Publications by authors named "L Casatti"
Aquatic macrophytes encompass a highly diverse group of plants with different strategies, niche requirements, and dispersion capacities. Therefore, macrophyte life forms can respond distinctly to environmental factors. We analyzed whether emergent/amphibious, floating-leaves/rooted submerged, and free-floating/free-submerged macrophytes respond differently to local, spatial, and land use variables in ponds and streams of the Amazon.
View Article and Find Full Text PDFThe development of multimetric indices (MMIs) to measure the biotic condition of aquatic habitats is based on metrics derived from biological assemblages. Considering fish assemblages, the inconsistencies in metrics responses outside of the places where they were developed limit MMI transferability and applicability to other locations, requiring local calibration. The factors behind the low transferability of these MMIs are still poorly understood.
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- The study investigates how environmental factors and human impacts influence the distribution of fish communities in the Upper Paraná ecoregion in South America.
- Researchers analyzed data from 586 fish sampling points, focusing on local beta diversity and alpha diversity, and found high beta diversity overall, with richer fish communities found more centrally in the ecoregion.
- Key findings highlight that both environmental filters and dispersal limitations significantly shape fish assemblages, emphasizing the necessity of using multiple predictors to understand biodiversity better.
Article Synopsis
- Understanding species coexistence can be improved by studying trait variability in individual tadpoles and across species, particularly because of the unique characteristics of tadpole assemblages.
- This study analyzed 678 tadpoles from 22 species in 43 ponds, measuring eight functional traits tied to their habitat use and swimming abilities to determine how these traits influence community structure.
- Results indicated that about 33% of trait variability stemmed from differences within species, with notable variations in how traits are affected by external vs. internal filtering, suggesting that both intraspecific and interspecific traits are crucial for understanding species coexistence.
Several hypotheses are used to explain species richness patterns. Some of them (e.g.
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