Does Phaeocystis spp. contribute significantly to vertical export of organic carbon?

Reigstad, Marit; Wassmann, Paul

doi:10.1007/s10533-007-9093-3

Cited by 72 publications

(57 citation statements)

References 51 publications

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“…The Rousseau relationship results in 9.6 ng C colony −1 , whereas the Van Rijssel relationship would lead to 58 ng C colony −1 for this species. Prior to the publication of Verity et al (2007), the contribution of mucus carbon to total carbon per cell for P. pouchetii was done using the Rousseau et al (1990) and Mathot et al (2000) or the Van Rijssel et al (1997) formulations (Reigstad and Wassmann, 2007). Using these relationships, Reigstad and Wassmann (2007) find a much lower contribution of mucus (10 %) to total carbon per cell than what we find using Verity et al (2007, 96.9 %).…”

Section: Discussionmentioning

confidence: 71%

“…Three of the six recognised Phaeocystis species are known to form massive blooms of gelatinous colonies (Medlin and Zingone, 2007), which may contribute significantly to carbon export (Riebesell et al, 1995;DiTullio et al, 2000), although recent observations suggest that the contribution of Phaeocystis spp. to vertical flux of organic matter is small (Reigstad and Wassmann, 2007). In addition, Phaeocystis cells are important producers of dimethylsulphoniopropionate (DMSP), which is the marine precursor of the trace gas dimethylsulphide (DMS).…”

Section: Introductionmentioning

confidence: 99%

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Global marine plankton functional type biomass distributions: <i>Phaeocystis</i> spp.

Vogt¹,

O'Brien²,

Peloquin³

et al. 2012

Earth Syst. Sci. Data

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Abstract. The planktonic haptophyte Phaeocystis has been suggested to play a fundamental role in the global biogeochemical cycling of carbon and sulphur, but little is known about its global biomass distribution. We have collected global microscopy data of the genus Phaeocystis and converted abundance data to carbon biomass using species-specific carbon conversion factors. Microscopic counts of single-celled and colonial Phaeocystis were obtained both through the mining of online databases and by accepting direct submissions (both published and unpublished) from Phaeocystis specialists. We recorded abundance data from a total of 1595 depth-resolved stations sampled between 1955-2009. The quality-controlled dataset includes 5057 counts of individual Phaeocystis cells resolved to species level and information regarding life-stages from 3526 samples. 83 % of stations were located in the Northern Hemisphere while 17 % were located in the Southern Hemisphere. Most data were located in the latitude range of 50-70•

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Section: Discussionmentioning

confidence: 71%

Section: Introductionmentioning

confidence: 99%

Global marine plankton functional type biomass distributions: <i>Phaeocystis</i> spp.

Vogt¹,

O'Brien²,

Peloquin³

et al. 2012

Earth Syst. Sci. Data

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“…In contrast, inside the polynya, P. antarctica and diatoms contributed almost equally to the phytoplankton community (Lee et al, 2012). Diatoms are likely to be more prone to vertical export than are P. antarctica (Reigstad and Wassmann, 2007).…”

Section: Spatial Variation Of Poc Fluxmentioning

confidence: 92%

Sinking particle flux in the sea ice zone of the Amundsen Shelf, Antarctica

Kim¹,

Hwang²,

Kim³

et al. 2015

Deep Sea Research Part I: Oceanographic Research Papers

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a b s t r a c tWe have examined the flux, biogenic composition, and isotopic values of sinking particles collected by a time-series sediment trap deployed in the sea ice zone (SIZ) of the Amundsen Sea from January 2011 for 1 year. The major portion of the particle flux occurred during the austral summer in January and February when sea ice concentration was reduced to o 60%. Biogenic components, dominated by opal ( $ 78% of the biogenic components), accounted for over 75% of particle flux during this high-flux period. The dominant source of sinking particles shifted from diatoms to soft-tissued organisms, evidenced by high particulate organic carbon (POC) content ( 430%) and a low bio-Si/POC ratio (o 0.5) during the austral winter. CaCO 3 content and its contribution to total particle flux was low ( $ 6%) throughout the study period. Aged POC likely supplied from sediment resuspension accounted for a considerable fraction only from October to December, which was evidenced by a low radiocarbon content and relatively high (30-50%) content of the non-biogenic components. When compared with POC flux inside the Amundsen Sea polynya obtained by the US Amundsen Sea Polynya International Research Expedition (ASPIRE), the POC flux integrated over the austral summer in the SIZ was virtually identical, although the maximum POC flux was approximately half that inside the Amundsen Sea polynya. This comparatively high POC flux integrated over the austral summer in the SIZ may be caused by phytoplankton blooms persisting over a longer periods and more efficient export of organic matter potentially owing to the diatom-dominant plankton community. If this observation is a general phenomenon on the Amundsen Shelf, the role of the SIZ, compared with the polynyas, need to be examined more carefully when trying to characterize the POC export in this region.

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“…In contrast, Phaeocystis spp. have been found to retain particular organic carbon within the pelagic to a greater extent relative to diatoms (Reigstad and Wassman 2007). The occurrence of Phaeocystis sp.…”

Section: Inter-annual Variationsmentioning

confidence: 98%

Microplankton succession in a SW Greenland tidewater glacial fjord influenced by coastal inflows and run-off from the Greenland Ice Sheet

et al. 2015

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Studies of annual successions and inter-annual variations in sub-Arctic and Arctic microplankton assemblages are required in order to understand the structure and function of marine ecosystems. This study depicts the microplankton ([20 lm) structure in a sub-Arctic tidewater glacial fjord system, SW Greenland. The descriptions are based on monthly net hauls collected between January 2006 and December 2010. Two blooms, with distinctive species compositions, were identified across all years: a spring bloom and a summer/autumn bloom. In addition, the winter season-with weak stratification, deep tidal mixing, and dense coastal inflows-was characterised by a separate species composition at much lower abundance. Here, the highest variety of microplankton groups was recorded and represented by diatoms (Chaetoceros spp. and Thalassiosira spp.), silicoflagellates, dinoflagellates, and ciliates. During the spring bloom, species correlated with higher light intensities, i.e. haptophytes and diatoms (Thalassiosira spp. and Fragilariopsis spp.), dominated the microplankton assemblage. Among these, diatoms were also correlated with cooler and fresher waters influenced by springtime melt. During the summer/autumn bloom, the microplankton assemblage was mainly represented by diatoms, such as Chaetoceros spp. 'Low-saline' chrysophytes were also present. The latter bloom coincides with elevated temperatures in the fjord and renewal of nutrients due to the onset of glacial meltwater run-off from the Greenland Ice Sheet. Our study shows a yearly recurrent succession of microplankton assemblages and that the annual succession is controlled primarily by ocean-fjordglacier interactions.

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Does Phaeocystis spp. contribute significantly to vertical export of organic carbon?

Cited by 72 publications

References 51 publications

Global marine plankton functional type biomass distributions: <i>Phaeocystis</i> spp.

Global marine plankton functional type biomass distributions: <i>Phaeocystis</i> spp.

Sinking particle flux in the sea ice zone of the Amundsen Shelf, Antarctica

Microplankton succession in a SW Greenland tidewater glacial fjord influenced by coastal inflows and run-off from the Greenland Ice Sheet

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Does Phaeocystis spp. contribute significantly to vertical export of organic carbon?

Cited by 72 publications

References 51 publications

Global marine plankton functional type biomass distributions: &lt;i&gt;Phaeocystis&lt;/i&gt; spp.

Global marine plankton functional type biomass distributions: &lt;i&gt;Phaeocystis&lt;/i&gt; spp.

Sinking particle flux in the sea ice zone of the Amundsen Shelf, Antarctica

Microplankton succession in a SW Greenland tidewater glacial fjord influenced by coastal inflows and run-off from the Greenland Ice Sheet

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Resources

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Global marine plankton functional type biomass distributions: <i>Phaeocystis</i> spp.

Global marine plankton functional type biomass distributions: <i>Phaeocystis</i> spp.