Biodiversity of Pinus (Pinaceae) in Mexico: speciation and palaeo-endemism
نویسندگان
چکیده
منابع مشابه
Biodiversity concordance and the importance of endemism.
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 ...
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Partial cambial mortality is a growth form that is characteristic of Pinus aristata trees. To better elucidate their cambial death pattern, tree size and aspect of cambial death data were gathered from three Pinus aristata forests in central Colorado, USA. Stripping frequency tended to be higher for larger diameter classes. Partial cambial mortality exhibits significant directionality within ea...
متن کاملCrustacean Biodiversity and Endemism in California’s Ephemeral Wetlands
While knowledge of the fauna of California’s ephemeral wetlands has lagged behind that of the flora, recent work has revealed extraordinarily diverse and highly endemic communities. Two recent surveys of crustaceans have shown a number of important attributes of these systems. 1) Species richness and species composition differ among habitat types. 2) Not all pools in an area contain all the sam...
متن کاملSpatial pattern of allozyme variation in a contact zone of Pinus Ponderosa and P. arizonica (Pinaceae).
The spatial distribution of genotypes for nine polymorphic allozyme loci was examined in a contact zone between Pinus ponderosa var. scopulorum and another tree regarded as either a separate species, Pinus arizonica, or variety, Pinus ponderosa var. arizonica, in southern Arizona. Previous work had identified a steep elevational cline for a key taxonomic trait, number of leaf-needles per fascic...
متن کاملONE Speciation and patterns of biodiversity
There are many more species of insects (>850 000) than of their putative sister taxon (Entognatha, 7500 species) (Mayhew 2002). More than 1600 species of birds have been recorded near the Equator in the New World compared with 300–400 species at latitudes around 40° North or South (Gaston & Blackburn 2000). Mammalian families with average body sizes around 10 g have nearly 10 times as many spec...
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ژورنال
عنوان ژورنال: Botanical Journal of the Linnean Society
سال: 1996
ISSN: 0024-4074
DOI: 10.1111/j.1095-8339.1996.tb00762.x