Mots-clés
Bassin-versant Espace urbain Espace vert Etats-Unis Lutte contre la pollution New York State Pollution Qualité de l'eau Végétation ripicole Green space New York State Pollution Pollution control Riparian vegetation United States of America Urban area Water quality Watershed Calidad del agua Contaminación Cuenca hidrográfica Espacio urbano Espacio verde Lucha contra la contaminación Vegetación ribereñaInfluence of open space on water quality in an urban stream
Auteur(s) et Affiliation(s)
CUNNINGHAM, M.A.
Dep. of Earth Science and Geography, Vassar College, Poughkeepsie, Etats-Unis
MENKING, K.M.
Dep. of Earth Science and Geography, Vassar College, Poughkeepsie, Etats-Unis
GILLIKIN, D.P.
Dep. of Earth Science and Geography, Vassar College, Poughkeepsie, Etats-Unis
SMITH, K.C.
Environmental Research Inst., Vassar College, Poughkeepsie, Etats-Unis
FREIMUTH, C.P.
Environmental Research Inst., Vassar College, Poughkeepsie, Etats-Unis
BELLI, S.L.
Dep. of Chemistry, Vassar College, Poughkeepsie, Etats-Unis
Dep. of Biology, Vassar College, Poughkeepsie, Etats-Unis
SCHLESSMAN, M.A.
Dep. of Biology, Vassar College, Poughkeepsie, Etats-Unis
BATUR, P.
Dep. of Sociology, Vassar College, Poughkeepsie, Etats-Unis
Description :
The AA. examined changes in conductivity, total inorganic nitrogen (TIN), and a family biotic index (FBI) for benthic macroinvertebrates in a partially urbanized stream in eastern New York state, USA. The AA. expected conductivity, which results mainly from road de-icing salt, to decrease in the green space due to dilution from low-conductivity surface runoff. They also expected TIN and FBI to indicate stream improvements in response to increased vegetative cover in the green space. Contrary to expectations, conductivity did not improve in the ecological preserve, although TIN and FBI values did improve. Differences in scales of response explain this contrast in recovery/conductivity responded to basin-wide percentage impervious surface cover (ISC), while TIN and FBI responded to riparian-scale ISC, which declined sharply in the ecological preserve. Conserving riparian green space can aid natural recovery of TIN and FBI. In contrast, controlling conductivity requires watershed-wide management.
Type de document :
Article de périodique
Source :
Physical geography, issn : 0272-3646, 2010, vol. 31, n°. 4, p. 336-356, nombre de pages : 21, Références bibliographiques : 4 p.
Date :
2010
Editeur :
Pays édition : Royaume-Uni, Abingdon, Taylor and Francis
Langue :
Anglais
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)