Contrasting impacts of grass species on nitrogen cycling in a grazed Sudanian savanna
| Parent link: | Acta Oecologica: Scientific Journal Vol. 63.— 2015.— [P. 8-15] |
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| Corporate Author: | |
| Other Authors: | , , , , , , , |
| Summary: | Title screen We investigated the impact of perennial and annuals grass species on nitrogen cycling in a Sudanian savanna of Burkina Faso. We also analysed how the local context in terms of grazing and soil properties modifies these impacts. We selected four plots differing both by the intensity of grazing by cattle and soil depth, and used soil and grass biomass 15N as integrative indicators of N cycle. If perennials are able to foster a more efficient nitrogen cycling there should be lower 15N abundances in their biomass and soil. If soil depth and cattle pressure significantly modify nitrogen fluxes, soil depth and cattle pressure should influence 15N signatures. Our results suggest that perennial grasses are more conservative for nitrogen (inhibition of nitrification, less leaching via a perennial root system, slower cycling). Режим доступа: по договору с организацией-держателем ресурса |
| Published: |
2015
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1016/j.actao.2015.01.002 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=644759 |