Ecology Terminology
All of the biotic and abiotic factors acting on an organism
the environment
The biological conversion of organic molecules (CH2O) using CO2
Primary production
This horizontally divided part of the ocean lies directly over the continental shelf
Neritic Province
This type of continental margin is found along the coast of Florida
passive
The average salinity of seawater
35‰
2 or more populations interacting in the same habitat at the same time
Community
Any organism that eats only primary producers
heterotroph/grazer/1° consumer/herbivore
The Pelagic part of the ocean at the sea surface (30-200m)
Epipelagic zone
Old oceanic crust is destroyed here
subduction zones/trenches/convergent plate boundaries
This is an area of rapid change in seawater density with a change in depth
pycnocline
The ecological efficiency of energy transfer moving up one trophic level is about ____%
10%
The term that describes the 106:16:1 ratio of C:N:P in phytoplankton
Redfield Ratio
The Benthic portion of the seafloor in between the low tide mark and the continental shelf break
Shelf zone/sublittoral zone
Formation of coastal mountain ranges and volcanic island chains are typically found along this type of continental margin
active
Higher than average sea surface salinity is typically found at this latitude
~30° N/S
The number of offspring produced at each reproductive event
clutch size
The biological conversion of inorganic, atmospheric nitrogen (N2) in to organic nitrogen (NH4+/NO3-/NO2-)
Nitrogen fixation
This benthic zone includes the Mariana trench
Hadal zone
These small hills (<300m) rise from the floor of the abyssal plain
Abyssal hills
This type of ocean sediment is commonly found from precipitation of minerals at hydrothermal vents
hydrogenous
The balancing of an organism's ideal internal conditions despite changes to its external environment
Homeostasis
A name for a biogenous sediment that is >30% calcite (CaCO3) or silica (SiO2)
ooze
The compensation point (where net photosynthesis = net respiration) is the lower boundary of this zone
Euphotic zone
Ocean crust will typically be thinner the farther away it is from this ocean feature
divergence zone/mid-ocean ridge
Dissolved salts in seawater ultimately comes from a chemical reaction between these three things
water, CO2 and rocks on land