Sökning: "Size-selective mortality"

Hittade 2 uppsatser innehållade orden Size-selective mortality.

1. 1. Increased body growth rates of northern pike (Esox lucius) in the Baltic Sea : importance of size-selective mortality and warming waters

   Master-uppsats, SLU/Dept. Of Aquatic Resources

   Författare :Terese Berggren; [2019]
   Nyckelord :Northern pike; Esox lucius; Back-calculated length; Body growth; Size-selective mortality; Warming waters; Baltic Sea;

   Sammanfattning : The northern pike, Esox lucius Linnaeus (1758), is a highly valuable species in recreational fishing, and plays a vital role as a keystone predator in the structuring of fish communities in temperate lakes and brackish waters. Ma-jor declines of pike in the Baltic Sea have been recorded, particular of larger pikes, which may have cascading effects on abundances of lower ecosys-tem compartments. LÄS MER

3. 2. Selective fishing gear : A review on the effects of selective fishing gear on cod in the Baltic Sea

   Kandidat-uppsats, Institutionen för biologi och miljö (BOM)

   Författare :Karl Johan Modig; [2013]
   Nyckelord :Baltic Sea; Atlantic cod Gadus morhua ; fishing mortality; fisheries induced evolution;

   Sammanfattning : The populations of Atlantic cod (Gadus morhua) in the Baltic Sea has been heavily exploited for decades, with fishing mortalities close to, and for several occasions, even above one. The larger part of the spawning stock biomass is consequently being removed each year. LÄS MER