The zooplankton of Marguerite Bay, Western Antarctic Peninsula—Part I: Abundance, distribution, and population response to variability in environmental conditions

Marrari, Marina; Daly, Kendra L.; Timonin, A. G.; Semenova, T. N.

doi:10.1016/j.dsr2.2010.12.007

Cited by 33 publications

(21 citation statements)

References 57 publications

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“…This is also the region where simulated particles that correspond to furcilia 6 larvae accumulate. Marrari et al (2011) and Ashjian et al (2004) also observed high abundance and biomass of ju ve nile and adult krill in Laubeuf Fjord during fall 2001. The video plankton recorder observations from the 2001 fall and winter surveys show ed larval krill were present across the entire shelf with high abun dances at the shelf break (Ashjian et al 2008).…”

Section: Local Spawning and Export From The Shelfmentioning

confidence: 97%

Modeling the remote and local connectivity of Antarctic krill populations along the western Antarctic Peninsula

Piñones¹,

Hofmann²,

Daly³

et al. 2013

Mar. Ecol. Prog. Ser.

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Section: Local Spawning and Export From The Shelfmentioning

confidence: 97%

Modeling the remote and local connectivity of Antarctic krill populations along the western Antarctic Peninsula

Piñones¹,

Hofmann²,

Daly³

et al. 2013

Mar. Ecol. Prog. Ser.

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“…More infrequently, other studies have quantified zooplankton distribution during other seasons (e.g., Southern Ocean Global Ocean Ecosystems Dynamics studies in fall and winter 2002;Ashjian et al 2004, Marrari et al 2011. The dominant macrozooplankton along the WAP include krill, salps, pteropods, and copepods, with broad patterns in zooplankton community structure reflecting cross-shelf zones and latitude as well as water masses and sea ice conditions (Ashjian et al Ross et al 2008, Ducklow et al 2012.…”

Section: Contribution Of Different Taxa To Fecal Pellet Fluxmentioning

confidence: 99%

Time series of vertical flux of zooplankton fecal pellets on the continental shelf of the western Antarctic Peninsula

Gleiber¹,

Steinberg²,

Ducklow³

2012

Mar. Ecol. Prog. Ser.

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Zooplankton fecal pellet contribution to particulate organic carbon (POC) flux over the continental shelf of the western Antarctic Peninsula (WAP) was investigated to better understand the possible effects of changes in zooplankton community structure, due to climate change, on carbon export. Fecal pellets were collected at 170 m depth in a moored sediment trap from January 2004 to January 2009. Fecal pellet shape and size (i.e., carbon content) were quantified to assess flux of pellets from different zooplankton taxa and compared between seasons and years. Fecal pellet POC constituted the dominant proportion of total POC flux, with summer (November to April) pellet POC flux (67%) significantly higher than winter (May to October) pellet POC flux (34%), while phytodetritus or fecal 'fluff' constituted the remainder. Cylindrical euphausiid pellets contributed to a monthly mean of 72% of total fecal pellet flux; ovoid copepod and tabular salp pellets contributed significantly less (22 and 6%, respectively). Cylindrical and ovoid pellet export was significantly higher in summer, while 48% of tabular pellet flux occurred in winter. Tabular pellets had the highest carbon content (median = 1.03 µgC pellet ) and ovoid (0.04 µgC pellet −1 ) pellets. As krill fecal pellets are the dominant component of particle export in the WAP, we hypothesize that a decrease in krill and increase in salps in the region could alter the export of POC to the deep sea.KEY WORDS: Southern Ocean · Particle flux · Sediment trap · Krill · Salp · Copepod · Climate Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 471: [23][24][25][26][27][28][29][30][31][32][33][34][35][36] 2012 variable sinking rates of 16 to 1218 m d −1 (Turner 2002, Atkinson et al. 2012). Copepods produce ellipsoid or ovoid pellets. They have round or pointed ends and are encased in a peritrophic membrane that makes the pellets more resistant to bacterial degradation and breakage (Gauld 1957, Yoon et al. 2001, Köster et al. 2011. Copepod fecal pellet sinking rates range from 5 to 220 m d −1 (Turner 2002, Møller et al. 2011, Patonai et al. 2011. Salps are indiscriminate feeders that produce very large, fast-sinking (42 to 2700 m d −1 ) 'fecal flakes' that greatly enhance the efficiency of POC transport to depth (Anderson 1998, Madin & Deibel 1998, Yoon et al. 2001, Phillips et al. 2009).Long-term zooplankton time series from a variety of environments indicate that climate is changing zooplankton community structure (Richardson 2008 and that these changes can lead to changes in the efficiency of the biological pump . The western Antarctic Peninsula (WAP) is experiencing one of the most rapid rates of warming on Earth; since 1950, the annual mean air temperature has increased by 2°C, with average mid-winter temperatures rising by 6°C (Vaughan et al. 2003, Ducklow et al. 2012. As a result, the WAP is changing from a cold, dry, polar climate to a warm, humid, maritime climate (Ducklow et al. 2012), with a 40% decrease in s...

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“…Larval Euphausia superba feeding and growth during fall 2001 were similar to summer rates (Pakhomov et al, 2004). Thysanoessa macrura, which develops relatively rapidly from larval to juvenile stages between spring and fall, was the most abundant euphausiid during 2001 (Marrari et al, 2011a (Daly, 2004). At this high latitude, the late formation of sea ice and declining irradiance did not allow sea ice biota to accumulate sufficiently to support larval feeding throughout the winter.…”

Section: Regional Zoopl Ankton Popul Ation Dynamics Southern Oceanmentioning

confidence: 84%

“…It is also a region of rapid warming (Vaughan and Doake, 1996) and sea Dorman et al (2011) ice decline (Stammerjohn et al, 2012), (Marrari et al, 2008(Marrari et al, , 2011a. Copepod abundances were highest during 2001 (Marrari et al, 2011a) and larval Antarctic krill abundances were among the highest ever recorded (Daly, 2004).…”

Section: Regional Zoopl Ankton Popul Ation Dynamics Southern Oceanmentioning

confidence: 99%

Climate Impacts on Zooplankton Population Dynamics in Coastal Marine Ecosystems

Batchelder¹,

Daly²,

Davis³

et al. 2013

oceanog

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The zooplankton of Marguerite Bay, Western Antarctic Peninsula—Part I: Abundance, distribution, and population response to variability in environmental conditions

Cited by 33 publications

References 57 publications

Modeling the remote and local connectivity of Antarctic krill populations along the western Antarctic Peninsula

Modeling the remote and local connectivity of Antarctic krill populations along the western Antarctic Peninsula

Time series of vertical flux of zooplankton fecal pellets on the continental shelf of the western Antarctic Peninsula

Climate Impacts on Zooplankton Population Dynamics in Coastal Marine Ecosystems

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