Phylogenetic climatic niche conservatism and evolution of climatic suitability in Neotropical Angraecinae (Vandeae, Orchidaceae) and their closest African relatives

PeerJ

article

Marta Kolanowska¹  Elżbieta Grochocka¹  Kamil Konowalik³ 

[1] Department of Plant Taxonomy and Nature Conservation, University of Gdańsk;Department of Biodiversity Research, Global Change Research Institute AS CR;Institute of Biology, Wrocław University of Environmental and Life Sciences

关键词: Angraecinae;    Ecological niche modeling;    Orchidaceae;    Phylogenetic niche conservatism;    Angraecum;    Campylocentrum;    Dendrophylax;   

DOI  :  10.7717/peerj.3328

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

In the present study we investigate the concept of phylogenetic niche conservatism (PNC) within the American species of angraecoid orchids (Campylocentrum and Dendrophylax) and their closest relatives in the Old World (Angraecum) using ecological niche modelling (ENM). The predicted niche occupancy profiles were matched with the outcomes of previous phylogenetic studies to reconstruct the evolution of climatic suitability within the orchid group studied and evaluate the role of niche differentiation in the speciation of Angraecinae. No correlation between preferred niches and taxonomic relationships within the orchid group studied was revealed. The climatic suitability of the majority of the species overlapped each other, either fully or partially. This pattern is also present in the species of other orchid genera. Our research confirms a significant level of PNC in Orchidaceae, even within taxa exhibiting a transatlantic disjunction. The analysis of the evolution of climatic suitability indicated that the adaptation to various climatic conditions is not a factor that has driven speciation within orchids studied.

【 授权许可】

CC BY