Exam (elaborations)
BIOL325 Test 1 Questions answers latest update
- Course
- BIOL325
- Institution
- University Of Richmond
BIOL325 Test 1 Questions answers latest update
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BIOL325 Test 1what is OA - • Increasing seawater CO2 and protons
• Slightly increasing DIC and HCO3-
• Decreasing CO32- and Ω
Ocean acidification causes... - • Decreases in calcification
• Increases in growth of non-calcareousphotosynthetic species
Why does ocean acidification influence calcification? - Via:• Increasing protons
• Increasing DIC
Do refuges from ocean acidification exist? - • Most species will not have refuges
• The effects of pH variable environments aresubtle, context dependent
How does ocean acidificationinfluence photosynthetic pathways? - •Relieving DIC
limitation in non-CCM species
•Relieving DIC limitation in low-affinity CCMspecies
•Increasing energy/nutrient savings in high-affinity CCM species
What effect does elevated CO2 haveon warm TEMPORATE systems? - •
Decreasing abundance of calcareousspecies
, • Increasing abundance of speciescapable of utilising additional CO2
What effect does elevated CO2 haveon TROPICAL systems? - • Decreasing
diversity of hard corals
• Decreasing coralline algal abundance
• Inhibition of coral settlement• Increasing abundance of turfs
What effect does elevated CO2 haveon calcareous species' competitive dynamics?
- • Small changes in species physiologyresults in changes in competitivehierarchy
What effect can a marine heatwavehave on a warm temperate system? - •
Mortality of cold-affinity species
• Subsequent invasion of warm-affinityspecies
What effect can gradual warming have on a temperate system? - • Phase-shift
caused by invading warm-affinity species
• Mortality and reduced growth of cold-affinity species
Can species migrate, acclimate or adapt to global change? - • Only certain species
can adapt
• Transgenerational acclimation ispossible
• Some species can migrate to novellocations
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