Zobrazeno 1 - 10
of 115
pro vyhledávání: '"J. D. Macdonald"'
Autor:
Lucy A. Stephenson, Alastair J. D. Macdonald, Gertrude Seneviratne, Freddie Waites, Susan Pawlby
Publikováno v:
BJPsych Open, Vol 4, Pp 119-125 (2018)
BackgroundMother and Baby Units (MBUs) are usually preferred by patients and clinicians. Current provision is limited, although expansion is in progress. To ensure successful investment in services, outcome measurement is vital.AimsTo describe matern
Externí odkaz:
https://doaj.org/article/4c03b14b055a4236b10f0a0a41978f4f
Publikováno v:
Environmental Research Letters, Vol 8, Iss 3, p 035008 (2013)
Methane emissions from manure management represent an important mitigation opportunity, yet emission quantification methods remain crude and do not contain adequate detail to capture changes in agricultural practices that may influence emissions. Usi
Externí odkaz:
https://doaj.org/article/79c7be639c714821bcecd25a18f4cf67
Autor:
B. C. Liang, Brian McConkey, Denis A. Angers, A.J. VandenBygaart, Raymond L. Desjardins, J. D. MacDonald, Darrel Cerkowniak
Publikováno v:
Soil and Tillage Research. 198:104529
Accurate estimates of soil organic carbon (SOC) stock change as influenced by tillage practices are prerequisites to quantify the impact of mitigation measures on greenhouse gas emissions associated with crop production. In this study, we compiled SO
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08f8e51858104d96b4c5ac4eeb77d29b
https://doi.org/10.1016/j.still.2019.104529
https://doi.org/10.1016/j.still.2019.104529
Autor:
J. D. Macdonald, J. J. Hutchinson, Y. Karimi-Zindashty, X. P. C. Vergé, Devon E. Worth, Raymond L. Desjardins
Publikováno v:
The Journal of Agricultural Science. 150:556-569
SUMMARYEstimates of uncertainties are essential when comparing the greenhouse gas (GHG) emissions from a variety of sources. Monte Carlo Simulation (MCS) was applied to estimate the uncertainties in methane emissions and the methane emission intensit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c689f0673a50382eb976765fb7fb39d0
https://doi.org/10.1017/s002185961100092x
https://doi.org/10.1017/s002185961100092x
Autor:
Martin H. Chantigny, Normand Bertrand, J. D. MacDonald, P. Rochette, Edith Fallon, Denis A. Angers, Nicolas Tremblay, Léon E. Parent
Publikováno v:
European Journal of Soil Science. 61:186-196
Drainage and cultivation of organic soils often result in large nitrous oxide (N2O) emissions. The objective of this study was to assess the impacts of nitrogen (N) fertilizer on N2O emissions from a cultivated organic soil located south of Montreal,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::481cb66ffd737508cf8919b6a62f8e02
https://doi.org/10.1111/j.1365-2389.2009.01222.x
https://doi.org/10.1111/j.1365-2389.2009.01222.x
Publikováno v:
Nutrient Cycling in Agroecosystems. 86:225-229
Liquid hog manure (LHM) is a valuable source of nutrients for farm production. Long-term experimental plots that had received LHM applications of 0, 50, and 100 m3 ha−1 annually for 20 years were analyzed for total soil C, N and P storage. Applicat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::478e67d1294b50d1b41f6c8f84783099
https://doi.org/10.1007/s10705-009-9286-3
https://doi.org/10.1007/s10705-009-9286-3
Autor:
Martin H. Chantigny, D. Guilmette, Denis A. Angers, Marc-Olivier Gasser, J. D. MacDonald, Normand Bertrand, Denis Côté, P. Rochette, Léon E. Parent
Publikováno v:
Canadian Journal of Soil Science. 88:585-593
Efficient liquid manure application systems that minimize ammonia volatilization are required for use on perennial forage grasses. Ammonia volatilization was monitored using wind tunnels for 10 d after three pig slurry applications using four boom-mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::596e7c50cae021b2024f2ebd965d7a51
https://doi.org/10.4141/cjss07083
https://doi.org/10.4141/cjss07083
Autor:
J. D. Macdonald.
Publikováno v:
Ibis. 94:629-635
Summary. A case is made out for grouping the various forms of clapper lark in southern Africa, other than those included in the species Mirafra rufocinnumomea (olim fischeri), as a single polytypic species, Mirafra apiata Vieillot. Many of the descri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd924bac086b1c24e766410eb05ae6c8
https://doi.org/10.1111/j.1474-919x.1952.tb01876.x
https://doi.org/10.1111/j.1474-919x.1952.tb01876.x
Autor:
J. D. Macdonald.
Publikováno v:
Ibis. 101:330-334
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::886b3b3e481d8b3586d9aaa09c604619
https://doi.org/10.1111/j.1474-919x.1959.tb02389.x
https://doi.org/10.1111/j.1474-919x.1959.tb02389.x
Autor:
J. D. Macdonald.
Publikováno v:
Ibis. 95:70-73
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0258e754393e2ec286f37ff24f62e669
https://doi.org/10.1111/j.1474-919x.1953.tb00669.x
https://doi.org/10.1111/j.1474-919x.1953.tb00669.x