Exam 4 Terms Flashcards
What types of sediment drains better?
well-sorted
What sediment drains water quickly?
Coarse well-sorted
What sediment drains water slowly?
fine well-sorted
What sediment blocks water flow?
poorly sorted
Which sediments are found in open, wave swept beaches?
coarse
Which sediments are found in protected bays and mudflats?
fine
coarse sediments are found in places with ___ energy, ___ surface area:volume ratio, ___ intertidal spaces
high low larger
coarse sediments have ___ oxygen content, ____ organic content, ____ microbial activity
high low low
fine sediments have ___ energy, ___ surface:volume ratio, ___ intertidal spaces
low high smaller
fin sediments have ___ oxygen content, ___ organic content, ___ microbial community
low high high
sand is ___ turbulent with ___ sediment particles, ____ detritus, and ____ feeders
more larger less suspension
mud is ____ turbulent with ___ sediment particles, ____ detritus, and ____ feeders
less smaller more deposit
rich microbial community in soft bottom habitats
mircobenthos
burrowers and tube building macrobenthos
macrofauna
small macrobenthos that live in between sand grains such as vascular plants
meiofauna
plants where roots contribute to the organic content of sediments though formation of peat
Ex.) Salt marsh grasses and sea grasses
vascular plants
feeding behavior where particles are removed from the water with an external appendage such as in polychaete worms and barnacles
suspension feeding
feeding behavior where particles are removed from the water by pulling a current into the body and passing water through a liter such as in bivalve mollusks or sponges
filter feeding
feeding behavior where organic particles from sediment are removed by passing sediment through the digestive system which can select particle sizes such as those seen in polychaete worms, echinoderms, and sea cucumbers
deposit feeding
dead particulate organic material generated by the decomposition of peat by microbial communities
detritus
tidal flows and river outflows bounded by high walls of peat that become detritus; could have sandy or muddy bottoms
channels
tropical estuaries
mangroves
temperate estuaries
salt marshes
zones that absorb water and storm energy and protect habitats behind them in estuaries
buffer zones
body fluids change with external salinity which is seen in most invertebrates
osmotic conformers
body fluids are independent of external salinity
ex.) fish exchange water and have osmotic loss through urine and gills
osmoregulators