caa a22 4500 469074760 CHVBK 20180323132932.0 cr unu---uuuuu 170328e19921201xx s 000 0 eng 10.1007/BF00131255 doi (NATIONALLICENCE)springer-10.1007/BF00131255 Disturbances in tallgrass prairie: local and regional effects on community heterogeneity [Elektronische Daten] [Susan Glenn, Scott Collins, David Gibson] Community heterogeneity in tallgrass prairie was analyzed at regional and local levels to assess the effects of disturbances on community structure at different spatial scales. The sites were part of NASA's First ISLSCP Field Experiment (FIFE) in Kansas, and were located on grassland treatments that were undisturbed, and burned-only on Konze Prairie Research Natural Area, and grazed-only and grazed + burned on adjacent ranch land. Sites in grazed-only or grazed + burned treatments were less similar to each other, on a regional scale (15 × 15 km), than were burned-only or undisturbed sites. Grazing reduced the cover of dominant species, making space available for the establishment of immigrants from the region. Each site was different because of establishment by different species from the large regional species pool. At the local scale (0.1 ha), the most homogeneous treatments were those that were most heterogeneous at the regional scale. Undisturbed treatments at the local scale were the most heterogeneous compared to sites under other treatments. Therefore, regional responses to disturbances were more variable than local responses, and were not predictable from within-site analyses. SPB Academic Publishing bv, 1992 Hierarchy nationallicence scale nationallicence disturbance nationallicence heterogeneity nationallicence tallgrass prairie nationallicence plant communities nationallicence Glenn Susan Oklahoma Biological Survey, University of Oklahoma, 73019-0543, Norman, OK, USA aut Collins Scott Department of Botany and Microbiology, University of Oklahoma, 73019, Norman, OK, USA aut Gibson David Department of Biology, University of West Florida, 32514, Pensacola, FL, USA aut Landscape Ecology Kluwer Academic Publishers 7/4(1992-12-01), 243-251 0921-2973 7:4<243 1992 7 10980 https://doi.org/10.1007/BF00131255 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00131255 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Glenn Susan Oklahoma Biological Survey, University of Oklahoma, 73019-0543, Norman, OK, USA aut NATIONALLICENCE 700 1- Collins Scott Department of Botany and Microbiology, University of Oklahoma, 73019, Norman, OK, USA aut NATIONALLICENCE 700 1- Gibson David Department of Biology, University of West Florida, 32514, Pensacola, FL, USA aut NATIONALLICENCE 773 0- Landscape Ecology Kluwer Academic Publishers 7/4(1992-12-01), 243-251 0921-2973 7:4<243 1992 7 10980 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer