Niche conservatism of Eulophia alta, a trans-Atlantic orchid species

The genus Eulophia embraces over 230 species distributed through the tropical and subtropical Africa, Asia, Australia and the Americas. In Neotropics it is represented by a sole species – E. alta. The aim of the presented study was to evaluate the difference between ecological niches occupied by Ame...

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Main Authors: Marta Kolanowska, Dariusz L. Szlachetko
Format: Article
Language:English
Published: Polish Botanical Society 2014-03-01
Series:Acta Societatis Botanicorum Poloniae
Subjects:
Online Access:https://pbsociety.org.pl/journals/index.php/asbp/article/view/2308
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author Marta Kolanowska
Dariusz L. Szlachetko
author_facet Marta Kolanowska
Dariusz L. Szlachetko
author_sort Marta Kolanowska
collection DOAJ
description The genus Eulophia embraces over 230 species distributed through the tropical and subtropical Africa, Asia, Australia and the Americas. In Neotropics it is represented by a sole species – E. alta. The aim of the presented study was to evaluate the difference between ecological niches occupied by American and African populations of this species based on the ecological niche modeling. The similarity between the glacial and present niches occupied by E. alta was calculated and the factors limiting the species occurrence were identified. Areas of seasonal tropical forest, tropical savanna and woodland served as refugia for the studied species during last glacial maximum and they were more widespread in Neotropics than in Africa. No significant niche shift after last glacial maximum was observed. The distribution of E. alta in its whole range is restricted mainly by temperature seasonality. The differences in the niches occupied by African and Neotropical populations of E. alta suggest preglacial disjunction of the species range and independent adaptation of both groups. Despite the significant range disjunction of E. alta the species is characterized by relatively high degree of niche conservatism.
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spelling doaj.art-081fceb6da344e9ebfa8881b867f854d2022-12-21T23:15:37ZengPolish Botanical SocietyActa Societatis Botanicorum Poloniae2083-94802014-03-01831515710.5586/asbp.2014.0072886Niche conservatism of Eulophia alta, a trans-Atlantic orchid speciesMarta Kolanowska0Dariusz L. Szlachetko1Department of Plant Taxonomy and Nature Conservation, University of Gdańsk, Wita Stwosza 59, 80-308 Gdańsk-Oliwa, PolandDepartment of Plant Taxonomy and Nature Conservation, University of Gdańsk, Wita Stwosza 59, 80-308 Gdańsk-Oliwa, PolandThe genus Eulophia embraces over 230 species distributed through the tropical and subtropical Africa, Asia, Australia and the Americas. In Neotropics it is represented by a sole species – E. alta. The aim of the presented study was to evaluate the difference between ecological niches occupied by American and African populations of this species based on the ecological niche modeling. The similarity between the glacial and present niches occupied by E. alta was calculated and the factors limiting the species occurrence were identified. Areas of seasonal tropical forest, tropical savanna and woodland served as refugia for the studied species during last glacial maximum and they were more widespread in Neotropics than in Africa. No significant niche shift after last glacial maximum was observed. The distribution of E. alta in its whole range is restricted mainly by temperature seasonality. The differences in the niches occupied by African and Neotropical populations of E. alta suggest preglacial disjunction of the species range and independent adaptation of both groups. Despite the significant range disjunction of E. alta the species is characterized by relatively high degree of niche conservatism.https://pbsociety.org.pl/journals/index.php/asbp/article/view/2308ecological niche modelinglast glacial maximumOrchidaceaetrans-Atlantic disjunction
spellingShingle Marta Kolanowska
Dariusz L. Szlachetko
Niche conservatism of Eulophia alta, a trans-Atlantic orchid species
Acta Societatis Botanicorum Poloniae
ecological niche modeling
last glacial maximum
Orchidaceae
trans-Atlantic disjunction
title Niche conservatism of Eulophia alta, a trans-Atlantic orchid species
title_full Niche conservatism of Eulophia alta, a trans-Atlantic orchid species
title_fullStr Niche conservatism of Eulophia alta, a trans-Atlantic orchid species
title_full_unstemmed Niche conservatism of Eulophia alta, a trans-Atlantic orchid species
title_short Niche conservatism of Eulophia alta, a trans-Atlantic orchid species
title_sort niche conservatism of eulophia alta a trans atlantic orchid species
topic ecological niche modeling
last glacial maximum
Orchidaceae
trans-Atlantic disjunction
url https://pbsociety.org.pl/journals/index.php/asbp/article/view/2308
work_keys_str_mv AT martakolanowska nicheconservatismofeulophiaaltaatransatlanticorchidspecies
AT dariuszlszlachetko nicheconservatismofeulophiaaltaatransatlanticorchidspecies