Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Patricia S. Johnson"'
Autor:
Jameson R. Brennan, Janna J Block, Patricia S. Johnson, Kenneth C. Olson, Christopher S. Schauer
Publikováno v:
Rangeland Ecology & Management. 76:12-21
Prairie dogs can reduce the carrying capacity on rangelands by up to 50% through direct consumption of vegetation and by clipping plants. Studies have shown that forage quality and digestibility are greater on prairie dog towns than off town; however
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2fd890f856f0256b636b8bc99fbe9768
https://doi.org/10.1016/j.rama.2021.01.004
https://doi.org/10.1016/j.rama.2021.01.004
Publikováno v:
Biogeosciences, Vol 17, Pp 1281-1292 (2020)
Black-tailed prairie dogs (Cynomys ludovicianus) have been described as a keystone species and are important for grassland conservation, yet many concerns exist over the impact of prairie dogs on plant biomass production and consequently livestock pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8b6072533160561ce75a6dbf761e53e1
https://www.biogeosciences.net/17/1281/2020/bg-17-1281-2020.pdf
https://www.biogeosciences.net/17/1281/2020/bg-17-1281-2020.pdf
Publikováno v:
Rangeland Ecology & Management. 72:615-618
The use of global positioning system (GPS) technology to study livestock movement has been widely adopted in range and animal sciences; however, the methods for processing GPS collar data are varied among researchers and often involve repetitive, tim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f171a6961f8b0acba7a5a4efa32ced3
https://doi.org/10.1016/j.rama.2019.03.003
https://doi.org/10.1016/j.rama.2019.03.003
Publikováno v:
American Journal of Plant Sciences. 10:1030-1047
Alfalfa (Medicago sativa L.) is an important forage and conservation crop in North America but occurrences of naturalized alfalfa in rangelands are rare. A naturalized population of yellow-flowered alfalfa in mixed-grass prairie on the Grand River Na
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7f30dddf0402e162c5032fc4a6d7f09
https://doi.org/10.4236/ajps.2019.106075
https://doi.org/10.4236/ajps.2019.106075
The use of high resolution imagery in remote sensing has the potential to improve understanding of patch level variability in plant structure and community composition that may be lost at coarser scales. Random forest (RF) is a machine learning techn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5414d5fad9392f4f88f1fc818fc3fcce
https://doi.org/10.5194/bg-2019-194
https://doi.org/10.5194/bg-2019-194
Publikováno v:
Computers and Electronics in Agriculture. 181:105957
Remote tracking of livestock through the use of GPS technology has tremendous potential for the study of livestock use patterns on the landscape. The addition of high frequency accelerometers on GPS units has potential to give researchers and manager
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d2a01f15db5b1e9ed05dd82603c94f4
https://doi.org/10.1016/j.compag.2020.105957
https://doi.org/10.1016/j.compag.2020.105957
Autor:
Lan Xu, Aaron L. Field, Roger N. Gates, Patricia S. Johnson, John R. Hendrickson, Kevin K. Sedivec, Benjamin A. Geaumont, Ryan F. Limb
Publikováno v:
Rangelands. 38:34-37
On the Ground•Maintaining cattle and prairie dogs on rangelands is important ecologically, economically, and culturally. However, competition between these species, both actual and perceived, has led to conflict.•We explored the effects of short-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20f2ef7d0e1e77c996e9b655c28af7c9
https://doi.org/10.1016/j.rala.2015.11.004
https://doi.org/10.1016/j.rala.2015.11.004
Autor:
Arvid Boe, Andrew E. Olson, Patricia S. Johnson, Lan Xu, Roger N. Gates, Christopher G. Misar
Publikováno v:
American Journal of Plant Sciences. :238-245
Determining biomass production of individual alfalfa (Medicago sativa L.) plants in space planted evaluation studies is generally not feasible. Clipping plants is time consuming, expensive, and often not possible if the plants are subjected to grazin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::282214faba2ed0171291a84326a8e2fc
https://doi.org/10.4236/ajps.2016.71023
https://doi.org/10.4236/ajps.2016.71023
Autor:
Arvid Boe, Roger N. Gates, Patricia S. Johnson, Christopher S. Schauer, Walter W. Stroup, Lan Xu, John Rickertsen, Christopher G. Misar
Publikováno v:
Agronomy Journal. 108:141-150
Crested wheatgrass [Agropyron cristatum (L.) Gaertn., A. desertorum (Fisch. ex Link) Schult., and related taxa] often exists in near monoculture stands in the northern Great Plains. Introducing locally adapted yellow-flowered alfalfa [Medicago sativa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::05c2fe215d4028334b61c3507f88f7f6
https://doi.org/10.2134/agronj2015.0271
https://doi.org/10.2134/agronj2015.0271
Stand Persistence and Forage Yield of 11 Alfalfa (Medicago sativa) Populations in Semiarid Rangeland
Publikováno v:
Rangeland Ecology & Management. 68:79-85
Livestock producers in the Northern Great Plains value alfalfa ( Medicago sativa L.) for increasing forage production and quality in grazing lands. However, alfalfa persistence can be poor, especially under grazing. Demand exists for alfalfa that can
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5024eab8726a079a03cafe5e3e7606e8
https://doi.org/10.1016/j.rama.2014.12.012
https://doi.org/10.1016/j.rama.2014.12.012