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53 Cards in this Set
- Front
- Back
epipelagic
|
-upper realm
-warmest & best lit |
|
Plankton
|
-wanderer
-virusues |
|
zooplankton
|
-wanderer's
-dinoflagellates |
|
copepod
|
-small crustaceans
|
|
holoplankton
|
planktonic for entire life
|
|
meroplankton
|
-planktonic for only part of life (larvae)
ex: fish corals mollusks |
|
Nekton
|
larger & can swim
|
|
Anchoveta
|
-small pelagic fish
-eat phytoplankton -form enormous schools -specialized gill razors |
|
picophytoplankton
|
fraction of plankton composed by cells
primary producers in gyers |
|
nanophytoplankton
|
free floating aquatic plant
|
|
upwelling
|
-produces high nutrients
-high phytoplankton productivity |
|
zooplankton & anchoveta ____ up the food chain
|
transfer energy
|
|
microbial loop
|
-other part of food chain
-changes organic matter, into bacteria & protozoa |
|
Ocean Gryes
|
-low nutrients
-lots of light -stable temps -5 mains ones |
|
Phytoplankton production
|
-driven by nutrient
-high nutrients -lots of zooplankton -good for tuna, mackerel, birds, marine animals |
|
Senses in Fish-5
|
vision
sound & vibration equilibrium & balance electrical feilds olfaction |
|
Lateral Line
|
used to detect movement and vibrations
|
|
Otolith
|
-calcareous structures located in inner ear
-sit in fluid filled sacs w/ sensory hairs -age growth (tree trunk) -tool for fish ecology and management |
|
Ampullae of Lorenzini
|
mostly located in cartilaginous fish
help sense electric fields in the water |
|
olfaction
|
sense of smell
|
|
schooling- 6
|
-schools from for all types of fish
-mating -motion as a group -sight, pressure, olfaction -protection from predators -increase predation success |
|
where do nutrients come from
|
-runoff
-deposition -microbial loop |
|
concentration of nutrients
|
-low at surface
-higher deep |
|
spring bloom temp. in ocean
|
-winter = low light & deep mixing
-little phytoplankton growth - cold water and high winds |
|
polar oceans bloom once
|
light level limited until summer
|
|
nitrogen is limiting nutrient in much of ocean
|
supply of nitrogen controls primary production.
|
|
solution to anthropogenic
carbon emissions |
add Iron (fe) to stimulate phytoplankton growth.
|
|
problems with fe fertilization
|
-modified food webs
-harmful algae blooms -deep sea oxygen depletion |
|
mesopelagic
|
twilight zone
|
|
Bathypelagic
|
continental slope & rise
|
|
abyssopelagic
|
abyssal plain
|
|
hadopelagic
|
trenches
|
|
planktonic grazers
|
-jelly fish
-salps -siphonophores -invertebrates (more abundant in mesopelagic) |
|
Hatchetfish
|
-reflective sides to break outline from the side
-bioluminescent photophores |
|
mesopelagic eyes
|
upward eyes to look for prey above
|
|
tubular eyes
|
acute upwards
enhance peripheral vision |
|
why do organisms migrate vertically?
|
-feed and spawn at surface
|
|
distinct physiologies
|
swimming ability (muscles bones swim bladder)
-swim bladder (gas filled organ) |
|
why do they have big mouths
|
prey is scarce
|
|
Why would organisms
produce light below the twilight zone (i.e. the bathypelagic)? (4) |
attract prey
attract mates confuse predators communicate |
|
Deep Ocean Floor
-Fine mud |
-worms, crustaceans, protozoa, feeding on bacteria, detritus.
-suspension feeders are rare -low abundance of food particles |
|
larger animals have to travel ____distance to find food
|
larger
|
|
carcasses falling to the bottom
|
whales & large fish
-attracts and supports entire community - organisms like (bacteria, polychaete worms) specialize in colonization falls |
|
different sizes across ecosystem
surface: mesoplegic: deep pelagic: deep sea: |
-different styles
-tough predation environment -ambush predators, longer lives, -very long lives, selection for larger bodes |
|
shape and swimming performance:
speed: strong muscles: |
-streamlining
-elongation -hunters, migrators |
|
eyes driven by need
|
-to hunt fish
-avoid predators |
|
important in deep pelagic:
|
-olfaction
-vibration & sounds |
|
deep sea vents
|
-shoots out of rocks
-carries dissolved compounds -bacteria in sediments |
|
Chemosynthesis
|
-energy from inorganic chemicals to make organic matter
-metals, methane, sulfides |
|
Tubeworms are packed with___
|
chemosynthetic bacteria
-sulfide, nutrients, CO2 to bacteria |
|
Tubeworms symbiotic relationship
|
-live in alien environment
-high temps -toxic sulfides and metals |
|
chemosynthetic bacteria supports____
|
entire ecosystem,
tubeworms, crabs, fish |
|
relationships between
chemosynthetic bacteria |
tubeworms, bivalves, snails, protozoa.
-wide range of environments |