Department of Biology, UMC 5305, Utah State University, Logan, Utah, 84322, USA.
Department of Wildlife Ecology and Conservation, University of Florida, 110 Newins Ziegler Hall, PO Box 110430, Gainesville, Florida, 32611, USA.
Ecology. 2016 Apr;97(4):1082. doi: 10.1890/15-2115.1.
Desert ecosystems have long served as model systems in the study of ecological concepts (e.g., competition, resource pulses, top-down/bottom-up dynamics). However, the inherent variability of resource availability in deserts, and hence consumer dynamics, can also make them challenging ecosystems to understand. Study of a Chihuahuan desert ecosystem near Portal, Arizona began in 1977. At this site, 24 experimental plots were established and divided among controls and experimental manipulations. Experimental manipulations over the years include removal of all or some rodent species, all or some ants, seed additions, and various alterations of the annual plant community. This dataset includes data previously available through an older data publication and adds 11 years of data. It also includes additional ant and weather data not previously available. These data have been used in a variety of publications documenting the effects of the experimental manipulations as well as the response of populations and communities to long-term changes in climate and habitat. Sampling is ongoing and additional data will be published in the future.
荒漠生态系统长期以来一直是生态概念研究的模式系统（例如，竞争、资源脉冲、自上而下/自下而上的动态）。然而，沙漠中资源可用性的固有可变性，以及因此而产生的消费者动态，也使得它们成为难以理解的生态系统。对亚利桑那州门户附近的一个奇瓦瓦沙漠生态系统的研究始于 1977 年。在这个地点，设立了 24 个实验地块，并分为对照组和实验组。多年来的实验处理包括去除所有或某些啮齿动物物种、所有或某些蚂蚁、种子添加以及对一年生植物群落的各种改变。该数据集包括以前通过旧的数据出版物提供的数据，并增加了 11 年的数据。它还包括以前不可用的额外蚂蚁和天气数据。这些数据已被用于各种出版物，记录实验处理的影响，以及种群和群落对气候和栖息地长期变化的反应。采样仍在进行中，未来将发布更多数据。
