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Summary Trace-element data for mid-ocean ridge basalts (MORBs) and ocean island basalts (OIB) are used to formulate chemical systematics for oceanic basalts. The data suggest that the order of trace-element incompatibili...

The organization of taking turns to talk is fundamental to conversation, as well as to other speech-exchange systems. A model for the turn-taking organization for conversation is proposed, and is examined for its compati...

Materias / palabras clave: animal systematics, evolution, animal diversity, conservation, taxonomy; Science: Biology (General); Science: Zoology

Materias / palabras clave: taxonomy, biosystematics, evolution, systematics, life science; Science: Biology (General): Evolution; Science: Biology (General): Life

Materias / palabras clave: biodiversity, plant science, taxonomy, molecular biology, systematics; Science: Botany

Materias / palabras clave: taxonomy, morphology, anatomy, phylogeny (molecular or morphology-based), historical biogeography and palaeontology, arthropods; Science

Materias / palabras clave: insect science, biodiversity, phylogeny, taxonomy, entomology; Science: Science (General); Science: Biology (General): Life; Science: Zoology; Agriculture; Science: Biology (General): Ecology

Materias / palabras clave: zoology, evolutionary biology, population genetics, systematic zoology; Science: Zoology; Science: Biology (General): Evolution

Ecological changes in the phenology and distribution of plants and animals are occurring in all well-studied marine, freshwater, and terrestrial groups. These observed changes are heavily biased in the directions predict...

Individuals die, populations disappear, and species become extinct. That is one view of the world. But another view of the world concentrates not so much on presence or absence as upon the numbers of organisms and the de...

Understanding the evolutionary history of living organisms is a central problem in biology. Until recently the ability to infer evolutionary relationships was limited by the amount of DNA sequence data available, but new...

We report measurements of the mass density, ΩM, and cosmological-constant energy density, ΩΛ of the universe based on the analysis of 42 type Ia supernovae discovered by the Supernova Cosmology Project. The magnitude-...

Materias / palabras clave: acari, systematics, biology, ecology, zoology; Science: Biology (General)

Materias / palabras clave: animal taxonomy, systematics, zoogeography, ecology, population biology, nature conservation; Science: Zoology

Materias / palabras clave: zoology, biodiversity, taxonomy, systematics, ecology, natural history; Science: Biology (General): Ecology; Science: Zoology

Materias / palabras clave: afrotropical invertebrates, taxonomy, systematics, biology, biogeography, ecology; Science: Biology (General): Ecology; Science: Natural history (General): General. Including nature conservation, geographical distributio...

Materias / palabras clave: anatomy and physiology, taxonomy and systematics, biodiversity, entomology, biogeography; Science: Zoology

Materias / palabras clave: systematics, taxonomy, biogeography, ecology, conservation, biodiversity; Science: Zoology

Materias / palabras clave: ecology, evolution, genetics, plant sciences, systematics, botany; Science: Biology (General); Science: Botany

Materias / palabras clave: botany, systematics, ecology, biodiversity; Science: Botany

Materias / palabras clave: zoology, taxonomy, paleontology, biodiversity, natural history collections, systematics; Science: Zoology; Science: Natural history (General)

Materias / palabras clave: biodiversity, systematics, ecology, biogeography; Science: Zoology

Materias / palabras clave: animal physiology, animal behaviour, animal systematics, animal conservation, morphology; Science: Zoology

Materias / palabras clave: biodiversity, zoology, botany, systematics, bioinformatics, ecology; Science: Biology (General): Ecology; Science: Zoology; Science: Botany