SummaryFarmland birds represent a large proportion of European avifauna, and the populations of several species have suffered a dramatic decline in recent decades. Among these species, the European Turtle Dove Streptopelia turtur has undergone rapid decline in much of its European range. Therefore, the main aims of this research are to estimate the population density of the Turtle Dove and to investigate its habitat use at home range scale in an intensively cultivated agroecosystem in northern Italy. In the 2015 breeding season we carried out turtle dove counts from 372 point-counts, randomly allocated following a stratified cluster sampling design. The density was estimated by distance sampling, whereas the habitat suitability was assessed by Resource Selection Probability Function. In particular, we followed a presence vs availability approach, using binary logistic regression and the Information-Theoretic approach. During fieldwork, 76 observations of Turtle Dove were collected and a density of 5.0 pairs/km2 was estimated. The Turtle Dove inhabits areas with high tree cover, either semi-natural forests or tree plantations, as well as areas with many shrubs and hedgerows. On the other hand, areas with a high proportion of crops, such as paddyfields, maize, and winter cereals are avoided. For the species’ conservation, it is necessary to maintain a combination of habitat features with suitable nesting and feeding areas, as the degradation of either of these may reduce Turtle Dove populations.

中文翻译：

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在集约化耕作的农业生态系统中，河岸森林和人工林对欧洲斑鸠 Streptopelia turtur 发生的重要性

摘要农田鸟类在欧洲鸟类中占很大比例，近几十年来，几个物种的种群数量急剧下降。在这些物种中，欧洲斑鸠链球菌在其大部分欧洲范围内经历了快速下降。因此，本研究的主要目的是估计斑鸠的种群密度，并调查其在意大利北部集约化耕作的农业生态系统中在家庭范围内的栖息地利用情况。在 2015 年的繁殖季节，我们根据分层整群抽样设计随机分配了 372 个点的斑鸠计数。密度通过距离采样估计，而栖息地适宜性通过资源选择概率函数评估。特别是，我们跟踪了一个存在对比可用性方法，使用二元逻辑回归和信息论方法。田野调查期间，共收集到 76 对斑鸠的观测数据，密度为 5.0 对/km2估计。斑鸠栖息在树木覆盖率高的地区，无论是半天然森林还是人工林，以及有许多灌木和树篱的地区。另一方面，避免种植农作物的地区，如稻田、玉米和冬季谷物。对于物种的保护，有必要保持栖息地特征与合适的筑巢和觅食区的结合，因为其中任何一个的退化都可能减少斑鸠的数量。