Zobrazeno 1 - 10
of 137
pro vyhledávání: '"J. C. Onyango"'
Publikováno v:
Plant Diversity
Plant Diversity, Vol 41, Iss 3, Pp 198-205 (2019)
Plant Diversity, Vol 41, Iss 3, Pp 198-205 (2019)
Changes in rainfall regime and grazing pressure affect vegetation composition and diversity with ecological implications for savannahs. The savannah in East Africa has experienced increased livestock grazing and rainfall variability but the impacts a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3ae63260038d587281af81ea214daed6
https://doi.org/10.1016/j.pld.2019.04.005
https://doi.org/10.1016/j.pld.2019.04.005
Autor:
Daigo Makihara, Shuichi Asanuma, J. C. Onyango, Yoshiaki Inukai, Tran Thiem Thi, Akira Yamauchi, Mana Kano-Nakata, Daniel Makori Menge, Mayumi Kikuta
Publikováno v:
Plant Production Science, Vol 22, Iss 2, Pp 180-191 (2019)
This study evaluated the effect of three N fertilization levels 60 (low), 120 (medium), and 180 (high) kg N ha−1 and soil moisture content gradients created by a line-source sprinkler on the expression of plasticity in lateral root branching and dr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::72bfe3f4340aaa56e49095f9a0deead9
https://doaj.org/article/d795747575be489d827faa73bd843f62
https://doaj.org/article/d795747575be489d827faa73bd843f62
Publikováno v:
Environmental and Sustainability Indicators, Vol 9, Iss, Pp 100095-(2021)
Savanna ecosystems in Kenya are experiencing altered rainfall amount and increased grazing pressure. These environmental alterations occur simultaneously and impact on productivity and CO2 exchange of the savanna in unclear ways. Rainfall was manipul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c6779232583666ec9f313f268d70fe3
http://www.sciencedirect.com/science/article/pii/S2665972720300799
http://www.sciencedirect.com/science/article/pii/S2665972720300799
Autor:
Bernd Huwe, John Tenhunen, J. C. Onyango, Thomas Koellner, Dennis O. Otieno, Sebastian Arnhold
Publikováno v:
Soil and Tillage Research. 154:75-83
Changes in land use and management strongly affect the physical and chemical properties of soils and their ecological functions. Especially, regions in East Africa have experienced dramatic land use changes in the past, but the spatial variability of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::785a4c2dab87c22a4ac27ced23a73837
https://doi.org/10.1016/j.still.2015.06.021
https://doi.org/10.1016/j.still.2015.06.021
Autor:
Bora Lee, Bernd Huwe, Andreas Kolb, Sebastian Arnhold, Marianne Ruidisch, Daniel Osieko Okach, Joseph O. Ondier, J. C. Onyango, Dennis O. Otieno
Publikováno v:
Plant Ecology. 216:1441-1456
Factors governing the dynamics between woody and herbaceous vegetation in the savanna are of ecological interest since they determine ecosystem productivity and stability. Field measurements were conducted in a humid savanna in the Lambwe valley, wes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e56e62e94d26a2f967cdc946999b0bfe
https://doi.org/10.1007/s11258-015-0523-3
https://doi.org/10.1007/s11258-015-0523-3
Publikováno v:
Applied Ecology and Environmental Research. 12:63-82
Strong seasonal variability in African carbon source/sink relationship is considered the continent's most significant contribution to the global carbon cycle. Alternating dry and wet periods dictate ecosystem carbon exchange and productivity of tropi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c49778c2ed19085c99da3ca39d758cb
https://doi.org/10.15666/aeer/1201_063082
https://doi.org/10.15666/aeer/1201_063082
Publikováno v:
Journal of Environmental Protection. :877-880
Soil erosion by water resulting in gully formation is a common occurrence in western Kenya. Establishment of local and sustainable countermeasures to prevent gully development/expansion in western Kenya is an urgent issue. This study presents the pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0259a376611a9f40d6c71d55e79dc018
https://doi.org/10.4236/jep.2013.49102
https://doi.org/10.4236/jep.2013.49102
Publikováno v:
African Journal of Food, Agriculture, Nutrition and Development; Vol 7, No 4 (2007); 1-16
African nightshades play an important role in meeting the nutritional needs of rural households, and are reported as being particularly rich in protein, vitamin A, iron and calcium. Nightshades are among three top priority African indigenous vegetabl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::97f71a13eab47546e72a358d68b3b433
https://www.ajol.info/index.php/ajfand/article/view/136149
https://www.ajol.info/index.php/ajfand/article/view/136149
Publikováno v:
Journal of Plant Ecology. 6:286-297
Aims Humid savannas, as a result of high precipitation amounts, are highly productive. They are also hotspots for land use change and potential sources of carbon dioxide (CO 2) due to the large soil carbon (C) stocks. Understanding how ecosystem CO 2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::438886778d76ea8be0e3da44d95f9384
https://doi.org/10.1093/jpe/rts038
https://doi.org/10.1093/jpe/rts038
Publikováno v:
Agriculture and Biology Journal of North America. 3:93-104
Food shortage is a major problem in sub Saharan Africa as population increases. Over 89% of Kenyans are food poor and are malnourished especially in rural areas. NERICA (New Rice for Africa) are high yielding rainfed rice varieties with early maturit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::843bdb4a9122c6bf306ebb5a8c652d4f
https://doi.org/10.5251/abjna.2012.3.3.93.104
https://doi.org/10.5251/abjna.2012.3.3.93.104