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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

Investigación en Agricultura
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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
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 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 2008

Autor: Ogutu, J. Piepho, Hans-Peter Dublin, H.T. Bhola, N. Reid, Robin 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 Nin˜ o-Southern Oscillation (ENSO), using the Southern Oscil...

Enlace original: https://cgspace.cgiar.org/handle/10568/1746

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Ogutu, J. ,  Piepho, Hans-Peter ,  Dublin, H.T. ,  Bhola, N. ,  Reid, Robin S. ,  [Enso, rainfall, temperature and NDVI fluctuations in the Mara-Serengeti ecosystem] ,  Enso, rainfall, temperature and NDVI fluctuations in the Mara-Serengeti ecosystem
Journal Article 2006

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

Accurate estimation of wildlife population size is central to effective management and conservation but is notoriously difficult for rare and cryptic carnivores. Mark-recapture methods can reliably estimate the abundance of large carnivores but are sensitive to departures from the assumption of e...

Enlace original: https://cgspace.cgiar.org/handle/10568/33027

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Ogutu, J. ,  Piepho, Hans-Peter ,  Dublin, H.T. ,  Reid, Robin S. ,  Bhola, N. ,  [Application of mark-recapture methods to lions: Satisfying assumptions by using covariates to explain heterogeneity] ,  Application of mark-recapture methods to lions: Satisfying assumptions by using covariates to explain heterogeneity
Journal Article 2006

Autor: Ogutu, J. Bhola, N. Piepho, Hans-Peter Reid, Robin S.

Effective management and conservation of wildlife populations require reliable estimates of population size, which can be difficult and costly to obtain. We evaluated how precision in estimates of herd size and abundance varies with sample size and strip width using two field surveys and bootstra...

Enlace original: https://cgspace.cgiar.org/handle/10568/33026

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Ogutu, J. ,  Bhola, N. ,  Piepho, Hans-Peter ,  Reid, Robin S. ,  [Efficiency of strip- and line-transect surveys of African savanna mammals] ,  Efficiency of strip- and line-transect surveys of African savanna mammals
Journal Article 2014-06-13

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

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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

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

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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

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

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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

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

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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

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