Biomes
Abiotic Factor
What are the four levels of ecology?
Individual, Species, Community, Ecosystem
What is bioaccumulation?
Increasing concentration of toxic substances at increasing trophic levels
What are the different mass extinctions?
Ordovician
Devonian
Triassic
Jurassic
Cretaceous
Which biome has the highest biodiversity and why?
High early death rate that levels off, eg plants and fish. Typically have low parental care.
What percentage of Earth's water is available liquid freshwater?
0.025% (1% of 2.5%)
Rest of freshwater is ice!
Which act specifically protects endangered birds internationally?
MBTA
You're studying a biome with brackish water, fluctuating salinity, and a very high biomass. What is the expected biodiversity?
You're studying a group of animals within a large forest, and need to determine how many are present. What would be the most effective way to do so?
Mark and Recapture sampling
How have humans impacted the carbon cycle?
Burning of fossil fuels leads to release of extra stored carbon from carbon sinks. Causes climate change.
What are examples of current conservation efforts?
Treaties to protect organisms
Preserves
Habitat Restoration
Captive Breeding
Which ocean zone is characterized by an abundance of photosynthetic animals and plants, such as phytoplankton?
Photic zone (called Neritic if close to shore)
How can an organism's color be useful in escaping predation?
Can either be used to mimic other species or to warn/hide themselves
You're an ecologist studying a species of frogs by removing them from their natural environment and placing them in a small terrarium to observe their behavior. What type of modelling is this, and what are the advantages and disadvantages?
Microcosm model
Is easy to study, but may change organism dynamics
Why is it important to increase cataloguing of organisms?
Only 20% of all organisms are known, and they have to be identified in order to be preserved/avoid them going extinct