منابع مشابه
A Revision of the Recent Species of Stephanocyathus (anthozoa: Scleractinia) in the Western Atlantic, with Descriptions of Two New Species
Based on abundant material, four species of the genus Stephanocyathiis are distinguished in the western Atlantic: S. (.S'.) tliaclenui (Moselcy). .V. (5.) paUjcnis n. sp.. .V. (.V.) loevijiinchis n. sp., and S. (O.) coronutnx (Pourtales). These four species are fully described and illustrated; their bathymetric and geographic ranges are provided. The taxonomic position of Stephanocyalhus discoi...
متن کاملEstimating species richness
Measuring species richness is an essential objective for many community ecologists and conservation biologists. The number of species in a local assemblage is an intuitive and natural index of community structure, and patterns of species richness have been measured at both small (e.g. Blake & Loiselle 2000) and large (e.g. Rahbek & Graves 2001) spatial scales. Many classic models in community e...
متن کاملSpecies Richness Estimation
Various models and estimation procedures for estimating the number of species in a community are reviewed under the following sampling schemes: sampling by continuous-type of efforts, sampling by individuals, and sampling by quadrats (or multiple occasions). Applications and relevant software are briefly reviewed.
متن کاملPredicting microbial species richness.
Microorganisms are spectacularly diverse phylogenetically, but available estimates of their species richness are vague and problematic. For example, for comparable environments, the estimated numbers of species range from a few dozen or hundreds to tens of thousands and even half a million. Such estimates provide no baseline information on either local or global microbial species richness. We a...
متن کاملComparative Embryology of Eleven Species of Stony Corals (Scleractinia)
A comprehensive understanding of coral reproduction and development is needed because corals are threatened in many ways by human activity. Major threats include the loss of their photosynthetic symbionts (Symbiodinium) caused by rising temperatures (bleaching), reduced ability to calcify caused by ocean acidification, increased storm severity associated with global climate change and an increa...
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ژورنال
عنوان ژورنال: Atoll Research Bulletin
سال: 1999
ISSN: 0077-5630
DOI: 10.5479/si.00775630.459.1