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| Content Provider | Springer Nature Link |
|---|---|
| Author | Ewald, J. A. Touyéras, H. |
| Copyright Year | 2002 |
| Abstract | As UK grey partridge (Perdix perdix) numbers declined over the last half century, shooting estates changed the emphasis of game management, from wild grey partridges to reared released pheasants (Phasianus colchicus). A recent theory suggested that parasites carried by reared released pheasants may be partially responsible for the decline in the numbers of grey partridges. We used long-running monitoring data from two sites in lowland England to look for relationships between proximity to pheasant release pens and grey partridge population parameters 1. At one study area, 20 km2 for 18 years proximity to release pens was associated with young-to-old ratio. However, the effect of proximity to release pens was probably an effect of habitat composition, as partridge-friendly habitats such as beetle banks and cereal crops were found away from release pens, with less favoured habitats such as grass, winter game cover crops and natural regeneration set-aside being found near release pens. 2. In the other study area, 62km2 for 33 years we found no effect of proximity to release pens on grey partridge density, fecundity or survival. In conclusion, we were unable to find convincing evidence for an effect of proximity of pheasant release pens.Da in den vergangenen 50 Jahren die Bestände des Rebhuhns (Perdix perdix) im Vereinigten Königreich abnahmen, wurde in vielen Jagdgebieten der Schwerpunkt der Wildbewirtschaftung vom Rebhuhn weg und hin zum Aussetzen gezüchteter Fasanen verlagert. Nach einer in jüngerer Zeit vorgebrachten Theorie könnten von freigelassenen Zuchtfasanen verbreitete Parasiten für den Bestandesrückgang der Rebhühner mit verantwortlich sein. Wir nutzten die Daten von Langzeitbeobachtungen in zwei Gebieten des englischen Tieflands, um die Beziehungen zwischen der Nähe zu Fasanen-Auswilderungsvolieren und Rebhuhn-Populationsparametern zu untersuchen. 1. In einem Untersuchungsgebiet von 20 km2 Grö\e ergab sich bei einer Beobachtungsdauer von 18 Jahren eine Beziehung zwischen dem Abstand von den Auswilderungsvolieren und dem Verhältnis von jungen zu alten Rebhühnern. Dieser Effekt war jedoch vermutlich ein Effekt der Lebensraum-Gliederung, da die für Rebhühner am besten geeigneten Habitate von den Volieren entfernt lagen, während sich von den Rebhühnern weniger präferierte Habitate in der Nähe der Volieren befanden. 2. In dem anderen Untersuchungsgebiet von 62 km2 Grö\e, für das Daten aus 33 Jahren vorlagen, fanden wir keine Auswirkungen der Nähe zu den Auswilderungsvolieren auf Dichte, Fruchtbarkeit und Überlebensrate der Rebhühner. Es fand sich somit kein überzeugender Beleg für einen Effekt des Abstandes zu den Auswilderungsvolieren der Fasanen. |
| Starting Page | 354 |
| Ending Page | 363 |
| Page Count | 10 |
| File Format | |
| ISSN | 00442887 |
| Journal | European Journal of Wildlife Research |
| Volume Number | 48 |
| Issue Number | 1 |
| e-ISSN | 14390574 |
| Language | German |
| Publisher | Springer-Verlag |
| Publisher Date | 2002-01-01 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Parasitenvermittelte Konkurrenz Rebhuhn-Rückgang Intensivierung der Landwirtschaft Heterakis gallinarum Animal Ecology Zoology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Ecology Animal Science and Zoology |
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