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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