干旱区生态环境知识资源中心(Arid): Macropods, feral goats, sheep and cattle. 2. Equivalency in what and where they eat

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DOI	10.1071/RJ19059
	Macropods, feral goats, sheep and cattle. 2. Equivalency in what and where they eat
	Pahl, L.
通讯作者	Pahl, L (corresponding author), Queensland Dept Agr & Fisheries, POB 102, Toowoomba, Qld 4350, Australia.
来源期刊	RANGELAND JOURNAL
ISSN	1036-9872
EISSN	1834-7541
出版年	2019
卷号	41 期号:6 页码:519-533
英文摘要	The extent to which sheep, cattle, feral goats, red kangaroos, western grey kangaroos, euros and eastern grey kangaroos are equivalent in their use of the Australian southern rangelands is partly dependent on the extent to which their diets and foraging areas overlap. These herbivores all eat large amounts of green annual grasses, ephemeral forbs and the green leaf of perennial grasses when they are available. Overlap in use of these forages by all seven herbivores is concurrent and high. As the abundance of these preferred forages declines, sheep, cattle and feral goats consume increasing amounts of mature perennial grasses and chenopod and non-chenopod perennial forbs. Red kangaroos and western grey kangaroos continue to graze mature perennial grasses longer than sheep, cattle and feral goats, and only switch to perennial forbs when the quantity and quality of perennial grasses are poor. Consequently, overlap in use of perennial forbs by sheep, cattle, feral goats, red kangaroos and western grey kangaroos is sequential and moderately high. When palatable perennial forbs are eaten out, the diets of all herbivores except feral goats comprise predominantly dry perennial grass, and overlap is again concurrent and high. In comparison, feral goats have higher preferences for the browse of a wide range of shrubs and trees, and switch to these much earlier than the other herbivores. When perennial grasses and perennial forbs become scarce, sheep, feral goats and cattle browse large shrubs and trees, and overlap is sequential and high. If climatic conditions remain dry, then red and western grey kangaroos will also browse large shrubs and trees, but overlap between them, sheep, cattle and goats is sequential and low. In contrast to the other herbivores, the diets of euros and eastern grey kangaroos are comprised predominantly of perennial grasses, regardless of climatic conditions. As for diet composition, concurrent overlap in foraging distributions of sheep, cattle, feral goats and the four species of macropods is often low. However, over periods of several months to two or three years, as climatic conditions change, overlap in foraging distributions is sequential and high. While equivalency in what and where these herbivores eat is not quantifiable, it appears to be high overall. This is particularly so for perennial grass, which is the dominant forage for herbivores in the southern rangelands.
英文关键词	diet composition diet overlap food preferences grazing distribution
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000526523400006
WOS关键词	EUCALYPTUS-POPULNEA WOODLAND ; DIETARY NICHE BREADTHS ; EASTERN GREY-KANGAROO ; AUSTRALIAN ARID ZONE ; FIELD METABOLIC-RATE ; EUROS M-ROBUSTUS ; RED KANGAROOS ; OVIS-ARIES ; FULIGINOSUS-MELANOPS ; MAMMALIAN HERBIVORES
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369560
作者单位	[Pahl, L.] Queensland Dept Agr & Fisheries, POB 102, Toowoomba, Qld 4350, Australia
推荐引用方式 GB/T 7714	Pahl, L.. Macropods, feral goats, sheep and cattle. 2. Equivalency in what and where they eat[J],2019,41(6):519-533.
APA	Pahl, L..(2019).Macropods, feral goats, sheep and cattle. 2. Equivalency in what and where they eat.RANGELAND JOURNAL,41(6),519-533.
MLA	Pahl, L.."Macropods, feral goats, sheep and cattle. 2. Equivalency in what and where they eat".RANGELAND JOURNAL 41.6(2019):519-533.

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