Biomes
What biome has both low productivity of plant species due to low precipitation and permanently frozen subsoil known as permafrost.
Tundra
Which nutrient (C,N,P or H2O) is not found in a gaseous state?
Phosphorus
What is the Net Primary Productivity equation?
NPP = GPP - RL
What type of organism is responsible for breaking down dead and/dying organisms to return the nutrients into the soil?
Decomposers
What process is completed where glucose is synthesized by plants?
Photosynthesis
Terrestrial- Tropical Rainforest
Aquatic- Coral Reefs
What is the energy source for the hydrological cycle?
The sun
What is the unit primary productivity is measured in?
kcal/m2/yr.
The ultimate source of energy for all terrestrial ecosystems is
The sun
If two species habitat the same area and survive off the same resources, this is known as
competition
The greatest/largest amount of fresh water is found where?
Polar ice caps, glaciers and groundwater/aquifers
Which two nutrients are the most limiting for plants? (hint- what nutrients are most commonly found in synthetic fertilizers)
Nitrogen and Phosphorus
We would expect the NPP of the open ocean to be...
Low
What is the 10% rule?
only about 10% of the energy from one level makes it to the next level; the other 90% is used by the organism & lost as heat
Why are phytoplankton generally only found in the upper parts of most bodies of water?
Sunlight cannot/does not penetrate great depths into the water (known as aphotic zone)
What two characteristics are used to determine variation and/or differences in terrestrial biomes? (hint- think of what characteristics would impact a biomes primary productivity)
Temperature and Precipitation
What is the largest reservoir(s) for each nutrient?
Carbon, Nitrogen, Phosphorus and Water
Carbon- Atmosphere (THEN direct exchange w ocean)
Nitrogen- atmosphere (78%)
Phosphorus- rock and sediment
Water- ocean
What is respiration loss?
Energy used by the plant/producer through cellular respiration
If a tertiary consumer has 456 kcals of energy, how much energy would the primary consumer have?
45,600 kcals
What process is caused by excess Nitrogen and Phosphorus into bodies of water that produce large algal blooms is known as
What 4 characteristics are used to classify aquatic biomes?
Temperature, salinity, depth, flow/DO
What is the name of the process completed by bacteria that converts atmospheric nitrogen into biologically usable nitrogen in soil
Nitrogen Fixation
What is Primary productivity
rate that solar energy is converted into organic compounds(glucose) via photosynthesis over a unit of time
If the GPP is 7,400 kcal/m2/yr and the NPP is 6,500 kcal/m2/yr, how much energy would a secondary consumer except to have?
74 kcal/m2/yr
What is a trophic casade?
removal or addition of a top predator has a ripple effect down through lower troph. Levels