Introduction to Marine Biology: Climate Change Mechanisms & Impacts on Marine Systems

These flashcards cover critical concepts about climate change mechanisms and impacts on marine systems as discussed in the lecture.

What is the key factor driving climate change since the industrial revolution?

The burning of fossil fuels releasing CO2 and other greenhouse gases.

What was the global temperature increase from 2011-2020 compared to 1850-1900?

Around 1.1°C warmer.

What impact does climate change have on marine species distribution?

Species are shifting poleward to cooler waters.

What is the greenhouse effect?

A physical process where certain gases trap heat in the atmosphere.

What happens to corals under severe thermal stress?

Corals expel zooxanthellae and become bleached.

What trend has been observed in ocean salinity from 1955 to 2005?

Changes in sea surface salinity indicate the weakening of the Atlantic circulation.

How does increasing atmospheric CO2 affect ocean pH?

It leads to ocean acidification, lowering the pH.

What is the expected fate of 99% of coral reefs by 2050?

They are expected to be extinct due to climate change effects.

How does climate change affect fish populations in the sea?

Increased temperatures cause shifts in fish abundance and distribution.

What significant impact has climate change had on coral reef health?

Increased frequency and severity of coral bleaching events.