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29 Cards in this Set
- Front
- Back
A(n) ____________ is any biotic or abiotic factor that restricts the existence, numbers, reproduction of organisms.
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limiting factor
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List the restrictions a limiting factor might place on an organism. (list 3)
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existence, numbers, reproduction (In other words limits who many there are by removing some or all of them or keeping them from making more of them.)
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The ability of an organism to withstand fluctuations in biotic and abiotic environmental factors is known as ___________.
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tolerance
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Ecologists refer to the orderly, natural changes and species replacement that take place in the communities of an ecosystem as ____________.
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succession
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The colonization of barren land by communities of organisms is call _____________.
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primary succession
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A stable, mature community that undergoes little or no change in species is a ______________.
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climax community
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_________________ is the sequence of changes that takes place after an existing community is severely disrupted in some way.
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secondary succession
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A(n) ________ is a large group of ecosystems that share the same type of climax community.
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biome
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A biome made up of water is called a(n) ___________ biome.
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aquatic
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List the three types of purely aquatic biomes and the four types of biomes that are semi-aquatic.
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aquatic:
marine (salt water) freshwater estuary (mixed salt and fresh) semi-aquatic: intertidal zone marshes swamps bogs |
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The portion of the marine biome that is shallow enough for sunlight to penetrate is called the __________.
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photic zone
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Deeper water that never receives sunlight mikes up the _________.
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aphotic zone
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_________ are small organisms that drift and float in the waters of the photic zone.
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plankton
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The portion of the shoreline that lies between te high and low tide lines is called the ____________.
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intertidal zone
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An aquatic biome that contains both fresh and salt water is called a(n) _________.
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estuary
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An aquatic biome that contains only salt water is called a(n) __________.
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marine biome
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An aquatic biome that is shallow and has trees is called a(n) _________.
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swamp
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A shallow aquatic biome that has grasses but no trees is called a(n) ____________.
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marsh
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An aquatic biome that is created by rainwater and has no water flowing in it is called a(n) ________.
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bog
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A biome that is made up of land is called a(n) _____________ biome.
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terrestrial
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A treeless land with long summer days and short periods of winter sunlight near the north pole is called the ________.
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tundra
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Underneath the top layer of tundra is the ____________.
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permafrost
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The ________ also is called the boreal or nerthern coniferous forest.
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taiga
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Larch, fir, hemlock, and spruce trees are common in the _______.
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taiga
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A ________ is an arid region with sparse to almost nonexistent plant life.
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desert
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__________ are large communities covered with rich soil, grasses, and similar plants
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grasslands
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__________ forests are dominated by broad-leaved hardwood trees that lose their foliage annually.
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temperate or deciduous
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__________ forests have warm temperatures, wet weather, and lush plant growth.
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tropical rain
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The three layers of the rain forest are the __________, ________, and __________.
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canopy, understory, groung
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