Ecology Summary - Calanus finmarchicus

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Ecology of Calanus finmarchicus

Main Ref.	Markowski, S., 1962
Remarks	In the North Sea, considered one of the largest and important boreal copepod, whose densities are highly influenced by sea surface temperature changes (Ref. 95710). Various stages of the species is present up to depths of 3000 m (males Ref. 78136) and different copepodite stages occupy different depth ranges (4th and 5th copepodite at depths 50-300 m from Ref. 78125). This species displays diel vertical migration and is concentrated in the upper water at night (Ref. 96408). Also from Refs. 78130 and 78143.

Main Ref.

Markowski, S., 1962

Remarks

In the North Sea, considered one of the largest and important boreal copepod, whose densities are highly influenced by sea surface temperature changes (Ref. 95710). Various stages of the species is present up to depths of 3000 m (males Ref. 78136) and different copepodite stages occupy different depth ranges (4th and 5th copepodite at depths 50-300 m from Ref. 78125). This species displays diel vertical migration and is concentrated in the upper water at night (Ref. 96408). Also from Refs. 78130 and 78143.

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 Calanus finmarchicus may be found.

Habitat

Substrate	Pelagic;
Substrate Ref.	Tande, K.S., 1989
Special habitats
Special habitats Ref.

Associations

Ref.
Associations
Associated with
Association remarks
Parasitism

feeding

Feeding type	plants/detritus+animals (troph. 2.2-2.79)
Feeding type Ref.	Meyer-Harms, B., X. Irigoien, R. Head and R. Harris, 1999
Feeding habit	selective plankton feeding
Feeding habit Ref.	Meyer-Harms, B., X. Irigoien, R. Head and R. Harris, 1999

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	2.37	0.20			Trophic level estimated from a number of food items using a randomized resampling routine.
Ref.

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