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Responses of Fish Trophic Guilds to Dams in Neotropical River Systems: A Systematic Meta‐Analytic ReviewNARA Subscribed
In Neotropical river systems, dams promote profound physical and biological changes by disrupting longitudinal connectivity, altering flow regimes, and modifying nutrient and energy pathways. These transformations have the potential to reshape the trophic organization of fish assemblages. Here, we conducted a systematic review and multilevel meta‐analysis to evaluate the effects of river impoundment on species richness within...
Deforestation around subtropical streams drives taxonomic and functional nestedness of aquatic insect communitiesNARA Subscribed
Deforestation in river catchments alters freshwater ecosystem conditions, leading to biodiversity loss. However, it remains unclear whether these losses occur sequentially, resulting in taxonomic and functional nested patterns among communities. We investigated whether deforestation surrounding streams leads to taxonomic and functional nestedness of aquatic insects, reflecting differences in species tolerance to anthropogenic...
Body size is a key trait in ecology due to its influence on metabolism and many other life‐history traits that affect population and community responses to environmental variation as well as ecosystem properties. The size spectrum represents the relationship between abundance (or biomass) and body size, independent of species identity. Size spectrum parameters, such as the slope or intercept, have been applied extensively as i...
FreshLanDiv : A Global Database of Freshwater Biodiversity Across Different Land UsesNARA Subscribed
Motivation Freshwater ecosystems have been heavily impacted by land‐use changes, but data syntheses on these impacts are still limited. Here, we compiled a global database encompassing 241 studies with species abundance data (from multiple biological groups and geographic locations) across sites with different land‐use categories. This compilation will be useful for addressing questions regarding land‐use change and its impact...
Ecosystem services provided by river-floodplain ecosystemsNARA Subscribed
Land‐use intensification systematically alters the size structure of aquatic communities in the NeotropicsNARA Subscribed
Land‐use and land‐cover transitions can affect biodiversity and ecosystem functioning in a myriad of ways, including how energy is transferred within food‐webs. Size spectra (i.e. relationships between body size and biomass or abundance) provide a means to assess how food‐webs respond to environmental stressors by depicting how energy is transferred from small to larger organisms. Here, we investigated changes in the size spec...
NEOTROPICAL FRESHWATER FISHES : A dataset of occurrence and abundance of freshwater fishes in the NeotropicsNARA Subscribed
The Neotropical region hosts 4225 freshwater fish species, ranking first among the world's most diverse regions for freshwater fishes. Our NEOTROPICAL FRESHWATER FISHES data set is the first to produce a large‐scale Neotropical freshwater fish inventory, covering the entire Neotropical region from Mexico and the Caribbean in the north to the southern limits in Argentina, Paraguay, Chile, and Uruguay. We compiled 185,787 distri...
While land use intensification is a major driver of biodiversity change in streams, the nature of such changes, and at which scales they occur, have not been synthesized. To synthesize how land use change has altered multiple components of stream biodiversity across scales, we compiled data from 37 studies where comparative data were available for species' total and relative abundances from multiple locations including referen...
Historical legacies and contemporary processes shape beta diversity in Neotropical montane streamsNARA Subscribed
Aim Contemporary dispersal constraints and environmental conditions are broadly recognized as significant drivers of beta diversity patterns. However, beta diversity patterns may also reflect the legacy of past climatic and geological events. In this study, we investigated the relative importance of historical and contemporary factors as drivers of taxonomic, functional and phylogenetic beta diversity in Neotropical stream com...
Community size can affect the signals of ecological drift and niche selection on biodiversityNARA Subscribed
Ecological drift can override the effects of deterministic niche selection on small populations and drive the assembly of some ecological communities. We tested this hypothesis with a unique data set sampled identically in 200 streams in two regions (tropical Brazil and boreal Finland) that differ in macroinvertebrate community size by fivefold. Null models allowed us to estimate the magnitude to which β‐diversity deviates fro...