We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Los invertebrados y la calidad del hábitat como indicadores de la condición biológica de la costa del Río de la Plata, Argentina
Summary
Researchers analyzed the structural and functional characteristics of meso- and macroinvertebrate assemblages along 155 km of the freshwater intertidal zone of the Río de la Plata estuary in Argentina, using invertebrates and habitat quality as biological condition indicators. The study assessed how human development and pollution stress along this ecologically and socioeconomically important estuary affect aquatic invertebrate communities.
Estuaries are productive ecosystems that provide ecosystem goods and services, although human development causes stresses that deteriorate the quality of their waters. The Río de la Plata river presents geographic and socioeconomic relevance, besides areas of importance in the conservation of biodiversity. The objective of this study was to analyze some of the structural and functional characteristics of the meso and macroinvertebrate assemblage along 155 km of the freshwater intertidal zone, applying multivariate analysis and comparing the sampling sites subject to different types of anthropogenic disturbances. Fifty-eight taxa were identified whose total abundance ranged from 570 to 345000 individuals/m2. The highest values of richness, structural and functional diversity, and percentages of sensitive taxa were recorded in recreational areas that have vegetated coasts, a high degree of connectivity and a natural state of riparian habitats. The multivariate analysis organized the sampling sites along a turbidity-conductivity gradient and a eutrophication-contamination gradient. The cluster analysis revealed the following groups: 1) sites with little impact of protected and recreational areas, 2) sites with anthropogenic impact and domestic discharges, 3) sites highly impacted by industrial and sewage discharges, and 4) sites located close to the front of maximum turbidity. These results showed that the characteristics of the habitat and the water determine the assemblages of invertebrates. The structural and functional descriptors analyzed can act reliably in the evaluation of the ecological quality and the biotic integrity of the Argentinian intertidal sector of the river.
Sign in to start a discussion.
More Papers Like This
First Assessment of Microplastics and Invertebrate Fauna in the Hyporheic Zone of the Large Paraná River (Argentina)
Researchers conducted the first assessment of microplastics and invertebrate fauna in the hyporheic sediments of the Paraná River, Argentina, recording nine invertebrate species for the first time in this zone alongside microplastic contamination data.
Microplastics integrating the coastal planktonic community in the inner zone of the Río de la Plata estuary (South America)
Researchers found microplastics integrated into the coastal planktonic community in the inner Río de la Plata estuary in South America, characterizing the abundance, size, type, and color of plastic particles and examining their relationships with plankton size and morphology.
Microplastics accumulation in an estuarine ecosystem and ecotoxicological effects of plastic leachates on a benthic copepod
Researchers assessed microplastic accumulation over one year in an urbanized zone of the Rio de la Plata estuary in Argentina, and tested effects on local marine organisms. Microplastic concentrations varied seasonally, and ecotoxicity tests confirmed that estuarine organisms experienced measurable stress from ambient contamination levels.
Evaluación De La Presencia De Microplásticos En Playas Del Río Del La Plata: Ciudad De Buenos Aires Y Alrededores
Microplastics were found in beach sediments along the Río de la Plata near Buenos Aires in both winter and spring surveys, confirming urban plastic pollution has reached coastal environments close to one of South America's largest cities.
Temporal patterns in the abundance, type and composition of microplastics on the coast of the Río de la Plata estuary
Researchers monitored microplastic abundance, type, and composition monthly for one year in water and intertidal sediment at an urbanized site on the Río de la Plata estuary in Argentina, finding temporal patterns linked to environmental factors including river flow and seasonal variation.