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Mostrando ítems 11-20 de 200
Phylogenetic relationships, diversification and biogeography in Neotropical Brotogeris parakeets
(WILEY-BLACKWELL, 2009)
Aim We present a molecular phylogenetic analysis of Brotogeris (Psittacidae) using several distinct and complementary approaches: we test the monophyly of the genus, delineate the basal taxa within it, uncover their ...
Ecological and Spatial Patterns Associated with Diversification of the Shrub Genus Tetraglochin along Southern-Central Andes (Rosaceae)
(Springer, 2019-02-26)
In addition to the degree of geographical isolation (sympatry, parapatry, allopatry and peripatry), ecology can be an important factor promoting diversification of lineages, both by niche divergence as well as niche ...
The latitudinal diversity gradient in South American mammals revisited using a regional analysis approach: The importance of climate at extra-tropical latitudes and history towards the tropics
(Public Library of Science, 2017-09-05)
The latitudinal diversity gradient has been considered a consequence of a shift in the impact of abiotic and biotic factors that limit species distributions from the poles to the equator, thus influencing species richness ...
Dispersal traits drive the phylogenetic distance decay of similarity in Neotropical stream metacommunities
(2015-11-01)
Aim: The drivers of phylogenetic beta diversity include both local processes (e.g. environmental filtering) and regional processes (e.g. dispersal limitation). The role of environmental filtering can be investigated more ...
The phylogenetic position and taxonomic status of Sterechinus bernasconiae Larrain, 1975 (Echinodermata, Echinoidea), an enigmatic Chilean sea urchin
(Springer, 2015)
Sterechinus is a very common echinoid genus in benthic communities of the Southern Ocean. It is widely distributed across the Antarctic and South Atlantic Oceans and has been the most frequently collected and intensively ...
Reconstructing the phylogenetic history of the tribe Leucocoryneae (Allioideae): Reticulate evolution and diversification in South America
(Academic Press Inc Elsevier Science, 2018-10)
At present, the Allioideae is included within the Amaryllidaceae, which is an economically important bulb crop subfamily that includes onion, garlic, and ornamental species worldwide. The Allioideae includes four tribes ...
Are ocean currents to slow to counteract SAR11 evolution? A next-generation sequencing, phylogeographic analysis
(Academic Press Inc Elsevier Science, 2017-02)
This work set out to shed light on the phylogeography of the SAR11 clade of Alphaproteobacteria, which is probably the most abundant group of heterotrophic bacteria on Earth. In particular, we assessed the degree to which ...
On the mismatch in the strength of competition among fossil and modern species of planktonic Foraminifera
(2019-12-01)
Aim: Many clades display the macroevolutionary pattern of a negative relationship between standing diversity and diversification rates. Competition among species has been proposed as the main mechanism that explains this ...
Phylogenetic analysis supports the monophyly of the South American mayfly genus Brasilocaenis Puthz, 1975 (Insecta: Ephemeroptera: Caenidae)
(Elsevier Gmbh, 2019-04)
Brasilocaenis Puthz, 1975 is a South American genus of Caenidae (Ephemeroptera). Except for their very distinct male genitalia, the species of this genus are morphologically similar to South American species of Caenis. We ...
Evolution and Conservation on Top of the World: Phylogeography of the Marbled Water Frog (Telmatobius marmoratus Species Complex; Anura, Telmatobiidae) in Protected Areas of Chile
(Oxford Univ Press, 2015)
The Andean Altiplano has served as a complex setting throughout its history, driving dynamic processes of diversification in several taxa. We investigated phylogeographic processes in the Telmatobius marmoratus species ...