Related topics: species

Latitudinal gradient of plant phylogenetic diversity explained

Why are there so many species in the tropics? For centuries, scientists have been searching for the causes of the latitudinal gradient in species diversity—a pattern that has been documented for most groups of living species, ...

Spring is advancing unevenly across North America

Spring is arriving earlier in many parts of North America, but this advance is not happening uniformly across the migration routes of many birds, according to a study by Eric Waller at the US Geological Survey in California ...

'Live fast, die young' lifestyle reflected in birds' feathers

Animals' lives tend to follow a quicker tempo as they get farther from the equator—birds at more northern latitudes mature faster, start reproducing younger, and live shorter lives, probably as a way of dealing with seasonal ...

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