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77 Cards in this Set

  • Front
  • Back
"Why do animals migrate?" and "How does the availability of food supply affect population size?" are both central questions to the study of...
Ecology
The scientific study of the interactions between organisms and the environment is called...
Ecology
T/F: Both living and nonliving factors influence the distribution and abundance of organisms.
True
Ecology that focuses on interactions between species is...
Community ecology
Ecology that focuses on energy flow and chemical cycling between organisms and the environment is...
Ecosystem ecology
A mosaic of connected ecosystems is a...
Landscape
Name the 6 studies of ecosystems from smallest to largest.
Organismal ecology, population, community, ecosystem, landscape, global
The time frame over which evolutionary adaptation occurs is...
Evolutionary time
The survival or reproduction of individuals which leads to evolutionary adaptation occurs in what time frame?
The ecological time frame (minute to minute organismal interactions
The study of the past and present distribution of species in the context of the evolutionary theory is...
Biogeography
What factors to ecologists consider when asking why a certain species lives where it does?
Biotic factors (all the other living species in the species' environment) and abiotic factors (the nonliving chemical and physical factors in the species' environment)
What are the possible factors that affect the distribution of the kangaroo in Australia?
The rain (abiotic), because the roos tend to live most in places with sparse rain. Or, climate, because there is a specific climate in this area that may not allow for many pathogens or parasites to kill the kangaroos.
The movement of individuals away from their area of origin or from centers of high population density is known as...
Dispersal
T/F: Dispersal greatly limits distribution possibilities
True
How can we use species transplants to study dispersal/distribution?
If an animal is transplanted in an area in which it is known not to exist and survives to reproduce, then it is known that the potential range of the species is much greater than the actual range
When would behavior limit an organism's distribution?
When the organism can access another area to live (in its potential range) but chooses not to. (habitat selection behavior)
What is a good example of habitat selection behavior?
When insects can live on many plants but only choose to live on corn or something because the odors corn produces attract them to lay eggs
How can biotic factors limit the distribution of a species?
Through predation, parasitism, or competition. If there are more animals that eat, there are more animals that get eaten and less animals that can survive transplantation.
What is a good example of a biotic factor limiting the distribution of a species?
When sea urchins were removed from an isolated marine environment, seaweed started growing in these areas at an exponential rate. Thus, sea urchins are the biotic factor limiting the distribution of seaweed
T/F: Competition between species can also count as biotic factors limiting distribution.
True
The terms spatial heterogeneity and temporal heterogeneity simply mean that...
Abiotic factors vary within spaces (place to place on earth) and time (throughout the year)
Desiccation is to...
Dry out
Most aquatic organisms are restricted to either freshwater or saltwater through their abilities to...
Osmoregulate
What is particular about the organisms that can live very deep in the ocean?
They can absorb and use blue light wavelengths
T/F: Too much or too little light can hurt an organism
True
How can rocks and soil be abiotic factors that affect the distribution of a species?
Through extreme acidic or basic conditions or through the solubility of nutrients and toxins
What are the 4 abiotic factors that affect climate?
Temperature, precipitation, sunlight and wind
What are the 2 types of climate? Describe them.
Macroclimate (that of the world, regions, and local levels) and microclimate (very fine patterns, like those found of a community underneath a log)
In what equinoxes do we have 12 hours of day and night?
September and march
What is different about the June and December equinoxes?
Norther hemisphere has shortest days and longest nights in december, and and longest days and shortest nights in June
T/F: Global air circulation creates rain in middle tropical areas, which makes dry surrounding arid regions, which then makes more precipitation in places like America, which then makes for dry, cold climates in the poles
True
T/F: After the moist air releases precipitation in the tropics, the then dry air absorbs moisture from the land and creates an arid environment
True
How can proximity to bodies of water affect climate?
Because bodies of water can warm or cool the air above it which then goes onto the bodies of land it is next to.
What is the "great ocean conveyor belt?"
The currents of warm and cold water that affect coastal climates all around the world: making England warmer than New England in the winter because of the Gulf Stream
T/F: The movement of warm and cool air from a lake or ocean onto the land surrounding it can regulate local climate, even if it is just coastal.
True
Describe how distribution can be affected by mountain slopes.
Southern-facing mountain slopes will have more sunlight and have more green plants, while northern facing ones (in the northern hemisphere) will have conifers and plants that can withstand colder climates
How does temperature change with altitude?
For every 1km increase in altitude, the temperature drops 6 degrees Celsius. So, this is similar to moving up about 900 km in latitude, and you will find similar animals and plants in both places.
What does a rain shadow do?
When moist air rises on the windward side of the mountain, it rains at the peak, and then on the other side a rain shadow is created where there is no rain and often a desert forms on this leeward side of the mountain
T/F: Seasonality can produce different temperatures and winds which can bring up ocean waters that promote growth of different forms of life.
True
What is a good example of microclimate regulation?
When trees shade their soils from excessive heat or sunlight
T/F: Rocks and dead branches can act as abiotic factors that affect the distribution of certain organisms that live under it
True
What are the two most important factors limiting the geographic ranges of plants and animals?
Temperature and moisture
What is a biome?
A major terrestrial or aquatic life zone
What characteristics determine terrestrial biomes?
Vegetation type
What characteristics determine aquatic biomes?
Physical environment
T/F: The characteristics of a freshwater biome can be determined often through the rate of the water movement and the climate in which the freshwater is found.
True
The top of an aquatic biome which is penetrated by light is called the... While the lower part which does not get much light is called the...
Photic zone, aphotic zone
The bottom layer substrate of all aquatic biomes is known as the...
Benthic zone
What are animals that live in the benthic zone called and what do they feed on?
Benthos; they feed on detritus which is dead organic matter that falls to the benthic zone/substrate after dying in the active photic zone.
The part of the benthic zone that lies between 2,000 and 6,000m below the surface of the water is known as the...
Abyssal zone
What layer in aquatic biomes of abrupt temperature change occurs to separate warm from cool waters?
The thermocline
What is a turnover in aquatic biomes and why is it important?
It is when (from a frozen stage to a very hot, stratified stage in winter and then summer) the lake cycles its water from top to bottom, so the oxygen-rich water goes to the bottom and the nutrient-rich bottom goes to the top
A lake that is nutrient poor, oxygen rich, and that has less surface area and more depth is an...
Oligotrophic lake
A lake that is nutrient rich but oxygen-depleted is a...
Eutrophic lake
What is the surface-zone of lakes called where things like lillies live?
Littoral zone
Where is the zone in lakes just below the littoral zone?
The limnetic zone which is too deep to support rooted plants (here, heterotrophic zooplankton eat phytoplankton)
A habitat that is inundated by water at least some of the time and that supports plants adapted to water-saturated soil is a...
Wetland
Basin wetlands form in _.
Small basin depressions
Riverine wetlands form mostly in...
Riverbanks
Fringe wetlands form along...
The coasts of major seas and lakes
A transition area between river and sea which hosts much life and different mixtures of fresh and salt water is an...
Estuary
An aquatic biome that is periodically submerged and exposed by the tides is an...
Intertidal zone
The aquatic biome that is a vast realm of open, clear blue water that thus has a much deeper photic zone is the...
Oceanic Pelagic Zone
What organism accounts for about half of the photosynthetic activity on Earth?
Phytoplankton
The aquatic biome formed largely from the carbonate skeletons of corals is a...
Coral reef
What forms a fringing, then a barrier, then a coral atoll?
Coral reef
T/F: Animal diversity on coral reefs rivals that of tropical rain forests
True
The coastal region of the ocean it the...
Neritic zone
What is the marine benthic zone?
The ocean floor from the coast to the bottom of the ocean, minus reefs and intertidal zones
What is an ecotone?
The integrated area between two terrestrial biomes
What is particular about tropical dry forests?
There is alot of rain but it is highly seasonal
T/F: The Savanna is actually within the equatorial region but sometimes can have a dry season of 8 or 9 months.
True
Matorral, garigue, maeuis, and fynbos are all names for the...
Chapparal terrestrial biome which is found in midlatitude all over the world
Where is temperate grassland found in America?
In the Great Plains
The largest terrestrial biome on earth that travels across the band of Canada and Russia is the...
Northern Coniferous forest
Where is the temperate broadleaf forest found?
In North and northeastern America, including KY
Where is the tundra and what restricts the growth of plants with roots?
In Alaska and the arctic, and the permafrost stops much plant growth