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Journal Article 2014-06-13

Herbivore dynamics and range contraction in Kajiado County Kenya: Climate and land use changes, population pressures, governance, policy and human-wildlife conflicts

Autor: Ogutu, Joseph O. Piepho, Hans-Peter Said, Mohammed Yahya Kifugo, S.C.

Wildlife populations are declining severely in many protected areas and unprotected pastoral areas of Africa. Rapid large-scale land use changes, poaching, climate change, rising population pressures, governance, policy, economic and socio-cultural transformations and competition with livestock a...

Enlace original: https://cgspace.cgiar.org/handle/10568/52352

Investigación en Agricultura

CLIMATE CHANGE

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Ogutu, Joseph O. , Piepho, Hans-Peter , Said, Mohammed Yahya , Kifugo, S.C. , [Herbivore dynamics and range contraction in Kajiado County Kenya: Climate and land use changes, population pressures, governance, policy and human-wildlife conflicts] , Herbivore dynamics and range contraction in Kajiado County Kenya: Climate and land use changes, population pressures, governance, policy and human-wildlife conflicts

Journal Article 2012

Human-hippo conflicts in Kenya during 1997-2008: Vulnerability of a megaherbivore to anthropogenic land use changes

Autor: Kanga, E.M. Ogutu, Joseph O. Piepho, Hans-Peter Olff, H.

Rising human population and the associated demand for more land, water and other natural resources are intensifying conflicts between people and wildlife worldwide. We investigated the nature, intensity, seasonality, spatial and temporal patterns in human–hippo conflict incidences reported from w...

Enlace original: https://cgspace.cgiar.org/handle/10568/35291

Investigación en Agricultura

LIVESTOCK

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Kanga, E.M. , Ogutu, Joseph O. , Piepho, Hans-Peter , Olff, H. , [Human-hippo conflicts in Kenya during 1997-2008: Vulnerability of a megaherbivore to anthropogenic land use changes] , Human-hippo conflicts in Kenya during 1997-2008: Vulnerability of a megaherbivore to anthropogenic land use changes

Journal Article 2013-07-11

Changing wildlife populations in Nairobi national park and adjoining Athi-Kaputiei plains: Collapse of the migratory Wildebeest

Autor: Ogutu, Joseph O. Owen-Smith, N. Piepho, Hans-Peter Said, Mohammed Yahya Kifugo, S.C. Reid, Robin S. Gichohi, H. Kahumbu, P. Andanje, S.

There is mounting concern about declines in wildlife populations in many protected areas in Africa. Migratory ungulates are especially vulnerable to impacts of changing land use outside protected areas on their abundance. Range compression may compromise the capacity of migrants to cope with clim...

Enlace original: https://cgspace.cgiar.org/handle/10568/34487

Investigación en Agricultura

LAND MANAGEMENT

ENVIRONMENT

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Ogutu, Joseph O. , Owen-Smith, N. , Piepho, Hans-Peter , Said, Mohammed Yahya , Kifugo, S.C. , Reid, Robin S. , Gichohi, H. , Kahumbu, P. , Andanje, S. , [Changing wildlife populations in Nairobi national park and adjoining Athi-Kaputiei plains: Collapse of the migratory Wildebeest] , Changing wildlife populations in Nairobi national park and adjoining Athi-Kaputiei plains: Collapse of the migratory Wildebeest

Journal Article 2011-05-27

A comparison of random forests, boosting and support vector machines for genomic selection

Autor: Ogutu, Joseph O. Piepho, Hans-Peter Schulz-Streeck, T.

Genomic selection (GS) involves estimating breeding values using molecular markers spanning the entire genome. Accurate prediction of genomic breeding values (GEBVs) presents a central challenge to contemporary plant and animal breeders. The existence of a wide array of marker-based approaches fo...

Enlace original: https://cgspace.cgiar.org/handle/10568/3795

Investigación en Agricultura

FORESTRY

GENETICS

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Ogutu, Joseph O. , Piepho, Hans-Peter , Schulz-Streeck, T. , [A comparison of random forests, boosting and support vector machines for genomic selection] , A comparison of random forests, boosting and support vector machines for genomic selection

Journal Article 2008-04-14

Rainfall influences on ungulate population abundance in the Mara-Serengeti ecosystem

Autor: Ogutu, Joseph O. Peipho, H.P. Dublin, H.T. Bhola, N. Reid, Robin S.

1. Rainfall is the prime climatic factor underpinning the dynamics of African savanna ungulates,but no study has analysed its influence on the abundance of these ungulates at monthly to multiannual time scales. 2. We report relationships between rainfall and changes in age- and sex-structured ...

Enlace original: https://cgspace.cgiar.org/handle/10568/1270

Investigación en Agricultura

RAIN

UNGULATES

CLIMATE CHANGE

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Ogutu, Joseph O. , Peipho, H.P. , Dublin, H.T. , Bhola, N. , Reid, Robin S. , [Rainfall influences on ungulate population abundance in the Mara-Serengeti ecosystem] , Rainfall influences on ungulate population abundance in the Mara-Serengeti ecosystem

Journal Article 2007-08-01

Simple State space models in a mixed model framework

Autor: Piepho, Hans-Peter Ogutu, Joseph O.

State-space models play a central role in time series analysis. Biological time series, which present trend, seasonal, and cyclic fluctuations, can be well described by such models. In addition, biological experiments and surveys often have a relatively complex design structure calling for specia...

Enlace original: https://cgspace.cgiar.org/handle/10568/1291

Investigación en Agricultura

MODELS

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Piepho, Hans-Peter , Ogutu, Joseph O. , [Simple State space models in a mixed model framework] , Simple State space models in a mixed model framework

Journal Article 2015-07-01

Trends and spatial variation in water and land footprints of meat and milk production systems in Kenya

Autor: Bosire, Caroline K. Ogutu, Joseph O. Said, Mohammed Yahya Krol, M.S. Leeuw, Jan de Hoekstra, A.Y.

Global consumption of livestock products is increasing steadily due to human population growth, poverty reduction and dietary changes raising the demand for already scarce freshwater and land resources. Here, we analyze the changes associated with direct and indirect use of freshwater and land fo...

Enlace original: https://cgspace.cgiar.org/handle/10568/63492

Investigación en Agricultura

WATER

ANIMAL PRODUCTION

LIVESTOCK

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Bosire, Caroline K. , Ogutu, Joseph O. , Said, Mohammed Yahya , Krol, M.S. , Leeuw, Jan de , Hoekstra, A.Y. , [Trends and spatial variation in water and land footprints of meat and milk production systems in Kenya] , Trends and spatial variation in water and land footprints of meat and milk production systems in Kenya

Journal Article 2010-02-15

Influence of driver ant swarm raids on earthworm prey densities in the Mount Kenya forest: implications for prey population dynamics and colony migrations

Autor: Schöning, C. Csuzdi, C. Kinuthia, W. Ogutu, Joseph O.

African driver ants are nomadic social mesopredators feeding on a highly diverse array of prey species at different trophic levels. Colonies of certain driver ant species have a biomass which can equal that of medium-sized mammalian carnivores and the ultimate cause of their nomadic life-style is...

Enlace original: https://cgspace.cgiar.org/handle/10568/465

Investigación en Agricultura

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Schöning, C. , Csuzdi, C. , Kinuthia, W. , Ogutu, Joseph O. , [Influence of driver ant swarm raids on earthworm prey densities in the Mount Kenya forest: implications for prey population dynamics and colony migrations] , Influence of driver ant swarm raids on earthworm prey densities in the Mount Kenya forest: implications for prey population dynamics and colony migrations

Journal Article 2019-04-02

Livestock-wealth inequalities and uptake of crop cultivation among the Maasai of Kenya and Tanzania

Autor: Nkedianye, D.K. Ogutu, Joseph O. Said, Mohammed Yahya Kifugo, S.C. Leeuw, Jan de Gardingen, P.V. Reid, Robin S.

Enlace original: https://cgspace.cgiar.org/handle/10568/106574

Investigación en Agricultura

GENDER

LIVELIHOODS

LIVESTOCK

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Nkedianye, D.K. , Ogutu, Joseph O. , Said, Mohammed Yahya , Kifugo, S.C. , Leeuw, Jan de , Gardingen, P.V. , Reid, Robin S. , [Livestock-wealth inequalities and uptake of crop cultivation among the Maasai of Kenya and Tanzania] , Livestock-wealth inequalities and uptake of crop cultivation among the Maasai of Kenya and Tanzania

Journal Article 2016-09-27

Extreme wildlife declines and concurrent increase in livestock numbers in Kenya: What are the causes?

Autor: Ogutu, Joseph O. Piepho, Hans-Peter Said, Mohammed Yahya Ojwang, G.O. Njino, L.W. Kifugo, S.C. Wargute, P.W.

There is growing evidence of escalating wildlife losses worldwide. Extreme wildlife losses have recently been documented for large parts of Africa, including western, Central and Eastern Africa. Here, we report extreme declines in wildlife and contemporaneous increase in livestock numbers in Keny...

Enlace original: https://cgspace.cgiar.org/handle/10568/77705

Investigación en Agricultura

LIVESTOCK

WILDLIFE

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Ogutu, Joseph O. , Piepho, Hans-Peter , Said, Mohammed Yahya , Ojwang, G.O. , Njino, L.W. , Kifugo, S.C. , Wargute, P.W. , [Extreme wildlife declines and concurrent increase in livestock numbers in Kenya: What are the causes?] , Extreme wildlife declines and concurrent increase in livestock numbers in Kenya: What are the causes?

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