The Application of Chironomid Pupal Exuvial Technique (CPET) for Ecological Analysis in a Neotropical Large River System
| Autor: | Ana Mestre, Analia Constancia Paggi, Luciana Montalto |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Beta diversity Drift Floodplain Otras Ciencias Biológicas 010603 evolutionary biology 01 natural sciences Chironomidae Ciencias Biológicas Paleontology Paraná river floodplain Rivers Dominance (ecology) Animals Ciencias Naturales Flood pulse Ecosystem Population Density geography geography.geographical_feature_category biology Ecology 010604 marine biology & hydrobiology Assemblage Pupa Polypedilum PARANÁ RIVER FLOODPLAIN Biodiversity biology.organism_classification BETA DIVERSITY Taxon DRIFT Habitat Insect Science FLOOD PULSE Species richness ASSEMBLAGE CIENCIAS NATURALES Y EXACTAS Brazil |
| Zdroj: | SEDICI (UNLP) Universidad Nacional de La Plata instacron:UNLP |
| Popis: | This field ecological study, based on the chironomid pupal exuvial technique (CPET), is new for the Paraná River and proposes an efficient tool to be used in future ecological approaches and biomonitoring. Drifting of pupal exuviae in a river-floodplain system of the Middle Paraná River floodplain was represented by 34 Chironomidae taxa, being the characteristic association obtained from the CPET: Lopescladius, Onconeura, Paralauterborniella, Polypedilum, and Harnischia complex. Diversity, richness, dominance, total density, and density of dominant taxa were different between the longitudinal and lateral dimensions but not between hydrologic phases, with a greater diversity and richness in the main channel of the river and higher density and dominance in floodplain habitats. The species turnover is the dominant process in structuring studied assemblages in spatial and temporal analysis, increasing in the floodplain habitats and in low-water phase. The results obtained showed that drifting exuviae in the longitudinal axis were coming from different assemblages and environments of a wider area (regional), while exuviae recorded in the connections of the floodplain environments in the lateral dimension could reflect the local assemblages. We demonstrated the ecological value of CPET studies to interpret the attributes of Chironomidae assemblage in river-floodplain systems of large rivers in an integrated way. Instituto de Limnología "Dr. Raúl A. Ringuelet" |
| Databáze: | OpenAIRE |
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