Results 261 to 270 of about 10,024,870 (318)

Unveiling the Patterns of Wild Bee-Plant Interactions on a Large and Mostly Unexplored Mediterranean Island (Sardinia, Italy). [PDF]

open access: yesEcol Evol
Lezzeri M   +9 more
europepmc   +1 more source

‘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
openaire   +2 more sources

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.
openaire   +2 more sources

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.
openaire   +1 more source

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
openaire   +2 more sources

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