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Journal Article 2011-09-1

Autor: Ogutu, Joseph O. Owen-Smith, N. Piepho, Hans-Peter Said, Mohammed Yahya

Populations of many wild ungulate species in Africa are in decline largely because of land-use changes and other human activities. Analyses that document these declines and advance our understanding of their underlying causes are fundamental to effective management and conservation of wild ungula...

Enlace original: https://cgspace.cgiar.org/handle/10568/3775

Investigación en Agricultura
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Ogutu, Joseph O. ,  Owen-Smith, N. ,  Piepho, Hans-Peter ,  Said, Mohammed Yahya ,  [Continuing wildlife population declines and range contraction in the Mara region of Kenya during 1977-2009] ,  Continuing wildlife population declines and range contraction in the Mara region of Kenya during 1977-2009
Journal Article 2008

Autor: Ogutu, Joseph O. Piepho, Hans-Peter Dublin, H.T. Bhola, N. Reid, S.

Understanding long-term climatic variability is basic to wise management and conservation of biodiversity. We analysed temporal variations in the local rainfall, temperature, Normalized Difference Vegetation Index and the hemispheric El Niño-Southern Oscillation (ENSO), using the Southern Oscilla...

Enlace original: https://cgspace.cgiar.org/handle/10568/29982

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Ogutu, Joseph O. ,  Piepho, Hans-Peter ,  Dublin, H.T. ,  Bhola, N. ,  Reid, S. ,  [El Niño-Southern Oscillation, rainfall, temperature and normalized difference vegetation index fluctuations in the Mara-Serengeti ecosystem] ,  El Niño-Southern Oscillation, rainfall, temperature and normalized difference vegetation index fluctuations in the Mara-Serengeti ecosystem
Journal Article 2003

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

This paper considers inference for the break point in the segmented regression or piece-wise regression model. Standard likelihood theory does not apply because the break point is absent under the null hypothesis. We use results by DAVIES for this type of non-standard set-up [Biometrika 64 (1977)...

Enlace original: https://cgspace.cgiar.org/handle/10568/35339

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Piepho, Hans-Peter ,  Ogutu, Joseph O. ,  [Inference for the break point in segmented regression with application to longitudinal data] ,  Inference for the break point in segmented regression with application to longitudinal data
Journal Article 2015-08-21

Autor: Ogutu, Joseph O. Owen-Smith, N. Piepho, Hans-Peter

In high temperate latitudes, ungulates generally give birth within a narrow time window when conditions are optimal for offspring survival in spring or early summer, and use changing photoperiod to time conceptions so as to anticipate these conditions. However, in low tropical latitudes day lengt...

Enlace original: https://cgspace.cgiar.org/handle/10568/72679

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Ogutu, Joseph O. ,  Owen-Smith, N. ,  Piepho, Hans-Peter ,  [How rainfall variation influences reproductive patterns of African Savanna ungulates in an equatorial region where photoperiod variation is absent] ,  How rainfall variation influences reproductive patterns of African Savanna ungulates in an equatorial region where photoperiod variation is absent
Report 2016-06-27

Autor: Bedelian, Claire Ogutu, Joseph O.
Enlace original: https://cgspace.cgiar.org/handle/10568/76544

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Bedelian, Claire ,  Ogutu, Joseph O. ,  [Trade-offs for climate-resilient pastoral livelihoods in wildlife conservancies in the Mara Ecosystem, Kenya: Small Grants Programme] ,  Trade-offs for climate-resilient pastoral livelihoods in wildlife conservancies in the Mara Ecosystem, Kenya: Small Grants Programme
Journal Article 2010-05-15

Autor: Ogutu, Joseph O. Piepho, Hans-Peter Reid, Robin S. Rainy, M.E. Kruska, R.L. Worden, J.S. Nyabenge, M. Hobbs, N.T.

Sustaining wildlife and pastoral communities in savannas worldwide depends on understanding how landscapes provide for their needs. The composite effects of multiple forces shape herbivore distribution in savannas. We propose a model describing the distribution of animal density along two resourc...

Enlace original: https://cgspace.cgiar.org/handle/10568/2098

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Ogutu, Joseph O. ,  Piepho, Hans-Peter ,  Reid, Robin S. ,  Rainy, M.E. ,  Kruska, R.L. ,  Worden, J.S. ,  Nyabenge, M. ,  Hobbs, N.T. ,  [Large herbivore responses to water and settlements in savannas] ,  Large herbivore responses to water and settlements in savannas
Journal Article 2011-05-15

Autor: Kanga, E.M. Ogutu, Joseph O. Olff, H. Santema, P.

The common hippopotamus Hippopotamus amphibius can significantly influence the dynamics of ecosystems and engender serious conflicts with people but, in Kenya, one of the species strongholds, it has been little studied or monitored. We surveyed the hippopotamus population in the Masai Mara Nation...

Enlace original: https://cgspace.cgiar.org/handle/10568/3778

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Kanga, E.M. ,  Ogutu, Joseph O. ,  Olff, H. ,  Santema, P. ,  [Population trend and distribution of the Vulnerable common hippopotamus Hippopotamus amphibius in the Mara Region of Kenya] ,  Population trend and distribution of the Vulnerable common hippopotamus Hippopotamus amphibius in the Mara Region of Kenya
Journal Article 2011-04-15

Autor: Mogensen, N.L. Ogutu, Joseph O. Dabelsteen, T.

Contraction of their historic geographic ranges and conflicts with humans underpins declines in large carnivore populations worldwide. These declines, which characterize pastoral systems where carnivores, people and livestock live in close contact, may be paralleled by changes in carnivore behavi...

Enlace original: https://cgspace.cgiar.org/handle/10568/3779

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Mogensen, N.L. ,  Ogutu, Joseph O. ,  Dabelsteen, T. ,  [The effects of pastoralism and protection on lion behaviour, demography and space use in the Mara Region of Kenya] ,  The effects of pastoralism and protection on lion behaviour, demography and space use in the Mara Region of Kenya
Journal Article 2012-11-15

Autor: Bhola, N. Ogutu, Joseph O. Said, Mohammed Yahya Piepho, Hans-Peter Olff, H.
Enlace original: https://cgspace.cgiar.org/handle/10568/35657

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Bhola, N. ,  Ogutu, Joseph O. ,  Said, Mohammed Yahya ,  Piepho, Hans-Peter ,  Olff, H. ,  [The distribution of large herbivore hotspots in relation to environmental and anthropogenic correlates in the Mara region of Kenya] ,  The distribution of large herbivore hotspots in relation to environmental and anthropogenic correlates in the Mara region of Kenya
Journal Article 2011-07-15

Autor: Msoffe, F.U. Said, Mohammed Yahya Ogutu, Joseph O. Kifugo, S.C. Leeuw, Jan de Gardingen, P. van Reid, Robin S.

Spatially explicit models are becoming increasingly important tools for simulating land-use change. In this study, we formulated and tested models that incorporated spatial correlates of agricultural expansion and used them to predict local- and landscape-scale patterns of agricultural land-use c...

Enlace original: https://cgspace.cgiar.org/handle/10568/5492

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Msoffe, F.U. ,  Said, Mohammed Yahya ,  Ogutu, Joseph O. ,  Kifugo, S.C. ,  Leeuw, Jan de ,  Gardingen, P. van ,  Reid, Robin S. ,  [Spatial correlates of land-use changes in the Maasai-Steppe of Tanzania: Implications for conservation and environmental planning] ,  Spatial correlates of land-use changes in the Maasai-Steppe of Tanzania: Implications for conservation and environmental planning

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