منابع مشابه
Ant Diversity and Function in Disturbed and Changing Habitats
Habitat transformation and disturbance are significant threats to biodiversity conservation and ecosystem function. Disturbance is generally defined as any event that removes biomass (Townsend and Hildrew 1994), and is distinguished from habitat transformation or stress, which reduces available resources or changes the microclimate or structure of the habitat (Andersen 2000; Pickett and White 1...
متن کاملField assessments in western Kenya link malaria vectors to environmentally disturbed habitats during the dry season
BACKGROUND Numerous malaria epidemics have occurred in western Kenya, with increasing frequency over the past 20 years. A variety of hypotheses on the etiology of these epidemics have been put forth, with different implications for surveillance and control. We investigated the ecological and socioeconomic factors promoting highland malaria vectors in the dry season after the 2002 epidemic. ME...
متن کاملSpecies richness in natural and disturbed habitats: Asteraceae and Flower-head insects (Tephritidae: Diptera).
Anthropogenic changes in the landscape result in an environmental mosaic with serious consequences for biodiversity. The aim of the present study was to assess the effects of the anthropogenic changes on Asteraceae richness and abundance, and to evaluate the consequences for the richness of Tephritidae assemblages in five sampling sites, with three sampled habitats in each: cerrado (Brazilian s...
متن کاملRoughing it: a mantellid poison frog shows greater alkaloid diversity in some disturbed habitats.
Four five-skin alkaloid extracts of the Madagascan poison frog Mantella baroni from three disturbed collection sites were compared with four five-skin extracts from three undisturbed sites. The number of alkaloids (diversity) was significantly different in M. baroni between undisturbed and disturbed collection sites, with more alkaloids generally being found in frogs from disturbed sites. Two u...
متن کاملArthropod Diversity between Undisturbed and Disturbed Habitats of South Miami, Florida
Arthropod diversity between disturbed and undisturbed habitats was studied. Arthropods are organisms that have six or more jointed legs, there are numerous in species and can be found in several different habitats. In our experiment, we wanted to test if there was a significant difference in arthropod diversity between undisturbed and disturbed areas of South Florida. We focused on two Miami-Da...
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ژورنال
عنوان ژورنال: Nature
سال: 1976
ISSN: 0028-0836,1476-4687
DOI: 10.1038/260750a0