cam.depositDate	2022-04-02
cam.issuedOnline	2022-04-14
cam.orpheus.counter	2
cam.orpheus.success	Wed May 25 11:13:32 BST 2022 - Embargo updated
dc.contributor.author	Calcagno, V
dc.contributor.author	Cunniffe, NJ
dc.contributor.author	Hamelin, FM
dc.contributor.orcid	Calcagno, V [0000-0002-5781-967X]
dc.contributor.orcid	Cunniffe, NJ [0000-0002-3533-8672]
dc.contributor.orcid	Hamelin, FM [0000-0003-2653-699X]
dc.date.accessioned	2022-04-04T23:30:39Z
dc.date.available	2022-04-04T23:30:39Z
dc.date.issued	2022
dc.date.updated	2022-04-02T09:24:47Z
dc.description.abstract	<jats:title>Abstract</jats:title><jats:p> <jats:list> <jats:list-item><jats:p>Many statistical methods attempt to detect species associations—and so infer interspecific interactions—from species co‐occurrence patterns. Habitat heterogeneity and out‐of‐equilibrium colonization histories are well recognized as potentially causing species associations, even when interactions are absent. The potential for patch disturbance, a classical component of metacommunity dynamics, to also drive spurious species associations has however been overlooked.</jats:p></jats:list-item> <jats:list-item><jats:p>Using a new general metacommunity model, we derive mathematical predictions regarding how patch disturbance would affect the patterns of species associations detected in ‘null’ co‐occurrence matrices. We also conduct numerical simulations to test our predictions and to compare the performance of several widespread statistical methods, including direct tests of pairwise independence, matrix permutation approaches and joint species distribution modelling.</jats:p></jats:list-item> <jats:list-item><jats:p>We show how classical metacommunity dynamics can produce statistical associations, both positive and negative, even when species do not interact, when there is no habitat heterogeneity, and at equilibrium. This occurs as soon as there is some rate of patch disturbance (i.e. simultaneous extinction of several species in a patch) and/or a finite life span of patches, a common feature of a broad range of plant, animal or microbial systems.</jats:p></jats:list-item> <jats:list-item><jats:p>Patch disturbance can compromise species co‐occurrence analyses and cause the artefactual detection of species associations if not taken into account. Including patch age (i.e. the time since the last patch disturbance event) as a covariate in a joint species distribution model can resolve the artefact. However, this requires additional data that often are not available in practice. We argue that the consequences of patch disturbance should not be underestimated when analysing species distribution patterns in metacommunity‐like systems.</jats:p></jats:list-item> </jats:list> </jats:p><jats:p>Read the free <jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="https://fesummaries.wordpress.com/disturbances-lead-to-biases-in-the-detection-of-interactions-between-species/">Plain Language Summary</jats:ext-link> for this article on the Journal blog.</jats:p>
dc.identifier.doi	10.17863/CAM.83191
dc.identifier.eissn	1365-2435
dc.identifier.issn	0269-8463
dc.identifier.uri	https://www.repository.cam.ac.uk/handle/1810/335754
dc.publisher	Wiley
dc.publisher.department	Department of Plant Sciences
dc.publisher.url	http://dx.doi.org/10.1111/1365-2435.14047
dc.rights	Attribution 4.0 International
dc.rights.uri	https://creativecommons.org/licenses/by/4.0/
dc.subject	Hmsc
dc.subject	independence
dc.subject	interactions
dc.subject	JSDM
dc.subject	metapopulation
dc.subject	permutations
dc.subject	Sim2
dc.subject	Sim9
dc.title	Metacommunity dynamics and the detection of species associations in co-occurrence analyses: Why patch disturbance matters
dc.type	Article
dcterms.dateAccepted	2022-04-01
prism.publicationName	Functional Ecology
pubs.licence-display-name	Apollo Repository Deposit Licence Agreement
pubs.licence-identifier	apollo-deposit-licence-2-1
rioxxterms.type	Journal Article/Review
rioxxterms.version	VoR
rioxxterms.versionofrecord	10.1111/1365-2435.14047

Metacommunity dynamics and the detection of species associations in co-occurrence analyses: Why patch disturbance matters

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