent patterns of metacommunity structuring in aquatic organisms acro...

Made available in DSpace on 2021-06-25T10:18:09Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-04-01; Aim: Evaluating how groups of organisms vary in dispersal capability and how environmental, spatial and temporal signals vary across multiple scales is critical to elucidating metacommunity theory. We examined whether the relative contributions of environmental, spatial and hydrological factors have dif...

Can taxonomic and functional metrics explain variation in the ecological unique...

Importance of local and landscape variables on multiple facets of stream fish b...

Made available in DSpace on 2020-12-12T02:49:13Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-01-01; Few studies have considered the effects of environmental variables at different spatial scales on Neotropical stream biodiversity. Furthermore, scale-related studies mostly include only one facet of biodiversity. To determine the contribution of local and landscape variables to the variation in the taxo...

Community size can affect the signals of ecological drift and niche selection o...

Made available in DSpace on 2020-12-12T01:24:05Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-06-01; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); Academy of Finland; Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Ecological drift can override the effects of deterministic niche selection on smal...