Buscar
Mostrando ítems 11-20 de 1480
Mechanisms affecting population density in fragmented habitat
(RESILIENCE ALLIANCE, 2005)
We conducted a factorial simulation experiment to analyze the relative importance of movement pattern, boundary-crossing probability, and mortality in habitat and matrix on population density, and its dependency on habitat ...
Sampling Strategies for Delimiting Species: Genes, Individuals, and Populations in the Liolaemus elongatus-kriegi Complex (Squamata: Liolaemidae) in Andean–Patagonian South America
(Oxford University Press, 2003-04)
Recovery of evolutionary history and delimiting species boundaries in widely distributed, poorly known groups requires extensive geographic sampling, but sampling regimes are difficult to design a priori because evolutionary ...
Improving the DNA Barcode Library of Mosquito Species With New Identifications and Discoveries in North-Central Argentina
(Entomological Society of America, 2021-10-18)
The family Culicidae is represented by 244 species in Argentina, many of them with epidemiological importance. DNA barcodes are effective tools for identifying mosquito species, for knowing genetic variability, and for ...
Plant Species Complexes as Models to Understand Speciation and Evolution: A Review of South American Studies
(2018-01-02)
Identifying discontinuous entities within species complexes is a major topic in systematic and evolutionary biology. Comprehensive inventories describing and identifying species rapidly and correctly before they or their ...
Shrub facilitation increases plant diversity along an arid scrubland-temperate rain forest boundary in South America
(2012)
Theoretical models predict nurse plant facilitation enhances species richness by ameliorating stressful environmental conditions and expanding
distributional ranges of stress-intolerant species into harsh environments. ...
Sexual dimorphism and interspecific head variation in the Liolaemus melanops complex (Squamata: Liolaemini) based on geometric morphometrics
(British Herpetological Society, 2016-07)
By analysing size and shape separately, geometric morphometric methods (GM) are a powerful tool to evaluate morphological differences within and between taxa. In this work, we used GM to investigate whether lizards of the ...
Palynostratigraphy of the Zorritas Formation, Antofagasta Region, Chile: Insights on the Devonian/Carboniferous boundary in western Gondwana
(Elsevier Science, 2017-05)
The Middle Member of the Zorritas Formation in the Antofagasta region of northern Chile, yielded terrestrial and marine palynomorph assemblages which span the Devonian/Carboniferous boundary. The assemblages show a clear ...
Transition boundaries for protistan species turnover in hypersaline waters of different biogeographic regions
The identification of environmental barriers which govern species distribution is a fundamental concern in ecology. Even though salt was previously identified as a major transition boundary for micro- and macroorganisms ...