نتایج جستجو برای: endemics

تعداد نتایج: 711  

Journal: :Bulletin of the African Bird Club 1996

2014
Courtney E. Gorman Brad M. Potts Jennifer A. Schweitzer Joseph K. Bailey Paul Adam

Species ranges have been shifting since the Pleistocene, whereby fragmentation, isolation, and the subsequent reduction in gene flow have resulted in local adaptation of novel genotypes and the repeated evolution of endemic species. While there is a wide body of literature focused on understanding endemic species, very few studies empirically test whether or not the evolution of endemics result...

Journal: :Evolution; international journal of organic evolution 2011
Brian L Anacker Justen B Whittall Emma E Goldberg Susan P Harrison

Habitat specialization plays an important role in the creation and loss of biodiversity over ecological and evolutionary time scales. In California, serpentine soils have a distinctive flora, with 246 serpentine habitat specialists (i.e., endemics). Using molecular phylogenies for 23 genera containing 784 taxa and 51 endemics, we infer few transitions out of the endemic state, which is shown by...

2016
Thomas Wesener Cathrin Conrad

Local endemic species with their unique evolutionary history always stirred the interest of scientists. One such area especially rich in endemics is northern Italy. In case of pill millipedes of the genus Glomeris Latreille, 1803, only a single species is found in northern Europe, while 22 country-endemics alone are known from Italy. Many of these endemics, however, have not been studied in sev...

2007
Jerry M. Baskin Carol C. Baskin JERRY M. BASKIN

Within the unglaciated eastern United States, where the natural vegetation is mostly deciduous forest, edaphically-controlled herbaceous plant communities occur on unshaded rock outcrops in shallow soil developed from serpentine, shale, granite, limestone, dolomite, sandstone, chert, rhyolite and other rock types. The most distinctive features of the flora of these communities are their endemic...

Journal: :Cadernos de saude publica 2004
Virginia Ragoni de Moraes Correia Marilia Sá Carvalho Paulo Chagastelles Sabroza Cíntia Honório Vasconcelos

The objective of this study, based on a systematic literature review, is to present the characteristics and potentialities of remote sensing as a useful environmental surveillance tool for applied research in the control of endemics in Brazil. Onboard satellite sensors allow for monitoring the territory, furnishing spatial and temporal information on various scales and regions in the electromag...

Journal: :Annals of botany 2007
Sara Palacio Adrián Escudero Gabriel Montserrat-Martí Melchor Maestro Rubén Milla María J Albert

BACKGROUND AND AIMS Plants from gypsum habitats are classified as gypsophiles and gypsovags. The former include both narrow endemics limited to small gypsum areas and regionally dominant gypsophiles growing in gypsum areas of large regions, whereas gypsovags are plants that can grow both in gypsum and non-gypsum soils. Factors controlling the distribution of gypsum plants are still not fully un...

Journal: :Annals of botany 2003
Javier Gulias Jaume Flexas Maurici Mus Josep Cifre Elkadri Lefi Hipolito Medrano

Gas exchange parameters, leaf nitrogen content and specific leaf area (SLA) were measured in situ on 73 C3 and five C4 plant species in Mallorca, west Mediterranean, to test whether species endemic to the Balearic Islands differed from widespread, non-endemic Mediterranean species and crops in their leaf traits and trait inter-relationships. Endemic species differed significantly from widesprea...

2012
Cathy Steel Sudhir Varma Thomas B. Nutman

BACKGROUND Human filarial infection is characterized by downregulated parasite-antigen specific T cell responses but distinct differences exist between patients with longstanding infection (endemics) and those who acquired infection through temporary residency or visits to filarial-endemic regions (expatriates). METHODS AND FINDINGS To characterize mechanisms underlying differences in T cells...

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