Temp
Average temp of ocean
17 c
How is O2 absorbed into water?
O2 is dissolved in water either when absorbed from the atm or when produced as a by-product of photosynthesis
Average salinity of sea water
35 ppt
What is turbidity?
A measure of clarity of water
Why is the ocean more acidic?
CO2 is absorbed into water from the atm which lowers pH
Does water temp increase of decrease with depth
decrease
Main cause of eutrophication?
Nutrients from land, like fertilizer being washed off during rainstorms
Name 3 things that could change the salinity
weather, glacial melting, estuaries, evaporation
Name three things that contribute to high turbidity
water flow, weather, pollution, land use, erosion, sediment runoff
What is the average pH of the ocean?
8.1
Why is it important to test temp for water quality?
Temp affects metabolic rate and photosynthesis, can change DO2, and change density of water
At what low level of DO2 do most fish die?
2mg/L
What is optimum salinity range for eel grass?
20-31 ppt
Name three consequences of high turbidity.
algal blooms, loss of O2, fish have difficult time finding prey, inhibits photosynthesis
Why is a more acidic ocean a concern to scientists?
It is harming animals that need to build calcium carbonate shells and skeletons
Cold
What is the minimum dissolved oxygen requirement for blue crab in Chesapeake Bay?
3mg/L
What does salinity impact?
ocean currents, weather, density of ocean
What is the units for turbidity? Bonus points if you know what is stands for.
NTU ( Nephelometric Turbidity Units )
What is pH measuring?
Hydrogen ions in solution
Ideal temp for thermophilic bacteria
50-90 c
What part of the United States has most eutrophication?
Louisiana, Mississippi
In the stomach of a marine fish what kind of absoprtion happens?
passive reabsorption of salt and water
What is the range of turbidity?
10-250 NTU
What is the range of pH where fish would die?
0-3 and 10-14