منابع مشابه
Oceanic Islands: Models of Diversity
adaptive radiation Evolution of ecological and phenotypic diversity within a rapidly multiplying lineage. allopatric Occurring in separate, nonoverlapping geographic areas. dioecious In plants, having the male and female reproductive organs borne on separate individuals of the same species. disharmony The nonrandom representation of biota among natural colonists of oceanic islands as compared w...
متن کاملThreats to avifauna on oceanic islands.
Results of the study by Blackburn et al. (2004a) of avifauna on oceanic islands suggest that distance from the mainland and time since European colonization have major influences on species extinctions and that island area is a significant but secondary contributing factor. After augmenting the data of the study on geographical properties for some of the islands they examined, we used a causal ...
متن کاملIs heterostyly rare on oceanic islands?
Heterostyly has been considered rare or absent on oceanic islands. However, there has been no comprehensive review on this issue. Is heterostyly truly rare on oceanic islands? What makes heterostyly rare on such islands? To answer these questions, we review the reproductive studies on heterostyly on oceanic islands, with special emphasis on the heterostylous genus Psychotria in the Pacific Ocea...
متن کاملHypsometry of Glaciated Landscapes
Hypsometry (frequency distribution of elevations) is often used to characterize landscape morphology, traditionally in the context of the degree of fluvial dissection. Recently, the hypsometry of glaciated regions has been used to infer how rates of glacial erosion compare with tectonic uplift rates. However, many factors other than tectonics can also exert a major influence on the hypsometry o...
متن کاملThe biogeography of avian extinctions on oceanic islands
Island avifaunas have suffered a disproportionately high number and rate of extinctions (Manne et al., 1999). In a study of extinctions on oceanic islands, Blackburn et al. (2004) found that the number of human-introduced mammalian predators was significantly associated with the proportion of native bird species that have become extinct during the period since European colonization of the islan...
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ژورنال
عنوان ژورنال: Geomorphology RAS
سال: 2015
ISSN: 0435-4281
DOI: 10.15356/0435-4281-2005-3-66-71