Predation Pressure on Sentinel Insect Prey along a Riverside Urbanization Gradient in Hungary
Urbanization is one of the most important global trends which causes habitat reduction and alteration which are, in turn, the main reasons for the well-documented reduction in structural and functional diversity in urbanized environments. In contrast, effects on ecological mechanisms are less known....
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-02-01
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| Series: | Insects |
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| Online Access: | https://www.mdpi.com/2075-4450/11/2/97 |
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| author | Csaba Béla Eötvös Gábor L. Lövei Tibor Magura |
| author_facet | Csaba Béla Eötvös Gábor L. Lövei Tibor Magura |
| author_sort | Csaba Béla Eötvös |
| collection | DOAJ |
| description | Urbanization is one of the most important global trends which causes habitat reduction and alteration which are, in turn, the main reasons for the well-documented reduction in structural and functional diversity in urbanized environments. In contrast, effects on ecological mechanisms are less known. Predation is one of the most important ecological functions because of its community-structuring effects. We studied six forest habitats along a riverside urbanization gradient in Szeged, a major city in southern Hungary, crossed by the river Tisza, to describe how extreme events (e.g., floods) as primary selective pressure act on adaptation in riparian habitats. We found a generally decreasing predation pressure from rural to urban habitats as predicted by the increasing disturbance hypothesis (higher predator abundances in rural than in urban habitats). The only predators that reacted differently to urbanization were ground active arthropods, where results conformed to the prediction of the intermediate disturbance hypothesis (higher abundance in moderately disturbed suburban habitats). We did not find any evidence that communities exposed to extreme flood events were preadapted to the effects of urbanization. The probable reason is that changes accompanied by urbanization are much faster than natural landscape change, so the communities cannot adapt to them. |
| first_indexed | 2024-12-21T10:47:28Z |
| format | Article |
| id | doaj.art-79f1feb73c5c499584f226416b7b5d32 |
| institution | Directory Open Access Journal |
| issn | 2075-4450 |
| language | English |
| last_indexed | 2024-12-21T10:47:28Z |
| publishDate | 2020-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Insects |
| spelling | doaj.art-79f1feb73c5c499584f226416b7b5d322022-12-21T19:06:46ZengMDPI AGInsects2075-44502020-02-011129710.3390/insects11020097insects11020097Predation Pressure on Sentinel Insect Prey along a Riverside Urbanization Gradient in HungaryCsaba Béla Eötvös0Gábor L. Lövei1Tibor Magura2Department of Ecology, University of Debrecen, H-4032 Debrecen, HungaryDepartment of Agroecology, Aarhus University, Flakkebjerg Research Centre, DK-4200 Slagelse, DenmarkDepartment of Ecology, University of Debrecen, H-4032 Debrecen, HungaryUrbanization is one of the most important global trends which causes habitat reduction and alteration which are, in turn, the main reasons for the well-documented reduction in structural and functional diversity in urbanized environments. In contrast, effects on ecological mechanisms are less known. Predation is one of the most important ecological functions because of its community-structuring effects. We studied six forest habitats along a riverside urbanization gradient in Szeged, a major city in southern Hungary, crossed by the river Tisza, to describe how extreme events (e.g., floods) as primary selective pressure act on adaptation in riparian habitats. We found a generally decreasing predation pressure from rural to urban habitats as predicted by the increasing disturbance hypothesis (higher predator abundances in rural than in urban habitats). The only predators that reacted differently to urbanization were ground active arthropods, where results conformed to the prediction of the intermediate disturbance hypothesis (higher abundance in moderately disturbed suburban habitats). We did not find any evidence that communities exposed to extreme flood events were preadapted to the effects of urbanization. The probable reason is that changes accompanied by urbanization are much faster than natural landscape change, so the communities cannot adapt to them.https://www.mdpi.com/2075-4450/11/2/97urbanruralecological functionpredationpredation paradoxsentinel preycaterpillararthropodmammalbird |
| spellingShingle | Csaba Béla Eötvös Gábor L. Lövei Tibor Magura Predation Pressure on Sentinel Insect Prey along a Riverside Urbanization Gradient in Hungary Insects urban rural ecological function predation predation paradox sentinel prey caterpillar arthropod mammal bird |
| title | Predation Pressure on Sentinel Insect Prey along a Riverside Urbanization Gradient in Hungary |
| title_full | Predation Pressure on Sentinel Insect Prey along a Riverside Urbanization Gradient in Hungary |
| title_fullStr | Predation Pressure on Sentinel Insect Prey along a Riverside Urbanization Gradient in Hungary |
| title_full_unstemmed | Predation Pressure on Sentinel Insect Prey along a Riverside Urbanization Gradient in Hungary |
| title_short | Predation Pressure on Sentinel Insect Prey along a Riverside Urbanization Gradient in Hungary |
| title_sort | predation pressure on sentinel insect prey along a riverside urbanization gradient in hungary |
| topic | urban rural ecological function predation predation paradox sentinel prey caterpillar arthropod mammal bird |
| url | https://www.mdpi.com/2075-4450/11/2/97 |
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