<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Presley, S. J.</style></author><author><style face="normal" font="default" size="100%">Willig, M. R.</style></author><author><style face="normal" font="default" size="100%">Bloch, C. P.</style></author><author><style face="normal" font="default" size="100%">Castro-Arellano, I.</style></author><author><style face="normal" font="default" size="100%">Higgins, C.</style></author><author><style face="normal" font="default" size="100%">Klingbeil, B. T.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A complex metacommunity structure for gastropods along an elevational gradient</style></title><secondary-title><style face="normal" font="default" size="100%">Biotropica</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">LUQ</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2011</style></year></dates><pages><style face="normal" font="default" size="100%">DOI: 10.1111/j.1744-7429.2010.00727.x.</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The metacommunity framework integrates species-specific responses to environmental gradients to detect emergent patterns of mesoscale organization. Abiotic characteristics (temperature, precipitation) and associated vegetation types change with elevation in a predictable fashion, providing opportunities to decouple effects of environmental gradients per se from those of biogeographical or historical origin. Moreover, expected structure is different if a metacommunity along an elevational gradient is molded by idiosyncratic responses to abiotic variables (expectation = Gleasonian structure) than if such a metacommunity is molded by strong habitat preferences or specializations (expectation = Clementsian structure). We evaluated metacommunity structure for 13 species of gastropod from 15 sites along an elevationaltransect in the Luquillo Experimental Forest of Puerto Rico. Analyses were conducted separately for the primary axis and for the secondary axis of correspondence extracted via reciprocal averaging. The metacommunity exhibited quasi-Clementsian structure along the primary axis, which represented a gradient of gastropod species specialization that was unassociated with elevation. The secondary axis represented environmental variation associated with elevation. Along this axis, the metacommunity exhibited Clementsian structure, with specialists characterizing each of three suites of sites that corresponded to three distinct forest types. These forest types are associated with low (tabonuco forest), mid- (palo colorado forest), or high (elfin forest) elevations. Thus, variation among sites in species composition reflected two independent processes: the first decoupled from elevational variation and its environmental correlates, and the second highly associated with environmental variation correlated with elevation.Abstract in Spanish is available at http://www.blackwell-synergy.com/loi/btp</style></abstract><accession-num><style face="normal" font="default" size="100%">LTER.2011-86521</style></accession-num></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Willig, M. R.</style></author><author><style face="normal" font="default" size="100%">Presley, S. J.</style></author><author><style face="normal" font="default" size="100%">Bloch, C. P.</style></author><author><style face="normal" font="default" size="100%">Castro-Arellano, I.</style></author><author><style face="normal" font="default" size="100%">Cisneros, L.M.</style></author><author><style face="normal" font="default" size="100%">Higgins, C. L.</style></author><author><style face="normal" font="default" size="100%">Klingbeil, B. T.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Tropical metacommunities and elevational gradients: disentangling effects of forest type from other elevational factors.</style></title><secondary-title><style face="normal" font="default" size="100%">Oikos</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">LUQ</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2011</style></year></dates><pages><style face="normal" font="default" size="100%">DOI: 10.1111/j.1600-0706.2011.19218.x.</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Elevational gradients provide a natural experiment for assessing the extent to which the structure of animal metacommunities is molded by biotic and abiotic characteristics that change gradually, or is molded by aspects of plant community composition and physiognomy that change in a more discrete fashion. We used a metacommunity framework to integrate species-specific responses to environmental gradients as an approach to detect emergent patterns at the mesoscale in the Luquillo Mountains of Puerto Rico. Elements of metacommunity structure (coherence, species turnover and range boundary clumping) formed the basis for distinguishing among random, checkerboard, Gleasonian, Clementsian, evenly spaced and nested patterns. Paired elevational transects (300–1000 m a.s.l.) were sampled at 50 m intervals to decoupleunderlying environmental mechanisms: a mixed forest transect reflected changes in abiotic and biotic conditions, including forest type (i.e. tabonuco, palo colorado and elfin forests), whereas another transect reflected changes in environmental conditions but not forest type, as its constituent plots were located within palm forest. Based on distributional data (presence versus absence of species), the mixed forest transect exhibited Clementsian structure, whereas the palm forest transect exhibited quasi-Gleasonian structure. In contrast, the distribution of modes in species abundance was random with respect to the latent environmental gradient in the mixed forest transect and clumped with respect to the latent environmental gradient in the palm forest transect. Such contrasts suggest that the environmental factors affecting abundance differed in form or type from those affecting distributional boundaries. Variation among elevational strata with respect to the first axis of correspondence from reciprocal averaging was highly correlated with elevation along each transect, eventhough axis scores were not correlated between mixed forest and palm forest transects. This suggests that the identity of the environmental characteristics, or the form of response by the fauna to those characteristics, differed between the two elevational transects. Despite the proximity of the transects, the patchy configuration of palm forest, and the pervasive distribution of the dominant palm species, the relative importance of abiotic variables and habitat in structuring gastropod metacommunities differed between transects, which is remarkable and attests to the sensitivity of metacommunity structure to environmental variation.</style></abstract><accession-num><style face="normal" font="default" size="100%">LTER.2011-86530</style></accession-num></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Castro-Arellano, I.</style></author><author><style face="normal" font="default" size="100%">Presley, S. J.</style></author><author><style face="normal" font="default" size="100%">Saldanha, L.N.</style></author><author><style face="normal" font="default" size="100%">Willig, M. R.</style></author><author><style face="normal" font="default" size="100%">Wunderle, J.M.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Effects of reduced impact logging on bat biodiversity in terra firme forest of lowland Amazonia</style></title><secondary-title><style face="normal" font="default" size="100%">Biological Conservation</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">LUQ</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2007</style></year></dates><volume><style face="normal" font="default" size="100%">138</style></volume><pages><style face="normal" font="default" size="100%">269-285</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><accession-num><style face="normal" font="default" size="100%">LTER.2007-82646</style></accession-num></record></records></xml>