Rivers and Streams

What is a perennial stream

• A stream that flows year round

• A stream that become dry for a week or longer each year

• A stream that flows only following rainfall

• A stream that gains water from springs

What is an ephemeral stream?

• A stream that flows year round

• A stream that is dry for a week or more every year

• A stream that flows only following rainfall

• A stream that gains water from springs

What is an intermittent stream?

• A stream that flows all year long

• A stream that is dry for a week or more each year

• A stream that flows only following rainfall

• A stream that gains water from a spring

What kinds of organisms would be predicted to live in a fourth (higher) order stream?

• Little aquatic plants, few small animals would depend on shed vegetation to fall into the stream

• Black willow, smartweed,cottonwood, and sycamore along with more collectors than shredders. Rooted plants would have difficulty living because of how deep and cloudy the water is

• Both rooted and floating aquatic plants and many types of animals have a niche in which to live. E.g. algae, water willow, sycamore, snail ,crayfish, scud, channel catfish, bluegill, largemouth bass and gar

• Nothing could live in a fourth order stream

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Which is NOT an example of a freshwater aquatic life zone?

• Lake

• River

• Wetlands

• Ocean

What is a riparian zone?

• The vegetated buffer between streams and the land next to them

• The part of the river where water flows under normal conditions

• The section of the river where water is shallow and fast moving

• The part of the river where terrestrial organisms can call home due to high dissolved oxygen

What is a stream channel

• The vegetated buffer between streams and the land next to them

• The part of the river where water flows under normal conditions

• The section of a stream where water is shallow and fast moving

• The zone of a river that terrestrial organisms can call home because of high dissolved oxygen

Lotic systems are systems that

• contain little water

• contain more water

• contain standing water

• contain flowing water

Lentic systems are systems that

• contain little water

• contain more water

• contain standing water

• contain flowing water

What adaptations do animals living at the bottom of a river have?

• Large pectoral fins, Flat heads,

• Smaller bodies, mottled coloration

• Small mouths, Rounded tails

• Large tails, Skinny bodies

Tags

NGSS.MS-LS4-4