02844nas a2200229   4500008004100000245011900041210006900160300001100229490000700240520205900247653001702306653002802323653002802351653004402379653002102423653002302444653002302467100001602490700001702506700002102523856007002544       2012                        eng d00aEffects of rangeland management on the site occupancy dynamics of prairie-chickens in a protected prairie preserve0 aEffects of rangeland management on the site occupancy dynamics o  a38 -470 v763 a<p>We investigated the site occupancy dynamics of greater prairie-chickens at Konza Prairie Biological Station, a protected site in northeastern Kansas that is managed for ecological research. We surveyed the site during mid-Mar to mid-May, 1981&ndash;2008, and recorded detections of birds in a grid of 6.3&thinsp;ha survey plots (n&thinsp;=&thinsp;187 plots). We used multiseason occupancy models to estimate the probabilities of occupancy (ψ) and detection (p), and tested whether land cover in woody vegetation, and land use with prescribed fire or grazing management influenced the dynamic processes of site colonization and local extinction. Probability of detection per site was consistently &lt;1 and varied among years (p&thinsp;=&thinsp;0.12&ndash;0.82). Site occupancy of prairie-chickens declined 40% over the study period from a high of ψ&thinsp;=&thinsp;0.19&thinsp;&plusmn;&thinsp;0.02&thinsp;SE in 1981 to a low of 0.11&thinsp;&plusmn;&thinsp;0.03 in 2008, despite protection from disturbance at leks and losses to harvest. We found that different sets of environmental factors impacted the probabilities of colonization and local extinction. Probability of colonization for an unoccupied site was negatively associated with the proportion of site occupied by woodland cover (β&thinsp;=&thinsp;&minus;1.25), and was lower for grazed sites (β&thinsp;=&thinsp;&minus;0.62). In contrast, probability of local extinction was affected by a weak interaction between grazing and average frequency of prescribed fire (β&thinsp;=&thinsp;&minus;1.01), but model-averaged slope coefficients were not statistically different than 0. To conserve prairie-chickens, we recommend prairies be managed with combinations of prescribed fire and grazing that maintain a heterogeneous mosaic of prairie habitats, while preventing woody encroachment. To assess biotic responses to land management practices, field sampling should be based on occupancy models or similar techniques that account for imperfect detection. &copy; 2011 The Wildlife Society.</p>10acolonization10adetection probabilities10agreater prairie-chicken10aKansas;Konza Prairie Biological Station10alocal extinction10aoccupancy modeling10aTympanuchus cupido1 aMcNew, L.B.1 aPrebyl, T.J.1 aSandercock, B.K.  uhttps://wildlife.onlinelibrary.wiley.com/doi/abs/10.1002/jwmg.23700538nas a2200157   4500008004100000245007000041210006900111300001100180490000700191100001800198700001600216700001700232700002100249700001700270856009300287       2011                        eng d00aHierarchical modeling of lek habitats of Greater Prairie-Chickens0 aHierarchical modeling of lek habitats of Greater PrairieChickens  a21 -320 v391 aGregory, A.J.1 aMcNew, L.B.1 aPrebyl, T.J.1 aSandercock, B.K.1 aWisely, S.M.  uhttps://www.fws.gov/southwest/es/documents/R2ES/LitCited/LPC_2012/Gregory_et_al_2011.pdf02369nas a2200301   4500008004100000245009400041210006900135300001300204490000700217520150300224653001901727653002301746653002101769653001801790100001501808700001701823700001601840700001401856700002301870700001701893700001401910700001301924700001801937700001401955700001701969700001501986856006602001       2011                        eng d00aLand fragmentation under rapid urbanization: A cross-site analysis of Southwestern cities0 aLand fragmentation under rapid urbanization A crosssite analysis  a429 -4550 v143 a<p>Explosive population growth and increasing demand for rural homes and lifestyles fueled exurbanization and urbanization in the western USA over the past decades. Using National Land Cover Data we analyzed land fragmentation trends from 1992 to 2001 in five southwestern cities associated with Long Term Ecological Research (LTER) sites. We observed two general fragmentation trends: expansion of the urbanized area leading to fragmentation in the exurban and peri-urban regions and decreased fragmentation associated with infill in the previously developed urban areas. We identified three fragmentation patterns, riparian, polycentric, and monocentric, that reflect the recent western experience with growth and urbanization. From the literature and local expert opinion, we identified five relevant drivers &ndash; water provisioning, population dynamics, transportation, topography, and institutions &ndash; that shape land use decision-making and fragmentation in the southwest. In order to assess the relative importance of each driver on urbanization, we linked historical site-specific driver information obtained through literature reviews and archival analyses to the observed fragmentation patterns. Our work highlights the importance of understanding land use decision-making drivers in concert and throughout time, as historic decisions leave legacies on landscapes that continue to affect land form and function, a process often forgotten in a region and era of blinding change.</p>10aExurbanization10aLand fragmentation10aThe US Southwest10aUrban ecology1 aYork, A.M.1 aShrestha, M.1 aBoone, C.G.1 aZhang, S.1 aHarrington, J., A.1 aPrebyl, T.J.1 aSwann, A.1 aAgar, M.1 aAntolin, M.F.1 aNolen, B.1 aWright, J.B.1 aSkaggs, R.  uhttps://link.springer.com/article/10.1007%2Fs11252-011-0157-8