نتایج جستجو برای: plant geography

تعداد نتایج: 413757  

2015
Giuseppe Longobardi Silvia Ghirotto Cristina Guardiano Francesca Tassi Andrea Benazzo Andrea Ceolin Guido Barbujani

OBJECTIVES The notion that patterns of linguistic and biological variation may cast light on each other and on population histories dates back to Darwin's times; yet, turning this intuition into a proper research program has met with serious methodological difficulties, especially affecting language comparisons. This article takes advantage of two new tools of comparative linguistics: a refined...

Journal: :Systematic biology 2012
Richard C Harrington Thomas J Near

The rapid accumulation of multilocus data sets has led to dramatic advances in methodologies for estimating evolutionary relationships among closely related species, but relatively less advancement has been made in methods for discriminating between competing species delimitation hypotheses. Multilocus data sets provide an advantage in testing species delimitation scenarios because they offer a...

2016
Belén Carbonetto Mónica C. Fabbro Mariela Sciara Analía Seravalle Guadalupe Méjico Santiago Revale María S. Romero Bianca Brun Marcelo Fay Fabián Fay Martin P. Vazquez

The human microbiota is the collection of microorganisms living in or on the human body. An imbalance or dysbiosis in these microbial communities can be associated with a wide variety of human diseases (Petersen and Round, 2014; Pham and Lawley, 2014; Zaura et al., 2014). Moreover, when the microbiota of the same body sites is compared between different healthy individuals, specific microbial c...

2017
Jonathan L. Carrivick Fiona S. Tweed Felix Ng Duncan J. Quincey Joseph Mallalieu Thomas Ingeman-Nielsen Andreas B. Mikkelsen Steven J. Palmer Jacob C. Yde Rachel Homer Andrew J. Russell Alun Hubbard

1 School of Geography, University of Leeds, Leeds, United Kingdom, 2 Geography, Staffordshire University, Stoke-on-Trent, United Kingdom, 3 Department of Geography, University of Sheffield, Sheffield, United Kingdom, 4 Arctic Technology Centre, Technical University of Denmark, Kemitorvet, Lyngby, Denmark, 5 Department of Geography and Geology, University of Copenhagen, Copenhagen, Denmark, 6 Ge...

2009
Fengru Huang Hui Lin Bin Chen

Geographic environment is a combination of natural and cultural environments under which humans survive. Virtual Geographic Environment (VGE) is a new multi-disciplinary initiative that links geosciences, geographic information sciences and information technologies. A VGE is a virtual representation of the natural world that enables a person to explore and interact with vast amounts of natural ...

2004
Bruce L. Rhoads

T he one-hundreth anniversary of the Association of American Geographers (AAG) is an appropriate occasion to reflect on the future of geography in the U. S. During the past hundred years, American geography has been haunted by various dichotomies—none more pronounced than the distinction between human and physical geography. Although the dichotomy can be viewed as invalid (James 1967), it is ne...

2009
H. EBRAHIMZADEH

The content of total phenolics in roots, leaflets and seeds of a number of Astingulus species from Iran was examined. Phenolics content of the aqueous and methanolic extracts of the species were determined spectrophotometrically. Phenolics content depend on factors such as the species, geographical location of the plants and the organs. Moreover, the content of phenolics depends on the extracti...

Mahmoudpour, Mohammad, Divsalar, Mehrdad , Farajiha, Mohammad Hussein , Rahnamaei, Mohammad Taghi ,

From the early 20th century, relying on consistency of geography and history, the science of Historical Geography became subject to attention in the field of historical studies, and different theoretical schools emerged to focus on the type of attitude towards it. Geographic landscape is one of the relatively new study areas in historical geography that examines changes of the nature in a defin...

The book New Geographies of Language: Language, Culture and Politics in Wales is naturally seeking a very interesting goal rarely been witnessed before. For one thing, it is trying to mix language and linguistics with a totally distinct science, geography. For another, geography happens to be a literally exotic science. Students all around the world might be generally of two types: Those who lo...

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