Moosehead Lake in Maine is a beautiful lake, spanning 74,890 acres with a maximum depth of 246 feet. The most sought-after fish
to be found in Moosehead Lake are: Landlocked salmon, lake trout, brook trout, and burbot. According to Tim Obrey a regional fisheries biologist with the Maine Department of Inland Fisheries and Wildlife, the fishing at Moosehead declined from phenomenal to just "really good during the late 1980s, but has rebounded due to careful management. This table shows the populations of three major Fish in Moosehead Lake over a 30 year period. Moosehead Lake was illegally stocked with smallmouth Bass in 1970. What was the likely cause of the changes to the fish populations shown in the table above? Choose ALL that apply:
А) Bass feed on young fish.
B) Bass have no natural predators
C) Trout eventually began eating bass.
D) Bass compete with salmon and trout for food.
E) Smallmouth bass eventually overtook the lake écosystem
А) Bass feed on young fish.
B) Bass have no natural predators
C) Trout eventually began eating bass.
D) Bass compete with salmon and trout for food.
E) Smallmouth bass eventually overtook the lake écosystem
1 answer:
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