Zobrazeno 1 - 10
of 85
pro vyhledávání: '"W.A. Dugas"'
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
Publikováno v:
Global Change Biology. 12:1390-1399
Respiration (carbon efflux) by terrestrial ecosystems is a major component of the global carbon (C) cycle, but the response of C efflux to atmospheric CO2 enrichment remains uncertain. Respiration may respond directly to an increase in the availabili
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ecde6a8ff6cc453da58408517dd316d9
https://doi.org/10.1111/j.1365-2486.2006.01187.x
https://doi.org/10.1111/j.1365-2486.2006.01187.x
Publikováno v:
Hydrological Processes. 20:3245-3259
In this paper, we examine the linkage between woody plants and the water budget for three important woody plant communities in Texas, USA: saltcedar (Tamarix chinensis, Tamarix ramosissima), Ashe juniper (Juniperus ashei Buchholz), and mesquite (Pros
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cdc1541f60af9488c68db0a9350a7cb6
https://doi.org/10.1002/hyp.6330
https://doi.org/10.1002/hyp.6330
Publikováno v:
Journal of Arid Environments. 60:423-436
We measured CO2 and evapotranspiration (ET) fluxes above a Chihuahuan desert grassland from 1996 through 2001. Averaged across six years, this ecosystem was a source (positive flux) of CO2 in every month. Over that period, sustained periods of carbon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6b390bdee70112c1f038452e77e70851
https://doi.org/10.1016/j.jaridenv.2004.06.001
https://doi.org/10.1016/j.jaridenv.2004.06.001
Autor:
Bert G. Drake, David P. Johnson, Bruce A. Hungate, C. R. Hinkle, Graham J. Hymus, Jiahong Li, W.A. Dugas
Publikováno v:
Global Change Biology. 9:96-105
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e08c279265420ab4d078134dc5d9dc6a
https://doi.org/10.1046/j.1365-2486.2003.00557.x
https://doi.org/10.1046/j.1365-2486.2003.00557.x
Publikováno v:
Global Change Biology. 7:747-754
Increasing atmospheric CO2 concentrations may have a profound effect on the structure and function of plant communities. A previously grazed, central Texas grassland was exposed to a 200-µmol mol−1 to 550 µmol mol−1 CO2 gradient from March to m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d25171589a096008cf16f69a2c4d108
https://doi.org/10.1046/j.1354-1013.2001.00445.x
https://doi.org/10.1046/j.1354-1013.2001.00445.x
Autor:
W.A. Dugas, A.B Frank
Publikováno v:
Agricultural and Forest Meteorology. 108:317-326
Temperate grassland ecosystems are an important component of the global carbon (C) cycle. The Bowen ratio/energy balance (BREB) technique was used to measure CO 2 fluxes over a mixed-grass prairie at Mandan, ND from 24 April to 26 October in 1996–1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f230d84f4831a51eb76a4451801f35b3
https://doi.org/10.1016/s0168-1923(01)00238-6
https://doi.org/10.1016/s0168-1923(01)00238-6
Autor:
W.A. Dugas, P.C. Mielnick
Publikováno v:
Soil Biology and Biochemistry. 32:221-228
Soils are an important component of the global carbon budget due to their large C storage capacity and the ability to replenish atmospheric C via soil surface CO2 flux. Our objectives were to quantify year-round soil CO2–C fluxes in a tallgrass pra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b4e3ee34a524bb541845ae4bf7efeaed
https://doi.org/10.1016/s0038-0717(99)00150-9
https://doi.org/10.1016/s0038-0717(99)00150-9
Publikováno v:
Agricultural and Forest Meteorology. 93:171-183
Orchards and many other land surface types have vegetation that does not completely cover the underlying ground surface. For these land surfaces there are at least two distinct and interacting surface components, the overstorey/canopy and the underst
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb10a6ac3b1fc05e2abfb05c251847fe
https://doi.org/10.1016/s0168-1923(98)00114-2
https://doi.org/10.1016/s0168-1923(98)00114-2
Publikováno v:
Agricultural and Forest Meteorology. 93:121-139
The Bowen ratio/energy balance (BREB) method was used to measure 30 min water vapor and carbon dioxide (CO 2 ) fluxes over three fields dominated by different C 4 grasses (bermudagrass, tallgrass native prairie, and sorghum) at the Blackland Research
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f8901bba8b29a98dd630bf2caa092de
https://doi.org/10.1016/s0168-1923(98)00118-x
https://doi.org/10.1016/s0168-1923(98)00118-x