Aquatic Ecosystems Final
What proportion of the water on the earth is fresh water?
3%
What is a species?
A group of individuals sharing some common characteristics or qualities/ a particular kind of creature.
What does it mean for a species to be extinct?
A type of plant or animal no longer in existence, having died out leaving no living representatives.
What is an endangered species?
A type of plant or animals whose numbers are so small that it is a risk of extinction
What is a watershed?
All of the land that drains water into a particular body of water.
What is sediment?
Any bit of rock or soil that is suspended or carried in water.
What is climate?
Average atmosphere conditions in an area over many years
Why do scientists use sampling?
Because ecosystems are may change in response to natural or human-caused events.
What habitat would you find a Bluegill?
Below a riffle in weeds near a stream bank
How doe water pollution affect aquatic life?
Cloudy water blocks light and slows down plant growth, too much fertilizer cause overgrowth of algae, toxic chemicals are poisonous to living things
How does water's temperature affect the amount of oxygen in it?
Cold water hold more oxygen
What is detritus?
Dead plants and animal matter in the process of decay
Aquatic resources conservation is
Everyone's responsibility
Water is a unique substance. It ca be found in all three states on Earth- solid , liquid, and gas. Which of the following are other properties of water?
Exhibits surface tension, acts as a solvent, and is transparent.
What is the biggest threat to aquatic communities?
Human-cause habitat destruction
Which of the following statements is true?
In the straight stretch of the river, the main force of the the current is in the middle. The deepest water is also in the middle, where there is a sharp bend in the river, the strongest current and deepest water is at the outside edge of the bend, in flowing water, there is less near the bottom
Which of the following statements about completion is true?
Individuals with in a population can complete with other individuals of the same species, individuals with in a population can complete with different species, a population within a community may compete with other populations in the community.
What kind of bait so you use for a Largemouth bass?
Live minnow
Why can most energy pyramids continue for only four or five trophic levels and support only a few top-level consumers?
Most available food and energy is lost moving up each trophic level, animals lose energy during tasks such as hunting and keeping their bodies warm, only a little of the sun's energy passes from one trophic level to the next
What habitat would you find a Largemouth bass?
Open water zone lake
Predict the oxygen level in a pond?
Oxygen levels are high each day while the sun is shining and plants are photosynthesizing, but they can drop dramatically at night
What kind of bait so you use for a Channel catfish
Plastic worm dipped in stinkbait
Predict the impact of sediment and nutrients brought by storm water runoff on the organisms in a lake or pond ecosystem.
Pond succession would speed up
Complete this analogy; Individual is to population as
Population is to community
What kinds of aquatic ecosystems do we have in Missouri?
River, lakes, and wetlands
What three factors are required for a place to be considered a wetland?
Saturated soil, wet for a major part of the growing season , plants specially adapted to live in saturated soil.
Predict the impact of flooding on the organisms in a steam ecosystem?
Some fish, plants and other aquatic life could be washed downstream, there would be no long-term damage, fresh nutrients would be brought in.
Which of the following statements about adaptations is true?
Species adaptations provide them survival advantages.
Which of the following statements about invasive species is true?
The invasive species may compete with native species for habitat or food?
What is biodiversity?
The variety and number of different organisms and populations, and the way
Where does water go when it runs off a street?
Through storms drains and ditches, then directly into streams, lakes, wetlands without being cleaned or processed.
How doe the water cycle purify water?
Water flows through underground aquifers, every time water evaporates it becomes pure again, water vapor condense to form raindrops
What is non-point poullution?
Water pollution that comes from a broad area or a number of sources.
Carrying capacity is the result of the fact that:
While living organisms have the capacity to produce populations of infinite size, environments and resources are limited.
What is conservation?
careful use