Systematics, biogeography, and character evolution of <i>Sparganium</i> (Typhaceae): Diversification of a widespread, aquatic lineage

Sulman, Joshua D.; Drew, Bryan T.; Drummond, Chloe P.; Hayasaka, Eisuke; Sytsma, Kenneth J.

doi:10.3732/ajb.1300048

Cited by 41 publications

(67 citation statements)

References 106 publications

(142 reference statements)

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“…Dispersal probabilities between allowed pairs of areas were specified for three separate time slices (37–15 Ma, 15–5 Ma, 5–0 Ma) to factor in the timing of possible important geological events affecting Salvia dispersal (e.g., closure of the Mediterranean Sea, northern hemisphere land bridges, formation of the Panamanian Isthmus, separation of eastern and western Asia). Many of these events have been modeled specifically in DEC and DECj analyses elsewhere (e.g., Buerki et al., ; Drew and Sytsma, ; Sulman et al., ; Berger et al., ; Cardinal‐McTeague et al., ; Spalink et al., , b). We conducted 100 biogeographical stochastic mapping (BSM) replicates in BioGeoBEARS (Matzke, ; Dupin et al., ) on the MCC tree and on each of the 10 grove trees.…”

Section: Methodsmentioning

confidence: 99%

Tracking temporal shifts in area, biomes, and pollinators in the radiation ofSalvia(sages) across continents: leveraging anchored hybrid enrichment and targeted sequence data

Kriebel

Drew

Drummond

et al. 2019

American J of Botany

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128

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Premise of the StudyA key question in evolutionary biology is why some clades are more successful by being widespread geographically, biome diverse, or species‐rich. To extend understanding of how shifts in area, biomes, and pollinators impact diversification in plants, we examined the relationships of these shifts to diversification across the mega‐genus Salvia.MethodsA chronogram was developed from a supermatrix of anchored hybrid enrichment genomic data and targeted sequence data for over 500 of the nearly 1000 Salvia species. Ancestral areas and biomes were reconstructed using BioGeoBEARS. Pollinator guilds were scored, ancestral pollinators determined, shifts in pollinator guilds identified, and rates of pollinator switches compared.Key ResultsA well‐resolved phylogenetic backbone of Salvia and updated subgeneric designations are presented. Salvia originated in Southwest Asia in the Oligocene and subsequently dispersed worldwide. Biome shifts are frequent from a likely ancestral lineage utilizing broadleaf and/or coniferous forests and/or arid shrublands. None of the four species diversification shifts are correlated to shifts in biomes. Shifts in pollination system are not correlated to species diversification shifts, except for one hummingbird shift that precedes a major shift in diversification near the crown of New World subgen. Calosphace. Multiple reversals back to bee pollination occurred within this hummingbird clade.Conclusions Salvia diversified extensively in different continents, biomes, and with both bee and bird pollinators. The lack of tight correlation of area, biome, and most pollinator shifts to the four documented species diversification shifts points to other important drivers of speciation in Salvia.

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Section: Methodsmentioning

confidence: 99%

Tracking temporal shifts in area, biomes, and pollinators in the radiation ofSalvia(sages) across continents: leveraging anchored hybrid enrichment and targeted sequence data

Kriebel

Drew

Drummond

et al. 2019

American J of Botany

Self Cite

128

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show abstract

“…Dispersal probabilities between pairs of areas and areas allowed were specified for four separate time slices based on reconstructed geological events that have been reported in other studies (e.g. Buerki et al, 2011;Drew & Sytsma, 2012;Sulman et al, 2013). We estimated ancestral ranges using the ultrametric MCC tree obtained from the BEAST analysis.…”

Section: Ancestral Area Reconstructionmentioning

confidence: 99%

Insights on the evolutionary origin of Detarioideae, a clade of ecologically dominant tropical African trees

et al. 2017

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African tropical forests are generally considered less diverse than their Neotropical and Asian counterparts. By contrast, the Detarioideae is much more diverse in Africa than in South America and Asia. To better understand the evolution of this contrasting diversity pattern, we investigated the biogeographical and ecological origin of this subfamily, testing whether they originated in dry biomes surrounding the Tethys Seaway as currently hypothesized for many groups of Leguminosae. We constructed the largest time-calibrated phylogeny for the subfamily to date, reconstructed ancestral states for geography and biome/habitat, estimated diversification and extinction rates, and evaluated biome/habitat and geographic shifts in Detarioideae. The ancestral habitat of Detarioideae is postulated to be a primary forest (terra firme) originated in Africa-South America, in the early Palaeocene, after which several biome/habitat and geographic shifts occurred. The origin of Detarioideae is older than previous estimates, which postulated a dry (succulent) biome origin according to the Tethys Seaway hypothesis, and instead we reveal a post Gondwana and terra firme origin for this early branching clade of legumes. Detarioideae include some of the most dominant trees in evergreen forests and have likely played a pivotal role in shaping continental African forest diversity.

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“…Sparganium (Sulman, Drew, Drummond, Hayasaka, & Sytsma, 2013), for which alternative ways to measure macrophyte phylogenetic diversity (e.g. taxonomic distinctness) are currently needed.…”

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confidence: 99%

Species richness and taxonomic distinctness of lake macrophytes along environmental gradients in two continents

et al. 2017

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The biodiversity of aquatic ecosystems is under threat and there is an urgent need to quantify the various facets of biodiversity to assess the conservation value of freshwater ecosystems. The effects of taxonomic relatedness have so far not been taken into account in biodiversity assessments of lake macrophytes. We therefore tested the response of species richness and average taxonomic distinctness (AvTD) of aquatic macrophytes along environmental gradients using linear regression models and Bayesian Information Criterion variable selection method. We selected data from four regions, each with 50–60 lakes, situated in northern Europe (Finland and Sweden) and northern America (Minnesota and Wisconsin). We separately studied all macrophyte species, hydrophytes and helophytes. Species richness and AvTD of aquatic macrophytes were generally negatively related in all regions, although it was not statistically significant. Both biodiversity measures responded to environmental gradients to various degrees among the studied macrophyte groups and regions. Species richness was best explained by alkalinity and lake area in Finland, by elevation, annual mean temperature and total phosphorus in Minnesota, and by alkalinity in Wisconsin. AvTD was best explained by alkalinity, annual mean temperature and total phosphorus in Finland and by alkalinity in Wisconsin. Very weak relationships were found in Sweden. Our findings strongly suggest that complementary indices are needed to indicate more comprehensively the effects of environmental conditions on freshwater biodiversity. Species richness was found to be a better measure than AvTD to account for conservation value in freshwaters. However, further research is required to evaluate the usefulness of AvTD to indicate conservation value (e.g. randomisation tests), because alternative measures are clearly needed for those freshwater taxa lacking complete information on true phylogenetic diversity.

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Systematics, biogeography, and character evolution of Sparganium (Typhaceae): Diversification of a widespread, aquatic lineage

Abstract: Cooling trends during the Tertiary are correlated with the isolation of temperate Eurasian and North American taxa. Vicariance, long-distance dispersal, and habitat specialization are proposed as mechanisms for Sparganium diversification.

Cited by 41 publications

References 106 publications

Tracking temporal shifts in area, biomes, and pollinators in the radiation ofSalvia(sages) across continents: leveraging anchored hybrid enrichment and targeted sequence data

Tracking temporal shifts in area, biomes, and pollinators in the radiation ofSalvia(sages) across continents: leveraging anchored hybrid enrichment and targeted sequence data

Insights on the evolutionary origin of Detarioideae, a clade of ecologically dominant tropical African trees

Species richness and taxonomic distinctness of lake macrophytes along environmental gradients in two continents

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