Inter-annual variation in avian phenology and reproductive success in a semiarid agricultural area of central Mexico

IF 2.6 3区 环境科学与生态学 Q2 ECOLOGY
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引用次数: 0

Abstract

Knowledge pertaining avian reproductive phenology and life history is important to understand population dynamics under current climate change. Understanding about changes that occur in these dynamics and factors influencing nesting success in modified habitats is also necessary. We studied reproductive phenology and nest characteristics of birds that nest in an agricultural area within an arid region of central Mexico, and evaluated changes in survival and nesting initiation throughout three years having variation in weather patterns. We registered more nests and greater avian reproductive success in years having the highest rainfall. Within years, nest survival increased as nest age advanced and with increasing nest height in some species. We observed lower incidence of nest parasitism in the agroecosystem in relation to those reported for less modified habitats in semiarid environments. We also observed cases of ectoparasitism by dipteran larvae in chicks of two bird species.

墨西哥中部半干旱农业区鸟类物候和繁殖成功率的年际变化
有关鸟类繁殖物候学和生活史的知识对于了解当前气候变化下的种群动态非常重要。了解这些动态变化以及在改变的栖息地中影响筑巢成功率的因素也很有必要。我们研究了在墨西哥中部干旱地区的农业区筑巢的鸟类的生殖物候学和巢的特征,并评估了在天气模式变化的三年中存活率和筑巢开始时间的变化。我们发现,在降雨量最高的年份,鸟巢数量更多,鸟类的繁殖成功率更高。在这些年中,巢的存活率随着巢龄的增加而提高,某些物种的巢也随着巢高度的增加而提高。我们观察到,农业生态系统中鸟巢寄生虫的发生率低于半干旱环境中变化较小的栖息地。我们还观察到两种鸟类的雏鸟受到双翅目幼虫的体外寄生。
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来源期刊
Journal of Arid Environments
Journal of Arid Environments 环境科学-环境科学
CiteScore
5.70
自引率
3.70%
发文量
144
审稿时长
55 days
期刊介绍: The Journal of Arid Environments is an international journal publishing original scientific and technical research articles on physical, biological and cultural aspects of arid, semi-arid, and desert environments. As a forum of multi-disciplinary and interdisciplinary dialogue it addresses research on all aspects of arid environments and their past, present and future use.
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