DNA barcodes successfully identified Macaronesian Lotus (Leguminosae) species within early diverged lineages of Cape Verde and mainland Africa

Ojeda, Darío I.; Santos‐Guerra, Arnoldo; Oliva-Tejera, Felicia; Jaén‐Molina, Ruth; Caujapé‐Castells, Juli; Marrero-Rodríguez, Águedo; Cronk, Quentin

doi:10.1093/aobpla/plu050

Cited by 17 publications

(15 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Our findings support the importance of including geological dynamics in explanatory models of speciation processes within oceanic islands (Carson et al ., ; Gaisberg & Stierstorfer, ; Stuessy, ; Reyes‐Betancort et al ., ). Further support for this idea comes not only from recent phylogenetic studies on plant lineages on the Canary islands included in this analysis (García‐Maroto et al ., ; Ojeda et al ., ), but also from recent faunistic studies that show the imprint of geological history on within‐island diversification (within genera and within species) on the Canary Islands (Juan et al ., ; Emerson, ; Macías‐Hernández et al ., ) and on other oceanic archipelagos (Vandergast et al ., ).…”

Section: Discussionmentioning

confidence: 96%

“…Divergence times of SIEs belonging to the time calibrated radiated lineages [ Lotus (Ojeda et al ., ), Echium (García‐Maroto et al ., ) and Micromeria (Puppo et al ., )] indicate an origin of all species congruent with the age of the older parts of the host island, even for those species that are currently more abundant on very young terrain, or that show random distributions. Furthermore, molecular phylogenetic studies have indicated Descurainia gilva and Pericallis multiflora (SIEs from LP and TFE respectively) to be ancestral within their monophyletic lineages, indicating their speciation to have occurred early in the life of each island, notwithstanding that they are currently more frequent on young volcanic substrate (Swenson & Manns, ; Goodson et al ., ).…”

Section: Discussionmentioning

confidence: 99%

“…There have been many phylogenetic studies of Canarian plant lineages (e.g. Reyes‐Betancort et al ., ), but few provide estimated divergence times based on molecular clocks ( Lotus , Ojeda et al ., ; Echium, García‐Maroto et al ., ; Micromeria , Puppo et al ., ). We made use of these data in testing hypothesis 3.…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Transferring and implementing the general dynamic model of oceanic island biogeography at the scale of island fragments: the roles of geological age and topography in plant diversification in the Canaries

Otto

Whittaker

Gaisberg³

et al. 2016

Journal of Biogeography

View full text Add to dashboard Cite

Aim The general dynamic model (GDM) of oceanic island biogeography integrates rates of immigration, speciation and extinction in relation to a humped trajectory of island area, species carrying capacity and topographic complexity through time, based on a simplified island ontogeny. In practice, many islands have more complex ontogenies, featuring surfaces of varying age. Here, we extend the GDM to apply at a local scale within islands, and test the predictions analytically within individual islands. Location El Hierro, La Palma and Tenerife (Canary Islands).Methods Following the GDM logic, we derive predictions for the distributions and richness of single island endemics (SIEs) across island landscapes of different age. We test these predictions by means of generalized linear models and binominal tests using gridded species occurrence data for vascular plant SIE species and a set of climatic, topographic and terrain age variables. We also examined phylogenetic divergence times for a subset of endemic lineages.Results Geological age, in interaction with slope, and topographic variables, best explained SIE richness at the landscape scale. About 70% of SIEs had ranges strongly biased to, or largely restricted to old terrain. Available phylogenetic divergence times of SIEs of radiated plant lineages suggested an origin on the older parts of the islands. Metrics of anthropogenic disturbance and habitat availability were unrelated to the observed SIE pattern.Main conclusions Our findings support the hypothesis that SIEs have evolved and accumulated on older and topographically complex terrain, while colonization processes predominate on the youngest parts. These results imply that evolutionary processes shape species distributions at the landscape scale within islands. This opens the perspective of extending the GDM framework to understand processes at a local scale within individual islands.

show abstract

Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Transferring and implementing the general dynamic model of oceanic island biogeography at the scale of island fragments: the roles of geological age and topography in plant diversification in the Canaries

Otto

Whittaker

Gaisberg³

et al. 2016

Journal of Biogeography

View full text Add to dashboard Cite

show abstract

“…(), (9) Jordal and Hewitt (), (10) Wiemers, Stradomsky, and Vodolazhsky (), (11) Dincă, Dapporto, and Vila (), (12) Ojeda et al. (), (13) Saro et al. (), (14) Nogales et al.…”

Section: Discussionmentioning

confidence: 99%

Pleistocene extinctions as drivers of biogeographical patterns on the easternmost Canary Islands

García‐Verdugo

Caujapé‐Castells²,

Illera

et al. 2019

Journal of Biogeography

View full text Add to dashboard Cite

Subtropical islands are often viewed as refuges where Quaternary climatic shifts driving global episodes of extinction were buffered. Island biodiversity, however, may have been impacted by climatic fluctuations at local scales, particularly in spatially heterogeneous island systems. In this study, we generated a conceptual framework for predicting the potential impact of Pleistocene extinctions on the biogeographical pattern of the Canarian spermatophyte flora, with a focus on the easternmost Canarian islands (ECI). Then, we performed an exhaustive bibliographic revision (270 studies) to examine whether taxonomic, phylogenetic and phylogeographical data support our predictions. Although molecular information is limited for many lineages, the available data suggest that the majority of extant ECI plant taxa may be the result of relatively recent (<1 Ma) dispersal from surrounding insular and mainland areas. Different lines of evidence are compatible with the idea of a Pleistocene period of frequent lineage extirpation on ECI. Extinction may thus have provided new ecological opportunities for recent (re)colonization, with some cases of recent establishment mediated by facilitation. Considering background extinction on ECI, we describe five general patterns of colonization for Canarian plant lineages. In addition to factors related to island ontogeny and long‐distance dispersal, we suggest that Pleistocene extinctions may have significantly contributed to extant biogeographical patterns in the Canarian archipelago, such as the biased distribution ranges of island plants and the low endemic richness on ECI. This new scenario provides testable hypotheses for future studies dealing with the phylogeography, taxonomy and conservation of terrestrial biodiversity on the Canarian islands, and possibly, on other near‐shore islands.

show abstract

“…Pedrosia (Lowe) Christ and sect. Rhyncholotus (Monod) D.D.Sokoloff); its extensive speciation in Macaronesia being remarkable given the young evolutionary history of the clade (Schmidt, 2011;Ojeda & al., 2012Ojeda & al., , 2014. Due to the recent speciation in the /Pedrosia clade, species of this group are much less differentiated at the molecular level than those in other groups of the genus (e.g., .…”

Section: Version Of Recordmentioning

confidence: 99%

Phylogeny of Lotus (Leguminosae: Loteae): Partial incongruence between nrITS, nrETS and plastid markers and biogeographic implications

Крамина

Degtjareva

Samigullin

et al. 2016

TAXON

View full text Add to dashboard Cite

Lotus comprises ca. 130 species of herbs, semishrubs and shrubs native to the Old World, including important pasture crops and a model legume, L. japonicus. Earlier nrITS‐based phylogenies were incongruent with all taxonomic classifications of the genus. In particular, members of the former genus Dorycnium were unexpectedly placed near species of L. sect. Lotus. The primary goal of the present study is to explore whether the unexpected placement of members of sect. Lotus and the former genus Dorycnium in earlier phylogenetic studies resulted from (1) insufficient taxon sampling and/or (2) the use of only one DNA marker. The rooting of the Lotus phylogeny, its major clades and basic biogeographic patterns are also discussed. This is the first global phylogenetic study of Lotus that uses both plastid and nuclear markers. The nrITS region was analyzed in 155 ingroup specimens representing 98 species of Lotus. Sequences of nrITS, nrETS, psbA‐trnH spacer and rps16 intron were analyzed for 70 ingroup specimens representing 54 species. The placement of the segregate genera Dorycnium and Tetragonolobus in the synonymy of Lotus was confirmed. Analyses of plastid data strongly supported a basal split of Lotus into two clades, one comprising species of sect. Lotus plus those traditionally placed in Dorycnium and the other including the rest of the species. The former clade has a centre of species diversity in Europe and N Asia, and the latter in Macaronesia, Africa and S Asia. Only the "Southern" clade is resolved in analyses of nrITS and nrETS data. Trees inferred from plastid, nrITS and nrETS data shared the occurrence of several smaller clades corresponding to traditionally recognized infrageneric taxa or species groups as well as the occurrence of some well‐supported clades that differ from traditional taxonomic concepts. Several instances of incongruence were documented between nuclear and plastid markers and between the two nuclear markers, possibly resulting from reticulate evolution. The extant geographic patterns of Lotus are likely biased by at least one round of area fragmentation followed by expansion coupled with extensive speciation associated with the complex history of the Mediterranean biome.

show abstract

DNA barcodes successfully identified Macaronesian Lotus (Leguminosae) species within early diverged lineages of Cape Verde and mainland Africa

Cited by 17 publications

References 42 publications

Transferring and implementing the general dynamic model of oceanic island biogeography at the scale of island fragments: the roles of geological age and topography in plant diversification in the Canaries

Transferring and implementing the general dynamic model of oceanic island biogeography at the scale of island fragments: the roles of geological age and topography in plant diversification in the Canaries

Pleistocene extinctions as drivers of biogeographical patterns on the easternmost Canary Islands

Phylogeny of Lotus (Leguminosae: Loteae): Partial incongruence between nrITS, nrETS and plastid markers and biogeographic implications

Contact Info

Product

Resources

About