气候变化领域集成服务门户(CCPortal): Seabird guano inputs increase impacts from introduced mammals on the native plants and animals of an oceanic island

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DOI	10.1007/s00442-024-05546-7
	Seabird guano inputs increase impacts from introduced mammals on the native plants and animals of an oceanic island
	Espindola, Walter D.; Carlo, Tomas A.
发表日期	2024
ISSN	0029-8549
EISSN	1432-1939
英文摘要	Seabirds create fluxes of nutrients from marine to terrestrial ecosystems that influence the food webs of small islands. We investigated how guano inputs shape terrestrial food webs by comparing species of selected plant and animal species in a red-footed booby colony in Mona Island (Puerto Rico, Caribbean Sea), to sites of the island lacking guano inputs. We quantified guano deposition and its relationship to plant biomass production, fecundity and density, as well as the activity of native and introduced animal species. In general, guano inputs increased the gross primary plant productivity, size, and fecundity by twofold. Guano inputs were also associated with twofold increases in density of Anole lizards, but also to increases in the activity of introduced pigs (> 500%), goats (> 30%), and cats (> 500%), which negatively impact native species. In particular, elevated pig and cat activity within the booby colony was correlated with lower activity of endemic ground lizards and of introduced rats. Our results also suggest that severe droughts associated with climate change exacerbate the negative effects that introduced species have on vegetation and reduce the positive effects of seabird guano inputs. Our findings underscore the importance of allochthonous guano inputs in subsidizing plant productivity and native and endemic species in small oceanic islands, but also in increasing the negative impacts of introduced mammals. Management and conservation efforts should focus on the exclusion (or eradication) of introduced mammals, particularly pigs and goats, from remnant seabird colonies in Mona Island.
英文关键词	Seabirds; Allochthonous inputs; Caribbean islands; Bottom-up effects; Colonial birds; Ecological consequences; Colonial seabirds
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology
WOS记录号	WOS:001200719900001
来源期刊	OECOLOGIA
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/299920
作者单位	Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park
推荐引用方式 GB/T 7714	Espindola, Walter D.,Carlo, Tomas A.. Seabird guano inputs increase impacts from introduced mammals on the native plants and animals of an oceanic island[J],2024.
APA	Espindola, Walter D.,&Carlo, Tomas A..(2024).Seabird guano inputs increase impacts from introduced mammals on the native plants and animals of an oceanic island.OECOLOGIA.
MLA	Espindola, Walter D.,et al."Seabird guano inputs increase impacts from introduced mammals on the native plants and animals of an oceanic island".OECOLOGIA (2024).