Irrigation and land use drive ground arthropod community patterns in an urban desert
Irrigation and land use drive ground arthropod community patterns in an urban desert
复制标题
DOI：
10.1603/0046-225x(2006)35
复制
发表时间：
2006-12-01
影响因子：
1.7
通讯作者：
Faeth, Stanley H.
中科院分区：
文献类型：
--
作者：
Cook, William M.;Faeth, Stanley H.
据观察，城市化通过诸如生境的迁移和生境残余物的产生等机制影响节肢动物群落。然而，很少有研究已经进行，同时分析的范围内的人为的，残留的，和准自然的土地利用在一个城市作为节肢动物的潜在栖息地。在这里，我们报告了对亚利桑那州凤凰城地面节肢动物进行的> 2年的长期研究，重点是聚集在农田、商业用地、中旱生住宅区、城市周围的沙漠遗迹和外围自然沙漠中的群落。农田和中型住宅庭院一般支持最大数量的个人和类群，表现出最好的分离，从其他类型的排序分析，和坏的最大数量的指示种分析的显着相关类群。因此，在大多数社区措施中，城市生境中两种灌溉量大、生产力高的土地利用类型似乎与其他类型不同。偏远的沙漠站点也支持显着相关的类群，包括那些不经常在沙漠公园和较高的营养水平在城市中不常见的成员。尽管如此，偏远的沙漠和沙漠公园支持类似的类群丰富度。干燥的住宅庭院和商业用地不支持任何分类群没有发现在其他土地利用类型。虽然我们的研究结果可能取决于凤凰城在水资源有限的索诺兰沙漠中的位置，但我们敦促更广泛地考虑高度改造的城市景观作为野生动物栖息地。
Urbanization has been observed to affect arthropod communities through mechanisms such as removal of habitat and creation of habitat remnants. However, very little research has been conducted that simultaneously analyzes the range of anthropogenic, remnant, and quasi-natural land uses in a city as potential habitat for arthropods. Here we report on > 2 yr of a long-term study of ground arthropods of Phoenix, AZ, focusing on the communities assembled in agricultural fields, commercial sites, mesic and xeric residential yards, desert remnants surrounded by the city, and peripheral natural desert. Agricultural fields and mesic residential yards generally supported the greatest number of individuals and taxa, showed the best separation from other types in ordination analyses, and bad the greatest number of significantly associated taxa in indicator species analysis. Thus, of the urban habitats, two heavily irrigated and highly productive land use types seem to stand apart from the others in most community measures. Outlying desert sites also supported significantly associated taxa, including those not found regularly in desert parks and members of higher trophic levels less common in the city. Despite this, outlying desert and desert parks supported similar taxon richness. Xeric residential yards and commercial sites did not support any taxa not found in other land use types. While our results may be dependent on the location of Phoenix in the water-limited Sonoran Desert, we urge broader consideration of highly modified urban landscapes as wildlife habitat.