Benthic Environment Flashcards
How many percent of known ocean species live on the ocean floor?
98 percent
How many known marine species are there?
250,000
Rocky shorelines teem with organisms that live on the surface of the ocean floor. These organisms are known as?
epifauna
A typical rocky shore can be divided into two zones, which are?
Spray Zone and Intertidal Zone
What are the subzones of the intertidal zone?
High tide zone, middle tide zone, and low tide zone
Which intertidal zone is relatively dry and is only covered by the highest tide?
High tide zone
Which is alternately covered by all high tides and exposed during all low tides?
Middle tide zone
Which is usually wet but is exposed during the lowest low tides?
Low tide zone
The greatest animal diversity is at which latitude?
Lower (tropical) latitudes
The greatest diversity of algae is at which latitude?
Greater, mid-latitudes
The spray zone is also known as the what?
Supralittoral zone
What zone hosts few species of algae and many species that have shells to maintain moisture?
Supralittoral (spray) zone
Rock lice, sea roach, periwinkle snail, limpet, and rock louse are found in which zone?
Spray Zone
What is the genus of rock louse?
Ligia
What is the genus of periwinkle snail?
Littorina
What is the genus of Limpet?
Acmaea
Periwinkles can move between which two tidal zones?
spray zone and high tidal zone
Algae in the genus Fucus live in ___ latitudes and the genus Pelvita live in ____ latitudes.
Colder, warmer
Rockweed is a type of algae found mostly in which intertidal zone?
High tidal zone
____ are among the first organisms to colonize a rocky shore.
Rockweed
Mussels and buckshot barnacles are found in which tidal zone?
High tidal zone
T or F: The total biomass in the middle tidal zone is greater than in the high tidal zone.
True
Acorn barnacles, goosed necked barnacles, and mussels exist in which tidal zone?
Middle tidal zone
What are byssus threads?
A part of a mussel that helps it attach to rock
Carnivorous snails and sea stars feed upon what?
mussels
What causes coral bleaching?
Increased temperature, runoff and pollution, overexposure to sunlight, exposure to air during extremely low tides
What is coral bleaching?
Reaction to stressors where a coral expels symbiotic zooxanthellae from their tissues.
What does HAB stand for?
Harmful Algae Bloom
