Impact of Cooler Groundwater on Coral Reefs

USGS scientists investigate coral disease in Kauai, Hawaii, focusing on environmental factors like freshwater and nutrient input. They explore microbial balance in corals, particularly black band disease, which involves multiple microbes. The study examines groundwater influence on coral health and collects data using thermal infrared cameras. The video highlights the importance of coral reefs for tourism and coastal protection, emphasizing the need for conservation efforts.

What was the primary focus of the USGS scientists' investigation in Kauai?

• To analyze the economic benefits of coral reefs

• To explore the history of coral reefs in Hawaii

• To investigate potential environmental drivers of coral disease

• To study the impact of tourism on coral reefs

What is the role of symbiotic microbes in coral health?

• They provide structural support to corals

• They protect corals from predators

• They are a critical part of coral biology

• They help corals in photosynthesis

What is a characteristic feature of black band disease?

• It is beneficial for coral growth

• It is caused by a single type of bacteria

• It involves multiple microbes, including cyanobacteria

• It only affects deep-sea corals

What happens to coral reefs when they lose their colorful tissue?

• They become more resistant to diseases

• They are rapidly taken over by other algae

• They start to regenerate immediately

• They become more attractive to fish

How can cooler groundwater affect coastal ecosystems?

• By increasing coral immunity

• By carrying fertilizers and nutrients that disrupt balance

• By reducing the presence of algae

• By promoting coral growth

What was a challenge faced by the team in collecting temperature data?

• Lack of funding for equipment

• Rainy weather preventing helicopter flights

• Inaccessibility of the ocean surface

• Shortage of thermal infrared cameras

What is a sign that cooler groundwater may be seeping into the ocean?

• Higher ocean temperatures

• Decrease in fish population

• Increase in coral diseases

• Presence of bright green algae

Why are healthy coral reefs important for tourism?

• They offer opportunities for deep-sea diving

• They are used for coral jewelry

• They attract tourists with vibrant reefs and fish

• They provide a habitat for sharks

What is the consequence of not having healthy corals for fish species?

• Fish species become more abundant

• Fish species remain unaffected

• Fish species become more diverse

• The same fish species are not present

What is the potential impact of losing coral reefs on coastlines?

• Improved water quality

• Coastal erosion and loss of beaches

• Increased tourism

• Enhanced fish population