Počet záznamů: 1
The complex effect of heterogeneity and isolation in determining alpha and beta orchid diversity on islands in the Aegean archipelago
- 1.
SYSNO ASEP 0524617 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název The complex effect of heterogeneity and isolation in determining alpha and beta orchid diversity on islands in the Aegean archipelago Tvůrce(i) Tsiftsis, Spyros (UEK-B) ORCID, RID, SAI Celkový počet autorů 1 Zdroj.dok. Systematics and Biodiversity. - : Taylor & Francis - ISSN 1477-2000
Roč. 18, č. 3 (2020), s. 281-294Poč.str. 14 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova plant-species richness ; biogeographical determinants ; patterns ; biodiversity ; endemism ; climate ; model ; area ; abundance data ; generalized dissimilarity model ; habitat heterogeneity ; island biogeography ; isolation ; orchid richness and composition Vědní obor RIV EH - Ekologie - společenstva Obor OECD Biodiversity conservation CEP LO1415 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Omezený přístup Institucionální podpora UEK-B - RVO:86652079 UT WOS 000532611900007 EID SCOPUS 85083588309 DOI 10.1080/14772000.2020.1738584 Anotace Knowledge of factors determining the distribution of plants on islands is of crucial importance in island biogeography. Here the drivers and mechanisms that best explain alpha- and beta-diversity of orchids in the Aegean Archipelago were explored. The analyses were based on (a) matrix of the total number of orchid taxa recorded on each island, and (b) matrix containing the number of grid cells of each island in which each orchid has been recorded. Based on these matrices, generalized linear models (GLMs) were then used to determine the most important factors (geographical, climatic, geological) associated with orchid richness. Generalized dissimilarity modelling (GDM) was used to explore whether there are specific patterns in beta-diversity and to evaluate contributions to individual factors to these patterns. To investigate the similarity of the Aegean islands in terms of their orchid flora, a beta-diversity abundance matrix was analyzed using non-metric multidimensional scaling ordination method. GLM analysis revealed that maximum elevation, index of bioclimatic breadth (IBB), neighbour index (NI), island area, and the percentage of granite, limestone and quartz at each island were the best predictors of orchid alpha-diversity. Maximum elevation, habitat heterogeneity, IBB and island area were positively associated with alpha-diversity, whereas neighbour index and the percentage of granite, limestone and quartz at each island were negatively associated. Maximum elevation, NI, habitat heterogeneity and geographical distance were the best predictors of orchid turnover across the Aegean islands, whereas IBB, granite and limestone were less important. The NMDS ordination revealed that islands are structured from the southernmost to the northernmost, in a way that in general conforms to the phytogeographical division of the Aegean Archipelago. The drivers that account for the patterns in alpha- and beta-diversity were associated with differences in the degrees of isolation and heterogeneity (climatic and habitat) of the islands. Among the predictors, elevation and IBB proved to be better surrogates of habitat heterogeneity than island area. Pracoviště Ústav výzkumu globální změny Kontakt Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Rok sběru 2021 Elektronická adresa https://www.tandfonline.com/doi/full/10.1080/14772000.2020.1738584?scroll=top&needAccess=true
Počet záznamů: 1