- Conference Proceedings2018Snow leopard and prey: Landscape-level distribution modeling & impacts of migratory livestock grazing in Symposium Assimilated Knowledges: an integrated approach to conservation in snow leopard landscapesConservation Asia, 2018, Society for Conservation Biology
- Conference Proceedings2017Migratory livestock grazing significantly impacts rangeland vegetation and wild-ungulate population in the Indian Trans-Himalaya12th International Mammalogical Congress, 2017. Perth, Australia
Intense livestock grazing outcompetes wild-ungulates in low-productivity rangelands. This is a long-standing and highly debated conservation problem globally. We examined impacts of migratory livestock grazing on Trans-Himalayan rangeland and Asiatic ibex, a wild-ungulate and primary prey of the endangered snow leopard. Vegetation and ibex were sampled in an intensely grazed (livestock density 63 sheep-goat/km2) and ungrazed areas, during spring (before-grazing), summer (during-grazing) and autumn (after-grazing). Proportionate to vegetated area, independent randomly laid 1mX1m plots were sampled for vegetation cover and biomass estimation (Cover: NUngrazed=237; NGrazed=127; Biomass: NUngrazed=119; NGrazed=64). Ibex density and young:adult-female ratios were estimated by repeatedly sampling 17 trails using double-observer method across both treatments for the three time periods and two consecutive years. Graminoid and herb biomass were significantly higher in ungrazed than grazed area (ANOVA; Graminoid: FTreatment=16.05; P=<0.001; Herb: FTreatment=22.75; P=< 0.001). Overall vegetation composition was dissimilar across ungrazed and grazed area (Morisita Index 0.18), however, palatable species composition was similar (Morisita Index 0.70). Biomass of palatable species was 2.25 times higher in ungrazed than grazed area. Total off-take of dry forage by migratory livestock from grazed pastures (61 km2) was 10,658 kgs km-2 over two months of grazing. Ibex density was 1.80-7.0 times higher in ungrazed than grazed area in 2015, while 2.45-4.7 times higher in ungrazed than grazed area during 2016. Ibex yearling:adult-female ratio was six times higher in ungrazed than grazed area. Significant reduction in forage availability lowered ibex density and yearling:adult-female ratios in grazed area, suggesting migratory livestock outcompetes ibex through exploitative competition.
- Conference Proceedings2016Impact of migratory livestock grazing on rangeland vegetation and wild-ungulate in the Indian Trans-Himalaya6th World Congress on Mountain Ungulates & 5th International Symposium on Mouflon
- Conference Proceedings2003Protected areas and beyond: wildlife conservation in the Trans-Himalaya.Bombay Natural History Society WORKSHOP 'A LOOK AT THREATENED SPECIES'. NOVEMBER 13, 2003, Bombay.