Termite casing data from the long-term Small Mammal Exclosure Study (SMES) at Jornada Basin LTER, 1995-2005

This data package contains termite activity data in plots with a range of herbivore exclusion treatments on Jornada Experimental Range (JER) and Chihuahuan Desert Rangeland Research Center (CDRRC) lands. Study sites were established in 1995; one in black grama grassland and the other in creosotebush shrubland to compare the impact of herbivores on ecosystem processes between these vegetation types. Parallel studies were established at the Sevilleta LTER site (New Mexico, USA) and Mapimi Biosphere Reserve (Durango, Mexico). Each study site is 1 km by 0.5 km in area. Four replicate experimental blocks were randomly located at each study site to measure vegetation responses using exclusion treatments including a) all mammalian herbivores, including cattle, lagomorphs, and rodents, b) lagomorphs and cattle only, c) cattle only, and d) control accessible to all herbivores. Thirty-six sampling points were positioned at 5.8-meter intervals on a systematically located 6 by 6 point grid within each plot. A permanent one-meter by one-meter vegetation measurement quadrat is located at each of the 36 points. Each spring and fall from 1995-2005, a tape measure was used to measure the length, diameter, and height in centimeters of each termite casing in these vegetation quadrats. This study is complete. Resources in this dataset:Resource Title: Website Pointer to html file. File Name: Web Page, url: https://portal.edirepository.org/nis/mapbrowse?scope=knb-lter-jrn&identifier=210086008 Webpage with information and links to data files for download

本数据集包含了在 Jornada 实验站（JER）和奇瓦瓦沙漠放牧地研究中心（CDRRC）土地上进行的白蚁活动数据，其中涵盖了不同草食性动物排斥处理的图块。研究站点自1995年设立，分别位于黑格兰马草地和松脂灌木丛草地，以比较草食性动物对这两种植被类型生态系统过程的影响。在塞维利亚 LTER 站点（美国新墨西哥州）和 Mapimi 生物圈保护区（墨西哥杜兰戈州）也设立了并行研究。每个研究站点的面积为1公里乘以0.5公里。在每个研究站点随机布置了四个重复实验区，以使用包括以下排斥处理在内的植被响应测量：a) 所有哺乳动物草食性动物，包括牛、兔形目动物和啮齿动物，b) 仅兔形目动物和牛，c) 仅牛，以及d) 可供所有草食性动物访问的控制区。在每个图块中，按照6乘以6的点网格系统，以5.8米的间隔定位了36个采样点。在每个采样点处，放置了一个永久性的1米乘以1米的植被测量样方。从1995年到2005年的每个春季和秋季，使用卷尺测量了这些植被样方中每个白蚁蛹壳的长度、直径和高度，单位为厘米。本研究已全部完成。本数据集中的资源包括：资源标题：指向 html 文件的网页指针。文件名称：网页，url：https://portal.edirepository.org/nis/mapbrowse?scope=knb-lter-jrn&identifier=210086008，网页中包含信息及数据文件的下载链接。