Marine biotic responses to environmental change and feedbacks to climate: UV-B radiation as a rate limiting step for removal of marine DOM

THOMAS, DAVID; LARA, RUBÉN JOSÉ

IPCC Climate Change 1995 - The Science of Climate Change

Cambridge University Press

Lugar: Cambridge; Año: 1996; p. 487 - 509

Solar ultraviolet (UV) radiation has increased as a consequence of stratospheric ozone depletion. UV-B (280-329 nm) exposure depresses primary production and growth of phytoplankton. As species differ in their tolerance to UV-B, a shift in community structure favouring the more tolerant would be expected. UV-B radiation inhibits marine bacterial activity and has differing effects on dissolved organic carbon (DOC) derived from various sources. The effects on UV-B on marine biogeochemical processes must be taken into account for a realistic assessment of the role of these processes in environmental change.