26 terms

Science Chapter 8

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Biome
contains ecosystems that have similar biotic and abiotic factors.
Desert
Typically hot and dry, cool at night, receives very little rainfall.
Tundra
Very cold, dry, and treeless. Low biodiversity of Lichens, Shallow rooted mosses, and Lemmings.
Freshwater
Ecosystems which include lakes, ponds, rivers, and streams.
Grassland
Dominant plant is grass. Few trees around water sources. Animals typically include large herbivores. Has distinct seasons.
Ocean
Saltwater ecosystem that covers most of the Earth's surface.
Permaforst
A layer of soil that remains frozen all year.
Pioneer Species
The first species that colonize new or undisturbed land.
Climax Community
A stable community that no longer goes through major ecological change.
Aquatic Abiotic factors
Temperature, Sunlight, Dissolved Oxygen
Salinity
The amount of salt dissolved in water.
Primary succession
Ecological succession in new areas of land with little or no soil.
Secondary succession
Ecological succession in areas where existing ecosystems have been disturbed or destroyed.
Aquatic Succession
A natural predictable process of freshwater ecosystems changing over time
Eutrophication
The process of a body of water becoming nutrient rich.
Sunlit Zone
The uppermost zone in the ocean. This is where photosynthesis can take place.
Twilight Zone
Middle zone in the ocean where very little sunlight reaches.
Dark Zone
Deepest zone in the ocean where no sunlight reaches. Decaying matter float down to this zone.
Continental Shelf
Relatively shallow seabed surrounding a continent.
Intertidal Zone
Ocean shore between the lowest low tide and highest high tide.
Biotic
Living or once living
Abiotic
Nonliving parts that living parts need to survive.
Ecosystem
The biotic and abiotic parts of an ecosystem.
Gills
Fish use to separate oxygen from water.
Pores
Plants have in their leaves and roots to survive under water.
Four types of Aquatic Ecosystems
Freshwater, Wetland, Estuary, Ocean
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