1: What is primary productivity? What do we measure it in? (units)Primary production is the synthesis of organic compounds from atmospheric or aqueous carbon dioxide. We measure it in g C/m^2/ yr.
2: What are producers? Who are the main producers in the ocean? How is this measured in an
aquatic environment?
Producers are organisms that are able to create their own food, through photosynthesis. The main producers in the ocean is algae. Algea measured in an aquatic evironment is algal concentrations can be used to determine the trophic status of a lake.
3: What is a trophic level? List and define the trophic levels. (Give examples)
In which direction does the arrow go in a food web? Explain.
The trophic level of an organism is the position it occupies in a food chain. The examples of trophic levels are producers-things that do photosynthesis (grass), primary consumers-herbivores (rabbit) and secondary consumers-carnivores (lion). The flows up that is the arrow go in a food web because the next level consumer always devouter the lower level consumer.
4: What is a food web? How is it different than food chains?
A food web is A network of food chains or feeding relationships by which energy and nutrients are passed on from one species of living organisms to another. The different of food web and food chains are food chain is a relationship in the ecosystem where 1 organism eats or uses another as its source of food. On the other side food web refers to overlapping food chains.
5: Explain the limiting factors for growth in ecosystems. Explain logistic growth.
The limiting factors for growth in ecosystems are density, food, competition, and geological changes. The logistic growth are the growth of a specie until it reaches a limit.
6: What is the carrying capacity (K) of an ecosystem?
The carrying capacity of an ecosystem are the maximum limit of species that an ecosystem can support.
7: What factors affect the carrying capacity of a population? Explain how wolves and elk populations are linked and how they will reach equilibrium.
The factors affect the carrying capacity of a population are food availability, water, environmental conditions, and space. Wolves and elf populations are linked is as elk population decreases and wolf population increases. They will reach equilibrium is elk will decrease which will cause the wolf population to decrease.
8: Summarize the story of the White bark Pine and how humans can impact an entire ecosystem by choices we make (directly or indirectly).
White bark pines stabilize steep slopes, influence the amount of snow melt by sustaining snow drifts, and provide critical food, cover and shelter for many species of wildlife. White bark pine seeds are large ( about the size of a pea) and high in protein. Several wildlife species rely on the seeds as favored food, notably the Clark's nutcracker, but also the red squirrel, grizzly and black bear. White bark pines are one of the first trees to establish after a fire. As the forest regenerates, other tree species may eventually shade out this sun-living species, so natural disturbances can reset the succession clock to favor both the Clark's both the Clark's nutcracker and the white bake pine. The good thing for the squirrel store is there will be less nuts and less bears (to eat them).
2: What are producers? Who are the main producers in the ocean? How is this measured in an
aquatic environment?
Producers are organisms that are able to create their own food, through photosynthesis. The main producers in the ocean is algae. Algea measured in an aquatic evironment is algal concentrations can be used to determine the trophic status of a lake.
3: What is a trophic level? List and define the trophic levels. (Give examples)
In which direction does the arrow go in a food web? Explain.
The trophic level of an organism is the position it occupies in a food chain. The examples of trophic levels are producers-things that do photosynthesis (grass), primary consumers-herbivores (rabbit) and secondary consumers-carnivores (lion). The flows up that is the arrow go in a food web because the next level consumer always devouter the lower level consumer.
4: What is a food web? How is it different than food chains?
A food web is A network of food chains or feeding relationships by which energy and nutrients are passed on from one species of living organisms to another. The different of food web and food chains are food chain is a relationship in the ecosystem where 1 organism eats or uses another as its source of food. On the other side food web refers to overlapping food chains.
5: Explain the limiting factors for growth in ecosystems. Explain logistic growth.
The limiting factors for growth in ecosystems are density, food, competition, and geological changes. The logistic growth are the growth of a specie until it reaches a limit.
6: What is the carrying capacity (K) of an ecosystem?
The carrying capacity of an ecosystem are the maximum limit of species that an ecosystem can support.
7: What factors affect the carrying capacity of a population? Explain how wolves and elk populations are linked and how they will reach equilibrium.
The factors affect the carrying capacity of a population are food availability, water, environmental conditions, and space. Wolves and elf populations are linked is as elk population decreases and wolf population increases. They will reach equilibrium is elk will decrease which will cause the wolf population to decrease.
8: Summarize the story of the White bark Pine and how humans can impact an entire ecosystem by choices we make (directly or indirectly).
White bark pines stabilize steep slopes, influence the amount of snow melt by sustaining snow drifts, and provide critical food, cover and shelter for many species of wildlife. White bark pine seeds are large ( about the size of a pea) and high in protein. Several wildlife species rely on the seeds as favored food, notably the Clark's nutcracker, but also the red squirrel, grizzly and black bear. White bark pines are one of the first trees to establish after a fire. As the forest regenerates, other tree species may eventually shade out this sun-living species, so natural disturbances can reset the succession clock to favor both the Clark's both the Clark's nutcracker and the white bake pine. The good thing for the squirrel store is there will be less nuts and less bears (to eat them).