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DOI	10.1002/ece3.6580
	Refining trophic dynamics through multi-factor Bayesian mixing models: A case study of subterranean beetles
	Sacco, Mattia; Blyth, Alison J.; Humphreys, William F.; Cooper, Steven J. B.; Austin, Andrew D.; Hyde, Josephine; Mazumder, Debashish; Hua, Quan; White, Nicole E.; Grice, Kliti
通讯作者	Sacco, M
来源期刊	ECOLOGY AND EVOLUTION
ISSN	2045-7758
出版年	2020
卷号	10 期号:16 页码:8815-8826
英文摘要	Food web dynamics are vital in shaping the functional ecology of ecosystems. However, trophic ecology is still in its infancy in groundwater ecosystems due to the cryptic nature of these environments. To unravel trophic interactions between subterranean biota, we applied an interdisciplinary Bayesian mixing model design (multi-factor BMM) based on the integration of faunal C and N bulk tissue stable isotope data (delta C-13 and delta N-15) with radiocarbon data (Delta C-14), and prior information from metagenomic analyses. We further compared outcomes from multi-factor BMM with a conventional isotope double proxy mixing model (SIA BMM), triple proxy (delta C-13, delta N-15, and Delta C-14, multi-proxy BMM), and double proxy combined with DNA prior information (SIA + DNA BMM) designs. Three species of subterranean beetles (Paroster macrosturtensis,Paroster mesosturtensis,andParoster microsturtensis) and their main prey items Chiltoniidae amphipods (AM1:Scutachiltonia axfordiand AM2:Yilgarniella sturtensis), cyclopoids and harpacticoids from a calcrete in Western Australia were targeted. Diet estimations from stable isotope only models (SIA BMM) indicated homogeneous patterns with modest preferences for amphipods as prey items. Multi-proxy BMM suggested increased-and species-specific-predatory pressures on amphipods coupled with high rates of scavenging/predation on sister species. SIA + DNA BMM showed marked preferences for amphipods AM1 and AM2, and reduced interspecific scavenging/predation onParosterspecies. Multi-factorial BMM revealed the most precise estimations (lower overallSDand very marginal beetles' interspecific interactions), indicating consistent preferences for amphipods AM1 in all the beetles' diets. Incorporation of genetic priors allowed crucial refining of the feeding preferences, while integration of more expensive radiocarbon data as a third proxy (when combined with genetic data) produced more precise outcomes but close dietary reconstruction to that from SIA + DNA BMM. Further multidisciplinary modeling from other groundwater environments will help elucidate the potential behind these designs and bring light to the feeding ecology of one the most vital ecosystems worldwide.
英文关键词	Bayesian mixing models food webs groundwater metagenomics radiocarbon stygofauna
类型	Article
语种	英语
开放获取类型	DOAJ Gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000550509000001
WOS关键词	FOOD-WEB STRUCTURE ; STABLE-ISOTOPES ; CALCRETE AQUIFER ; DIVING BEETLES ; AMINO-ACIDS ; ARID ZONE ; ECOLOGY ; DNA ; RADIOCARBON ; DIVERSITY
WOS类目	Ecology ; Evolutionary Biology
WOS研究方向	Environmental Sciences & Ecology ; Evolutionary Biology
来源机构	University of Western Australia
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325112
作者单位	[Sacco, Mattia; Blyth, Alison J.; Grice, Kliti] Curtin Univ, WA Organ Isotope Geochem Ctr, Sch Earth & Planetary Sci, Inst Geosci Res, Perth, WA 6102, Australia; [Humphreys, William F.] Western Australian Museum, Collect & Res Ctr, Welshpool, WA, Australia; [Humphreys, William F.] Univ Western Australia, Sch Biol Sci, Crawley, WA, Australia; [Cooper, Steven J. B.; Austin, Andrew D.; Hyde, Josephine] Univ Adelaide, Australian Ctr Evolutionary Biol & Biodivers, Sch Biol Sci, Adelaide, SA, Australia; [Cooper, Steven J. B.] South Australian Museum, Evolutionary Biol Unit, Adelaide, SA, Australia; [Hyde, Josephine] Connecticut Agr Expt Stn, Dept Environm Sci, New Haven, CT 06504 USA; [Mazumder, Debashish; Hua, Quan] Australian Nucl Sci & Technol Org ANSTO, Kirrawee Dc, NSW, Australia; [White, Nicole E.] Curtin Univ, Sch Mol & Life Sci, Trace & Environm DNA Lab, Perth, WA, Australia
推荐引用方式 GB/T 7714	Sacco, Mattia,Blyth, Alison J.,Humphreys, William F.,et al. Refining trophic dynamics through multi-factor Bayesian mixing models: A case study of subterranean beetles[J]. University of Western Australia,2020,10(16):8815-8826.
APA	Sacco, Mattia.,Blyth, Alison J..,Humphreys, William F..,Cooper, Steven J. B..,Austin, Andrew D..,...&Grice, Kliti.(2020).Refining trophic dynamics through multi-factor Bayesian mixing models: A case study of subterranean beetles.ECOLOGY AND EVOLUTION,10(16),8815-8826.
MLA	Sacco, Mattia,et al."Refining trophic dynamics through multi-factor Bayesian mixing models: A case study of subterranean beetles".ECOLOGY AND EVOLUTION 10.16(2020):8815-8826.