Spatial heterogeneity in Sahelian rangelands and resilience to drought and grazing
In studies of 25 rangeland sites selected along the S.-N. bioclimatic gradient and on the main soil types in the Gourma (Sahel, Mali), herbage cover, standing mass and botanical composition were measured in relation to seasonality of grazing and grazing intensity. When different sites were compared,...
| Main Author: | |
|---|---|
| Format: | Conference Paper |
| Language: | Inglés |
| Published: |
Society of Range Management
1996
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/51083 |
| _version_ | 1855532307774963712 |
|---|---|
| author | Hiernaux, Pierre H.Y. |
| author_browse | Hiernaux, Pierre H.Y. |
| author_facet | Hiernaux, Pierre H.Y. |
| author_sort | Hiernaux, Pierre H.Y. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | In studies of 25 rangeland sites selected along the S.-N. bioclimatic gradient and on the main soil types in the Gourma (Sahel, Mali), herbage cover, standing mass and botanical composition were measured in relation to seasonality of grazing and grazing intensity. When different sites were compared, variability in herbage and spatial heterogeneity were positively correlated. Spatial heterogeneity within a site increased after droughts indicating that compensation between temporal and spatial variations occurred. It was considered that drought-promoted heterogeneity may help the resilience of the vegetation by preserving spots of luxuriant growth. Grazing decreased spatial heterogeneity, however the evenness fostered by grazing did not increase vegetation sensitivity to drought. It is suggested that this was because of the convergence in plant adaptation to grazing and arid conditions. |
| format | Conference Paper |
| id | CGSpace51083 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1996 |
| publishDateRange | 1996 |
| publishDateSort | 1996 |
| publisher | Society of Range Management |
| publisherStr | Society of Range Management |
| record_format | dspace |
| spelling | CGSpace510832021-08-09T04:48:11Z Spatial heterogeneity in Sahelian rangelands and resilience to drought and grazing Hiernaux, Pierre H.Y. spatial distribution grasslands rangelands drought grazing biodiversity vegetation arid zones In studies of 25 rangeland sites selected along the S.-N. bioclimatic gradient and on the main soil types in the Gourma (Sahel, Mali), herbage cover, standing mass and botanical composition were measured in relation to seasonality of grazing and grazing intensity. When different sites were compared, variability in herbage and spatial heterogeneity were positively correlated. Spatial heterogeneity within a site increased after droughts indicating that compensation between temporal and spatial variations occurred. It was considered that drought-promoted heterogeneity may help the resilience of the vegetation by preserving spots of luxuriant growth. Grazing decreased spatial heterogeneity, however the evenness fostered by grazing did not increase vegetation sensitivity to drought. It is suggested that this was because of the convergence in plant adaptation to grazing and arid conditions. 1996 2014-10-31T06:22:04Z 2014-10-31T06:22:04Z Conference Paper https://hdl.handle.net/10568/51083 en Limited Access Society of Range Management |
| spellingShingle | spatial distribution grasslands rangelands drought grazing biodiversity vegetation arid zones Hiernaux, Pierre H.Y. Spatial heterogeneity in Sahelian rangelands and resilience to drought and grazing |
| title | Spatial heterogeneity in Sahelian rangelands and resilience to drought and grazing |
| title_full | Spatial heterogeneity in Sahelian rangelands and resilience to drought and grazing |
| title_fullStr | Spatial heterogeneity in Sahelian rangelands and resilience to drought and grazing |
| title_full_unstemmed | Spatial heterogeneity in Sahelian rangelands and resilience to drought and grazing |
| title_short | Spatial heterogeneity in Sahelian rangelands and resilience to drought and grazing |
| title_sort | spatial heterogeneity in sahelian rangelands and resilience to drought and grazing |
| topic | spatial distribution grasslands rangelands drought grazing biodiversity vegetation arid zones |
| url | https://hdl.handle.net/10568/51083 |
| work_keys_str_mv | AT hiernauxpierrehy spatialheterogeneityinsahelianrangelandsandresiliencetodroughtandgrazing |