DOI URLīagchi S,Namgail T,Ritchie ME(2006).Small mammalian herbivores as mediators of plant community dynamics in the high-altitude arid rangelands of Trans-Himalaya.Biological Conservation,127, 438-442. DOI PMIDĪrchidona-Yuste A,Wiegand T,Castillo P,Navas-Cortés JA(2020).Spatial structure and soil properties shape local community structure of plant-parasitic nematodes in cultivated olive trees in southern Spain.Agriculture, Ecosystems & Environment,287, 106688. Table 2 Appearance site numbers of each species 物种 SpeciesĪnderson MJ,Crist TO,Chase JM,Vellend M,Inouye BD,Freestone AL,Sanders NJ,Cornell HV,Comita LS,Davies KF,Harrison SP,Kraft NJB,Stegen JC,Swenson NG(2011).Navigating the multiple meanings of β diversity: a roadmap for the practicing ecologist.Ecology Letters,14, 19-28. flore-minore with high SCBD should be protected to conserve plant diversity when the plateau pikas are present. These results indicate that alpine meadows distributed in high LCBD and Agropyron cristatum, Artemisia hedinii and Anemone rivularis var. LCBD of individual site was negetively related to species richness of that individual site, and had no significant correlation with the disturbed intensity of plateau pika. The disturbance plot T 0 with the absence of plateau pika had the greatest contribution to the β diversity of whole study region. flore-minore were the single-species plants that contributed the most to the β diversity of the study regions. Species with intermediate site occupancy had a greater contribution to β diversity, in which Agropyron cristatum, Artemisia hedinii and Anemone rivular var. Important findings The turnover rate of species in the plant community first increased and then decreased with the increase of the disturbance intensities induced by plateau pika. Then a variance decomposition was used to measure the contribution of individual species to overall β diversity (SCBD) and single interference sites to overall β diversity (LCBD) according presence- absence community matrix. Methods This study conducted a field survey at Gangcha County in the Qingzang Plateau to determine the effect of disturbance intensities of plateau pika ( Ochotona curzoniae) on the β diversity of an alpine meadow measured by Whittaker’s index. Aims β diversity reflects species turnover rate across environmental gradients, and this study attempts to use β diversity to reveal relevant ecological processes underlying the changes in plant community composition along a disturbance gradient induced by small burrowing herbivores.
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