Repository logo
 
Publication

Scaling a- and b-diversity : bryophytes along an elevational gradient on a subtropical oceanic Island (La Palma, Canary Islands)

2017Journal article Restricted access
Simple item page
dc.contributor.authorHernández-Hernández, Raquel
dc.contributor.authorBorges, Paulo A. V.
dc.contributor.authorGabriel, Rosalina
dc.contributor.authorRigal, François
dc.contributor.authorAh-Peng, Claudine
dc.contributor.authorGonzález-Mancebo, Juana M.
dc.date.accessioned2018-07-06T09:39:26Z
dc.date.available2018-07-06T09:39:26Z
dc.date.issued2017
dc.description.abstractQUESTIONS: We addressed three questions: (1) what is the variation of a- and b-diversity of bryophyte communities across spatial scales in an elevational gradient; (2) is spatial variation characteristic of different phylogenetic (mosses/ liverworts) and/or ecological groups (terrestrials/epiphytes); and (3) what is the CONTRIBUTION of species richness and species replacement (true turnover) to b-diversity along the elevational gradient? LOCATION: La Palma, Canary Islands, Spain. METHODS: An elevational transect spanning 0–2200 m a.s.l was sampled at altitudinal intervals of ca. 200 m, two 10 m 9 10 m plots were established at each elevation and inside each plot three 2 m 9 2 m quadrats were randomly selected. Within each quadrat, bryophytes were sampled in three replicate microplots of 10 cm 9 5 cm, for each substrate: soil, rocks, leaves, humus, decaying wood and tree trunks at three heights. We evaluated a- and b-diversity at plot and elevational level for all bryophytes and for phylogenetic and ecological Groups. Values of b-diversity were further decomposed into replacement and richness differences. We tested the relationship between a- and b-diversity and elevation using linear models with and without a quadratic term (elevation2) in an AICc-based framework. RESULTS: A total of 121 species were recorded along the transect. Alpha-diversity showed a hump-shaped pattern with elevation for all bryophytes, liverworts and epiphytic species, however, terrestrial species and mosses displayed no clear pattern. Species replacement was the main driver of b-diversity for all bryophytes and also for mosses and terrestrial species, and at different scales (elevational belt and quadrat). The contribution of species replacement increased with elevation, except for epiphytes and terrestrials. CONCLUSIONS: Our study contributes towards an understanding of the spatial organization of bryophyte diversity at different scales along an insular elevational gradient. We showed that bryophyte diversity was mostly influenced by species replacement at the largest scale. The observed differences in b-diversity decomposition between bryophyte phylogenetic and ecological groups could be dependent on climatic conditions and substrate availability. The strong differences observed along the elevational gradient related to true turnover are especially important in the current global change scenario.en
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationHernandez, R.H., Borges, P.A.V., Gabriel, R., Rigal, F., Ah-Peng, C. & Gonzalez-Mancebo, J.M. (2017). Scaling alpha and beta diversity: bryophytes along an elevational gradient on a subtropical oceanic island (La Palma, Canary Islands). "Jounal of Vegetation Science", 28(6): 1209-1219. DOI:10.1111/jvs.12573pt_PT
dc.identifier.doi10.1111/jvs.12573pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.3/4766
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherWiley-Blackwellpt_PT
dc.subjectEpiphytesen
dc.subjectLiverwortsen
dc.subjectMossesen
dc.subjectSpecies Replacementen
dc.subjectTerrestrialsen
dc.subjectVolcanic Islanden
dc.subjecta-Diversityen
dc.subjectb-Diversityen
dc.titleScaling a- and b-diversity : bryophytes along an elevational gradient on a subtropical oceanic Island (La Palma, Canary Islands)en
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceUnited Statespt_PT
oaire.citation.endPage1219pt_PT
oaire.citation.issue(6)pt_PT
oaire.citation.startPage1209pt_PT
oaire.citation.titleJournal of Vegetation Scienceen
oaire.citation.volume28pt_PT
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
110_Hernndez-Hernndez_et_al-2017-Journal_of_Vegetation_Science.pdf
Size:
742.13 KB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.73 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

DCEA - Artigos em Revistas Internacionais / Articles in International Journals
GBA - Artigos em Revistas Internacionais / Articles in International Journals