+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Differential extinction and the contrasting structure of polar marine faunas

, : Differential extinction and the contrasting structure of polar marine faunas. Plos One 5(12): E15362-E15362

The low taxonomic diversity of polar marine faunas today reflects both the failure of clades to colonize or diversify in high latitudes and regional extinctions of once-present clades. However, simple models of polar evolution are made difficult by the strikingly different faunal compositions and community structures of the two poles. A comparison of early Cenozoic Arctic and Antarctic bivalve faunas with modern ones, within the framework of a molecular phylogeny, shows that while Arctic losses were randomly distributed across the tree, Antarctic losses were significantly concentrated in more derived families, resulting in communities dominated by basal lineages. Potential mechanisms for the phylogenetic structure to Antarctic extinctions include continental isolation, changes in primary productivity leading to turnover of both predators and prey, and the effect of glaciation on shelf habitats. These results show that phylogenetic consequences of past extinctions can vary substantially among regions and thus shape regional faunal structures, even when due to similar drivers, here global cooling, and provide the first phylogenetic support for the "retrograde" hypothesis of Antarctic faunal evolution.


PMID: 21203524

DOI: 10.1371/journal.pone.0015362

Other references

Lin X G.; Hao W Y., 1989: Mycorrhizal dependency of various kinds of plants. Mycorrhizal dependency of various kinds of plants was estimated in pot cultures. Seeds or cuttings inoculated with Glomus spp. were grown in unsterilized sandy fluvo-aquic soil or sand, fertilized with dilute Hoagland's solution. Results show...

Germing, A.; Machraoui, A.; V.Dryander, S.; Jaeger, D.; Bojara, W.; Lawo, T.; Lemke, B.; Barmeyer, J., 1998: Ticlopidine after coronary stenting Is the combination with aspirin dispensable? Follow-up results of a randomized study. Annals of Hematology 76(SUPPL 1): A11

Stear, J.R., 1920: Flea-beetle Injury to Apples. The flea-beetle, Nodonota puncticollis, Say, has caused considerable injury to apples in Pennsylvania by feeding on the fruit and occasionally also on the leaves. It was first noticed on 2nd June and was very abundant by the 14th. The infestation...

Chang, K.V.; Wu, Y.; Datta, G.; Vadgama, J.V., 1996: Insulin-like growth factor-I regulates System A transport in human breast cancer cells. Molecular Biology of the Cell 7(SUPPL ): 351A

Mühlbächer, W., 1968: Paranoia in a general practice. Der Landarzt 44(30): 1454-1455

Miyazaki, K.; Umenishi, F.; Funahashi, K.; Koshikawa, N.; Yasumitsu, H.; Umeda, M., 1992: Activation of TIMP-2/progelatinase A complex by stromelysin. Progelatinase A was purified as a complex with TIMP-2 from the conditioned medium of a human glioblastoma cell line. The TIMP-2/progelatinase complex was resistant to the activation by p-aminophenylmercuric acetic acid (APMA), and showed less than...

Yatou, O.; Hiraiwa, T.; Higuchi, T.; Takahashi, K., 1991: A radiation induced mutant of mulberry, Morus alba L., resistant to bacterial blight. A total of 57 trees of the variety Ichinose, exposed to up to 35 R/day of gamma radiation for 23 years, were artificially inoculated with Pseudomonas syringae pv. mori in 1989. Two branches of 1 tree showed significantly increased disease resistan...

Dobromilska, R.; Kujath, K., 2006: Wplyw zabiegow przyspieszajacych dojrzewanie owocow na kwitnienie i owocowanie pomidora drobnoowocowego. The investigations were carried out in 2001-2003 at the Horticulture Experimental Station, University of Agriculture in Szczecin. The influence of truss cutting and application of Ethrel preparation on the flowering and acceleration of ripening o...

Rosano G.M.C.; Lindsay D.C.; Kaski J.C.; Poole Wilson P.A.; Sarrel P.M., 1992: Syndrome x in women may be related to ovarian hormone deficiency. European Heart Journal 13(ABSTR SUPPL): 104

Louryan, S.; Glineur, R.; Dourov, N., 1992: Induced and genetic mouse middle ear ossicular malformations: a model for human malformative ossicular diseases and a tool for clarifying their normal ontogenesis. Oral administration of 13-cis retinoic acid (RA) to pregnant mice on the 9th gestation day provokes important malformations of the middle ear ossicles, associated with a general kind of craniofacial dysmorphogenesis evoking the human mandibulofaci...