The Southeast South American shelf large marine ecosystem

Bisbal, Gustavo A.

doi:10.1016/0308-597x(95)92570-w

Cited by 86 publications

(65 citation statements)

References 23 publications

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“…The SW Atlantic coast constitutes the largest continental shelf in the Southern Hemisphere (Bisbal 1995); its main characteristics have been described by Acha et al (2004), Bianchi et al (2005) and references therein. Briefly, the Argentinean shelf covers a 10 6 km 2 area, extending from approximately 41°S to Cape Horn (near 55°S).…”

Section: Methodsmentioning

confidence: 99%

“…Light penetration at the sampling depth (9 m) was measured with a Biospherical PUV radiometer deployed from a launch, about 100 m away from the icebreaker. The depth of the euphotic zone in the area is always >10 m (Angelescu & Prenszki 1987, in Bisbal 1995 , depending on the time of year and cloud conditions. Two to 3 replicates were used to determine the initial oxygen concentration, and there were 3 replicates for each light and each dark incubation.…”

Section: Methodsmentioning

confidence: 99%

“…The SW Atlantic shelf has been classified as a 'Class 1 large marine ecosystem' (primary productivity > 300 g C m -2 yr Bisbal 1995). There is very little local data available on primary production, community respiration, community composition and distribution in this extensive area (Lange 1985, Lutz & Carreto 1991, Carreto et al 1995.…”

Section: Introductionmentioning

confidence: 99%

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Role of plankton communities in seaair variations in pCO2 in the SW Atlantic Ocean

Schloss¹,

Ferreyra²,

Ferrario³

et al. 2007

Mar. Ecol. Prog. Ser.

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The influence of the plankton community structure on carbon dynamics was studied in the surface waters of the Argentinean continental shelf (SW Atlantic Ocean) in summer and fall 2002, 2003 and 2004. The horizontal changes in plankton community respiration (R), net community production (NCP) and gross primary production (GPP) were (1) compared with the difference in the partial pressure of CO 2 (pCO 2 ) between the sea surface and the atmosphere (ΔpCO 2 ), (2) compared with oxygen saturation and (3) related to the microscopic phytoplankton assemblages. This area, which has recently been shown to be a CO 2 sink, had an average surface oxygen saturation of 108.1%, indicating that net photosynthesis could have played a dominant role in the CO 2 dynamics. At most stations, the production:respiration (GPP:R) ratio was greater than 1, indicating that planktonic communities were autotrophic; the average GPP:R ratio for the whole study was 2.99. Phytoplankton biomass (chlorophyll a) and NCP showed an inverse relationship with ΔpCO 2 and a direct relationship with %O 2 saturation when phytoplankton assemblages were dominated by diatoms (30% of the stations). This was not the case when small (≤5 µm) flagellates were the most abundant organisms. Although NCP was mostly positive for both groups of stations (i.e. diatom-dominated or small flagellate-dominated), other physical and biological processes are thought to modify the CO 2 dynamics when small flagellates are the prevailing phytoplankton group.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Role of plankton communities in seaair variations in pCO2 in the SW Atlantic Ocean

Schloss¹,

Ferreyra²,

Ferrario³

et al. 2007

Mar. Ecol. Prog. Ser.

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“…This area is therefore integrated in the Southeast South American Shelf Large Marine Ecosystem (SSASLME) [4,5]. Currently, this region is the only worldwide significant area for high seas (HS) fisheries not covered by any Regional Fisheries Management Organisation (RFMO) [3].…”

Section: Introductionmentioning

confidence: 99%

A First Approach to Assess the Impact of Bottom Trawling Over Vulnerable Marine Ecosystems on the High Seas of the Southwest Atlantic

Portela¹,

Cristobo²,

Ríos³

et al. 2015

Biodiversity in Ecosystems - Linking Structure and Function

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“…The only aluminum smelter in the country (ALUAR) is located in the city of Puerto Madryn on Golfo Nuevo, the southern gulf of the Peninsula. In addition, sea currents moving in north-south direction bring waters from the Buenos Aires coast which is the most populated and industrialized area of the country with numerous metallurgical, petrochemical, textile and pharmaceutical industries [19]. This suggests that exposure to metals from contaminated water and air is possible for southern right whales that use the PV nursery ground annually from June to December.…”

Section: Introductionmentioning

confidence: 99%

Metal Levels in Southern Right Whales (Eubalaena australis) from Península Valdés, Argentina

Martino

Wise

Perkins

et al. 2013

J Environ Anal Toxicol

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Península Valdes, Argentina, is a nursing ground for a population of southern right whales ( Eubalaena australis ). In the last two decades this area has been subjected to an increase in population, tourism and industrial growth. This has raised the concern for exposure to chemical contaminants such as metals. In this study we measured nonessential metals (Ag, Al, As, Au, Ba, Be, Co, Cd, Cr, Hg, Li, Ni, Pb, Sb, Sn, Sr, U and Ti), essential metals (Cu, Fe, Mg, Mn, Mo and Zn) and an essential element (Se) in skin biopsies from female southern right whales (n=10). This is the first report on tissue concentrations of metals in adult southern right whales. Overall, tissue values were on the low end of the spectrum and similar to the values reported in studies of mysticetes from other regions. Measured values do not reflect substantial amounts of accumulation and thus serve as a baseline.

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The Southeast South American shelf large marine ecosystem

Cited by 86 publications

References 23 publications

Role of plankton communities in seaair variations in pCO2 in the SW Atlantic Ocean

Role of plankton communities in seaair variations in pCO2 in the SW Atlantic Ocean

A First Approach to Assess the Impact of Bottom Trawling Over Vulnerable Marine Ecosystems on the High Seas of the Southwest Atlantic

Metal Levels in Southern Right Whales (Eubalaena australis) from Península Valdés, Argentina

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The Southeast South American shelf large marine ecosystem

Cited by 86 publications

References 23 publications

Role of plankton communities in seaair variations in pCO2 in the SW Atlantic Ocean

Role of plankton communities in seaair variations in pCO2 in the SW Atlantic Ocean

A First Approach to Assess the Impact of Bottom Trawling Over Vulnerable Marine Ecosystems on the High Seas of the Southwest Atlantic

Metal Levels in Southern Right Whales (Eubalaena australis) from Península Valdés, Argentina

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Role of plankton communities in seaair variations in pCO2 in the SW Atlantic Ocean

Role of plankton communities in seaair variations in pCO2 in the SW Atlantic Ocean