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Birds are one of the most diverse groups of ecosystem service providers, whose ecological functions range from creating soil to shaping primate behavior, Nevertheless, the impression that birds have little influence on ecological processes has been hard to change. Given the ongoing declines in avian functional groups, there is a pressing need to compare(More)
THE REPORT BY T. SEARCHINGER ET AL. (“Use of U.S. croplands for biofuels increases greenhouse gases through emissions from land-use change,” 29 February, p. 1238) provides one scenario for the conversion from a fossil-based energy economy to a biobased, renewable-energy economy. However, Searchinger et al. failed to include several important considerations.(More)
In our increasingly technological society, people give little thought to how dependent they are on the proper functioning of ecosystems and the crucial services for humanity that flow from them. Ecosystem services are " the conditions and processes through which natural ecosystems, and the species that make them up, sustain and fulfill human life " (Daily(More)
The extent to which species' ecological and phylogenetic relatedness shape their co-occurrence patterns at large spatial scales remains poorly understood. By quantifying phylogenetic assemblage structure within geographic ranges of >8000 bird species, we show that global co-occurrence patterns are linked - after accounting for regional effects - to key(More)
Response ROBINSON AND BAUMGARTNER REFERENCE recent studies showing that when individuals living in poverty receive new products such as bednets or water purifi ers at no cost, their use patterns are similar to those who have purchased the same products (1, 2). Robinson and Baumgartner suggest that the same may be true for cookstoves. We agree that,(More)
THE NEWS & ANALYSIS STORIES “FRAGILE WETLAND WILL TEST TURKEY’S RESOLVE IN PROTECTING biodiversity” and “For scientists, protests morph into fi ght for academic freedom” (J. Bohannon, 26 July, p. 332) deserve to be set in a wider context. Turkey is covered by three global biodiversity hot spots and has 3000 endemic plant species and nearly 100 endemic(More)
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