Insecticides and Drought as a Fatal Combination for a Stream Macroinvertebrate Assemblage in a Catchment Area Exploited by Large-Scale Agriculture
| Autor: | Marek Let, Martin Bláha, Antonín Kouba, Jan Špaček, Martin Ferenčík |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Geography Planning and Development prameny pyrethroid insecticide 010501 environmental sciences Aquatic Science 01 natural sciences Biochemistry chlorpyrifos hydrologická sucha bentické druhy Isopoda contamination headwaters hydrological droughts Assemblage (archaeology) Taxonomic rank Predator TD201-500 organofosfátový insekticid 0105 earth and related environmental sciences Water Science and Technology biology Water supply for domestic and industrial purposes business.industry Ecology benthic species 010604 marine biology & hydrobiology Hydraulic engineering pyrethroidní insekticid biology.organism_classification organophosphate insecticide funkční skupiny krmení Taxon kontaminace Agriculture cypermethrin functional feeding groups Arthropod business TC1-978 Surface water |
| Zdroj: | Water Volume 13 Issue 10 Water, Vol 13, Iss 1352, p 1352 (2021) |
| ISSN: | 2073-4441 |
| DOI: | 10.3390/w13101352 |
| Popis: | This case study documents responses in a headwater macroinvertebrate assemblage to insecticide pollution and hydrological drought. In 2014, the Doubravka brook (Czech Republic) was damaged by a large overflow of a mixture of chlorpyrifos (CPS) and cypermethrin (CP). In 2016–2017, this brook was then affected by severe drought that sometimes led to an almost complete absence of surface water. We found significant relationships between the strength of both these disturbances and the deeper taxonomic levels of both the overall macroinvertebrate assemblage (classes) and the arthropod assemblage alone (orders and dipteran families), as well as the functional feeding groups (FFGs). The CPS-CP contamination was mostly negatively correlated to arthropod and non-arthropod taxa and was positively correlated only with FFG collector-gatherers on the other hand, the drought was negatively correlated to Simuliidae, Ephemeroptera, Trichoptera, and the FFG of grazer-scrapers and passive filterers. Drought conditions correlated most positively with Isopoda, Ostracoda, Heteroptera, adult Coleoptera, and predator and active filterer FFGs. The chosen eco-indicators (SPEARpesticides, SPEARrefuge, BMWP, and EPT) used as support information reveal the poor ecological status of the whole assemblage, including the control site, the cause of which is most likely to be the exploitation of the adjacent catchment area by large-scale agriculture. This type of agricultural exploitation will undoubtedly affect macroinvertebrate assemblages as a result of agrochemical and soil inputs during run-off events and will also exacerbate the effect of droughts when precipitation levels drop. |
| Databáze: | OpenAIRE |
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