Detecting Insect Pollinator Declines on Regional and Global Scales

作者：Lebuhn Gretchen^*; Droege Sam; Connor Edward F; Gemmill Herren Barbara; Potts Simon G; Minckley Robert L; Griswold Terry; Jean Robert; Kula Emanuel; Roubik David W; Cane Jim; Wright Karen W; Frankie Gordon; Parker Frank

来源：Conservation Biology, 2013, 27(1): 113-120.

DOI：10.1111/j.1523-1739.2012.01962.x

• Apiformes
• Apoidea
• bees
• monitoring
• power analysis

Recently there has been considerable concern about declines in bee communities in agricultural and natural habitats. The value of pollination to agriculture, provided primarily by bees, is %26gt;$200 billion/year worldwide, and in natural ecosystems it is thought to be even greater. However, no monitoring program exists to accurately detect declines in abundance of insect pollinators; thus, it is difficult to quantify the status of bee communities or estimate the extent of declines. We used data from 11 multiyear studies of bee communities to devise a program to monitor pollinators at regional, national, or international scales. In these studies, 7 different methods for sampling bees were used and bees were sampled on 3 different continents. We estimated that a monitoring program with 200250 sampling locations each sampled twice over 5 years would provide sufficient power to detect small (25%) annual declines in the number of species and in total abundance and would cost U.S.$2,000,000. To detect declines as small as 1% annually over the same period would require %26gt;300 sampling locations. Given the role of pollinators in food security and ecosystem function, we recommend establishment of integrated regional and international monitoring programs to detect changes in pollinator communities.

• 出版日期2013-2