Oecologia.
Publisher:
Springer.
Frequency: Twelve no. a year
Country: Germany
Language: ger
Author(s):
International Association for Ecology.
Start Year:1968 -
ISSN:
0029-8549 (Print)
1432-1939 (Electronic)
0029-8549 (Linking)
1432-1939 (Electronic)
0029-8549 (Linking)
Impact Factor
2.7
2022
| NLM ID: | 0150372 |
| (DNLM): | O03120000(s) |
| (OCoLC): | 01353676 |
| Coden: | OECOBX |
| Classification: | W1 OE28 |
Age-specific effects of density and weather on body condition and birth rates in a large herbivore, the Przewalski’s horse. Reproduction in young females can show a particularly sensitive response to environmental challenges, although empirical support from individual-based long-term studies is scarce. Based on a 20-year data set from a free-roaming Przewalski's horse population (Equus ferus przewalskii), we studied effects of large-herbivore density (horses + cattle) and weather conditions experienced during different life stages on females' annual birth rates. Foaling probability was very low in 2-year-olds, reaching maximum values in 5 to 10-year-olds, followed by a decrease in older females indicating repro...
Early predictors of female lifetime reproductive success in a solitary hibernator: evidence for “silver spoon” effect. Fitness consequences of early-life conditions remain unclear and poorly studied in mammals. Based on long-term observations of yellow ground squirrels (Spermophilus fulvus), we identified early determinants of female fitness by analyzing the effects of early-life individual and environmental characteristics (weaning weight, weight gain rate, date of natal emergence, natal litter size, location of the natal burrow, local density of juveniles, population density and precipitation in the post-weaning period) on lifetime reproductive success (LRS). We found high variation and right-skewed distribu...
Turnover of carbon isotopes in tail hair and breath CO2 of horses fed an isotopically varied diet. Temporal stable isotope records derived from animal tissues are increasingly studied to determine dietary and climatic histories. Despite this, the turnover times governing rates of isotope equilibration in specific tissues following a dietary isotope change are poorly known. The dietary isotope changes recorded in the hair and blood bicarbonate of two adult horses in this study are found to be successfully described by a model having three exponential isotope pools. For horse tail hair, the carbon isotope response observed following a dietary change from a C3 to a C4 grass was consistent with...