Game

Reindeer

Fish

Aquaculture

Economics and society


	Fish resources	Exploitation of fish stocks	Fish stocking research	Environment of fish		Baltic Sea Research		Regulated Rivers	Crayfish	Fish atlas

The Baltic Sea Research Programme:


»	Grey seal, cormorant and fisheries

»	Prerequisities for effective fishery on costal cyprinids

»	Mapping of fish reproduction areas

»	Harmfull substances and ecotoxicology


»	Status of the Baltic Sea, impacts and monitoring methods
	•	Integrated Assessments of the Baltic Sea: Structure of fish assemblages in the coastal waters of Finland
	•	*Population dynamics of pikeperch (Sander lucioperca)* and perch (Perca fluviatilis) in the coastal waters of Baltic Sea, Finland**
	•	Innovative approaches for marine biodiversity monitoring and assessment of conservation status of nature values in the Baltic Sea (MARMONI)

Population dynamics of pikeperch (Sander lucioperca) and perch (Perca fluviatilis) in the coastal waters of Baltic Sea, Finland

Pikeperch and perch are important catch species for commercial and recreational fisheries in the coastal waters of Finland. The environmental changes in the Baltic Sea, intensive fishing, and the increased number of predators such as grey seals and cormorants have emphasized the need of profound knowledge on the state of the fish stocks and the factors that affect their abundance.

Goals

On the basis of long-term catch samples and statistics the population size and year class strengths of the species will be estimated, and models will be developed to study the effect of environmental factors, predators and fishing.

Benefits

The results will be used for decision making on the management of fisheries and the predator stocks, aiming at a biologically and economically sustainable fishery.

Projects leader

Outi Heikinheimo

Other persons

Heikki Auvinen, Jari Raitaniemi

Duration

2010-2011

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