The results of this study will add to our understanding of community composition change across tree-line ecotones
and provide information specific to this Labrador tree line that may help to predict the local ecosystem impacts of climate change.
In the in situ model, the steepness of the ecotones
yields different levels of isolation between neighboring populations as a result of natural selection rather than restricted gene flow at a geographic barrier.
Neotropical migrant birds and edge effects at a forest-stream ecotone
Forest area and the forest/agriculture ecotone
are suitable for wild boars (see Table 2).
Predators capture concentrations of prey more effectively and in greater quantities along ecotones
, no matter what size animal we're talking about, from microscopic to whale sharks.
stilesi) may occur between reciprocally naive populations of endemic and introduced subspecies of muskoxen at the ecotone
(interface between [greater than or equal to] 2 regions or habitats) formed by the Mackenzie River (4,21) (category of emergence: host switching and geographic expansion).
, we know, are perilous places, where predators
are probably important reservoirs of biodiversity within landscapes.
In contrast to documented increases in woody plant dominance of former savannas and grasslands of North America, ecotones
between oak (Quercus L.
In reality, true ecotones
only occur in cases in which a given environmental variable changes relatively suddenly, while ecoclines correspond to situations in which the changes in environmental variables are relatively gradual.
Similarly, spatial stability of savannas and ecotones
in both humid and arid regions of the world has been attributed to positive feedbacks between trees and tree seedling establishment (e.
As with other threshold phenomena, some ecotones
are simply explained by sharp discontinuities in the abiotic environment.