Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Donald H. Wilkison"'
Publikováno v:
River Research and Applications. 32:583-596
The effectiveness of agricultural conservation programmes to adequately reduce nutrient exports to receiving streams and to help limit downstream hypoxia issues remains a concern. Quantifying programme success can be difficult given that short-term b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a93714b2bd08c4fd5a7c65860b109ec
https://doi.org/10.1002/rra.2887
https://doi.org/10.1002/rra.2887
Publikováno v:
Hydrological Processes. 28:2535-2549
Large water-sample sets collected from 1899 through 1902, 1907, and in the early 1950s allow comparisons of pre-impoundment and post-impoundment (1969 through 2008) nitrogen concentrations in the lower Missouri River. Although urban wastes were not l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::607bcc58904108f6be46c007a77265af
https://doi.org/10.1002/hyp.9797
https://doi.org/10.1002/hyp.9797
Publikováno v:
Scientific Investigations Report.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::80a263409eb5b9cfada6d635a55c8f77
https://doi.org/10.3133/sir20135197
https://doi.org/10.3133/sir20135197
Autor:
Cecily C. Y. Chang, Donald H. Wilkison, Ronald J. Avanzino, Steven R. Silva, Carol Kendall, A.C. Ziegler
Publikováno v:
Journal of Hydrology. 228:22-36
A new method for concentrating nitrate from fresh waters for δ15N and δ18O analysis has been developed and field-tested for four years. The benefits of the method are: (1) elimination of the need to transport large volumes of water to the laborator
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6948b6174080f12ef2a67021181fccd3
https://doi.org/10.1016/s0022-1694(99)00205-x
https://doi.org/10.1016/s0022-1694(99)00205-x
Autor:
Donald H. Wilkison, Dale W. Blevins
Publikováno v:
Journal of Environmental Quality. 28:1568-1580
A study site underlain by a claypan soil was instrumented to examine the transport of fertilizer nitrogen (N) under corn (Zea mays L.) cultivation. The study was designed to examine N transport within the unsaturated zone and in interflow (the satura
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::98e090c283a0d0adeadb0f4ef26c1460
https://doi.org/10.2134/jeq1999.00472425002800050022x
https://doi.org/10.2134/jeq1999.00472425002800050022x
Publikováno v:
Journal of Environmental Quality. 26:361-371
Intense rains produced flooding during the spring and summer of 1993 over much of the midwestern USA including many agricultural areas of Missouri. Because of potential contamination from floodwater, an investigation was conducted to determine the ch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3c6f70f56866e8dace9f0105a32b0fe6
https://doi.org/10.2134/jeq1997.00472425002600020005x
https://doi.org/10.2134/jeq1997.00472425002600020005x
Publikováno v:
Journal of Environmental Quality. 25:584-593
Although water from 20 to 25% of shallow farmstead wells in northern Missouri has concentrations of nitrate (NO 3 - ) exceeding 10 mg L -1 as nitrogen (N), many potential sources for this NO 3 - are usually present. A field experiment was designed to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2c9b5a7ee9c43c48dbc64335276797b
https://doi.org/10.2134/jeq1996.00472425002500030026x
https://doi.org/10.2134/jeq1996.00472425002500030026x
Autor:
Donald H. Wilkison
Publikováno v:
Scientific Investigations Report.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02e5bbbde726264fce3317708b312a3e
https://doi.org/10.3133/sir20125050
https://doi.org/10.3133/sir20125050
Autor:
Donald H. Wilkison, J. Jeffrey Starn, Joyce E. Williamson, Aldo V. Vecchia, Dale M. Robertson, Virginia L. McGuire, Elizabeth A. Ahearn, James R. Slack, Kathleen M. Neitzert, Jeffrey W. Frey, Dennis R. Helsel, Wendy J. Danchuk, David L. Lorenz, Kathy E. Lee, Janet M. Carter, David C. Leeth, Jeffrey D. Martin, Timothy A. Cohn
Publikováno v:
Open-File Report.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3328c8c3494ea0087e975cf42430242
https://doi.org/10.3133/ofr20111130
https://doi.org/10.3133/ofr20111130
Autor:
Jerri V. Davis, Donald H. Wilkison
Publikováno v:
Scientific Investigations Report.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d252bf50de1afc2ed4134897cc3f9c4
https://doi.org/10.3133/sir20105150
https://doi.org/10.3133/sir20105150