Results 251 to 260 of about 264,275 (302)

‘Species’ without species

Studies in History and Philosophy of Science Part A, 2021
Biological science uses multiple species concepts. Order can be brought to this diversity if we recognize two key features. First, any given species concept is likely to have a patchwork structure, generated by repeated application of the concept to new domains.
Aaron Novick, W. Ford Doolittle
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Hordeum Species ☆

2013
The genus Hordeum, the barleys, with a basic chromosome number of 2. n=. 14, comprises about 30 grass species, with cultivated barley, Hordeum vulgare, being the world's fourth most important cereal. The grain of cultivated barley has two major uses: first, for malting to produce beer and spirits and, second, for animal feed and, occasionally, human ...
Snape, J. W., Powell, W., Waugh, R.
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One species, two species, red species, lead species? Phylogenetics and species concepts with Plethodon salamanders

2017
This lab introduces students to species concepts and basic computer-based tree-building methods using published nuclear and mitochondrial sequence data for Plethodon salamanders.
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Comparing Species Assemblages Via Species Accumulation Curves

Biometrics, 2009
Summary Comparing species assemblages given incidence‐based data is of importance in ecological studies, often done by a visual inspection of estimated species accumulation curves or by an ad hoc use of 95% pointwise confidence bands of these curves. It is shown that comparing species assemblages is a challenging problem. A χ2 test is proposed.
Mao, Chang Xuan, Li, Jun
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Vibrio Species

Clinics in Laboratory Medicine, 1999
Vibrios are an important cause of human food-borne illness associated with the consumption of seafood worldwide, and contaminated food and drinking water in developing countries. Clinical syndromes induced by vibrios such as Vibrio cholerae, V. parahaemolyticus, V.
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Vibrio Species

2019
The genus Vibrio contains 130 confirmed species, of which a dozen have been demonstrated to cause infections in humans. As vibrios are natural inhabitants of aquatic environments, infections are usually associated with wound exposure to seawater or consumption of raw seafood.
Ceccarelli, Daniela   +4 more
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Species Concepts and Plesiomorphic Species

Systematic Botany, 1995
Phylogenetic species concepts, in their many forms, represent an advance over pre- vious species concepts because of their improved ability to relate species to historical patterns of evolution. A plea is made to recognize the importance of the distinction between species identifiable on the basis of uniquely derived characters (here termed apospecies)
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Mourning Species:

2018
This chapter develops a reading practice for the Anthropocene by tracing the reflections on extinction that recur throughout Alfred Tennyson’s magisterial elegy, In Memoriam (1850). It asks how the poem’s treatment of extinction changes when it is read as an account of anthropogenic extinction, the decimation of species arising explicitly from human ...
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