Abundance of insects and aerial insectivorous birds in relation to pesticide and fertilizer use
| Autor: | Wei Liang, Einar Flensted-Jensen, Indrikis Krams, Johannes Erritzøe, Anders Pape Møller, Dorota Czeszczewik, Wiesław Walankiewicz, Karsten Laursen |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
biology
Insect abundance Delichon Ecology fungi Insectivore Pesticide Insectivores biology.organism_classification Predation Insects Apus Aerial insectivores QL1-991 Abundance (ecology) Fecundity of insects Hirundo Animal Science and Zoology Zoology Ecology Evolution Behavior and Systematics Trophic level |
| Zdroj: | Avian Research, Vol 12, Iss 1, Pp 1-9 (2021) Møller, A P, Czeszczewik, D, Flensted-Jensen, E, Erritzøe, J, Krams, I, Laursen, K, Liang, W & Walankiewicz, W 2021, ' Abundance of insects and aerial insectivorous birds in relation to pesticide and fertilizer use ', Avian Research, vol. 12, no. 1, 43 . https://doi.org/10.1186/s40657-021-00278-1 |
| ISSN: | 2053-7166 |
| DOI: | 10.1186/s40657-021-00278-1 |
| Popis: | Background The abundance of insects has decreased considerably during recent decades, resulting in current abundance showing 70–80% reductions in more than 15 studies across temperate climate zones. Dramatic reductions in the abundance of insects are likely to have consequences for other taxa at higher trophic levels such as predators and parasites. Pesticides, fertilizers and agricultural land use are likely candidates accounting for such reductions in the abundance of insects. Methods Here we surveyed the abundance of flying insects, and the reduction in the abundance of insects as a consequence of intensive reduction in agricultural practice linked to fertilizer use and pesticide use. Finally we demonstrated consistency in abundance of birds among study sites. Results We demonstrated that the use of fertilizers and pesticides had reduced the abundance of insects, with consequences for the abundance of insectivorous bird species such as Barn Swallows (Hirundo rustica), House Martins (Delichon urbicum) and Swifts (Apus apus). Juvenile Barn Swallows were negatively affected by the reduced abundance of insects and hence the reproductive success of insectivorous bird species. These effects imply that the abundance of insects could be reduced by the availability of insect food. Conclusions These effects of intensive agriculture on insect food abundance are likely to have negative impacts on populations of insects and their avian predators. This hypothesis was validated by a reduction in the abundance of insects, linked to an increase in the abundance of fertilizers and a general change in farming practice. |
| Databáze: | OpenAIRE |
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