Surviving with a resident despot: do revegetated patches act as refuges from the effects of the noisy miner (Manorina melanocephala) in a highly fragmented landscape?

摘要: Aim To provide, through a large-scale long-term field study, an empirical evaluation of the extent to which revegetated patches act as refuges for woodland bird species in face enhanced abundance native despotic highly fragmented landscape. Location South-west slopes, New South Wales, Australia. Methods Birds were surveyed using point counts over 9-year period. Colonization/extinction dynamics local populations modelled multiple-season occupancy models. Results We show how spread noisy miner (Manorina melanocephala), indirect effect habitat loss and fragmentation, is now main driver distribution patterns, affecting 65% studied species, including 10 conservation concern. Noisy miners both increased risk that birds would become extinct prevented colonizing new patches. We discovered restoration plantings, despite having low abundance, rarely acted refuge species: only 6 42 one concern, showed positive response plantings. Instead, colonized or persisted more regrowth old growth sites where was relatively low. Main conclusions Despite major effort replanted vegetation several decades, majority our target preferred particularly with miner. Our study actions such aimed at reversing effects fragmentation should be preceded by careful threat-mitigation prioritization considering, particular, impact invasive species. results support calls manage undertaking will reduce their numbers, culling.