ScholarsArchive@OSU

Citeable URL: http://ir.library.oregonstate.edu/concern/articles/1r66j273p

To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. This is the publisher’s final pdf. The article was published by Oxford University Press and is in the public domain. The published article can be found at:  http://plankt.oxfordjournals.org/.

Descriptions

Attribute Name	Values
Creator	Du, Xiuning Peterson, William
Abstract or Summary	Filtration by adult Euphausia pacifica was measured before and during the upwelling season, using both “disappearance of chlorophyll” and “disappearance of cells” techniques. Results show that feeding rates and selectivity varied with food assemblages. Filtration rate (F) was best modeled by the Ivlev function: the average F on total Chl-a was 92 mL euphausiid⁻¹ h⁻¹, and 119 mL euphausiid⁻¹ h⁻¹ on microscopy cell counts. F averaged 36 for the <5 µm size fraction of Chl-a, 94 for the 5–20 µm fraction and 107 mL euphausiid⁻¹ h⁻¹ for the >20 µm fraction. The average F values were 155 and 163 mL euphausiid⁻¹ h⁻¹ for chain-diatoms and single diatoms, respectively, and 115 and 137 mL euphausiid⁻¹ h⁻¹ for the <40 µm and >40 µm ciliates, respectively. Ingestion rates based on total Chl-a and size fractions, total cell counts and ciliates were significantly correlated using Hollings' models (P < 0.01). Maximum daily ration was 23% body C day⁻¹ when a high food concentration (700 µC L⁻¹) was available, but over the carbon range of 50–200 µg C L⁻¹, daily ration averaged 4% body C day⁻¹. Diatoms were consumed almost exclusively during blooms associated with summer upwelling events; larger types of ciliates and dinoflagellates were fed upon preferentially compared with their smaller counterparts.
Resource Type	Article
DOI	10.1093/plankt/fbu027
Date Available	2015-03-24T16:19:11+00:00
Date Issued	2014-07
Citation	Du, X., & Peterson, W. (2014). Feeding rates and selectivity of adult Euphausia pacifica on natural particle assemblages in the coastal upwelling zone off Oregon, USA, 2010. Journal of Plankton Research, 36(4), 1031-1046. doi:10.1093/plankt/fbu027
Series	Vol. 36 no. 4 July/August 2014 Journal of Plankton Research
Keyword	Euphausia pacifica Phytoplankton Ingestion rate Filtration rate Ciliate
Rights Statement	Copyright Not Evaluated
Funding Statement (additional comments about funding)	This work was supported by the NOAA/MERHAB 2007 program project (NA07NOS4780195) (MOCHA); and the NOAA/CAMEO program (NA09NMF4720182). The research was part of the PhD Dissertation of Xiuning Du carried out with the support of the China Scholarship Council.
Publisher	Oxford University Press
Peer Reviewed	Yes
Language	English [eng]
Replaces	http://hdl.handle.net/1957/55405
Additional Information	description.provenance : Submitted by Erin Clark (erin.clark@oregonstate.edu) on 2015-03-24T16:18:53Z No. of bitstreams: 1 DuXiuningHMSCFeedingRatesSelectivity.pdf: 994290 bytes, checksum: 4ede7dd7831be46403ead4f9a7fd30b4 (MD5) description.provenance : Made available in DSpace on 2015-03-24T16:19:11Z (GMT). No. of bitstreams: 1 DuXiuningHMSCFeedingRatesSelectivity.pdf: 994290 bytes, checksum: 4ede7dd7831be46403ead4f9a7fd30b4 (MD5) Previous issue date: 2014-07 description.provenance : Approved for entry into archive by Erin Clark(erin.clark@oregonstate.edu) on 2015-03-24T16:19:11Z (GMT) No. of bitstreams: 1 DuXiuningHMSCFeedingRatesSelectivity.pdf: 994290 bytes, checksum: 4ede7dd7831be46403ead4f9a7fd30b4 (MD5)

Relationships

Parents:

This work has no parents.

Last modified

Items

Thumbnail	Title	Date Uploaded	Visibility	Actions
	DuXiuningHMSCFeedingRatesSelectivity.pdf	2017-07-26	Public	Press to Select an action Download