Livestock grazing reinforces the competitive exclusion of small-bodied birds by large aggressive birds
نویسندگان
چکیده
منابع مشابه
Birds bias offspring sex ratio in response to livestock grazing.
Livestock grazing, which has a large influence on habitat structure, is associated with the widespread decline of various bird species across the world, yet there are few experimental studies that investigate how grazing pressure influences avian reproduction. We manipulated grazing pressure using a replicated field experiment, and found that the offspring sex ratio of a common upland passerine...
متن کاملImpacts of livestock grazing and tree clearing on birds of woodland and riparian habitats.
We investigated the impact of pastoral management on birds in subtropical grassy eucalypt woodland in southeastern Queensland, Australia, where the patterns of land management have made it possible to disentangle the effects of livestock grazing from those of tree clearing. We recorded changes in bird species composition, density, and relative abundance across two woodland habitat types (ripari...
متن کاملLivestock grazing and trampling of birds’ nests: an experiment using artificial nests
The purpose of this study is to experimentally determine the differences between four grazing treatments on the trampling of nests. Additionally, we examine to what extent the trampling probability of nests is higher close to a source of fresh water. We compare the trampling of artificial nests in five different grazing treatments in an experimental design. We use buried clay pigeon targets as ...
متن کاملThe Use of Thermal Ref’ugia by Two Small Desert Birds’
The extent to which birds select specific microsites during their diurnal activity and the thermal consequences of microsite selection during the day has received scant attention (DeWoskin 1980; Walsberg 1985, 1993: Weathers and Sullivan 1989). Most research has focused on microsite selection and the physiological consequences of occupancy of specific sites such as nocturnal roosts or nest site...
متن کاملFree-ranging birds Captive birds Songbirds Free-ranging birds Captive birds Waterfowl Free-ranging birds Captive birds Herons and allies Free-ranging birds Captive birds Pigeons and doves Free-ranging birds Captive birds
Cause Chlamydiosis refers to an infection with organisms of the genus Chlamydia sp., which are bacteria that live within animal cells. Chlamydia psittaci is the species generally associated with this disease in birds. The severity of the disease differs by the strain of C. psittaci and the susceptibility of different species of birds. As a result, chlamydiosis may range from an inapparent infec...
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ژورنال
عنوان ژورنال: Journal of Applied Ecology
سال: 2018
ISSN: 0021-8901
DOI: 10.1111/1365-2664.13078