Results 41 to 50 of about 23,926 (199)
Gradual climatic changes caused by mountains’ altitudinal variation promote alterations in the structure of ecological communities. Environmental changes are also expected according to the slope’s position in relation to the sea.
Thiago Vieira Costa +2 more
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Functional responses in a lizard along a 3.5‐km altitudinal gradient
AbstractAimPhysiological and metabolic performance are key mediators of the functional response of species to environmental change. Few environments offer such a multifaceted array of stressors as high‐altitude habitats, which differ markedly in temperature, water availability, UV radiation and oxygen pressure compared to low‐altitude habitats. Species
Nina Serén +7 more
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Elevational and latitudinal changes in tree associations and diversity in the Eastern Arc mountains of Tanzania [PDF]
A total of 200 variable-area plots covering 20 3 ha containing 4000 trees with a basal area of 921 4 m2 were assessed over a combined elevational range of 410-2180 m in the moist forests of three Tanzanian Eastern Arc mountains: West Usambara, Nguru and ...
Lovett, J.C.
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Plants have evolved several metabolic pathways as a response to environmental stressors such as low temperatures. In this perspective, it is paramount to highlight physiological mechanisms of plant responses to altitudinal gradients as a proxy to ...
Inayat Ur Rahman +9 more
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Parallel functional and stoichiometric trait shifts in South American and African forest communities with elevation [PDF]
The Amazon and Congo basins are the two largest continuous blocks of tropical forest with a central role for global biogeochemical cycles and ecology. However, both biomes differ in structure and species richness and composition.
C. Taveirne +8 more
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Macrofungi of the altitudinal gradient, Northern Rocky Mountains [PDF]
Macrofungal communities of four altitudinal zones of the Northern Rocky Mountain region are described and compared with respect to species richness, production (g/100m2/yr), functional structure (mycorrhizal vs. decomposer), seasonality of activity and relationship to temperature and rainfall.
openaire +1 more source
Methane-cycling microorganisms in soils of a high-alpine altitudinal gradient [PDF]
Methanogens and methanotrophs play unique roles as producers and consumers of the greenhouse gas methane (CH4) in soils, respectively. Here, we aimed to reveal whether and to which extent methane-cyclers occur in high-alpine soils, and to assess their spatial distribution along an altitudinal gradient (2700-3500 m) in the Austrian Alps at sites located
Katrin, Hofmann +4 more
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Varying patterns of plant community diversity along geographical gradients are a significant topic in biodiversity research. Here, to explore the integrated effects of latitude and altitude on the plant community diversity in a mountainous ecosystem, we ...
Manhou Xu, Li Ma, Yanyan Jia, Min Liu
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Freezing tolerance in grasses along an altitudinal gradient in the Venezuelan Andes [PDF]
The tropical high Andes experience greater daily temperature oscillations compared to seasonal ones as well as a high frequency of night frost occurrence year round. Survival of organisms, under such environmental conditions, has been determined by selective forces which have evolved into adaptations including avoidance or tolerance to freezing.
Edjuly J, Márquez +2 more
openaire +2 more sources
Höhengradienten in der Biodiversitäts-Forschung: eine Übersicht unter Berücksichtigung des Klimawandels [PDF]
Mountains, with their isolated position and altitudinal belts, are hotspots of biodiversity. Their flora and fauna have been observed worldwide since the days of Alexander von Humboldt, which has led to basic knowledge and understanding of species ...
Blaschke, Markus +2 more
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