Distribution patterns of benthic microalgal standing stock at McMurdo Sound, Antarctica

Dayton, Paul K.; Watson, D. Fraser; Palmisano, Anna C.; Barry, James; Oliver, John S.; Rivera, Diego

doi:10.1007/bf00443397

Cited by 113 publications

(68 citation statements)

References 8 publications

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“…Based on an average growth efficiency of 11%, we estimated consumption by Sterechinus neumayeri in McMurdo Sound to be 10.9g C m -2 yr -a at C. Evans, 4.0g C m -2 yr -1 at McMurdo Station and 3.0 g C m-2 yr-1 at New Harbor (assuming 1 g AFDM = 0.5 g C). These figures correspond to 21% (C. Evans), 12% (McMurdo Station), and 30% (New Harbor) of the estimated sedimentation and benthic microalgal production (Dayton et al 1986;Knox 1990;Barry et al 1994; see also Table 1). Even if other potential food sources such as seal faeces and macroalgal debris are taken into account, S. neumayeri seems to consume a significant share of total food available to the benthos of McMurdo Sound.…”

Section: Significance Of Sterechinus Neumayeri In the Mcmurdo Systemmentioning

confidence: 71%

“…The jaws Were subsequently washed in 95% ethanol and dried. Jaw size was Barry and Dayton (1988), Barry et al (1994), Dayton and Oliver (1977), Dayton et al (1974), Dayton et al (1986), Knox (1990), McClintock et al (1988), Miller and Pearse (1991), Rivkin (1991) Knox (1990) c In austral summer measured from the tip to the upper inner edge. The position of the tetracycline mark was determined using a 350 nm UV-B lamp.…”

Section: Growth Analysismentioning

confidence: 99%

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Growth and production of Sterechinus neumayeri (Echinoidea: Echinodermata) in McMurdo Sound, Antarctica

et al. 1995

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Population dynamics of Sterechinus neumayeri were investigated at four sites in McMurdo Sound: Cape Evans, McMurdo Station, East Cape Armitage and New Harbor. The annual formation of natural growth bands in the jaws of the Aristotle's lantern was verified by a tagging-recapture experiment. Growth functions based on natural growth bands indicated differences among stations but showed S. neumayeri to be a slow growing species, reaching its maximum diameter of 70mm at an age of about 40 yr. Annual production ranged between 2.4 (C. Evans) and 0.65 g ash free dry mass m-2 (New Harbor) and was related to differences in food conditions. More than 95% of total production was invested in reproduction, and less than 5% was invested in somatic growth. Consumption estimates for S. neumayeri showed this species to play a significant role in the benthic trophic web of McMurdo Sound.

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Section: Significance Of Sterechinus Neumayeri In the Mcmurdo Systemmentioning

confidence: 71%

Section: Growth Analysismentioning

confidence: 99%

Growth and production of Sterechinus neumayeri (Echinoidea: Echinodermata) in McMurdo Sound, Antarctica

et al. 1995

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“…Dayton et al 1986, Perrin et al 1987, Brandini & Rebello 1994, because micro-and nanoplanktonic microalgal assemblages change considerably during austral summer. The changes are probably a cause of influences such as local wind and tide (Brandini & Rebello 1994).…”

Section: Introductionmentioning

confidence: 99%

“…Benthic microalgae such as sediment-living diatoms, epiphytic, and epilithic forms are also common in nearshore environments (Heywood & Whitaker 1984). There have been a few studies on microphytobenthic algae, but investigations in the Antarctic and Arctic regions suggest that these microalgae may be important in primary production at certain times of the year (Horner & Schrader 1982, Dayton et al 1986. Suspended benthic diatoms may contribute significantly to total primary production (Picken 1985, Klöser et al 1994, Ahn et al 1997, and benthic diatoms are assumed to be an important food source for benthic animals (Berkman et al 1986, Ligowski 1983.…”

Section: Introductionmentioning

confidence: 99%

Seasonal variation of microalgal assemblages at a fixed station in King George Island, Antarctica, 1996

Kang¹,

Kang²,

Lee³

et al. 2002

Mar. Ecol. Prog. Ser.

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Microalgal assemblages were measured daily from January to December 1996 at a fixed neritic station in Marian Cove, King George Island, Antarctica. The abundance of microalgae and carbon biomass exhibited clear seasonal variation. Annual mean of total microalgal abundance in surface water was 2.43 × 10 4 cells l -1. Microalgal cell abundance in Marian Cove showed a multimodal distribution of standing crop during the study period. Microalgae started to bloom in October and increased abruptly during November. More than 45% (avg. 3.5 mg m -3 ) of chl a was present in the 2 months November and December, dominated by microplanktonic diatoms (> 20 µm) such as Fragilaria striatula Lyngbye, Licmophora belgicae Peragallo, and Achnanthes groenlandica Grunow. The increase of these diatoms were mainly due to resuspension of benthic microalgae by wind and tidal currents in spring and summer. In contrast, microalgal assemblages in winter were characterized by the dominance of pico-and nanoplanktonic microalgae (< 20 µm) such as Phaeocystis antarctica Karsten, Navicula glaciei Van Heurck, and Navicula perminuta Grunow.

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“…The shallow benthic soft-bottom communities of western McMurdo Sound, Antarctica (77" 34' S, 166" 39' E) are considered nutrient limited (Dayton et al 1986: chl a levels are approximately a n order of magnitude lower than in eastern McMurdo Sound) and characterized by low flow (Barry & Dayton 1988, Gooday et al 1996: flow <. 1 cm S -' ) (Dayton et al 1994, M. Slattery pers.…”

mentioning

confidence: 99%

Deposit feeding:a novel mode of nutrition in the Antarctic colonial soft coral Gersemia antarctica

Slattery¹,

Jb²,

Ss³

1997

Mar. Ecol. Prog. Ser.

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The colonlal nephtheid soft coral Gersemla antarctjca IS a deposit feeder In the soft sedlment communities of McMurdo Sound, Antarctica. This feeding strategy involves coordinated bending of the entire colony against the substrate and is previously undescribed among soft corals. Gut content analyses indlcate a mixed diet that includes benthlc diatoms, foraminiferans, and particulate 01-ganic matter Soft coral colomes move per~odlcally in an 'inch worm' fashion, presumably to exploit und~sturbed sedlments. In fact. when colonies encounter previously grazed sediment they contract from the substrate almost immediately. This feeding strategy has l~kely evolved to supplement the capture of planktonic prey and is of particular importance in the Antarctic, and potentially the deep sea, where water column productivity is seasonally constrained.

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Distribution patterns of benthic microalgal standing stock at McMurdo Sound, Antarctica

Cited by 113 publications

References 8 publications

Growth and production of Sterechinus neumayeri (Echinoidea: Echinodermata) in McMurdo Sound, Antarctica

Growth and production of Sterechinus neumayeri (Echinoidea: Echinodermata) in McMurdo Sound, Antarctica

Seasonal variation of microalgal assemblages at a fixed station in King George Island, Antarctica, 1996

Deposit feeding:a novel mode of nutrition in the Antarctic colonial soft coral Gersemia antarctica

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