lecture 1: Primary production
one lab only
compulsory field course
download textbook
presentations to be prepared (pass/not pass)
the book is important for the exam
curriculum
textbook
cinetific papers
field course - presentations, methods
lectures
primary production
primary production is the basis for (almost all) life on earth
it is when carbon dioxide and water are combined with the energy of the sun (light), aka, photosynthesis, and gives more complex products like organic material and oxygen
seagrass → higher plants, very different to seaweed, have very specific requirements, has roots into the sediment
kelp → algae, is rooted to rocks by (find out what its called. its not root) or has no anchor and can be floating
mangroves → most of their biomass are above sea level, but have their roots under the water
all of these are decreasing in population, but corals are having it the worst
sediment
slide 4
no oxygen production in the dark
however, there is oxygen production when there is light
the produciton of oxygen here is much less than the kelp along the shoreline
global annual production
global carbon storage
slide 7
comparing all the aquatic ecosystems, mangroves have the highest carbon storage
sea water is not always crystal clear
benthic primary production is mainly in the coastal
maybe max 20 - 30 meters in depth
most of hte benthic primary production will be in shallow water
high primary production
intense local production, 2 or more kg C/m2/yr, compared to most terrestrial and planktonic systems with < 1 kg C/m2/yr