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首页> 外文期刊>Canadian Journal of Zoology >Ecological correlates of roe deer fawn survival in a sub-Mediterranean population
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Ecological correlates of roe deer fawn survival in a sub-Mediterranean population

机译：地中海次种群population小鹿存活的生态相关性

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摘要

We investigated the effect of body mass, spring and summer total rainfall, birth period, and local population density on the survival of 130 roe deer (Capreolus capreolus (L., 1758)) fawns captured over seven fawning seasons (1997-2003) and radio-monitored daily. We modelled survival using the program MARK, incorporating biological questions into different models, following a priori hypotheses. The best model was selected using Akaike's information criterion. The population was surveyed by counts andestimates were obtained using mark-resight methods. Weekly survival of roe deer fawns exhibits a pseudo-threshold time trend. Probability of survival is low (0.33 +- 0.0046) in summer, increases (0.79 +- 0.0021) in fall, and approaches the highest valuetypical of adult survival (0.90 +- 0.00091 and 0.96+- 0.00021 by the end of March and May, respectively) during early spring following birth. The final model predicts that survival of roe deer fawns is positively affected by total precipitation in spring and body mass under a pseudo-threshold time variation pattern. In contrast with other studies, we did not detect any effect of population density on survival of fawns. This study contributes to the scarce knowledge about the performance of roe deer populations in Mediterranean ecosystems, providing evidence that climate variables and individual characteristics shape the vital rates of roe deer populations.
机译：我们调查了体重，春季和夏季的总降雨量，出生期和当地人口密度对在七个淡化季节（1997-2003年）捕获的130头小鹿（Capreolus capreolus（L.，1758））小鹿生存的影响，并每天进行无线电监控。根据先验假设，我们使用MARK程序对生存进行了建模，将生物学问题整合到了不同的模型中。使用Akaike的信息准则选择了最佳模型。通过计数对人口进行调查，并使用标记审查方法获得估计数。 e小鹿的每周生存期呈假阈值时间趋势。夏季生存率低（0.33 +-0.0046），秋季生存率增加（0.79 +-0.0021），并在三月和五月底达到成人生存的最高典型值（0.90 +-0.00091和0.96 +-0.00021），分别在出生后的早春期间。最终模型预测，在假阈值时间变化模式下，春季总降水量和体重会积极影响ro的生存。与其他研究相比，我们没有发现种群密度对小鹿存活的任何影响。这项研究有助于了解有关地中海生态系统中de种群的稀缺知识，并提供证据表明气候变量和个体特征决定了population种群的生命率。

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