Zobrazeno 1 - 10
of 77
pro vyhledávání: '"G. Bruce Wiersma"'
Publikováno v:
Forest Ecology and Management. 258:895-902
At the Bear Brook Watershed in Maine (BBWM), we examined the effects of long-term experimentally elevated N and S deposition on foliar chemistry, growth, and photosynthetic capacity of sugar maple (Acer saccharum) saplings. The BBWM is a paired water
Autor:
Michael S. Greenwood, Michael E. Day, Ivan J. Fernandez, G. Bruce Wiersma, Jose Alexander Elvir
Publikováno v:
Forest Ecology and Management. 221:207-214
Effects of enhanced nitrogen deposition on nutrient foliar concentrations and net photosynthesis of sugar maple ( Acer saccharum Marsh.), American beech ( Fagus grandifolia Ehrh) and red spruce ( Picea rubens Sarg.) were evaluated at the Bear Brook W
Autor:
Alan S. White, Jose Alexander Elvir, G. Bruce Wiersma, Ivan J. Fernandez, Lindsey E. Rustad, Gregory J. White
Publikováno v:
Canadian Journal of Forest Research. 35:1402-1410
The foliar chemistry of sugar maple (Acer saccharum Marsh.), American beech (Fagus grandifolia Ehrh.), and red spruce (Picea rubens Sarg.) was studied from 1993 to 2003 at the Bear Brook Watershed in Maine (BBWM). The BBWM is a paired-watershed fores
Publikováno v:
Canadian Journal of Forest Research. 33:862-869
Responses in basal area increment (BAI) of sugar maple (Acer saccharum Marsh.) and red spruce (Picea rubens Sarg.) to chronic ammonium sulfate ((NH4)2SO4) treatment were examined at the Bear Brook Watershed in Maine. The Bear Brook Watershed is a pai
Publikováno v:
Environmental monitoring and assessment. 171(1-4)
At the Bear Brook Watershed in Maine (BBWM), the forest tree composition was characterized and the effects of the chronic ammonium sulfate ((NH(4))(2)SO(4)) treatment on basal area growth, foliar chemistry, and gas exchange were investigated on fores
Publikováno v:
Environmental Monitoring and Assessment. 17:3-31
Integrated ecosystem and pollutant monitoring is being conducted at prototype global baseline sites in remote areas of the Noatak National Preserve, Alaska, the Wind River Mountains, Wyoming, and Torres del Paine National Park, Chile. A systems appro
Publikováno v:
Journal of Environmental Management. 32:81-92
This paper discusses the use of simple kinetic models to help design environmental monitoring programs. A process is described in which modeling results and field measurements are used in an iterative manner in the development of a monitoring program