Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Victor C. Engel"'
Autor:
Victor C. Engel1
Publikováno v:
Tree Physiology. Oct2004, Vol. 24 Issue 10, p1137-1145. 9p.
Publikováno v:
Scientific Investigations Report.
Publikováno v:
Climatic Change. 75:455-493
During the 20th century the northeastern U.S.A. has undergone an annual temperature increase of 1 °C, the combined effect of winter warming and an increase in daily summer minimum temperatures. A significant cooling of spring through autumn in maxim
Autor:
Christie A. Klimas, Katie A. Grieve, Linda Handley, Stanley J. Zarnoch, Ramesh Murthy, Phillip M. Dougherty, Greg A. Barron-Gafford, Jianwei Zhang, Victor C. Engel, Mark J. Potosnak
Publikováno v:
Global Change Biology. 11:716-731
We examined the effects of atmospheric vapor pressure deficit (VPD) and soil moisture stress (SMS) on leaf- and stand-level CO2 exchange in model 3-year-old coppiced cottonwood (Populus deltoides Bartr.) plantations using the large-scale, controlled
Autor:
Kevin L. Griffin, Victor C. Engel, Matthew H. Turnbull, Adrian S. Walcroft, David Whitehead, David T. Tissue, William S. F. Schuster, Kim J. Brown
Publikováno v:
Global Change Biology. 10:925-938
Measurements of photosynthesis and respiration were made on leaves in summer in a Quercus rubra L. canopy at approximately hourly intervals throughout 5 days and nights. Leaves were selected in the upper canopy in fully sunlit conditions (upper) and
Publikováno v:
Ecological Modelling. 154:263-288
We present observations and simulations examining plant–water relations in a forested catchment characterized by strong topographic control over surface hydrology and stand structure. The system is dominated by xeric and mesic ecotypes of Quercus r
Autor:
Howard T. Odum, Victor C. Engel
Publikováno v:
Ecological Engineering. 13:107-134
The complexity and scale of Biosphere 2 under materially closed conditions represented a unique opportunity to investigate couplings between elemental cycles and community metabolism. For this paper, simulation models were developed to explore indivi
Publikováno v:
Geophysical Research Letters. 38
[1] Wetland ecosystems are often characterized by distinct vegetation patterns. Various mechanisms have been proposed to explain the formation of these patterns; including spatially variable peat accumulation and water ponding. Recently, short-range
Publikováno v:
Water Resources Research. 45
[1] Surface water flow dynamics in the Florida Everglades were investigated using sulfur hexafluoride tracer releases, from which advection and dispersion were determined. Several sites were studied, each characterized by different vegetation pattern
Publikováno v:
Geophysical Research Letters. 36
[1] Information on sheet flow patterns in the marsh ridge and slough habitat of the Florida Everglades is scarce, primarily because of difficulty in taking measurements across large enough spatial scales in such a heterogeneous environment. As part o