Ichthyoplankton Associated with a Warm Core Ring off the Scotiars Shelf

Wroblewski, Joe; Cheney, Jerry

doi:10.1139/f84-034

Cited by 39 publications

(24 citation statements)

References 11 publications

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“…1) selected to provide a variety of environments. These included 2 coastal stations, SS 26 and 29, 2 stations over the slope region, SS 9 and 55, and a station, SS 13, near the center of a warm core Gulf Stream ring (82-G;Wroblewski & Cheney 1984). During the sampling period, temperature and salinity were 6.5"C aiid 31.5?L at the coastal staticcs; 7.5 to 10°C and 32.2 to 33.0%0 at the slope stations; and 19.5 "C and 36.0 % at the eddy station.…”

Section: Methodsmentioning

confidence: 99%

Microautoradiography-based enumeration of bacteria with estimates of thy-midine-specific growth and production rates

Douglas¹,

Novitsky²,

Fournier³

1987

Mar. Ecol. Prog. Ser.

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Section: Methodsmentioning

confidence: 99%

Microautoradiography-based enumeration of bacteria with estimates of thy-midine-specific growth and production rates

Douglas¹,

Novitsky²,

Fournier³

1987

Mar. Ecol. Prog. Ser.

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“…Models evaluating the hydrographic effects of eddy on island waters (Farmer and Berg 1989) have explained the dispersal of larvae due to high-velocity shear currents generated by the approaching eddy. Cross-frontal advection has been documented for cold core and warm core eddies (Wiebe and Flierl 1983;Wroblewski and Cheney 1984). Fast currents generated by eddies, tidal and ocean currents and gyres, quite close to coral islands are considered as physical factors that induce local water movements, flush toxins and remove thermal stratification in coral reef locations and hence are assumed as high reliability factors of resistance to coral bleaching (West and Salm 2003).…”

Section: Discussionmentioning

confidence: 99%

Tropical storm off Myanmar coast sweeps reefs in Ritchie’s Archipelago, Andaman

Krishnan

George

Vikas³

et al. 2012

Environ Monit Assess

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The reefs in some islands of Andaman and Nicobar suffered severe damage following a tropical storm in the Bay of Bengal off Myanmar coast during 13-17 March 2011. Surveys were conducted at eight sites in Andaman, of which five were located in the Ritchie's Archipelago where maximum wind speeds of 11 ms -1 was observed; and three around Port Blair which lay on the leeward side of the storm and had not experienced wind speeds of more than 9 ms -1 . Corals in the shallow inshore reefs were broken and dislodged by the thrust of the waves. Significant damage in the deeper regions and offshore reefs were caused by the settlement of debris and sand brought down from the shallower regions. The fragile branching corals (Acropora sp.) were reduced to rubbles and the larger boulder corals (Porites sp.) were toppled over or scarred by falling debris. The reefs on the windward side and directly in the path of the storm winds were the worst affected. The investigation exposes the vulnerability of the reefs in Andaman to the oceanographic features which generally remain unnoticed unless the damage is caused to the coastal habitats.

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“…However, their impact on the biological community can be significant, by transporting biota into the region as food supplies, or transporting larvae out of this region. On the east coast of North America, meandering fronts along the shelf break create rings and eddies which carry large volumes of waters offshelf into the Sargasso Sea, significantly reducing the successful recruitment of fish species on the shelf (Wroblewski & Cheney 1984). Meanders and eddies also exist in our study area.…”

mentioning

confidence: 92%

Interactions between biological and environmental structures along the coast of northern Norway

Fossheim¹,

Zhou²,

Tande³

et al. 2005

Mar. Ecol. Prog. Ser.

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Spatial and temporal variability in physical conditions off the northern coast of Norway may affect the 3D distribution of mesozooplankton and capelin larvae (Mallotus villosus Müller) during the early capelin recruitment period. To monitor distribution patterns, we sampled the water masses down to 100 m on 3 successive occasions in May 2001 with a SCANFISH-OPC-CTD-F platform. We found distinct differences between coastal and oceanic waters in the study area. The water masses were most clearly distinguished by salinity and there was a tendency for higher zooplankton abundance and biomass in water of oceanic origin. Our study area was characterised by mesoscale eddies, translating in an easterly direction which follow the Norwegian Coastal Current. Cyclonic eddies contained oceanic water, high zooplankton abundance and biomass, whereas anti-cyclonic eddies contained water masses of coastal origin and low abundance of zooplankton. The eddies found in the spawning and hatching habitat of capelin were relatively small and of short duration; however, their impact on the biological community in terms of mediating exchange of biotas across the shelf can be significant. KEY WORDS: Optical plankton counter · Eddy · Barents Sea · Capelin larvae Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 300: [147][148][149][150][151][152][153][154][155][156][157][158] 2005 (Lobel & Robinson 1986, Boehlert et al. 1992, Bograd et al. 1994, Rodriguez et al. 2001, Halvorsen et al. 2003 and affect the biological productivity of coastal regions (Rey 1981, Kimura et al. 1997, Kasai et al. 2002). An eddy can concentrate buoyant passive materials when its secondary circulation converges. This mechanism may aggregate patches of plankton in confined areas and may provide favourable retention areas (Halvorsen et al. 2003). A divergent eddy on the other hand may increase primary production due to the upwelling of nutrient-rich deep water to the euphotic surface layer, which may further enhance zooplankton production (Kimura et al. 1997, Nakata et al. 2000.Abundant fish larvae have previously been observed in both cyclonic and anti-cyclonic (Schumacher et al. 1993) eddies. Canino et al. (1991) suggested that feeding and survival conditions may be better in eddies. Bograd et al. (1994) found that larvae retained within an eddy had a lower mortality rate than elsewhere. It has also been hypothesised that retention in eddies, that move downstream at slower rates than mean currents (Bograd et al. 1994), aid in delivering larvae to the nurseries. Eddies may aid in retention of fish larvae in coastal areas (Kasai et al. 2002) and may decrease the likelihood of them being transported into the oceanic regime (Bograd et al. 1994), or may function as a transport mechanism from coastal areas to offshore nursery grounds (Komatsu et al. 2002). Eddies are also important for larvae in helping them to avoid excessive transport (i.e. currents may carry them away from the nurseries) by retaining them in ...

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Ichthyoplankton Associated with a Warm Core Ring off the Scotiars Shelf

Cited by 39 publications

References 11 publications

Microautoradiography-based enumeration of bacteria with estimates of thy-midine-specific growth and production rates

Microautoradiography-based enumeration of bacteria with estimates of thy-midine-specific growth and production rates

Tropical storm off Myanmar coast sweeps reefs in Ritchie’s Archipelago, Andaman

Interactions between biological and environmental structures along the coast of northern Norway

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