Zobrazeno 1 - 10
of 40
pro vyhledávání: '"William E. Emmerich"'
Publikováno v:
CATENA. 87:172-181
Selective erosion and transport of silt and clay particles from watershed soil surfaces leads to enrichment of suspended sediments by size fractions that are the most effective scavengers of chemical pollutants. Thus, preferential transport of highly
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d572fb01894db8a37e070e7ddb8dbbb
https://doi.org/10.1016/j.catena.2011.05.002
https://doi.org/10.1016/j.catena.2011.05.002
Autor:
Joaquin Sanabria, Rebecca L. Phillips, Albert B. Frank, Patricia C. Mielnick, Tony J. Svejcar, Phillip L. Sims, William A. Dugas, Jack A. Morgan, Raymond F. Angell, Nicanor Z. Saliendra, Douglas A. Johnson, William E. Emmerich, Keirith A. Snyder, James A. Bradford, H. Wayne Polley
Publikováno v:
Rangeland Ecology & Management. 63:176-186
Rangelands occupy 50% of Earth’s land surface and thus are important in the terrestrial carbon (C) cycle. For rangelands and other terrestrial ecosystems, the balance between photosynthetic uptake of carbon dioxide (CO2) and CO2 loss to respiration
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5afbf5bfc24cc2ce3b79a9ba7e1e1589
https://doi.org/10.2111/rem-d-09-00015.1
https://doi.org/10.2111/rem-d-09-00015.1
Autor:
Raymond Angell, James A. Bradford, Phillip L. Sims, Douglas A. Johnson, Jack A. Morgan, Keirith A. Snyder, Albert B. Frank, Rebecca L. Phillips, William E. Emmerich, Tony J. Svejcar, H. Wayne Polley, Nicanor Z. Saliendra
Publikováno v:
Global Change Biology. 16:990-1002
For most ecosystems, net ecosystem exchange of CO 2 (NEE) varies within and among years in response to environmental change. We analyzed measurements of CO 2 exchange from eight native rangeland ecosystems in the western United States (58 site-years
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4251acb7d009ba2bcd1a63b75739bc1f
https://doi.org/10.1111/j.1365-2486.2009.01966.x
https://doi.org/10.1111/j.1365-2486.2009.01966.x
Autor:
Russell L. Scott, Chandra Holifield Collins, Erik P. Hamerlynck, Kristin N. Green, M. Susan Moran, William E. Emmerich
Publikováno v:
Agricultural and Forest Meteorology. 149:2133-2142
Across the western United States, warm-season grasslands are being invaded by the exotic perennial grass, Eragrostis lehmanniana (Lehmann lovegrass). The objective of this study was to quantify the change in surface water balance, particularly the ev
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af0271615416c2debee17e4f81707e09
https://doi.org/10.1016/j.agrformet.2009.03.018
https://doi.org/10.1016/j.agrformet.2009.03.018
Autor:
T. O. Keefer, Grey Nearing, M.S. Moran, Mariano Hernandez, Michael H. Cosh, Ginger B. Paige, William E. Emmerich, Russell L. Scott, Peggy O'Neill
Publikováno v:
Agricultural and Forest Meteorology. 149:59-72
Information about the ratio of transpiration (T) to total evapotranspiration (T/ET) is related to critical global change concerns, including shrub encroachment and non-native species invasion. In this study, a new approach was developed to partition
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c92c3d8da978b49897ef939edc076540
https://doi.org/10.1016/j.agrformet.2008.07.004
https://doi.org/10.1016/j.agrformet.2008.07.004
Autor:
William E. Emmerich, Herman S. Mayeux, Gerald E. Schuman, Albert B. Frank, Phillip L. Sims, Raymond F. Angell, Douglas A. Johnson, Pat Mielnick, Tony J. Svejcar, Tagir G. Gilmanov, Jack A. Morgan, M.R. Haferkamp, James A. Bradford, Nicanor Z. Saliendra, Kereith Snyder, W.A. Dugas
Publikováno v:
Rangeland Ecology & Management. 61:465-474
Rangelands account for almost half of the earth’s land surface and may play an important role in the global carbon (C) cycle. We studied net ecosystem exchange (NEE) of C on eight North American rangeland sites over a 6-yr period. Management practi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8bc7f9fc27b22c931f3d04083103815e
https://doi.org/10.2111/07-108.1
https://doi.org/10.2111/07-108.1
Autor:
F. E. Rhoton, Daniel S. McChesney, Mark A. Nearing, Jerry C. Ritchie, David A. DiCarlo, William E. Emmerich
Publikováno v:
Soil Science Society of America Journal. 72:1102-1112
Identification of primary sediment source areas in watersheds is necessary to ensure that best management practices are installed in areas that maximize reductions in sediment and chemical loadings of receiving waters. Our objectives were to use a so
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::055280c541c82af09682fa907d65b4bd
https://doi.org/10.2136/sssaj2007.0066
https://doi.org/10.2136/sssaj2007.0066
Autor:
William E. Emmerich
Publikováno v:
Rangeland Ecology & Management. 60:464-470
Ecosystem water use efficiency (EWUE) is defined as the net carbon uptake per amount of water lost from the ecosystem and is a useful measure of the functionality in semiarid shrub and grassland communities. C4 grasses have higher water use efficienc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fdb924e26af7267d9a1146c3b877c573
https://doi.org/10.2111/1551-5028(2007)60[464:ewueia]2.0.co
https://doi.org/10.2111/1551-5028(2007)60[464:ewueia]2.0.co
Publikováno v:
Soil Science Society of America Journal. 71:984-992
Variations in soil profi le thickness, surface soil properties, erosion rates, runoff, and sediment properties within similar soils and watersheds are controlled by slope factors such as steepness, length, and position through their infl uence on soi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e0ccad1efab79e08cae734cbbf18c2ad
https://doi.org/10.2136/sssaj2005.0238
https://doi.org/10.2136/sssaj2005.0238
Autor:
William E. Emmerich, J. R. Simanton
Publikováno v:
Variability in Rangeland Water Erosion Processes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::99a15e589822c9f9fe68da4e3e44b9eb
https://doi.org/10.2136/sssaspecpub38.c5
https://doi.org/10.2136/sssaspecpub38.c5
