Niche evolution versus niche conservatism and habitat loss determine persistence and extirpation in late Neogene European Fagaceae

Vieira, Manuel; Zetter, Reinhard; Grímsson, Friðgeir; Denk, Thomas

doi:10.1016/j.quascirev.2022.107896

Cited by 5 publications

(2 citation statements)

References 75 publications

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“…Temperature seems to be a more determining factor in understanding the change that occurred in the study group. This pattern of warm-to-cold niche evolution across a lineage has been found in other European plant groups [ 49 , 50 ] and is consistent with the hypothesis of climatic refugia during the Pleistocene for more conservative lineages and the opportunity to adapt to available colder environments for more evolutionary dynamic lineages [ 51 ]. Although the geobotanical regionalization has come under criticism and is not universally followed [ 16 ], our results support the use of biogeographical regionalization as an ecologically sound framework to interpret the evolutionary significance of plant lineages.…”

Section: Discussionsupporting

confidence: 88%

Species Delimitation in a Polyploid Group of Iberian Jasione (Campanulaceae) Unveils Coherence between Cryptic Speciation and Biogeographical Regionalization

Serrano,

Ortiz

2023

Plants

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Groups with morphological stasis are an interesting framework to address putative cryptic species that may be hidden behind traditional taxonomic treatments, particularly when distribution ranges suggest disjunct and environmentally heterogeneous biogeographic patterns. New hypotheses of delimitation of evolutionary independent units can lead to the identification of different biogeographic processes, laying the foundation to investigate their historical and ecological significance. Jasione is a plant genus with a distribution centered in the Mediterranean basin, characterized by significant morphological stasis. Within the western Mediterranean J. gr. crispa species complex, J. sessiliflora s.l. and allied taxa form a distinct group, occupying environmentally diverse regions. At least two ploidy levels, diploid and tetraploid, are known to occur in the group. The internal variability is assessed with phylogenetic tools, viz. GMYC and ASAP, for species delimitation. The results are compared with other lines of evidence, including morphology and cytology. The fitting of distribution patterns of the inferred entities to chorological subprovinces is also used as a biogeographical and environmental framework to test the species hypothesis. Despite the scarcity of diagnostic morphological characters in the group, phylogenetic delimitation supports the description of at least one cryptic species, a narrow endemic in the NE Iberian Peninsula. Moreover, the results support the segregation of a thermophilic group of populations in eastern Iberia from J. sessiliflora. Ploidy variation from a wide geographical survey supports the systematic rearrangement suggested by species delimitation. Taxonomic reorganization in J. sessiliflora s.l. would allow ecological interpretations of distribution patterns in great accordance with biogeographical regionalization at the subprovince level, supporting geobotanical boundaries as a framework to interpret species ecological coherence of cryptic lineages. These results suggest that species differentiation, together with geographic isolation and polyploidization, is associated with adaptation to different environments, shifting from more to less thermophilic conditions. Thus, the recognition of concealed evolutionary entities is essential to correctly interpret biogeographical patterns in regions with a complex geologic and evolutionary history, such as the Mediterranean basin, and biogeographical units emerge as biologically sound frameworks to test the species hypothesis.

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Section: Discussionsupporting

confidence: 88%

Species Delimitation in a Polyploid Group of Iberian Jasione (Campanulaceae) Unveils Coherence between Cryptic Speciation and Biogeographical Regionalization

Serrano,

Ortiz

2023

Plants

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“…We used Köppen profiles (e.g., [193][194][195][196][197]) to summarize the climatic niches occupied by extant Hydrocharitaceae species/genera and to hypothesize about their climatic niche evolution (Supplementary Material S2). A Köppen profile reflects the proportional Köppen-Geiger climate (cf.…”

Section: Climate Data Harvesting and Analysismentioning

confidence: 99%

Origin and Early Evolution of Hydrocharitaceae and the Ancestral Role of Stratiotes

Ulrich,

Vieira,

Coiro

et al. 2024

Plants

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The combined morphological features of Stratiotes (Hydrocharitaceae) pollen, observed with light and electron microscopy, make it unique among all angiosperm pollen types and easy to identify. Unfortunately, the plant is (and most likely was) insect-pollinated and produces relatively few pollen grains per flower, contributing to its apparent absence in the paleopalynological record. Here, we present fossil Stratiotes pollen from the Eocene of Germany (Europe) and Kenya (Africa), representing the first reliable pre-Pleistocene pollen records of this genus worldwide and the only fossils of this family discovered so far in Africa. The fossil Stratiotes pollen grains are described and compared to pollen from a single modern species, Stratiotes aloides L. The paleophytogeographic significance and paleoecological aspects of these findings are discussed in relation to the Hydrocharitaceae fossil records and molecular phylogeny, as well as the present-day distribution patterns of its modern genera.

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Where did they come from, where did they go? Niche conservatism in woody and herbaceous plants and implications for plant‐based paleoclimatic reconstructions

Quirk,

Smith,

Paul Acosta

et al. 2024

American J of Botany

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PremiseThe ecological conditions that constrain plants to an environmental niche are assumed to be constant through time. While the fossil record has been used previously to test for niche conservatism of woody flowering plants, additional studies are needed in other plant groups especially since they can provide insight with paleoclimatic reconstructions, high biodiversity in modern terrestrial ecosystems, and significant contributions to agriculture.MethodsWe tested climatic niche conservatism across time by characterizing the climatic niches of living herbaceous ginger plants (Zingiberaceae) and woody dawn redwood (Metasequoia) against paleoniches reconstructed based on fossil distribution data and paleoclimatic models.ResultsDespite few fossil Zingiberaceae occurrences in the latitudinal tropics, unlike living Zingiberaceae, extinct Zingiberaceae likely experienced paratropical conditions in the higher latitudes, especially in the Cretaceous and Paleogene. The living and fossil distributions of Metasequoia largely remain in the upper latitudes of the northern hemisphere. The Zingiberaceae shifted from an initial subtropical climatic paleoniche in the Cretaceous, toward a temperate regime in the late Cenozoic; Metasequoia occupied a more consistent climatic niche over the same time intervals.ConclusionsBecause of the inconsistent climatic niches of Zingiberaceae over geologic time, we are less confident of using them for taxonomic‐based paleoclimatic reconstruction methods like nearest living relative, which assume a consistent climatic niche between extant and extinct relatives; we argue that the consistent climatic niche of Metasequoia is more appropriate for these reconstructions. Niche conservatism cannot be assumed between extant and extinct plants and should be tested further in groups used for paleoclimatic reconstructions.

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Niche evolution versus niche conservatism and habitat loss determine persistence and extirpation in late Neogene European Fagaceae

Cited by 5 publications

References 75 publications

Species Delimitation in a Polyploid Group of Iberian Jasione (Campanulaceae) Unveils Coherence between Cryptic Speciation and Biogeographical Regionalization

Species Delimitation in a Polyploid Group of Iberian Jasione (Campanulaceae) Unveils Coherence between Cryptic Speciation and Biogeographical Regionalization

Origin and Early Evolution of Hydrocharitaceae and the Ancestral Role of Stratiotes

Where did they come from, where did they go? Niche conservatism in woody and herbaceous plants and implications for plant‐based paleoclimatic reconstructions

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