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Journal Article 1998

Autor: Hiernaux, Pierre H.Y.

The effects of grazing by livestock on plant species composition and spatial distribution have been studied at Sadoré, Niger. Herbaceous species were recorded in plots of increasing size from 1/64 to 1024 m2 in ten fallow plots subjected to five different grazing treatments over the previous thr...

Enlace original: https://cgspace.cgiar.org/handle/10568/33109

Investigación en Agricultura
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Hiernaux, Pierre H.Y. ,  [Effects of grazing on plant species composition and spatial distribution in rangelands of the Sahel] ,  Effects of grazing on plant species composition and spatial distribution in rangelands of the Sahel
Journal Article 2003

Autor: Jarlan, L. Mazzega, P. Mougin, E. Lavenu, F. Marty, G. Frison, P.L. Hiernaux, Pierre H.Y.

The West African Sahel rainfall regime is known for its spatio-temporal variability at different scales which has a strong impact on vegetation development. This study presents results of the combined use of a simple water balance model, a radiative transfer model and ERS scatterometer data to ...

Enlace original: https://cgspace.cgiar.org/handle/10568/33134

Investigación en Agricultura
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Jarlan, L. ,  Mazzega, P. ,  Mougin, E. ,  Lavenu, F. ,  Marty, G. ,  Frison, P.L. ,  Hiernaux, Pierre H.Y. ,  [Mapping of Sahelian vegetation parameters from ERS scatterometer data with an evolution strategies algorithm] ,  Mapping of Sahelian vegetation parameters from ERS scatterometer data with an evolution strategies algorithm
Journal Article 1998

Autor: Frison, P.L. Mougin, E. Hiernaux, Pierre H.Y.

This article presents an analysis of ERS-1 wind-scatterometer (WSC) data acquired over a region located in the northern Sahel. The considered period extends from January 1992 to December 1995, that is, covering four vegetation cycles. Experimental observations show that WSC responses at 45° of i...

Enlace original: https://cgspace.cgiar.org/handle/10568/33132

Investigación en Agricultura
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Frison, P.L. ,  Mougin, E. ,  Hiernaux, Pierre H.Y. ,  [Observations and interpretation of seasonal ERS-1 wind scatterometer data over northern Sahel (Mali)] ,  Observations and interpretation of seasonal ERS-1 wind scatterometer data over northern Sahel (Mali)
Journal Article 1994

Autor: Hiernaux, Pierre H.Y. Cisse, M.I. Diarra, L. Leeuw, P.N. de

Les auteurs analysent la saisonnalite de la feuillaison de 28 especes ligneuses saheliennes afin de caracteriser les disponibilites saisonnieres en feuillage fourrager ainsi que leurs variations interannuelles. Pour chacune des especes, des branchettes de meme calibre ont ete echantillonnees chaq...

Enlace original: https://cgspace.cgiar.org/handle/10568/33146

Investigación en Agricultura
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Hiernaux, Pierre H.Y. ,  Cisse, M.I. ,  Diarra, L. ,  Leeuw, P.N. de ,  [Fluctuations saisonnieres de la feuillaison des arbres et des buissons saheliens. Consequences pour la quantification des ressources fourrageres] ,  Fluctuations saisonnieres de la feuillaison des arbres et des buissons saheliens. Consequences pour la quantification des ressources fourrageres
Journal Article 2002

Autor: Sangare, M. Fernández Rivera, S. Hiernaux, Pierre H.Y. Bationo, B. André Pandey, V.S.

An experiment was conducted in 1996 and 1997 in semi-arid Niger, to determine the influence of supplementation (no supplement, millet bran + simple superphosphate, or millet bran + simple superphosphate + blood meal) for cattle and mulching (0 or 3 t ha-1 of Aristida sieberiana straw) on soil fer...

Enlace original: https://cgspace.cgiar.org/handle/10568/33083

Investigación en Agricultura
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Sangare, M. ,  Fernández Rivera, S. ,  Hiernaux, Pierre H.Y. ,  Bationo, B. André ,  Pandey, V.S. ,  [Influence of dry season supplementation for cattle on soil fertility and millet (Pennisetum glaucum L.) yield in a mixed crop/livestock production system of the Sahel] ,  Influence of dry season supplementation for cattle on soil fertility and millet (Pennisetum glaucum L.) yield in a mixed crop/livestock production system of the Sahel
Journal Article 2002

Autor: Jarlan, L. Mougin, E. Frison, P.L. Mazzega, P. Hiernaux, Pierre H.Y.

ERS wind scatterometer (WSC) time series are analyzed over different ecoclimatic regions of the African Sahel during the period 1991–1995. At 45° incidence angle, the strong seasonality of o time series can be directly linked to the successive wet and dry seasons. Moreover, the annual o dynami...

Enlace original: https://cgspace.cgiar.org/handle/10568/33133

Investigación en Agricultura
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Jarlan, L. ,  Mougin, E. ,  Frison, P.L. ,  Mazzega, P. ,  Hiernaux, Pierre H.Y. ,  [Analysis of ERS wind scatterometer time series over Sahel (Mali)] ,  Analysis of ERS wind scatterometer time series over Sahel (Mali)
Journal Article 2009-08-30

Autor: Hiernaux, Pierre H.Y. Diarra, L. Trichon, V. Mougin, E. Soumaguel, N. Baup, F.

The patterns of the changes in woody plant population densities, size and species composition is documented and discussed for 24 rangeland sites monitored from 1984 to 2006 in Gourma (Mali). The sites are sampled along the North–South bioclimatic gradient on each of the main soils and levels of g...

Enlace original: https://cgspace.cgiar.org/handle/10568/1914

Investigación en Agricultura
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Hiernaux, Pierre H.Y. ,  Diarra, L. ,  Trichon, V. ,  Mougin, E. ,  Soumaguel, N. ,  Baup, F. ,  [Woody plant population dynamics in response to climate changes from 1984 to 2006 in Sahel (Gourma, Mali)] ,  Woody plant population dynamics in response to climate changes from 1984 to 2006 in Sahel (Gourma, Mali)
Journal Article 2002

Autor: Sangare, M. Fernández Rivera, S. Hiernaux, Pierre H.Y. Pandey, V.S.

An experiment, was conducted in semi arid Niger to determine the influence of supplementation with groundnut cake (GC) )0 g kg 1, 2.5 g kg 1, 5 g kg 1, and 7.5 g kg 1 live weight (LW)) and P (0 g day`' and 3 g day 1 animal 1) on diet and millet stover intake and digestibility, sheep growth rate, ...

Enlace original: https://cgspace.cgiar.org/handle/10568/29705

Investigación en Agricultura
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Sangare, M. ,  Fernández Rivera, S. ,  Hiernaux, Pierre H.Y. ,  Pandey, V.S. ,  [Effect of groundnut cake and P on millet stover utilisation and nutrient excretion by sheep] ,  Effect of groundnut cake and P on millet stover utilisation and nutrient excretion by sheep
Journal Article 2000

Autor: Frison, P.L. Mougin, E. Jarlan, L. Karam, M.A. Hiernaux, Pierre H.Y.

ERS wind scatterometer (WSC) and SSNI/I data are compared for monitoring the seasonal variation of herbaceous vegetation over a sahelian region. Temporal evolution of polarization difference brightness temperatures derived from SSM/I data and WSC backscattering coefficient acquired at 45° of inci...

Enlace original: https://cgspace.cgiar.org/handle/10568/28681

Investigación en Agricultura
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Frison, P.L. ,  Mougin, E. ,  Jarlan, L. ,  Karam, M.A. ,  Hiernaux, Pierre H.Y. ,  [Comparison of ERS wind-scatterometer and SSM/I data for Sahelian vegetation monitoring] ,  Comparison of ERS wind-scatterometer and SSM/I data for Sahelian vegetation monitoring
Journal Article 1996

Autor: Hiernaux, Pierre H.Y. Turner, M.D.

1. growth and nutrient-uptake responses of annual rangeland to defoliation were studied at 13 sandy range sites located across the Sahelian zone of mali between 1977 and 1989. 34 clipping experiments (site-years) were conducted using identical treatment designs with respect to the timing and freq...

Enlace original: https://cgspace.cgiar.org/handle/10568/28870

Investigación en Agricultura
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Hiernaux, Pierre H.Y. ,  Turner, M.D. ,  [The effect of clipping on growth and nutrient uptake of Sahelian annual rangelands] ,  The effect of clipping on growth and nutrient uptake of Sahelian annual rangelands

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