INVESTIGADORES
FERREYRA Gustavo Adolfo
artículos
Título:
UV Effects on Marine Planktonic Food-Webs: A Synthesis of Results from Mesocosm Studies
Autor/es:
BELZILE. C., S. DEMERS, G. A. FERREYRA, I. SCHLOSS, C. NOZAIS, K. LACOSTE, B. MOSTAJIR, S. ROY, M. GOSSELIN, E. PELLETIER, S. M. F. GIANESELLA AND M. VERNET
Revista:
PHOTOCHEMISTRY AND PHOTOBIOLOGY
Editorial:
American Society for Photobiology
Referencias:
Año: 2006 vol. 82 p. 850 - 856
ISSN:
0031-8655
Resumen:
planktonic organisms. Direct and indirect effects on individual
organisms have complex impacts on food-web structure and
dynamics, with implications for carbon and nutrient cycling.
Mesocosm experiments are well suited for the study of such
complex interrelationships. Mesocosms offer the possibility to
conduct well-controlled experiments with intact planktonic
communities in physical, chemical and light conditions
mimicking those of the natural environment. In allowing the
manipulation of UV intensities and light spectral composition,
the experimental mesocosm approach has proven to be
especially useful in assessing the impacts at the community
level. This review of mesocosm studies shows that, although
a UV increase even well above natural intensities often has
subtle effects on bulk biomass (carbon and chlorophyll), it can
significantly impact the food-web structure because of different
sensitivity to UV among planktonic organisms. Given the
complexity of UV impacts, as evidenced by results of mesocosm
studies, interactions between UV and changing environmental
conditions (e.g. eutrophication and climate change) are likely
to have significant effects on the function of marine ecosystems.e.g. eutrophication and climate change) are likely
to have significant effects on the function of marine ecosystems.