نتایج جستجو برای: endemism
تعداد نتایج: 1521 فیلتر نتایج به سال:
We aimed to identify regional centres of plant biodiversity in South Australia, a sub-continental land area of 983,482 km2, by mapping a suite of metrics. Broad-brush conservation issues associated with the centres were mapped, specifically climate sensitivity, exposure to habitat fragmentation, introduced species and altered fire regimes. We compiled 727,417 plant species records from plot-bas...
Islands represent interesting biogeographic features often defined by unique and dynamic geological biological components. Such systems serve as examples of the basic fundamental units biogeographical analyses: areas endemism. The island Jamaica is recognized possessing a biota with large number herpetofauna species persisting only within island. Further, exhibits geologic history characterized...
Studies on endemism are always of high interest in biogeography and contribute to better understanding the evolution species making conservation plans. The present study aimed investigate patterns planthoppers China by delimiting centers areas endemism. We collected 6,907 spatial distribution records for 860 endemic planthopper from various resources. Centers were identified using weighted valu...
Global conservation prioritization often focuses on protecting the most species for the money invested (e.g., Myers et al. 2000; Orme et al. 2005; Wilson et al. 2006). Biodiversity hotspots and surrogate species are heralded as promising approaches for achieving this goal (e.g., Rodrigues et al. 2004; Bani et al. 2006; Lamoreux et al. 2006). Although identifying biodiversity hotspots (Myers et ...
Most current conservation literature focuses on the preservation of hotspots of species diversity and endemism, as if the two were geographically synonymous. At landscape scales this may not be the case. We collected data from 367 1000-m2 plots in the Grand Staircase–Escalante National Monument, Utah, USA, to show that: (1) the vast majority of plant species are locally rare; (2) species-rich a...
Based on a cladistic biogeographic analysis of 6 species-level phylogenies of harvestman taxa, we searched for congruence in the historical relationships of 12 areas of endemism of the Brazilian Atlantic Rain Forest. We constructed general area cladograms using Primary Brooks Parsimony Analysis (BPA), BPA of nodes, and paralogy-free subtree analysis. These analyses resulted in 6 general area cl...
Summary Two new species are described from the proposed Mulanje-Namuli-Ribáuè Centre of Endemism. Isoglossa perdita I.Darbysh. (Acanthaceae) is apparently restricted to submontane forests southeastern Mt Mulanje in Malawi, and assessed as Critically Endangered. Agelanthus patelii Polhill & Timberlake (Loranthaceae) recorded montane Namuli Mozambique, earlier assessment this Endangered confi...
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