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the relationship between biotic and abiotic factors in an area
ecosystem
ecosystem degradation
ecosystem regeneration
ecosystem
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the destruction of a natural ecosystem either by humans or by natural disasters
ecosystem
ecosystem degradation
ecosystem regeneration
ecosystem degradation
-
restoring a damaged ecosystem
ecosystem
ecosystem degradation
ecosystem regeneration
ecosystem regeneration
-
an animal that feeds on other animals
carnivores
herbivores
omnivores
carnivores
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an animal that eats plants
carnivores
herbivores
omnivores
herbivores
-
an animal that eats plants and animals
carnivores
herbivores
omnivores
omnivores
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an organism that uses the sun's energy to make its own food
autotrophs and producers
hetertroph or consumer
abiotic
autotrophs and producers
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consume others
producers
consumers
abiotic
consumers
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the non-living components of an ecosystem
producer
consumer
abiotic
abiotic
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the living components of an ecosystem
biotic
decomposers
niche
biotic
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recycle dead or decaying mater back into usable components
decomposers
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where in the ecosystem a species lives
niche
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a community of organisms where each member is eaten in turn by another member
food chain
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a complex of interrelated food chains in an ecological community, also called food cycle
food web
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any factor that prevents a population from increasing or decreasing
limiting factor
-
all the populations that live together in the same place
community
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the number of organisms of the same species living in a given area
population
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moving into an area
immigration
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moving out of an area
emigration
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direct decrease of species
death rate
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direct increase of species
birth rate
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any factor that only affects a population based on size and more intense as the population increases
density dependent factors
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the entire species has died off
extinct
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a species that has been eliminated from a particular area, but still exists somewhere else
extirpated
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any species that is likely to become endangered if factors that make it vulnerable are not reversed
threatened
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any species that is at risk because of low or declining numbers at the fringe of its range or in some restricted areas
vulnerable
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an introduced species that out-competes native species for space and resources
invasive species
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why do they say that the health of a frog species is a good indicator of the overall health of the ecosystem
- Frogs are an essential part of a food web, As amphibians, frogs spend their juvenile
- lives as aquatic species in waterways and as adults live on line around
- waterways. Because they are in two
- distinct niches, they are more susceptible to pollution, habitat loss and other
- forms of ecosystem degradation.
-
how would poor reproductive success lead a species to extinction
declining numbers until the species in no longer able to mate
-
how could change in climate lead to species to extinction
not able to adapt to changes quickly enough
-
how could hunting by humans lead to a species extinction
declining numbers until the species is no longer able to mate
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any factor that affects a population no matter what its size
density independent factors
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any factor that affects a population based on size and more intense as the population increase
density dependent factors
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what is an example of a density dependent factor
when 2 species compete for the same area
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what is an example of a density independent factor
a severe flood destroys an area
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list some abiotic factors in a pond ecosystem
8
- rocks
- water
- air
- temperature
- sunlight
- precipitation
- humidity
- pH of the water
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list some biotic factors in a forest ecosystem
pine trees, moss, insects, bacteria, fox, squirrel, bear, birds
-
how can humans lead to ecosystem degradation 4
- habitat destruction
- climate change
- releasing pollution/toxins
- overfishing
-
what are ways to be more environmentally friendly 5
- protect our land and water resources
- reduce pollution
- don't build on arable land
- eat local, avoid over-fishing and meat consumption
- stabilize human population growth
-
the ability of producers to make their own food using sunlight, and energy, and creating oxygen
photosynthesis
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the opposite reaction to photosynthesis, using oxygen created by plants and converting it into carbon dioxide and energy
cellular respiration
-
why are photosynthesis and cellular respiration considered to be in balance in the carbon cycle
they are considered to be in balance in the carbon cycle because plants produce what heterotrophs need to survive, and hetertrophs produce what plants need to survive
-
3 ways how nitrogen is fixed
- fixed by lightning
- fixed by bacteria in roots of legumes into nitrates
- fixed by bacteria that can convert animal waste containing ammonia into nitrates
-
make a diagram of a food chain and label, primary consumer, secondary consumer, producer
-
make a diagram of the carbon cycle
-
make the phosphorus cycle
- phosphate in rock
- phosphate ions in water-taken up by plants
- phosphates in animals
- decompose-bones, teeth, waste-phosphate forms rock
- phosphate runoff to oceans-in plants and animals
-
what is the role of nitrogen-fixing bacteria
healthy growth
-
the process by which bacteria who work without oxygen convert
denitrification
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increasing slowly
lag phase
-
increasing faster
exponential growth phase
-
birth rate = death rate
stationary phase
-
decrease quickly
death phase
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