FN Archimer Export Format
PT J
TI Feeding on dispersed vs. aggregated particles: The effect of zooplankton feeding behavior on vertical flux
BT 
AF KOSKI, Marja
   BOUTORH, Julia
   DE LA ROCHA, Christina
AS 1:1;2:2;3:2;
FF 1:;2:;3:;
C1 Tech Univ Denmark, Natl Inst Aquat Resources, Bldg 202, Lyngby, Denmark.
   Univ Bretagne Occidentale, CNRS UMR 6539, Inst Univ Europeen Mer, Technopole Brest Iroise, Pl Nicholas Copernic, Plouzane, France.
C2 UNIV TECH DENMARK, DENMARK
   UBO, FRANCE
UM LEMAR
IN DOAJ
IF 2.766
TC 22
UR https://archimer.ifremer.fr/doc/00616/72820/72427.pdf
   https://archimer.ifremer.fr/doc/00616/72820/72428.jpg
LA English
DT Article
AB Zooplankton feeding activity is hypothesized to attenuate the downward flux of elements in the ocean. We investigated whether the zooplankton community composition could influence the flux attenuation, due to the differences of feeding modes (feeding on dispersed vs. aggregated particles) and of metabolic rates. We fed 5 copepod species-three calanoid, one harpacticoid and one poecilamastoid-microplankton food, in either dispersed or aggregated form and measured rates of respiration, fecal pellet production and egg production. Calanoid copepods were able to feed only on dispersed food; when their food was introduced as aggregates, their pellet production and respiration rates decreased to rates observed for starved individuals. In contrast, harpacticoids and the poecilamastoid copepod Oncaea spp. were able to feed only when the food was in the form of aggregates. The sum of copepod respiration, pellet production and egg production rates was equivalent to a daily minimum carbon demand of ca. 10% body weight-(1) for all non-feeding copepods; the carbon demand of calanoids feeding on dispersed food was 2-3 times greater, and the carbon demand of harpacticoids and Oncaea spp. feeding on aggregates was >7 times greater, than the resting rates. The zooplankton species composition combined with the type of available food strongly influences the calculated carbon demand of a copepod community, and thus also the attenuation of vertical carbon flux. 
PY 2017
PD MAY
SO Plos One
SN 1932-6203
PU Public Library Science
VL 12
IS 5
UT 000401487700100
DI 10.1371/journal.pone.0177958
ID 72820
ER

EF