Impacts of Climate Change on Marine Organisms and Ecosystems Flashcards
What is the IPCC’s critical threshold?
<2 deg C
Variability in Earth’s orbit
- Precession
- Eccentricity
- Obliquity
Where does the data for marine life records climate change come from?
The hard remains of their shells
What is committed temperature rise?
Even if we stopped emitting today it would continue to warm
What is a visible sign of the ocean under stress?
Marine heatwaves
What causes thermal displacement?
Marine heatwaves
Effects of aquaculture
Problem - fishery collapses
Solution - can absorb CO2, could reduce acidification
Hypoxia
Warmer ocean water causes the water to hold less oxygen
HABS (harmful algal blooms)
- Can be toxic or non toxic
- Can be red or have no colour at all
- Can occur naturally or can be caused by overfeeding and climate change
Loss of artic sea ice
CO2 more soluble in cold water
If we continue to lose this level of sea ice by 2050 there will be no sea ice