@article{fdi:010076140, title = {{A} first assessment of megaherbivore subsidies in artificial waterholes in {H}wange {N}ational {P}ark, {Z}imbabwe}, author = {{H}ulot, {F}. {D}. and {P}rijac, {A}. and {L}efebvre, {J}ean-{P}ierre and {M}siteli-{S}humba, {S}. and {K}ativu, {S}.}, editor = {}, language = {{ENG}}, abstract = {{T}he transfer of terrestrial organic matter by terrestrial wild and domestic animals when they urinate and defecate directly in {S}avanna {R}ivers has already been studied. {H}owever, the eulittoral zone around waterholes receives organic matter during the dry season, which is diluted in the ecosystem when the waterholes returns to its wet season level. {I}n our study, we evaluated this pathway of subsidies in {H}wange {N}ational {P}ark, {Z}imbabwe, by estimating dung density in the eulittoral zone at the peak of the dry season. {W}e also collected dung from different herbivore species during the dry and wet seasons to measure nutrient content and estimate nitrogen and phosphorus leaching rates. {O}ur results show a decrease in carbon:phosphorus and nitrogen:phosphorus ratios in the dry season compared to the wet season. {D}uring the dry season, the deposition of total carbon, nitrogen, and phosphorus, mostly due to elephants, is estimated to be 8.65, 0.25, and 0.06g/m(2)/day, respectively, while the leaching rates of dissolved inorganic nitrogen and phosphorus are 1.52mg and 6.59mgm(2)/day, respectively. {N}o specific coloured dissolved organic matter signature for dung was identified. {W}e discuss the temporal dynamics of the subsidies as a distinctive feature of the system.}, keywords = {{E}utrophication ; {W}ater level fluctuation ; {W}ater management ; {B}rowsers ; {G}razers ; {ZIMBABWE} ; {ZONE} {SEMIARIDE}}, booktitle = {}, journal = {{H}ydrobiologia}, volume = {837}, numero = {1}, pages = {161--175}, ISSN = {0018-8158}, year = {2019}, DOI = {10.1007/s10750-019-3968-x}, URL = {https://www.documentation.ird.fr/hor/fdi:010076140}, }