INVESTIGADORES
CUSSAC Victor Enrique
artículos
Título:
Responses of plankton and fish from temperate zones to UVR and temperature in a context of global change
Autor/es:
GONÇALVES R.J., &; M.S. SOUZA,; J. AIGO,; B. MODENUTTI,; E. BALSEIRO,; V.E. VILLAFAÑE,; V. CUSSAC; E.W. HELBLING
Revista:
ECOLOGÍA AUSTRAL
Editorial:
ASOCIACIÓN ARGENTINA DE ECOLOGÍA
Referencias:
Lugar: Buenos Aires; Año: 2010 vol. 20 p. 129 - 153
ISSN:
0327-5477
Resumen:
ABSTRACT. In the last decades, both temperature and UVB (280-315 nm) radiation on the surface of
the Earth increased at growing rates as a result of human activities. Many studies had evaluated
the effects of temperature on aquatic ecosystems, but now the field broadens as the combination
and variations of temperature and radiation gains especial importance. In this work we attempt to
revisit some of our knowledge about the effects of UVR and temperature on marine and freshwater
plankton and fish from temperate regions (defined here as latitudes between 30-60º), especially
from the Patagonia area, due to the special characteristics found in these sites. UVR affects (often
negatively) almost all processes, from carbon fixation to behavior; and certainly all trophic levels
in plankton, from virus to fish larvae. The most prominent UVR danger is probably the mutagenic
action of UVB, which will affect a number of processes such as photosynthesis, growth and cell
division, among many others. In metazoans, UVR may cause stress upon survival or show sublethal
effects such as those in behavior and feeding. It is difficult to extract a general pattern, even in a
group of organisms, as responses to UVR appear to be species-specific and strongly influenced
by local conditions (e.g., UVR penetration, PAR/UVR ratios, and acclimation). While in many
cases significant effects have been determined, a number of mechanisms are available to avoid
and / or minimize the damage produced by UVR. However, this may not hold true for global
temperature changes. In the case of fishes for example, temperature appears as the main factor
driving habitat distributions, so the biogeography must be taken into account to consider the
potential outcomes of UVR and temperature changes. Even in the different scenarios predicted
by climatic models (including ozone layer recovery and temperature rise over the next decades)
more research combining UVR and temperature as factors will be needed to understand responses
of aquatic ecosystems into the context of global change.
the Earth increased at growing rates as a result of human activities. Many studies had evaluated
the effects of temperature on aquatic ecosystems, but now the field broadens as the combination
and variations of temperature and radiation gains especial importance. In this work we attempt to
revisit some of our knowledge about the effects of UVR and temperature on marine and freshwater
plankton and fish from temperate regions (defined here as latitudes between 30-60º), especially
from the Patagonia area, due to the special characteristics found in these sites. UVR affects (often
negatively) almost all processes, from carbon fixation to behavior; and certainly all trophic levels
in plankton, from virus to fish larvae. The most prominent UVR danger is probably the mutagenic
action of UVB, which will affect a number of processes such as photosynthesis, growth and cell
division, among many others. In metazoans, UVR may cause stress upon survival or show sublethal
effects such as those in behavior and feeding. It is difficult to extract a general pattern, even in a
group of organisms, as responses to UVR appear to be species-specific and strongly influenced
by local conditions (e.g., UVR penetration, PAR/UVR ratios, and acclimation). While in many
cases significant effects have been determined, a number of mechanisms are available to avoid
and / or minimize the damage produced by UVR. However, this may not hold true for global
temperature changes. In the case of fishes for example, temperature appears as the main factor
driving habitat distributions, so the biogeography must be taken into account to consider the
potential outcomes of UVR and temperature changes. Even in the different scenarios predicted
by climatic models (including ozone layer recovery and temperature rise over the next decades)
more research combining UVR and temperature as factors will be needed to understand responses
of aquatic ecosystems into the context of global change.
the Earth increased at growing rates as a result of human activities. Many studies had evaluated
the effects of temperature on aquatic ecosystems, but now the field broadens as the combination
and variations of temperature and radiation gains especial importance. In this work we attempt to
revisit some of our knowledge about the effects of UVR and temperature on marine and freshwater
plankton and fish from temperate regions (defined here as latitudes between 30-60º), especially
from the Patagonia area, due to the special characteristics found in these sites. UVR affects (often
negatively) almost all processes, from carbon fixation to behavior; and certainly all trophic levels
in plankton, from virus to fish larvae. The most prominent UVR danger is probably the mutagenic
action of UVB, which will affect a number of processes such as photosynthesis, growth and cell
division, among many others. In metazoans, UVR may cause stress upon survival or show sublethal
effects such as those in behavior and feeding. It is difficult to extract a general pattern, even in a
group of organisms, as responses to UVR appear to be species-specific and strongly influenced
by local conditions (e.g., UVR penetration, PAR/UVR ratios, and acclimation). While in many
cases significant effects have been determined, a number of mechanisms are available to avoid
and / or minimize the damage produced by UVR. However, this may not hold true for global
temperature changes. In the case of fishes for example, temperature appears as the main factor
driving habitat distributions, so the biogeography must be taken into account to consider the
potential outcomes of UVR and temperature changes. Even in the different scenarios predicted
by climatic models (including ozone layer recovery and temperature rise over the next decades)
more research combining UVR and temperature as factors will be needed to understand responses
of aquatic ecosystems into the context of global change.
BSTRACT. In the last decades, both temperature and UVB (280-315 nm) radiation on the surface of
the Earth increased at growing rates as a result of human activities. Many studies had evaluated
the effects of temperature on aquatic ecosystems, but now the field broadens as the combination
and variations of temperature and radiation gains especial importance. In this work we attempt to
revisit some of our knowledge about the effects of UVR and temperature on marine and freshwater
plankton and fish from temperate regions (defined here as latitudes between 30-60º), especially
from the Patagonia area, due to the special characteristics found in these sites. UVR affects (often
negatively) almost all processes, from carbon fixation to behavior; and certainly all trophic levels
in plankton, from virus to fish larvae. The most prominent UVR danger is probably the mutagenic
action of UVB, which will affect a number of processes such as photosynthesis, growth and cell
division, among many others. In metazoans, UVR may cause stress upon survival or show sublethal
effects such as those in behavior and feeding. It is difficult to extract a general pattern, even in a
group of organisms, as responses to UVR appear to be species-specific and strongly influenced
by local conditions (e.g., UVR penetration, PAR/UVR ratios, and acclimation). While in many
cases significant effects have been determined, a number of mechanisms are available to avoid
and / or minimize the damage produced by UVR. However, this may not hold true for global
temperature changes. In the case of fishes for example, temperature appears as the main factor
driving habitat distributions, so the biogeography must be taken into account to consider the
potential outcomes of UVR and temperature changes. Even in the different scenarios predicted
by climatic models (including ozone layer recovery and temperature rise over the next decades)
more research combining UVR and temperature as factors will be needed to understand responses
of aquatic ecosystems into the context of global change.