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PORTAIL D'INFORMATION GÉOGRAPHIQUE

Foliar nitrogen responses to the environmental gradient matrix of the Adirondack Park, New York

Auteur(s) et Affiliation(s)

MCNEIL, B.E.
Dep. of Geology and Geography, West Virginia Univ., Morgantown, Etats-Unis
READ, J.M.
Dep. of Geography, Univ., Syracuse, Etats-Unis
DRISCOLL, C.T.
Dep. of Civil and Environmental Engineering, Univ., Syracuse, Etats-Unis


Description :
The AA. relate a regional survey of foliar N data from a diverse set of forest tree species in the Adirondack Park, New York, to a holistic matrix of environmental gradients thought to control spatial variability of foliar N. Stepwise multiple regression models developed for each species indicate that neighboring species and abiotic gradients of resource availability play a lesser role, and anthropogenic influences are the strongest drivers of spatial variability in foliar N. Moreover, they find that the plasticity of the total foliar N response to measured environmental variability is strongly related to 2 indexes of a species' resource strategy : leaf mass per area and shade tolerance. These results emphasize the potentially dominant role of humans in controlling future nutrient cycling, and suggest that spatially explicit measurements of foliar N, environmental gradients, and plant resource strategies might provide a pathway to map and forecast ecosystem services at regional scales.


Type de document :
Article de périodique

Source :
Annals of the Association of American Geographers, issn : 0004-5608, 2012, vol. 102, n°. 1, p. 1-16, nombre de pages : 16, Références bibliographiques : 3 p.

Date :
2012

Editeur :
Pays édition : Etats-Unis, Washington, DC, Association of American Geographers

Langue :
Anglais
Droits :
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