Bionomy and Secondary Production of Midges Inhabiting Wood: Unravelling Linkages at a Large River System
| Autor: | J. L. del Barco, Florencia Lucila Zilli |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
chemistry.chemical_classification
Larva Biomass (ecology) Ecology Immunology Biodiversity Cell Biology Aquatic Science Biology biology.organism_classification Pupa Endocrinology Taxon chemistry Insect Science Midge Genetics Animal Science and Zoology Organic matter Species richness Ecology Evolution Behavior and Systematics |
| Zdroj: | Proceedings of the Zoological Society. 73:137-146 |
| ISSN: | 0974-6919 0373-5893 |
| DOI: | 10.1007/s12595-019-00310-9 |
| Popis: | In the near pristine free-flowing section of the Parana River the biomass, organic matter, annual and cohort production and turnover ratios of midges inhabiting LWD were estimated. Richness and frequency of occurrence of the stages, genera and functional feeding groups of midges were calculated. Generalized linear mixed effect models were performed to evaluate whether environmental and woods characteristics predicted the biomass of midges. Eggs, larvae, pupae and imagoes of 32 taxa and functional groups were collected. Biomass was of 44.79 mg/m2 and AFDW was of 28.1 mg/m2, on average, with the maximum values obtained for collectors and shredders. Water transparency was the only one significant predictor of midge stocks. Annual production ranged between 190 and 858 g/m2 year and P/B between 31 and 224. The natural free-flowing conditions and high food availability, provide woody substrates that favour a high production and overlap in resource utilization, thus supporting a high diversity of midges. |
| Databáze: | OpenAIRE |
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