The introduction of the zebra mussel into the Great Lakes by oceangoing vessels has had a significant impact on the lake ecosystem. How could such a small organism have had such a large impact?
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The introduction of the zebra mussel into the Great Lakes by oceangoing vessels has had a significant impact on the lake ecosystem. How could such a small organism have had such a large impact?
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- One direct effect of the zebra mussel invasion was a decrease in the cloudiness of the water. How did this affect species in the Hudson River ecosystem?1)The video discusses some of the factors that allowed lionfish to expand throughout the Atlantic region. Which of the following reasons were given for why the lionfish population has been able to expand so rapidly? choose all that apply a)Lionfish out-compete native fish for food b)Atlantic predatory fish don't eat lionfish c)Lionfish are able to breed more frequently than native fish d)The Atlantic region has fewer parasites that attack lionfish e)None of theseWhat is the problem of zebra mussels and invasive species in North America?
- How has the invasion of zebra mussels in the Hudson River affected 1 biotic or abiotic factor in the river ecosystem?A group of golden lion tamarins were released into their natural habitat but most did not survive. The researchers found most were very underweight, presumably due to a lack of food availability. Using the information provided above, What is a possible solution to this human impact problem before releasing more tamarins into this habitat?Shrimp fishing off the coast of Georgia was closed in 2001, due to a drastic reduction in the shrimp population. Landings of blue crab plummeted in 2002 and 2003, as five years of drought and greatly reduced freshwater flow from underground aquifers led to increased salinity in coastal estuaries. These habitats between open ocean and fresh water are “nurseries” for many marine animals. Speculate about possible causes for the decline in shrimp and blue crab populations.
- Shrimp fishing off the coast of Georgia was closed in 2001, due to a drastic reduction in the shrimp population. Landings of blue crab plummeted in 2002 and 2003, as five years of drought and greatly reduced freshwater flow from underground aquifers led to increased salinity in coastal estuaries. These habitats between open ocean and fresh water are the “nurseries’ for many marine animals. Using information you learned in this lab, speculate about possible causes for the decline in shrimp and blue crab populations.Why is shark finning used in shark fin soup can lead to the destruction of the coral reef system?A species of barnacle may be able to exploit a large volume of habitat but due to competition from other species this barnacle is confined to a smaller area within the larger volume. This area where the barnacle is acutally found is its __________. A) working space B) crevice C) fundamental niche D) realized niche E) potential niche
- Explain how humans caused the lion fish invasion.What are the potential ecological consequences of introducing a non-native aquatic species into an established freshwater ecosystem?Suchanek tracked the rate of growth of mussels when the two species had initially colonized a bare patch on the rocks (Figure 21.22). What can be concluded regarding the growth of these two species? 100 90- 80- California mussel 70- 60 blue mussel 50- 40- 30- 20- 10- 4. 12 18 20 24 28 32 36 40 Nov. 1975 patch age (months) Figure 21.22 Growth rates of two mussels in a bare rock patch in the low intertidal zone. Data points represent shell lengths of the ten largest individuals found in the patch on each sampling date. Dashed lines to the x- axis indicate estimated times of settlement and initial growth in the patch. Arrows on the growth curves indicate the smallest size at which each species may reach sexual maturity. The blue mussel appears to reach a maximum shell length, suggesting that they were outcompeted by California mussels. The California mussel colonizes the patch later but within a few months have grown to a larger size than blue mussels. The two species colonize the patch…