波兰中部农业景观中寄生猛禽营养生态位的比较

IF 0.4 4区 环境科学与生态学 Q4 ECOLOGY
J. Romanowski, G. Lesiński
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引用次数: 2

摘要

根据生态学的基本原理,共享同一生态位的物种不会长期占据同一环境,两个或两个以上物种的共生关系为分析其营养生态位分化提供了一个有趣的领域。为了研究营养生态位维度的潜在差异,我们研究了三种同域鸟类捕食者的饮食,这些捕食者以殖民地的田鼠为食。研究区位于波兰中部的农业景观中,由农田、草地和牧场组成,位于一个小河谷内。长耳猫头鹰(Asio otus)、仓鸮(Tyto alba)和红隼(Falco tinunculus)的颗粒是在2016年和2017年春季从包括教堂建筑及其周围的750平方米的研究地点收集的。颗粒分析提供了4128只脊椎动物猎物个体的数据(谷仓猫头鹰1914只,长耳猫头鹰1749只,红隼465只)。三种捕食者最重要的猎物群体是小型哺乳动物(90%,14种),最常被捕食的物种是土拨鼠(占长耳猫头鹰捕获的脊椎动物的72%,红隼的59%和仓鸮的53%)。尽管在食物组成上大体相似,但在一些猎物种类(如Soricomorpha、M. arvalis、musculus、Rattus norvegicus和Apodemus spp)的贡献和捕食者之间的饮食多样性方面存在差异。我们得出结论,所研究的同域物种的营养生态位在几个维度上存在差异,包括饮食活动,猎物大小和分类群特定的摄食偏好。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Comparing Trophic Niches of Sympatric Raptors in Agricultural Landscape in Central Poland
ABSTRACT According to basic ecological principle, species that share the same niche do not occupy the same environment for a long time, and sympatry of two or more such species provides an interesting field for the analysis of their trophic niche differentiation. To examine the potential differences in the dimensions of the trophic niche we studied the diet of three sympatric avian predators that prey on colonial Microtus rodents. The study area in central Poland is located in an agricultural landscape, composed of crop fields, as well as meadows and pastures located within a small river valley. The pellets of long-eared owl (Asio otus), barn owl (Tyto alba) and kestrel (Falco tinnunculus) were collected from the 750 m2 study site including church building and its surrounding in the spring of 2016 and 2017. The analysis of pellets provided data on a total of 4128 vertebrate prey individuals (1914 from barn owl, 1749 from long-eared owl, and 465 from kestrel). The most important prey group of all three predators were small mammals (90%, 14 species) and the most frequently preyed species was Microtus arvalis (making up 72% of vertebrate prey of long-eared owl, 59% of kestrel and 53% of barn owl). Despite the general similarity in the diet composition, there were differences in the contribution of several prey species (e.g. Soricomorpha, M. arvalis, Mus musculus, Rattus norvegicus, and Apodemus spp.) and the diversity of the diet between the predators. We conclude that the trophic niches of the studied sympatric species differ in several dimensions, including diel activity, prey size and taxon-specific feeding preferences.
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来源期刊
Polish Journal of Ecology
Polish Journal of Ecology 环境科学-生态学
CiteScore
1.10
自引率
0.00%
发文量
9
审稿时长
18-36 weeks
期刊介绍: POLISH JOURNAL OF ECOLOGY (formerly Ekologia polska) publishes original scientific research papers dealing with all aspects of ecology: both fundamental and applied, physiological ecology, evolutionary ecology, ecology of population, community, ecosystem, landscape as well as global ecology. There is no bias regarding taxons, ecosystems or geographical regions.
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