气候变化领域集成服务门户(CCPortal): Enhancing bird-mediated seed dispersal to increase rainforest regeneration in disused pasture

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DOI	10.1016/j.foreco.2020.118536
	Enhancing bird-mediated seed dispersal to increase rainforest regeneration in disused pasture – A restoration experiment
	Freeman A.N.D.; Freebody K.; Montenero M.; Moran C.; Shoo L.P.; Catterall C.P.
发表日期	2021
ISSN	0378-1127
卷号	479
英文摘要	Frugivorous birds are important seed dispersers but are infrequent visitors to pasture. Therefore, the recruitment of rainforest trees into disused pasture is often limited by dispersal. We studied potential seed sources, seed-dispersing birds, seed rain and seedling recruitment in an experimental management project that aimed to catalyse rainforest regeneration adjacent to old-growth forest in north-eastern Australia. To attract birds, nine semi-natural perches and water basins were installed in each of three 0.64 ha experimental plots, concurrent with herbicide control of pasture grasses. Despite a diverse avian seed-disperser community in the adjacent forest, only three species visited the plots. However, the presence of water increased seed deposition. Water basins collected twelve times as many native tree seeds as mesh seed traps (a 24-fold increase in seed deposition per unit area), including more large seeds (≥10 mm), and more species, especially of bird-dispersed forest trees. This was due to the large-gaped Pied Currawong (Strepera graculina) that deposited large seeds beneath the perches, when using water to regurgitate seeds. Deposition of large native forest tree seeds was also enhanced under perches positioned close to an already established tree or large shrub, highlighting an important indirect effect of pasture trees. Such pasture trees can themselves be effective regeneration nuclei, and their function improved by actions to suppress pasture growth and encourage dispersers. However, in this study, these interventions were not sufficient to fully mitigate barriers to rainforest regeneration. Although seed deposition was enhanced by the presence of water, semi-natural perches and pasture trees, recruited seedlings in the plots were not representative of the seed deposited. Instead they were dominated by a subset of small-diaspore, pioneer species. To further test the potential for semi-natural perches, water and pasture suppression to increase rainforest regeneration in disused pasture, requires testing of water source designs and carefully designed experimental restoration to examine dispersal and other regeneration barriers. © 2020 Elsevier B.V.
英文关键词	Frugivory and seed dispersal; Regeneration; Secondary forest; Seed size; Strepera; Supplementary water
语种	英语
scopus关键词	Birds; Concurrency control; Deposition; Restoration; Eastern Australia; Experimental plots; Indirect effects; Management projects; Old-growth forest; Presence of water; Seed dispersers; Seedling recruitment; Reforestation; catalysis; grass; herbicide; pasture; rainforest; seed dispersal; Birds; Deposition; Increments; Reforestation; Restoration; Seeds; Trees; Water; Australia; Aves; Poaceae; Strepera; Strepera graculina
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154943
作者单位	The School for Field Studies, Centre for Rainforest Studies, PO Box 141, Yungaburra, Queensland 4884, Australia; Environmental Futures Research Institute, Griffith University, Nathan, Queensland 4111, Australia; Tablelands Community Revegetation Unit, Tablelands Regional Council, PO Box 573, Atherton, Queensland 4883, Australia; Cath Moran Ecological, PO Box 392, Malanda, Queensland 4885, Australia; School of Biological Sciences, The University of Queensland, St Lucia, Queensland 4072, Australia
推荐引用方式 GB/T 7714	Freeman A.N.D.,Freebody K.,Montenero M.,等. Enhancing bird-mediated seed dispersal to increase rainforest regeneration in disused pasture – A restoration experiment[J],2021,479.
APA	Freeman A.N.D.,Freebody K.,Montenero M.,Moran C.,Shoo L.P.,&Catterall C.P..(2021).Enhancing bird-mediated seed dispersal to increase rainforest regeneration in disused pasture – A restoration experiment.Forest Ecology and Management,479.
MLA	Freeman A.N.D.,et al."Enhancing bird-mediated seed dispersal to increase rainforest regeneration in disused pasture – A restoration experiment".Forest Ecology and Management 479(2021).