Ecology Summary - Euphausia pacifica

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Ecology of Euphausia pacifica

Main Ref.	Boden, B.P., M.W. Johnson and E. Brinton, 1955
Remarks	Able to feed from suspension either unicellular algae or small nauplii such as Artemia sp. Generally, feeding occurs at night and is confined to the upper 100 m (Ref. 104683). Shows an omnivorous feeding habit, with trophic level (=2.5) based on δ15N values (Ref. 118314).

Aquatic zones / Water bodies

	Marine - Neritic	Marine - Oceanic	Brackishwater	Freshwater
Marine zones / Brackish and freshwater bodies	supra-littoral zone littoral zone sublittoral zone	epipelagic mesopelagic epipelagic abyssopelagic hadopelagic	estuaries/lagoons/brackish seas mangroves marshes/swamps	rivers/streams lakes/ponds caves exclusively in caves

Highighted items on the list are where Euphausia pacifica may be found.

Habitat

Substrate	Pelagic;
Substrate Ref.
Special habitats
Special habitats Ref.

Associations

Ref.	Boden, B.P., M.W. Johnson and E. Brinton, 1955
Associations
Associated with
Association remarks
Parasitism

feeding

Feeding type	plants/detritus+animals (troph. 2.2-2.79)
Feeding type Ref.	Lasker, R., 1966
Feeding habit	filtering plankton
Feeding habit Ref.	Lasker, R., 1966

Trophic Level(s)

Estimation method	original sample		unfished population		Remark
Estimation method	Troph	s.e.	Troph	s.e.	Remark
From diet composition
From individual food items	2.32	0.15			Trophic level estimated from a number of food items using a randomized resampling routine.
Ref.

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