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64 Cards in this Set

  • Front
  • Back

Define ecology

Study of how organisms interact with one another and with their nonliving environment

What is meant by sustainable yield?

The highest rate at which a renewable resource can be used

Explain the difference between point and nonpoint pollution

Point sources are single, identifiable sources.

Nonpoint sources are dispersed and difficult to identify

What is meant by positive feedback loop?

Causes a system to change further in the same direction

How is a biome defined?

Large regions with distinct climates and certain species adapted to them.

Most defining factor is climate

What is being compared at each level in a pyramid of biomass, a pyramid of energy and a pyramid of numbers?

Pyramid of biomass shows the mass transferred, Pyramid of energy shows the energy transferred, and pyramid of numbers shows how many organisms are on each level

Source of hydrologic cycle

Powered by energy from the sun

What are the adaptations of humans that have made them so successful?

Opposable thumbs, walking upright and a complex brain

How many mass extinctions of 25-70% of species have occurred?

5

Define species richness

The abundance of individuals within each species

What are the differences between generalist and specialist species?



Generalists have broad niches and specialists have narrow niches

Identify and explain which of the following species would be considered a specialist species- Raccoon, Giant Panda, Cockroach

Giant Panda is a specialist species because it only eats bamboo and has a low birth rate

List the specific roles species can play within an ecosystem

Native, invasive, indicator, keystone or foundation

A species in an ecosystem that plays a central role in the health of that ecosystem and whose removal may cause the collapse of the ecosystem, is called what?

Keystone

Define foundation species

Creates or enhances their habitat to help other species

Give an example of interspecific competition

Humans take native species trees

A tapeworm is an example of what

Parasite

Multiple species cannot share the same ecological niche for an extended period of time due to what principle

Competitive Exclusion Principle

Give an example of coevolution

Bats and Moths

A classic example of __________ is the relationship between a clownfish and a sea anenome

Mutualism

What is the biotic potential of a population?

Capacity for population growth under ideal conditions

What are the age structure categories?

Pre-Reproductive, Reproductive and Post-Reproductive

When a population has grown to a point at which its habitat can no longer be sustained without degradation, that population likely has reached its ____________

Carrying Capacity

On a population vs time graph, a J-shaped curve represents what type of growth

Exponential

Native prairie grasses show strong ______, as they are able to survive brush fires and moderate disturbances

Resilience

Define tipping point

Any additional stress will cause the system to change in an abrupt way

Differentiate between climate and weather

Weather is short-term while climate is based off of long periods of time

What is the primary limiting factor for rain forests?

Soil Nutrients

Describe the relative biodiversity of marine species in the coastal, euphotic, bathyal and abyssal zone

Coastal-90% of all marine species, Euphotic-has many producers, Bathyal-Zooplankton and smaller fish, Abyssal-Decomposers/Filter Feeders

How are the 3 types of lakes different?

Oligotrophic have a small supply of plant nutrients, Eutrophic has a large supply of nutrients and Mesotrophic is in between these

What is background extinction?

Continuous low level of extinction

What is the difference between instrumental and intrinsic value?

Instrumental is what the species provides and intrinsic is its right to exist

What are the threats to species?

HIPPCO

What is the effect of habitat fragmentation?

Will have less species and less adaptations to survive there

Describe the overall purpose of CITES and ESA

CITES aims to reduce international trade of many threatened animals and the ESA identifies and protects endangered species

What are the two types of forest fires?

Surface and Crown. Crown is more dangerous

Define deforestation and the 3 major methods

The temporary of permanent removal of large expanses of forests. Burning, Clear Cutting, Logging.

Describe how rangelands and pastures are different from each other and savannas

Rangelands are unfenced grasslands and pastures are managed grasslands. Savannas encompass both of these

What are issues affecting national parks in the US?

They are too popular, nonnative species, native species are killed illegally and there is polluted air

Define wilderness

Area where the earth and its ecosystems have not been seriously disturbed by humans

What does HIPPCO stand for?

Habitat destruction, Invasive species, Population and resource growth, Pollution, Climate change and Overexploitation

What impact do trawlers have on ocean-floor ecosystems?

They destroy coral reef habitats and the animals that live there and disturb the ocean floor.

What is the difference between biological and commercial extinction?

Commercial extinction is when an area is no longer making a profit and biological extinction is when the animals die.

What countries still practice whaling today?

Japan, Norway, Iceland and Russia

Evolution

Evolution is the change in the genetic characteristics from one generation to the next.

Natural Selection

Natural Selection is when some individuals have enhanced traits.

Genetic Drift

Genetic Drift is the change of the frequency of a genetic trait.

Geographic Isolation

Geographic isolation is when genes are separated physically.

Importance of Mutations

Mutations are important because they bring new genetic traits which can help a individual to have better survival chances

Hydrosphere

Hydrosphere is the water.

Biosphere

Biosphere is where life exists.

Lithosphere

Lithosphere is the outer part of the earth.

Geosphere

Geosphere is the inside of the earth.

Atmosphere

Atmosphere surrounds the earth

Autotroph

Autotrophs are producers.

Herbivore

Herbivores eat plants.

Carnivore

Carnivores eat meat

Omnivore

Omnivores eat plants and meat

Detritrove

Detritivores feed on the wastes or dead bodies of organisms

Decomposer

Decomposers break down dead bodies

Habitats

The place where a population normally lives

Populations

Group of individuals of the same species living in the same place at the same time

Communities

All of the populations that live in a single place

Ecosystems

Community interacting with each other and with the abiotic factors