Point count bird censusing - long term study in central Arizona-Phoenix: Study sites

Project goal: To study the patterns in bird species diversity, abundance and distribution over time and space, and the processes behind these patterns as a result of urbanization. The ongoing project (since October 2000) is documenting the abundance and distribution of birds in four habitats (51 sites): Urban (18) Desert (15) Riparian (11) and agricultural (7). The 40 non-riparian sites are a subset of the CAP LTER Survey200 points. We are using point counts to survey birds four times a year (January, April, July and October). During each session each point is visited by three birders who count all birds seen or heard for 15 minutes. Our goal is to study how different land-use forms affect bird abundance, distribution and diversity in the greater Phoenix area in order to predict and preserve high bird species diversity as urban development is proceeding. This dataset documents only the spatial location of bird survey locations. For full project data, including results of bird surveys, and updated bird survey locations, please see: Bateman, Heather; Childers, Dan; Katti, Madhusudan; Shochat, Eyal; Warren, Paige (2016-12-16): Point-count bird censusing: long-term monitoring of bird abundance and diversity in central Arizona-Phoenix, ongoing since 2000. Long Term Ecological Research Network. http://dx.doi.org/10.6073/pasta/cc7181cd38ce3a19e32708caebdf13de项目目标：探究鸟类物种多样性、丰富度及时空分布模式，以及城市化进程下催生此类模式的内在机制。 本项目自2000年10月启动至今，持续记录四种生境（共51个样点）内的鸟类丰富度与分布：城市生境18个、荒漠生境15个、河岸生境11个及农业生境7个。其中40个非河岸样点取自CAP长期生态研究网络（CAP LTER）的200个样点调查子集。 本研究采用点计数法（point counts）每年开展四次鸟类调查，调查时段分别为1月、4月、7月与10月。每次调查中，3名观鸟者将到访每个样点，耗时15分钟记录所有可见或可闻的鸟类。 本项目的核心研究目标为：探究大凤凰城地区不同土地利用类型对鸟类丰富度、分布及多样性的影响，以期在城市开发推进过程中，实现对高鸟类物种多样性区域的预测与保护。 本数据集仅记录鸟类调查样点的空间位置。如需获取包含鸟类调查结果与更新后调查样点信息的完整项目数据，请参阅：Bateman, Heather; Childers, Dan; Katti, Madhusudan; Shochat, Eyal; Warren, Paige (2016-12-16): 点计数鸟类普查：2000年起持续开展的亚利桑那州中部-凤凰城地区鸟类丰富度与多样性长期监测。长期生态研究网络。http://dx.doi.org/10.6073/pasta/cc7181cd38ce3a19e32708caebdf13de