Publications by authors named "O N Aksenova"
Article Synopsis
- The study investigates how rising temperatures due to climate change affect ecosystems, particularly freshwater food webs in high-latitude regions like Iceland and Russia.
- Researchers conducted natural experiments in 14 streams with temperature increases of up to 20°C, discovering that warmer streams had less trophic diversity and a shift towards more reliance on local (autochthonous) carbon sources.
- The findings suggest that higher temperatures lead to simpler food webs, confirming predictions about the impacts of global warming on freshwater ecosystems at large scales.
Article Synopsis
- * Findings reveal that increasing temperatures generally decrease species richness of diatoms and invertebrates, but this effect varies by region and is stronger in areas with lower productivity.
- * Increased invertebrate biomass across all regions suggests that tolerant species may compensate for the decline in sensitive species, highlighting the importance of regional conditions in climate impact studies rather than assuming a one-size-fits-all effect.
The family Glossiphoniidae is a diverse and widespread clade of freshwater leeches, playing a significant role in functioning of aquatic ecosystems. The taxonomy and biogeography of leeches from temperate, subtropical, and tropical regions attracted much attention of zoologists, while their taxonomic richness and distribution in the Arctic are poorly understood. Here, we present an overview of the Eurasian Arctic Glossiphoniidae based on the most comprehensive occurrence and DNA sequence datasets sampled to date.
View Article and Find Full Text PDFEurope has a long history of human pressure on freshwater ecosystems. As pressure continues to grow and new threats emerge, there is an urgent need for conservation of freshwater biodiversity and its ecosystem services. However, whilst some taxonomic groups, mainly vertebrates, have received a disproportionate amount of attention and funds, other groups remain largely off the public and scientific radar.
View Article and Find Full Text PDFThe high-elevation Tibetan Plateau (western China) is inhabited by a unique, though not particularly species-rich, community of organisms. We explored the species content and evolutionary history of the Tibetan Plateau endemic freshwater snail genus Tibetoradix. Phylogenetic relationships within the genus were reconstructed based on available sequence data.
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