Ch 29-30 Flashcards
limnology
investigation of aquatic systems that are not oceans
Eutrophication
excessive nutrient input that can negatively impact aquatic environment
cHABS
cyanobacterial toxic blooms
estuary
a region where a river meets the sea
what is significant about microbes living in estuaries?
they are halotolerant to be able to handle both fresh and salt water
photic zone
the upper layer of a body of water where light reaches
phytoplankton
microscopic organisms that live in the photic zone and produce a lot of Earth’s oxygen
picoplankton
extremely small plankton
- phytoplankton
- bacterioplankton
DOM
dissolved organic matter
POM
particulate organic material
The most abundant organisms on earth
SAR11
- found in the ocean
Prochlorococcus
- most abundant and smallest cyanobacteria on Earth
- responsible for 5% of oxygen production
Which is more microbially diverse?
- oceans
- soil
soil
mineral soil
contains less than 20% organic carbon
(most of earths soil)
Organic soil
possesses at least 20% organic carbon
SOM
soil organic matter
decomposition is maximal at a C/N of …
30
epiphytes
microbes that live on the surface of plants
endophytes
microbes that colonize internal plant tissues
phyllosphere
all aerial (above ground) surfaces of a plant
Rhizoplane
surface of the roots
rhizosphere
region of soil around the root
Mycorrhizae
associations between fungus and plants
Saprophytic
obtains nutrients from decomposing, dead, or decaying matter
