منابع مشابه
Phylogenetic Patterns in Northern Hemisphere Plant Geography
Geological and climatological processes that have impacted the biota of the Northern Hemisphere during the Tertiary are expected to yield little resolution when area cladograms are compared without taking the timing of diversification into account. In an attempt to establish a set of appropriate phylogenetic comparisons, we distinguished between a Pacific track involving (minimally) China, Japa...
متن کاملFacilitative plant interactions and climate simultaneously drive alpine plant diversity.
Interactions among species determine local-scale diversity, but local interactions are thought to have minor effects at larger scales. However, quantitative comparisons of the importance of biotic interactions relative to other drivers are rarely made at larger scales. Using a data set spanning 78 sites and five continents, we assessed the relative importance of biotic interactions and climate ...
متن کاملPredicting Plant Species Distribution Across an Alpine
5 Predictive models constitute an important tool in ecology. Using presence/absence data of 6 15 plant species of an alpine rangeland in northern Spain, and a set of 14 topographical and 7 geomorphological descriptors of relatively easy acquisition, we examined and compared the 8 performance of five state-of-the-art methods used in ecological modeling: Multiple Logistic 9 Regression (MLR), Arti...
متن کاملFacilitation and Competition on Gradients in Alpine Plant Communities
We conducted a neighbor removal experiment in natural alpine plant communities of the southwestern Alps to test for the relative importance of competitive and facilitative interactions along elevational and topographical gradients. The experimental sites were chosen to encompass most of the floristic diversity observed along gradients of elevation and topography, which are the two main ecologic...
متن کاملNitrogen:phosphorous supply ratio and allometry in five alpine plant species
In terrestrial ecosystems, atmospheric nitrogen (N) deposition has greatly increased N availability relative to other elements, particularly phosphorus (P). Alterations in the availability of N relative to P can affect plant growth rate and functional traits, as well as resource allocation to above- versus belowground biomass (MA and MB). Biomass allocation among individual plants is broadly si...
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ژورنال
عنوان ژورنال: Botanical Gazette
سال: 1915
ISSN: 0006-8071
DOI: 10.1086/331475