Ecological Allee effects modulate optimal strategies for conservation in agricultural landscapes
| Autor: | Irina Vortkamp, Frank M. Hilker, Frédéric Barraquand |
|---|---|
| Přispěvatelé: | University of Osnabrueck |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Natural resource economics Population Biodiversity 010603 evolutionary biology 01 natural sciences Profit (economics) symbols.namesake Agricultural productivity education Allee effect 2. Zero hunger Fragmented landscape Production Possibility Frontier [SDV.EE]Life Sciences [q-bio]/Ecology environment education.field_of_study Ecological-economic model Intensive farming business.industry 010604 marine biology & hydrobiology Ecological Modeling 15. Life on land Geography Habitat Agri-environment schemes 13. Climate action Agriculture symbols business |
| Zdroj: | Ecological Modelling Ecological Modelling, Elsevier, 2020, 435, pp.109208. ⟨10.1016/j.ecolmodel.2020.109208⟩ |
| ISSN: | 0304-3800 |
| DOI: | 10.1016/j.ecolmodel.2020.109208⟩ |
| Popis: | International audience; One target of biological conservation is the protection of biodiversity in agricultural landscapes. However, in their land-use decisions, farmers are often challenged with balancing biodiversity maintenance and profit generation. Under the current agricultural system, this tends to result in intensive farming which destroys suitable habitat for wild species. Thus, the potential for land-use conflicts between agriculture and biological conservation is high. Previous studies that investigated the effects of subsidies and taxes suggest mild trade-offs between conservation and farming, thus favouring land-sharing solutions to biological conservation. However, many ecological-economic models that dealt with this issue neglect possible Allee effects, which have been found by ecologists to be a common phenomenon. The existence of Allee effects markedly alters predictions of ecological-economic models: we show that conservation success is accompanied by substantial losses in agricultural production. More suitable habitat is required to prevent extinction of the species of interest, and conservation measures should start before the population has declined to some critical value. We emphasize the effect of spatial fragmentation on population viability under an Allee effect, as a clumped area of suitable habitat protects a population much better from extinction than a fragmented mosaic of habitat patches. |
| Databáze: | OpenAIRE |
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