INVESTIGADORES
BELTRAME Maria Ornela
artículos
Título:
Phytoplankton Dynamic in Mar Chiquita Coastal Lagoon
Autor/es:
DE MARCO, SILVIA G.; BELTRAME M. ORNELA; FREIJE HUGO R.; MARCOVECCHIO JORGE E.
Revista:
JOURNAL OF COASTAL RESEARCH
Referencias:
Lugar: West Palm Beach (Florida); Año: 2005 vol. 21 p. 818 - 825
ISSN:
0749-0208
Resumen:
The concentration and distribution of nutrients (nitrate, nitrite, phosphate, silicate) in water, photosynthetic pigments
(chlorophyll a and phaeopigments) in suspended particulate matter (SPM), and phytoplankton from Mar Chiquita
Coastal Lagoon, in Argentina, was studied along six (6) sampling stations during a year in order to know their spatial
and temporal variations. Internationally standardized analytical methods were applied in order to reach these objectives.
The use of soils for farming and continental runoff of the adjacent terrestrial systems close to the coastal lagoon
seemed to be a significant nutrient source for this water body, which is able to support its own dynamic of phytoplankton
within this water body.
Results obtained regarding nutrient and pigment distribution allowed the identification of two different systems
within the coastal lagoon: one under marine influence and the other under inland influence, with different ecological
and environmental characteristics. Temporal trends of the corresponding phytoplankton development have been identified,
and it has been observed that the biological production which occurred within the coastal lagoon along the
whole year was higher than corresponding ones from other coastal environments in Argentina. Moreover, nutrient
occurrence within the internal region favored the development of the highest biomass detected within the whole
lagoon. The system seems to function as a transition zone, which profits from unusual nutrient inputs, together with
other environmental conditions (salinity, temperature), bringing continuous nutrient availability for phytoplankton
and consequently food supply for marine and estuarine organisms.a and phaeopigments) in suspended particulate matter (SPM), and phytoplankton from Mar Chiquita
Coastal Lagoon, in Argentina, was studied along six (6) sampling stations during a year in order to know their spatial
and temporal variations. Internationally standardized analytical methods were applied in order to reach these objectives.
The use of soils for farming and continental runoff of the adjacent terrestrial systems close to the coastal lagoon
seemed to be a significant nutrient source for this water body, which is able to support its own dynamic of phytoplankton
within this water body.
Results obtained regarding nutrient and pigment distribution allowed the identification of two different systems
within the coastal lagoon: one under marine influence and the other under inland influence, with different ecological
and environmental characteristics. Temporal trends of the corresponding phytoplankton development have been identified,
and it has been observed that the biological production which occurred within the coastal lagoon along the
whole year was higher than corresponding ones from other coastal environments in Argentina. Moreover, nutrient
occurrence within the internal region favored the development of the highest biomass detected within the whole
lagoon. The system seems to function as a transition zone, which profits from unusual nutrient inputs, together with
other environmental conditions (salinity, temperature), bringing continuous nutrient availability for phytoplankton
and consequently food supply for marine and estuarine organisms.marine influence and the other under inland influence, with different ecological
and environmental characteristics. Temporal trends of the corresponding phytoplankton development have been identified,
and it has been observed that the biological production which occurred within the coastal lagoon along the
whole year was higher than corresponding ones from other coastal environments in Argentina. Moreover, nutrient
occurrence within the internal region favored the development of the highest biomass detected within the whole
lagoon. The system seems to function as a transition zone, which profits from unusual nutrient inputs, together with
other environmental conditions (salinity, temperature), bringing continuous nutrient availability for phytoplankton
and consequently food supply for marine and estuarine organisms.