Chesapeake Bay Ecosystem Challenges

The video discusses the role of underwater grasses in the Chesapeake Bay ecosystem, highlighting their importance as indicators of environmental health. It covers the impact of climate change, including temperature changes and runoff, on these grasses. The video also details research methods used to study grass beds and recent observations of their condition. Strategies to improve water clarity and support grass growth are suggested, emphasizing the reduction of sediments and nutrients to enhance light availability for these plants.

What role do underwater grasses play in the Chesapeake Bay ecosystem?

• They are primarily decorative.

• They are used for human consumption.

• They serve as a habitat and food source for various animals.

• They are a major source of oxygen.

Why do underwater plants in the Chesapeake Bay require more light than other plants?

• They grow faster than other plants.

• They are located deeper underwater.

• They have a unique photosynthesis process.

• They are more sensitive to light changes.

What was the significant impact of Tropical Storm Agnes on the Chesapeake Bay?

• It improved water clarity.

• It increased the number of fish species.

• It caused a decrease in water temperature.

• It introduced a large amount of nutrients and sediments.

How might climate change affect the lower Bay compared to the upper Bay?

• It will have a more positive effect on the lower Bay.

• It will affect both equally.

• It will have a more negative effect on the lower Bay.

• It will not affect the lower Bay.

What method is used to monitor the abundance of underwater grasses?

• Diving expeditions

• Transects

• Aerial surveys

• Satellite imaging

What caused the die-off of eelgrass in the lower Bay last year?

• Decreased water temperature

• Significant rainfall and increased turbidity

• Lack of nutrients

• Increased salinity

What is the best strategy to support underwater grasses in the face of climate change?

• Increase water temperature

• Introduce more plant species

• Improve water clarity by reducing sediments and nutrients

• Increase the number of fish species

How many species of underwater plants are found in the freshwater areas of the Bay?

• Ten to twelve

• Two

• Fifteen to sixteen

• Five to six

What has contributed to the rebound of freshwater plants in the Bay?

• Increased fish population

• Reduced nutrients and sediments

• More frequent storms

• Higher water temperatures

What is the overall outlook for the Chesapeake Bay's ecosystem?

• It is beyond recovery.

• It is deteriorating rapidly.

• It is showing signs of improvement.

• It remains unchanged.