The effect of environmental factors on survival of grey partridge (Perdix perdix) chicks in Poland during 1987-89
In: Journal of applied ecology, Jg. 29 (1992), Heft 3, S. 745-750
Online
academicJournal
- print, 21 ref
Zugriff:
1. The survival of grey partridge chicks was estimated from the brood sizes in several areas of Poland, and related to weather conditions, abundance of insect food, occurrence of weeds, and the use of herbicides. 2. Geometric mean brood size in different areas and years ranged from 7-5 to 11.2, with a mean of 9.3, and the estimated chick survival rate ranged from 42 to 71%, with a mean of 56%. 3. Chick survival rates increased with mean temperatures and decreased with increasing numbers of rainy days in June. 4. Chick survival rates increased with numbers of plant bugs, but they had no significant effect after removal of the effect of weather. Numbers of plant bugs increased with temperature.
Titel: |
The effect of environmental factors on survival of grey partridge (Perdix perdix) chicks in Poland during 1987-89
|
---|---|
Autor/in / Beteiligte Person: | PANEK, M |
Link: | |
Zeitschrift: | Journal of applied ecology, Jg. 29 (1992), Heft 3, S. 745-750 |
Veröffentlichung: | Oxford: Blackwell Science, 1992 |
Medientyp: | academicJournal |
Umfang: | print, 21 ref |
ISSN: | 0021-8901 (print) |
Schlagwort: |
|
Sonstiges: |
|