Forage Fish Fact Sheet
· Islands Trust Area · Reports & Publications · 2014
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Topics: Marine & foreshore · Climate & environment — our classification, not the Trust's.
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Forage fish are extremely abundant, schooling fishes, and include herring, anchovies, smelts, and sand lance. They are an essential component of marine ecosystems, providing critical food sources for many birds and for larger fish such as salmon and ling cod which in turn are eaten by marine mammals such as sea lions and killer whales. This fact sheet focuses on surf smelt and Pacific sand lance. Surf smelt (Hypomesus pretiosus) grow to be 20–25 cm long, and feed on small organisms. They are an important food source for salmon, marine mammals and many birds. They spawn on gravel and sand beaches near the high tide line, where overhanging vegetation protects the eggs from the summer sun. Some stocks spawn during summer months, others in winter, others year-round. Surf smelt also support recreational and commercial fisheries in B.C. Pacific sand lance (Ammodytes hexapterus) are slightly smaller than surf smelt (up to 20 cm long). They live near the shore year-round and spawn on sand or pebbled beaches in the intertidal zone during the winter (November–February), often using the same beaches as the surf smelt. They bury themselves in the sea bed to avoid predators and to hibernate. Surf smelt and Pacific sand lance lay their tiny (0.5–1 mm) eggs on gravel and sand beaches from Alaska to California, including the B.C. coast. The distribution of spawning beaches in B.C. is not well known, but the Sea Watch Society (an alliance of community groups) is currently studying and mapping their distribution (https://www.facebook.com/foragefish). At Risk Forage fish populations are affected by changes to their spawning habitats. Even small modifications can lead to considerable change through time, resulting in the loss or significant degradation of these habitats. Hardening of the foreshore with structures such as seawalls, boulder structures (riprap), groynes, and boat Environmental Guidelines for Urban and Rural Land Development in British Columbia Coastal Forage Fish FACT SHEET #21 Are you planning any development on your property? If your property is adjacent to gravel or sand beaches, it may support critical habitat features for coastal forage fish. This fact sheet will provide you with important information about complying with the law and protecting these species while still benefiting from the enjoyment and value of your property. March 2014 Develop with Care 2014 Sand lance make up at least 50% of the diet of an adult Chinook salmon ramps affect beach sediment drift, leading to sediment loss and degrading spawning habitat quality. Loss of trees and other shoreline vegetation removes shade that keeps summer surf smelt eggs cool and affects the food supply for juvenile salmon. Although walking on the beach does not damage the eggs, vehicles and ATVs can harm the spawning deposits. Pollutants from stormwater runoff or leaking septic fields and changes to stream flows can affect the quality of
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