ecotone


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ecotone

(ē′kə-tōn′, ĕk′ə-)
n.
A transitional zone between two communities containing the characteristic species of each.

ecotone

the zone of distribution of an organism across the boundaries of which the individuals of a species become progressively fewer, less productive, and sometimes smaller.
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Also, the exceptions to the recent trend of increasing treeline altitudes has been related to such features as grazing, soil erosion, and the associated lag in regeneration time of a formerly occupied treeline ecotone (Juntunen et al.
As supporters of the environmental movement, Ecotone will donate a minimum of 10 percent of its profits to environmental and social organizations, and will publish all books on recycled-content paper.
By implementing our 'less is more' approach to stream restoration we reduced project costs, minimized our carbon footprint, and kept heavy equipment off local roadways," said Scott McGill, founder and CEO of Ecotone.
Johnson has observed that, in some areas, the alpine treeline ecotone is moving up in elevation.
2011) found that sharks disproportionately used eelgrass ecotone more, despite its low availability in BCFTB.
TABLE 1 Environmental descriptors of the forested (FO), intermediate (IN) and pasture (PA) streams in the Machado River basin, RO Descriptors FO Land use in the adjacent matrix Primary forest Presence of macrophytes Absent Riparian ecotone vegetation Shrubby and woody on the right bank angiosperms Riparian ecotone vegetation Shrubby and woody on the left bank angiosperms Physical variables Depth (m) 42.
This new locality extends the geographic distribution of the species about 310 km to the east and represents the easternmost limit for the species range, in a Cerrado-Caatinga-Atlantic Forest ecotone (Fig.
The sedimentary caatinga environment had the largest number of surveys in our dataset, with 18 sites, followed by the crystalline caatinga (12 sites), inselberg communities (10), arboreal caatinga (9), riverine forest (8), caatinga in the agreste ecotone (6), the transition between crystalline and sedimentary sites (6), the caatinga in the Chapada Diamantina highlands (3) and the caatinga in the campo maior ecotone (2) (Table 1; Fig.
As climate warms, abiotic factors, as well as plant community and biodiversity structure, may constrain or promote the movement of ecotone boundaries.
Key words: ecological niche model, ecotone, Melospiza melodia, population genetics, song sparrow, speciation
Review, The Threepenny Review, Shenandoah and Ecotone.