Isolation by distance, not rivers, control the distribution of termite species in the Amazonian rain forest
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Historical Human Footprint on Modern Tree Species Composition in the Purus-Madeira Interfluve, Central Amazonia
BACKGROUND Native Amazonian populations managed forest resources in numerous ways, often creating oligarchic forests dominated by useful trees. The scale and spatial distribution of forest modification beyond pre-Columbian settlements is still unknown, although recent studies propose that human impact away from rivers was minimal. We tested the hypothesis that past human management of the usefu...
متن کاملTwenty years of understorey bird extinctions from Amazonian rain forest fragments: consistent trends and landscape-mediated dynamics
Aim We analysed presence/absence data for understorey bird species in rain forest fragments sampled from 1979 through 2001. Here we consider extinctions between 1992, when most fragments had been isolated for at least 8 years, and 2001. Our objectives were to determine whether high extinction rates documented soon after isolation continued through up to 20 years after isolation, and to examine ...
متن کاملNeogene and Quaternary history of vegetation, climate, and plant diversity in Amazonia
The neotropical Amazonian and Andean plant diversity developed mainly during the Tertiary. In Amazonia, Miocene #oral diversity seems considerably higher than today. During the Neogene, tropical taxa entered newly created montane area, and montane taxa entered the tropical lowlands. The general decrease of temperature during the upper Neogene and especially during the Quaternary glacial periods...
متن کاملTermite (Insecta: Isoptera) Species Composition in a Primary Rain Forest and Agroforests in Central Amazonia
Termites play important roles in organic matter decomposition, nutrient cycling, and soil structure in tropical rain forests. When forests are replaced by agriculture, termite species richness, abundance, and function often decline. We compared the termite assemblage of a primary forest site with that of a low plant diversity, palm-based agroforest (five plant species) and a high plant diversit...
متن کاملInvestigating factors affecting the occurrence of mass movements using Multivariate Linear Regression (Case study: Abidar watershed)
Investigating the factors affecting the occurrence of mass movements, help to identify sensitive areas and providing solutions and ways to control and proper management, partly to prevent the occurrence of mass movements. This research tried to recognize the factor affecting the occurrence of mass movements in the Forest Park Abidar watershed. In this research, information layers including lith...
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تاریخ انتشار 2016