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Carbon transfer in herbivore- and microbial loop-dominated pelagic food webs in the southern Barents Sea during spring and summer

Frederik De Laender UGent, Dick Van Oevelen, Jack Middelburg and Karline Soetaert UGent (2010) MARINE ECOLOGY-PROGRESS SERIES. 398. p.93-107
abstract
We compared carbon budgets between a herbivore - domina led and a microbial loop-dominated food web and examined the implications of food web structure for fish production. We used the southern Barents Sea as a case study and inverse modelling as an analysis method. In spring, when the system was dominated by the herbivorous web, the diet of protozoa consisted of similar amounts of bacteria and phytoplankton. Copepods showed no clear preference for protozoa. Cod Gadus morhua, a predatory fish preying on copepods and on copepod-feeding capelin Mallotus villosus in spring, moderately depended on the microbial loop in spring, as only 20 to 60% of its food passed through the microbial loop. In summer, when the food web was dominated by the microbial loop, protozoa ingested 4 times more bacteria than phytoplankton and protozoa formed 80 to 90%, of the copepod diet. Because of this strong link between the microbial loop and copepods (the young cod's main prey item) young cod (< 3 yr) depended more on the microbial loop than on any other food web compartment, as > 60% of its food passed through the microbial loop in summer. Adult cod (<= 3 yr) relied far less on the microbial loop than young cod as it preyed on strictly herbivorous krill in summer. Food web efficiency for fish production was comparable between seasons (similar to 5 x 10(-4)) and 2 times higher in summer (5 x 10(-2)) than in spring for copepod production.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (review)
publication status
published
subject
keyword
Microbial loop, Food web, Protozoa, Copepods, Gadus morhua, DISSOLVED ORGANIC-CARBON, NORTHEAST ARCTIC COD, MARGINAL ICE-ZONE, GADUS-MORHUA L, POPULATION-DYNAMICS, SEASONAL-VARIATION, ATLANTIC COD, HETEROTROPHIC BACTERIAL, ZOOPLANKTON COMMUNITY, CALANUS-FINMARCHICUS
journal title
MARINE ECOLOGY-PROGRESS SERIES
Mar. Ecol.-Prog. Ser.
volume
398
pages
93 - 107
Web of Science type
Review
Web of Science id
000273968500007
JCR category
MARINE & FRESHWATER BIOLOGY
JCR impact factor
2.483 (2010)
JCR rank
12/92 (2010)
JCR quartile
1 (2010)
ISSN
0171-8630
DOI
10.3354/meps08335
language
English
UGent publication?
no
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
1191654
handle
http://hdl.handle.net/1854/LU-1191654
date created
2011-03-18 10:41:21
date last changed
2016-12-19 15:38:17
@article{1191654,
  abstract     = {We compared carbon budgets between a herbivore - domina led and a microbial loop-dominated food web and examined the implications of food web structure for fish production. We used the southern Barents Sea as a case study and inverse modelling as an analysis method. In spring, when the system was dominated by the herbivorous web, the diet of protozoa consisted of similar amounts of bacteria and phytoplankton. Copepods showed no clear preference for protozoa. Cod Gadus morhua, a predatory fish preying on copepods and on copepod-feeding capelin Mallotus villosus in spring, moderately depended on the microbial loop in spring, as only 20 to 60\% of its food passed through the microbial loop. In summer, when the food web was dominated by the microbial loop, protozoa ingested 4 times more bacteria than phytoplankton and protozoa formed 80 to 90\%, of the copepod diet. Because of this strong link between the microbial loop and copepods (the young cod's main prey item) young cod ({\textlangle} 3 yr) depended more on the microbial loop than on any other food web compartment, as {\textrangle} 60\% of its food passed through the microbial loop in summer. Adult cod ({\textlangle}= 3 yr) relied far less on the microbial loop than young cod as it preyed on strictly herbivorous krill in summer. Food web efficiency for fish production was comparable between seasons (similar to 5 x 10(-4)) and 2 times higher in summer (5 x 10(-2)) than in spring for copepod production.},
  author       = {De Laender, Frederik and Van Oevelen, Dick and Middelburg, Jack and Soetaert, Karline},
  issn         = {0171-8630},
  journal      = {MARINE ECOLOGY-PROGRESS SERIES},
  keyword      = {Microbial loop,Food web,Protozoa,Copepods,Gadus morhua,DISSOLVED ORGANIC-CARBON,NORTHEAST ARCTIC COD,MARGINAL ICE-ZONE,GADUS-MORHUA L,POPULATION-DYNAMICS,SEASONAL-VARIATION,ATLANTIC COD,HETEROTROPHIC BACTERIAL,ZOOPLANKTON COMMUNITY,CALANUS-FINMARCHICUS},
  language     = {eng},
  pages        = {93--107},
  title        = {Carbon transfer in herbivore- and microbial loop-dominated pelagic food webs in the southern Barents Sea during spring and summer},
  url          = {http://dx.doi.org/10.3354/meps08335},
  volume       = {398},
  year         = {2010},
}

Chicago
De Laender, Frederik, Dick Van Oevelen, Jack Middelburg, and Karline Soetaert. 2010. “Carbon Transfer in Herbivore- and Microbial Loop-dominated Pelagic Food Webs in the Southern Barents Sea During Spring and Summer.” Marine Ecology-progress Series 398: 93–107.
APA
De Laender, F., Van Oevelen, D., Middelburg, J., & Soetaert, K. (2010). Carbon transfer in herbivore- and microbial loop-dominated pelagic food webs in the southern Barents Sea during spring and summer. MARINE ECOLOGY-PROGRESS SERIES, 398, 93–107.
Vancouver
1.
De Laender F, Van Oevelen D, Middelburg J, Soetaert K. Carbon transfer in herbivore- and microbial loop-dominated pelagic food webs in the southern Barents Sea during spring and summer. MARINE ECOLOGY-PROGRESS SERIES. 2010;398:93–107.
MLA
De Laender, Frederik, Dick Van Oevelen, Jack Middelburg, et al. “Carbon Transfer in Herbivore- and Microbial Loop-dominated Pelagic Food Webs in the Southern Barents Sea During Spring and Summer.” MARINE ECOLOGY-PROGRESS SERIES 398 (2010): 93–107. Print.