Bacteria that manufacture carbohydrates from inorganic carbon in the absence of solar energy are autotrophs.
Net primary production can be estimated as the amount of photosynthesis plus the amount of respiration.
The group of marine macro algae with the highest abundance and greatest geographic distribution belong to the Division Rhodophyta.
Marine algae that grow close to the limits of light penetration have accessory photosynthetic pigments that absorb high energy, short-wavelength light in the blue region of the electromagnetic spectrum.
If the total caloric content of the autotrophic organisms in a marine ecosystem were 250,000 KCAL, then the expected caloric value for the second-level consumers would be 25,000 KCAL.
Consumers, producers, and decomposers are all examples of categories of organisms within an ecosystem.
Bacteria that make their own carbohydrates by obtaining energy from chemical compounds and not directly from the sun are:
The nutrients that tend to limit photosynthesis in marine environments include:
B and C are correct.
The depth at which the cellular respiration rate equals the photosynthetic rate is referred to as the:
compensation depth for photosynthesis.
Diatoms, important producers in the epipelagic open ocean, are members of the Division:
The organism that is responsible for red tides and paralytic shellfish poisoning belongs to the Division:
The relative productivity in the world's oceans from most productive to least productive is:
polar waters, temperate waters, tropical waters
In temperate oceans during the winter months:
nutrient concentrations are high, solar input is low, and water temperatures decrease
In temperate oceans during the summer months:
nutrient concentrations are low, solar input is high, and oxygen solubility decreases.
Although primary productivity in tropical areas is generally low, which of the following tropical locations have relatively high primary productivity rates?
All of the above tropical areas have relatively high primary productivity.
An area of the open ocean where the rate of primary productivity is very low is referred to as a(n):
If 10,000 KCAL of energy were contained in the primary producers, on average how many KCAL of energy would you expect to be transferred to third-order consumers
Which of the following pairs is an incorrect match between organisms and the type of symbiotic relationship they manifest?
A symbiotic relationship in which one organism benefits and the other is unaffected is:
The relationship between cyanobacteria and fungi that results in a lichen is an example of:
The maximum sustainable yield (MSY) is best defined as:
largest catch that can be taken without overfishing.
The area of the ocean that produces the largest standing stock of commercial fish is in the:
All the following are effective means of regulating fisheries except:
Limiting the size of the boat.