Related topics: climate change · extinction · plants · biodiversity · plos one

Vegetation-free patches encourage ground-nesting wild bees

Relatively little is known about the nesting requirements of ground-nesting wild bees, although nesting sites are of central importance for most wild bee species. There are almost 600 wild bee species in Germany and 75% nest ...

Asiatic hard clams can synthesize antibiotics

Clams and other invertebrates often live in habitats with dense bacterial populations, despite lacking adaptive, lymphocyte-based immune systems. How clams resist bacterial pathogens in the environment is unclear.

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Species

In biology, a species is:

There are many definitions of what kind of unit a species is (or should be). A common definition is that of a group of organisms capable of interbreeding and producing fertile offspring, and separated from other such groups with which interbreeding does not (normally) happen. Other definitions may focus on similarity of DNA or morphology. Some species are further subdivided into subspecies, and here also there is no close agreement on the criteria to be used.

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