Does resilience to fire confer resilience to grazing in savanna ant communities of Northern Australia?
نویسندگان
چکیده
Abstract Introduction Evolutionary traits acquired in response to one type of disturbance will potentially confer resilience other disturbances that have similar environmental impacts, even if the biota has no evolutionary history such disturbances. In grassy ecosystems impacts grazing important similarities those fire through removal grass biomass, and we hypothesise high frequent confers grazing. Aims We test this hypothesis by investigating highly fire-resilient ant communities a mesic Australian savanna, which not historically experienced levels mammalian Methods sampled ants using pitfall traps at Annaburroo Station seasonal tropics ten plot triplets, with each triplet representing no, low heavy Grazing had major impact on basal area perennial grasses cover bare ground. considered large (> 4 mm) only, tend be particularly sensitive disturbance. Results recorded 28 species ‘large’ from 14 genera. Neither richness nor overall composition varied significantly grazing, only eight most common responded Discussion Ant Annaburoo are resilient livestock The limited number relevant studies suggest savannas more generally higher than southern rangelands where frequency is relatively low. This supports our an Many required, but might related relation fire, pervasive remover plant biomass globally, Implications for insect conservation cattle dominant land-use savanna fauna richest Earth; findings therefore good news conservation. Such likely wide applicability fire-prone subject
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ژورنال
عنوان ژورنال: Journal of Insect Conservation
سال: 2022
ISSN: ['1572-9753', '1366-638X']
DOI: https://doi.org/10.1007/s10841-022-00426-y