نتایج جستجو برای: biogeography

تعداد نتایج: 5670  

2005
Eugenio Santiago-Valentin Richard G. Olmstead

For years, studies on the classification, evolution and geographic history of the Caribbean biota have ignited much interest, resulting in many studies addressing issues in a variety of contexts. Most of the works on biogeography of the region are predominantly on animal groups, and there is a marked deficiency in similar studies for plant groups. For instance, in the proceedings of a symposium...

Journal: :Annual review of microbiology 1999
J T Staley J J Gosink

This review introduces the subjects of bacterial biodiversity and biogeography. Studies of biogeography are important for understanding biodiversity, the occurrence of threatened species, and the ecological role of free-living and symbiotic prokaryotes. A set of postulates is proposed for biogeography as a guide to determining whether prokaryotes are "cosmopolitan" (found in more than one geogr...

2012
Vimal Savsani

Artificial bee colony optimization (ABC) is a fast and robust algorithm for global optimization. It has been widely used in many areas including mechanical engineering. Biogeography -Based Optimizat ion (BBO) is a new biogeography inspired algorithm. It mainly uses the biogeography-based migration operator to share the information among solutions. In this work, a hybrid algorithm with BBO and A...

Journal: :Systematic biology 2014
Alan Gray Stephen Cavers

Island biogeography theory is fundamentally reliant on measuring the number of species per island and hence has taxonomy at its foundation. Yet as a metric used in tests of the theory, island species richness (S) has varied with time according to the level of taxonomic effort (a function of the rate of finding and describing species). Studies using a derivative of S, single-island endemic speci...

Journal: :Philosophical transactions of the Royal Society of London. Series B, Biological sciences 2011
Robert E Ricklefs David G Jenkins

Although ecology and biogeography had common origins in the natural history of the nineteenth century, they diverged substantially during the early twentieth century as ecology became increasingly hypothesis-driven and experimental. This mechanistic focus narrowed ecology's purview to local scales of time and space, and mostly excluded large-scale phenomena and historical explanations. In paral...

Journal: :Journal of Biogeography 2009

Journal: :Systematic Biology 2006

Journal: :Proceedings of the National Academy of Sciences 1999

2013
Donald A. McFarlane Joyce Lundberg DONALD A. MCFARLANE JOYCE LUNDBERG

A middle Pleistocene age and biogeography for the extinct rodent Megalomys curazensis from Curacao, Netherlands Antilles.

Journal: :نامه انجمن حشره شناسی ایران 0
j. mohaghegh

morphometric differentiations may explain biogeographic distinctions among populations of a given species. the possibility of morphometric distinctions between two populations of eurygaster maura l. collected from the northeast (golestan province) and the northwest (azarbayejan province) of iran was examined using principal component analysis over 25 body measurements (eight absolute and 17 pro...

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