Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
17 Cards in this Set
- Front
- Back
|
Biom
|
A Major terrestrial or aquatic life zone, characterized by vegetation in terrestrial biomes
and physical environment in aquatic biomes. |
|
|
Fresh Water Biom
|
salt less than 1%
Lakes, ponds, river, streams, wetlands |
|
|
Marine Biomes
|
Salt greater than 3%
Oceans, intertidal zones, coral reef, estuaries |
|
|
Benthic Realm
|
bottom of all aquatic biomes. Made up of sand and organic and inorganic sediments.
Occupied by Benthos (squishy) |
|
|
Wetland
|
transitional biome between an aquatic ecosystem and terrestrial one.
|
|
|
Photic Zone
|
depth of the water in a lake or ocean that is exposed to sufficient sunlight for photosynthesis to occur.
|
|
|
Aphotic Zone
|
the portion of a lake or ocean where there is little or no sunlight. It is formally defined as the depths beyond which less than 1% of sunlight penetrates.
|
|
|
Threats Lakes/Ponds
|
Large inputs of fertilizers and sewage Increase algae growth which causes decreased light penetration and oxygen.
|
|
|
Rivers and Streams
|
Upstream: clear, cold, swift, little nutrients. Supported by algae on rocks.
Downstream: Murky, warmer, slower, and higher in nutrients due to Phytoplankton. |
|
|
Threats to Rivers
|
Pollution
Dams- alter rate + volume of water Plant communities Plant and animal populations Salmon spawning |
|
|
Lakes, Ponds
|
Communities of plants, algae,, and animals distributed by depth of water and distance from shore. Mineral nutrients nitrogen and phosphorus regulate amount of phytoplankton.
|
|
|
Phytoplankton
|
Photosynthetic algae and bacteria that provide energy for community
|
|
|
ZooPlankton
|
Free-floating animals, including many microscopic ones. Provide energy for community
|
|
|
pelagic realm
|
open water of the oceans
|
|
|
Coral Reefs
|
Biome that occurs in the photic zone of warm tropical waters in scattered locations around the globe
|
|
|
Intertidal zone
|
Where the ocean meets land, the shore is pounded by waves during high tide and exposed to the sun and drying winds during low tide.
|
|
|
Estuaries
|
Transition area between a river and the ocean. Among most productive ares on Earth; biodiversity
|
