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The application of DNA metabarcoding to insect bulk samples still requires some guidance on how to interpret the data provided, including taxon lists and read counts. To this end, it is particularly important to gain insights from samples taken under real field conditions. In our study, we compared butterfly data from Malaise trap samples identified by an expert and DNA metabarcoding. We calculated biomass, species richness, t...
Recovering European River Invertebrate Communities Homogenize or Differentiate Depending on Anthropogenic StressNARA Subscribed
Biodiversity loss can lead to biotic homogenization, whereby local communities within a region become increasingly similar over time, resulting in simplified communities with reduced functionality. However, our understanding of whether alleviating anthropogenic stress can reverse homogenization and promote biotic differentiation (i.e., increasing dissimilarity) remains limited, partly because the effectiveness of conservation...
Marine ecosystems have been historically impacted by human activities, leading to significant declines in biodiversity. Despite conservation efforts and the establishment of protected areas over recent decades, many marine species remain threatened. Here, we used a large‐scale database of 308 time series of coastal bird communities collected between 1957 and 2024 across three European regional seas to assess how abundance, tax...
Widespread insect losses are a critical global problem. Mitigating this problem requires identifying the principal drivers across different taxa and determining which insects are covered by protected areas. However, doing so is hindered by missing information on most species owing to extremely high insect diversity and difficulties in morphological identification. To address this knowledge gap, we used one of the most comprehe...
Freshwater ecosystems support nearly 10% of the Earth’s known species, making them vital biodiversity hotspots. However, this biodiversity and its associated critical functions are threatened by anthropogenic pressure, including invasive species. The New Zealand mud snail, Potamopyrgus antipodarum, is a prominent invader of freshwater ecosystems, having rapidly expanded across several continents in the last two centuries and p...
Motivation Here, we make available a second version of the BioTIME database, which compiles records of abundance estimates for species in sample events of ecological assemblages through time. The updated version expands version 1.0 of the database by doubling the number of studies and includes substantial additional curation to the taxonomic accuracy of the records, as well as the metadata. Moreover, we now provide an R packag...
Increasing evidence for insect biodiversity decline requires an identification of the causes but also an improved understanding of the limitations of the various underlying sampling methods. Trap comparisons foster comparability of larger-scale biodiversity studies by providing a deeper understanding of the variations in species abundances and trait compositions due to variations in trap characteristics. In our study, we compa...
Recovery and Degradation Drive Changes in the Dispersal Capacity of Stream Macroinvertebrate CommunitiesNARA Subscribed
Freshwater ecosystems face significant threats, including pollution, habitat loss, invasive species, and climate change. To address these challenges, management strategies and restoration efforts have been broadly implemented. Across Europe, such efforts have resulted in overall improvements in freshwater biodiversity, but recovery has stalled or failed to occur in many localities, which may be partly caused by the limited dis...
Ecological but Not Biological Traits of European Riverine Invertebrates Respond Consistently to Anthropogenic ImpactsNARA Subscribed
Aim To determine which riverine invertebrate traits respond consistently to anthropogenic impacts across multiple biogeographic regions. Location Europe. Time Period 1981–2021. Major Taxa Studied Riverine invertebrates. Methods We compiled a database of riverine invertebrate community time series for 673 sites across six European countries spanning six freshwater ecoregions. We compared trait responses to anthropogenic impacts...
Dispersal, glacial refugia and temperature shape biogeographical patterns in European freshwater biodiversityNARA Subscribed
Aim Temperature is regarded as an important driver of broad‐scale biodiversity patterns. However, less is known of the role of dispersal in shaping broad‐scale species and trait distributions, particularly given that species had to disperse out of glacial refugia after the Last Glacial Maximum (LGM). Here, we used a unique dataset describing the distributions of freshwater fauna combined with trait information to evaluate biod...
Understanding temporal variability across trophic levels and spatial scales in freshwater ecosystemsNARA Subscribed
A tenet of ecology is that temporal variability in ecological structure and processes tends to decrease with increasing spatial scales (from locales to regions) and levels of biological organization (from populations to communities). However, patterns in temporal variability across trophic levels and the mechanisms that produce them remain poorly understood. Here we analyzed the abundance time series of spatially structured co...
As alien invasive species are a key driver of biodiversity loss, understanding patterns of rapidly changing global species compositions depends upon knowledge of invasive species population dynamics and trends at large scales. Within this context, the Ponto-Caspian region is among the most notable donor regions for aquatic invasive species in Europe. Using macroinvertebrate time series collected over 52 years (1968–2020) at 26...