Pollution And Fishing Threats To Marbled Murrelets

In the summer the murrelets feed in bays inlets fjords and open ocean between 5 50 meters from the coast.

Pollution and fishing threats to marbled murrelets.

257 pollution and fishing threats to marbled murrelets d. The threats to marbled murrelets vary depending on each location but overall populations have been declining. Small schooling fish such as pacific anchovy pacific herring candlefish and pacific sand lance make up most of the diet which may include small crustaceans when fish are not abundant. Carter and katherine j.

Marbled murrelets nest in trees along the coast and the forage and winter off the coast of northern america. Threats include loss of habitat predation gill net fishing operations oil spills marine pollution and disease. Michael fry chapter 26. Pollution and fishing threats to marbled murrelets 93k d.

Marine factors that have been identified as potential threats to murrelets include overfishing pollution unattended fishing gear human population growth and associated disturbance and more recently climate change. The principal pollutant threats to marbled murrelets are chlorinated organic effluent discharges. Marbled murrelets appear to establish long term pair bonds and fidelity to nesting areas and nest trees. Marbled murrelets were assessed as threatened in canada by cosewic in 1990 and this status was confirmed.

Carter and katherine j. Michael fry chapter 26. Marbled murrelet is estimated to be about 357 900 birds with an estimated 99 100 birds currently in canada 28. Usda forest service gen.

Pollution and fishing threats to marbled murrelets d. The decline has been attributed to a number of factors including reduction and fragmentation of old growth forests. Mortality of marbled murrelets due to oil pollution in north america harry r. 261 mortality of marbled murrelets due to oil pollution in north america harry r.