Global Changes During the Last 3 Million Years: Climatic Controls and Biotic Responses

Webb, Thompson; Bartlein, Patrick J.

doi:10.1146/annurev.es.23.110192.001041

Cited by 482 publications

(348 citation statements)

References 129 publications

(116 reference statements)

Supporting

Mentioning

328

Contrasting

Unclassified

Order By: Relevance

“…Even though the vicariance can not be rejected in this study, the geologic background for the disjunction of Scopolia seems different from that of Mandragora based on its much younger estimated age (2.70 mya, 95% HPD: 0.62-5.46 mya). Rather than the uplift of the TP, the Pliocene climatic fluctuations followed by the Quaternary glaciations (Chandler et al, 1994;Combourieu-Nebout et al, 2000;Fauquette and Bertini, 2003;Webb and Bartlein, 1992;Willis et al, 1999) may be a more likely contributing factor for this disjunction. Long-distance dispersal may not be a favored explanation for the disjunction of Scopolia because the seeds of the genus fall to the ground by gravity and may be locally dispersed Hoare and Knapp, 1997;Knapp, 2002).…”

Section: Disjunctions Of Hyoscyameae and Mandragoreae Between Easternmentioning

confidence: 99%

Dispersals of Hyoscyameae and Mandragoreae (Solanaceae) from the New World to Eurasia in the early Miocene and their biogeographic diversification within Eurasia

Volis

Dillon

et al. 2010

Molecular Phylogenetics and Evolution

109

View full text Add to dashboard Cite

Section: Disjunctions Of Hyoscyameae and Mandragoreae Between Easternmentioning

confidence: 99%

Dispersals of Hyoscyameae and Mandragoreae (Solanaceae) from the New World to Eurasia in the early Miocene and their biogeographic diversification within Eurasia

Volis

Dillon

et al. 2010

Molecular Phylogenetics and Evolution

109

View full text Add to dashboard Cite

“…During the Upper Pliocene (2.5-1.84 Myr BP), the climate became colder and drier (Webb and Bartlein, 1992), leading to a rarefaction of the deciduous forest, with favourable habitats located more to the south (40-50° latitude), and limited to low altitude, or near the PaciWc and the Atlantic Ocean coast. With the Wrst major glaciations at the beginning of the Pleistocene (1.84 Myr BP), we suppose that the white-toothed shrews of the northern part of eastern Asia (Russia, Mongolia, Xinjiang, and Tibet) became extinct, except the population on the PaciWc coast (Fig.…”

Section: Barriers Refugia and Colonisation Routes In Eurasiamentioning

confidence: 99%

Pliocene and Pleistocene diversification and multiple refugia in a Eurasian shrew (Crocidura suaveolens group)

Dubey

Zaitsev

Cosson

et al. 2006

Molecular Phylogenetics and Evolution

110

117

View full text Add to dashboard Cite

We sequenced 998 base pairs (bp) of mitochondrial DNA cytochrome b and 799 bp of nuclear gene BRCA1 in the Lesser white-toothed shrew (Crocidura suaveolens group) over its geographic range from Portugal to Japan. The aims of the study were to identify the main clades within the group and respective refugia resulting from Pleistocene glaciations. Analyses revealed the Asian lesser white-toothed shrew (C. shantungensis) as the basal clade, followed by a major branch of C. suaveolens, subdivided sensu stricto into six clades, which split-up in the Upper Pliocene and Lower Pleistocene (1.9-0.9 Myr). The largest clade, occurring over a huge range from east Europe to Mongolia, shows evidence of population expansion after a bottleneck. West European clades originated from Iberian and Italo-Balkanic refugia. In the Near East, three clades evolved in an apparent hotspot of refugia (west Turkey, south-west and south-east of the Caucasus). Most clades include specimens of diVerent morphotypes and the validity of many taxa in the C. suaveolens group has to be re-evaluated. 

show abstract

“…There seem two possible non-exclusive explanations -the phylogroups are extremely old, or COII evolves particularly quickly in this species. Large ice sheets began to form 2.4 Mya in Europe (Webb and Bartlein, 1992), and there have been climatic oscillations dating back to the Tertiary that were sufficient to produce major range changes for many species (Hewitt, 1996). It is therefore likely that the current patterns in E. ephippiger reflect Pleistocene glaciations acting on existing, much older, patterns of diversity within the species, which have accumulated over several interglacials.…”

Section: Genetic Divergence Between Lineagesmentioning

confidence: 99%

An unusual phylogeography in the bushcricket Ephippiger ephippiger from Southern France

Spooner

Ritchie

2006

Heredity

View full text Add to dashboard Cite

Pleistocene glaciations have played a major role in species divergence. The bushcricket Ephippiger ephippiger shows unusual patterns of intraspecific variation in multiple traits across Southern Europe. This is centred in Southern France, and evidence implies that it results from secondary contact after differentiation in Pleistocene refugia. However, the possible time scales involved, locations of the refugia and patterns of expansion remain obscure. This study sequenced the COII (507 BP) and cyt b (428 BP) mitochondrial genes to examine the intraspecific phylogeography of Western European samples of E. ephippiger. A minimum evolution tree revealed little resolution between described subspecies of E. ephippiger. Strikingly, populations from the Pyrenees and Mediterranean coastal region contained a complex genetic structure corresponding to major river valleys, independent of the traditional taxonomy. Samples of the subspecies E. e. vitium formed a distinct clade, perhaps supporting their taxonomic status. However, other forms (cruciger and cunii) were not genetically distinct, which is surprising given differences in their morphology and behaviour. The extent of the genetic divergence between Pyreneen valleys is unexpectedly deep, with average Tamura-Nei distances of around 14% (net distances of 11%) separating the main clades of coding COII sequences. Cyt b showed a similar pattern, but was confounded by some non-coding probable pseudogenes. If a conventional insect molecular clock is applied, these cryptic clades must predate the Pleistocene, and hypotheses for their history are discussed. However, mtDNA divergence in Ephippiger is not evolving in a clock-like manner, because a likelihood ratio test rejects clock assumptions for the COII sequences.

show abstract

Global Changes During the Last 3 Million Years: Climatic Controls and Biotic Responses

Cited by 482 publications

References 129 publications

Dispersals of Hyoscyameae and Mandragoreae (Solanaceae) from the New World to Eurasia in the early Miocene and their biogeographic diversification within Eurasia

Dispersals of Hyoscyameae and Mandragoreae (Solanaceae) from the New World to Eurasia in the early Miocene and their biogeographic diversification within Eurasia

Pliocene and Pleistocene diversification and multiple refugia in a Eurasian shrew (Crocidura suaveolens group)

An unusual phylogeography in the bushcricket Ephippiger ephippiger from Southern France

Contact Info

Product

Resources

About