Climate Change Impacts on Aquatic Ecosystems

Name?

What is the primary cause of disruption in marine food webs due to climate change?

• Decreased mixing of deep and surface waters
• Increase in ocean temperatures
• Changes in geographic distribution of aquatic species
• Changes in population density of species and composition of ecosystems

What happens to the species higher up in the food chain if phytoplankton levels decrease?

• They migrate to cooler waters
• They decrease in population
• They become extinct
• They increase in population

What is the expected impact of climate change on biodiversity in the equatorial regions?

• Increase in biodiversity
• Uncertain
• Decrease in biodiversity
• No change in biodiversity

What is the primary reason for coral bleaching?

• Lack of sunlight
• Pollution
• Algae
• Warming oceans

What is the potential consequence of coral reefs declining by 90%?

• No change in aquatic species
• Uncertain
• Increase in aquatic species
• Decrease in aquatic species

What is the main cause of ocean acidification?

• Excessive carbon dioxide emissions
• Decreased carbon dioxide absorption
• Increase in ocean temperatures
• Presence of phytoplankton

What is the effect of ocean acidification on coral reefs?

• Corals erode faster than new ones form
• Corals become more colorful
• Corals become more resistant to bleaching
• Corals grow at a faster rate

What is the primary impact of ocean acidification on aquatic organisms?

• Improved adaptation
• No impact
• Increased population density
• Decreased food sources

What is the consequence of species being unable to adapt to higher sea temperatures?

• Local extinction
• Increased migration
• Decreased sea temperatures
• Global extinction