Unit 1 Ecosystems
This biome has the highest net primary productivity, in part because of consistently warm temperatures and abundant sunlight.
Tropical Rainforest
Why would a wildfire affect biodiversity in an ecosystem?
The more biodiverse an ecosystem, the more capability it has to recover from the wildfire.
What are the 3 types of survivorship curves? What do each describe?
Type I, II, III - Type I - Few offspring, mortality later in life, Type II - constant mortality rate, Type III - Large number of offspring, high mortality rate
How does the burning of fossil fuels contribute to the net increase in atmospheric carbon? (Think about WHERE the fossil fuels were geographically located)
Carbon that has been sequestered underground is added to the carbon cycling between the atmosphere and the biosphere.
Photosynthesis is the major source of which of the following gases in Earth's atmosphere?
O2
Which of the following organism relationships is represented by starlings displacing bluebirds from nesting sites?
Competition
What is an example of a the disruption of an ecosystem service by an anthropogenic activity?
Burning fossil fuels
Oysters produce millions of eggs each mating season. What type of organism are they? r-selected or K-selected?
r-selected
What is a watershed?
surface area from which runoff resulting from rainfall is collected and drained through a common point
Primary producers in a lake ecosystem store approximately 25,000 kcal/m2/yr of energy in their biomass. What is the most likely amount of energy available to a tertiary consumer in this ecosystem?
250 kcal/m2/yr
What is measured on the pH scale?
pH
What is island biogeography?
theory developed that helps explain factors that affect species richness and the diversification of isolated communities
Salamanders, ospreys, snapping turtles, and beavers all live in aquatic habitats. Salamanders lay their eggs in small freshwater pools and feed on insects. Osprey habitats include rivers, bays, and swamps and the birds feed on fish and other animals in the water or on land. Snapping turtles live in fresh or brackish water and feed on plants, fish, frogs, and snakes. Beavers build lodges on islands, pond banks, and lake shores and eat a variety of shrubs, grasses, and crops.
Based on the information provided above, which of the following species would best be classified as a specialist?
Salamanders
Ospreys
Snapping turtles
Beavers
Salamanders
What type of biome would be found between the equator and 30 degrees N latitude or the equator and 30 degrees N latitude? (Think about Hadley Cells)
Tropical Rainforests
Five different species of warblers, seed-eating birds, live in the same species of conifer trees. All of the birds migrate to coniferous forests during the summer, and different species reside in different areas in the same tree. They feed on the seeds of the conifer trees, but the different species do not mate with each other.
Why can different warbler species all have habitats in the same conifer trees?
Resource Partioning
This biome is best characterized as an area that forms the narrow band along the coast that experiences a range of environmental conditions (including daily changes in sunlight, temperature, and water)?
Intertidal zones
What is an example of a natural disruption to an ecosystem?
Earthquake, Tsunami, Tornado
Explain carrying capacity.
The number of organisms that can live in an ecosystem.
Explain how a transform plate boundary moves
tectonic plates sliding past one another
Why would genetic biodiversity help a species adapt to environmental stressors?
Gives more genes available to create adaptations.
When ammonia is converted to nitrite, then to nitrate what part of the nitrogen cycle does this represent?
Nitrification
What are the different types of ecosystem services?
Regulating, Provisioning, Cultural, Supporting
What is one explanation for a declining human birth rate?
Women having access to more educational and economic opportunities.
Explain a subduction zone.
An oceanic tectonic plate slides under the less dense continental plate.
What is the rule of 10?
At each successive trophic level only 10% of remaining energy is available to the next level.