Terms
The science that studies the interactions between organisms and their environment.
What is Ecology?
This level of ecology studies how changes in one area of the globe affect other regions of the world.
What is global ecology?
Define an abiotic factor.
A non-living factor affecting species abundance and dispersal (Temperature, Sunlight, Wind, Soil Type, etc)
Rainfall affects dispersal of a population by changing a bend in a river between the population.
Abiotic
Who wrote Silent Spring, a book that led to the ban of DDT in the US?
Rachel Carson
This consists of all the organisms in a particular region, along with nonliving components.
What is an ecosystem?
The goal of this level of ecology is to understand factors affecting population growth, density, and size. It also involves studies of species interactions such as predation and mutualism.
What is population ecology?
Which determines broad species distributions: climate or weather?
CLIMATE
Weather, because it is short term, is more likely to impact an individual organism rather than the entire population.
An ascaris nematode feeds on nutrients in the intestines of a pig.
Biotic (Predation)
What other fields can ecology be linked to?
Genetics, physiology, behavior, paleontology, evolutionary biology
A major groupings of plant and animal communities defined by a dominant vegetation type is known as a what?
Biome
What are the two subdivisions of organismal ecology?
*Physiological ecology-how organisms are physiologically adapted to their environment
*Behavioral ecology-how the behavior of an individual organism contributes to survival and reproductive success.
Solar radiation (increases/decreases) with increasing latitude?
(See picture on Lecture 24 slide 8)
Because of the tilt of the Earth, the most direct sunlight will hit at the equator. The farther away a spot on the Earth is from the equator, the less solar radiation it will receive.
A tiger affects the dispersal of gazelle by consuming newborn young.
Biotic (Predation)
Living factors that affect species abundance and dispersal is known as a...?
Biotic Factor
An EXAMPLE of a limiting factor that depends on the number of individuals in the population.
What is Competition, Predation, Biotic, parasites, disease
The goal of this level of ecology is to study how nutrients and energy moves between organisms and the surrounding atmosphere, soil, or water.
What is ecosystem ecology?
How do Earth's orbit and tilt create seasons?
Because of the change in solar radiation with each latitude due to tilt of the Earth, as the Earth rotates around the sun, different areas of the world are hit with varying levels of solar radiation throughout the year, thus creating "seasons." (See Lecture 24 slide 9)
An ox-bird eats the parasites of the skin of a cow.
Biotic (Mutualism)
How is ecology different from advocacy?
Environmentalism is advocacy focused on conservation and preservation of life on Earth whereas ecology provides scientific understanding of living things and their environments.
What is the number of organisms a defined area can sustain before running out of resources?
What is Carrying capacity?
List the six levels of ecology from smallest to largest.
Organismal, population, community, ecosystem, landscape, and global
Give five examples of an abiotic factor.
1) Soil Type
2) Temperature
3) Climate
4)Water
5)Wind
Worms are unable to living in a certain environment because of the soil type.
Abiotic
What is an introduced species?
Species brought into regions by human actions either intentionally or unintentionally.