Biological removal of fine-grained lithogenic particles from a large river plume

M. J. Dagg, E. P. Green, B. A. McKee, P. B. Ortner

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

The pelagic tunicate, Oikopleura dioica, feeds by non-selectively filtering particles in the size range of 0.2-20 μm. In the northern Gulf of Mexico, particulate matter in this size range contains large amounts of fine-grained lithogenic material because of the influence of the Mississippi River. During May 1992, O. dioica populations filtered between 2 and 44% (mean = 20%) of the upper 5 m each day. The filtered lithogenic particles either remain in the oikopleurid house or are defecated in fecal pellets which have high sinking velocities. Either way, the larvacean populations significantly alter the fates of fine-grained lithogenic particles in these waters and thereby enhance light penetration. The widespread occurrence of oikopleurids in coastal regions of temperate and subtropical oceans suggests they could have a significant influence on the fates of fine-grained lithogenic particles in discharge plumes of many of the world's large, sediment-laden rivers.

Original languageEnglish
Pages (from-to)149-160
Number of pages12
JournalJournal of Marine Research
Volume54
Issue number1
StatePublished - Jan 1 1996

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river plume
range size
fecal pellet
fluvial deposit
particulate matter
penetration
plume
removal
particle
ocean
river
water

ASJC Scopus subject areas

  • Oceanography

Cite this

Dagg, M. J., Green, E. P., McKee, B. A., & Ortner, P. B. (1996). Biological removal of fine-grained lithogenic particles from a large river plume. Journal of Marine Research, 54(1), 149-160.

Biological removal of fine-grained lithogenic particles from a large river plume. / Dagg, M. J.; Green, E. P.; McKee, B. A.; Ortner, P. B.

In: Journal of Marine Research, Vol. 54, No. 1, 01.01.1996, p. 149-160.

Research output: Contribution to journalArticle

Dagg, MJ, Green, EP, McKee, BA & Ortner, PB 1996, 'Biological removal of fine-grained lithogenic particles from a large river plume', Journal of Marine Research, vol. 54, no. 1, pp. 149-160.
Dagg, M. J. ; Green, E. P. ; McKee, B. A. ; Ortner, P. B. / Biological removal of fine-grained lithogenic particles from a large river plume. In: Journal of Marine Research. 1996 ; Vol. 54, No. 1. pp. 149-160.
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