Diversity and abundance of birds at TERENO sites (2009): Friedeburg, Greifenhagen, Schafstaedt, Wanzleben

The data are gathered within the TERENO (Terrestrial Environmental Observatories) long-term research programme involving several Helmholtz Association Centers in Germany (www.tereno.net).  TERENO aims to catalogue the longterm ecological, social and economic impact of global change at regional and landscape level. The biodiversity part of TERENO deals with monitoring and research on different organism groups: (1) Vascular plants (primary producers, overall biodiversity indicators), (2) Bees and Hoverflies (important pollinators; ecosystem service agents), (3) Butterflies (indicators for habitat quality, pollinators), (4) Birds (highly mobile, sensitive to landscape context, integrative at landscape scale).This dataset covers bird count data of 4x4 km landscapes in Saxony-Anhalt (Germany) dominated by agricultural use. All singing, calling and seen birds were registered according to the point counts method described by Bibby et al. (1992): Bird census techniques, Academic press, London.

本数据集依托德国亥姆霍兹联合会（Helmholtz Association）多家研究中心参与的TERENO（陆地环境观测站，Terrestrial Environmental Observatories）长期研究计划采集所得，该计划官方网站为www.tereno.net。TERENO的核心目标是在区域与景观尺度上，系统记录全球变化引发的长期生态、社会与经济影响。TERENO的生物多样性研究分支聚焦于多类生物类群的监测与研究：(1) 维管植物（Vascular plants）——初级生产者，整体生物多样性指示物；(2) 蜜蜂与食蚜蝇（Bees and Hoverflies）——重要传粉者与生态服务介导者；(3) 蝴蝶（Butterflies）——栖息地质量指示物与传粉者；(4) 鸟类（Birds）——移动性强、对景观背景敏感且可在景观尺度实现整合监测的类群。本数据集涵盖德国萨克森-安哈尔特州（Saxony-Anhalt）以农业利用为主的4×4平方千米景观内的鸟类计数数据。所有鸣唱、鸣叫及被观测到的鸟类均按照Bibby等人1992年出版的《鸟类普查技术》（*Bird census techniques*，伦敦学术出版社（Academic press））中描述的点计数法（point counts method）完成记录。