Himalayan blackberries are an invasive species of low shrubs that spreads rapidly, forming dense thickets that prevent other plants from germinating. The roots of blackberries do not prevent erosion which releases sediment into the stream. The shrubs do not provide enough shade to keep water cool for salmon The number of salmon returning to spawning grounds has been declining over the past several decades. a. Predict the effect of Himalayan blackberries population on the population of native trees. b. If an ecological project proposes the removal of blackberries along a streambank to restore the salmon run, how will the effectiveness of the project be monitored? Options: A. Native trees will decline. The number of salmon will be monitored before the removal of blackberries and every year after removal B. Native trees will decline. The number of salmon will be monitored immediately after the removal of blackberries and every year after removal . С. Native trees will increase. The number of salmon will be monitored before the removal of Blackberries and every year after removal. D. Native trees will increase. The number of salmon will be monitored immediately after the removal of blackberries and every year after removal.
Himalayan blackberries are an invasive species of low shrubs that spreads rapidly, forming dense thickets that prevent other plants from germinating. The roots of blackberries do not prevent erosion which releases sediment into the stream. The shrubs do not provide enough shade to keep water cool for salmon The number of salmon returning to spawning grounds has been declining over the past several decades. a. Predict the effect of Himalayan blackberries population on the population of native trees. b. If an ecological project proposes the removal of blackberries along a streambank to restore the salmon run, how will the effectiveness of the project be monitored? Options: A. Native trees will decline. The number of salmon will be monitored before the removal of blackberries and every year after removal B. Native trees will decline. The number of salmon will be monitored immediately after the removal of blackberries and every year after removal . С. Native trees will increase. The number of salmon will be monitored before the removal of Blackberries and every year after removal. D. Native trees will increase. The number of salmon will be monitored immediately after the removal of blackberries and every year after removal.
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