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Tidal Flats/Marshes
Exam 3
24
Geography
Undergraduate 1
05/01/2011

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Cards

Term

Filter Feeders

Definition
aquatic animal that feeds on small organisms
Term
Fecal Pellets 
Definition
poop
Term
Flaser Beds
Definition
Sedimentary bedding created when a sediment is exposed to intermittent flow, leading to sand and mud layers.
Term
Bioturbation
Definition

Displacement and mixing of sediment particles

Term
Algal Mats
Definition
Filmentous algae on a marine water bottom.
Term
Wind-Tidal Flats
Definition

replace salt marsh on central Texas Coast and South.

Term
Flotant Marsh 
Definition
usually found in fresh water, composed of thick/floating mats of vegetation w/ open water beneath 
Term
Bluff-toe Marshes
Definition
Form along the base of coastal bluffs or muddy sediment
Term
traditional Marsh
Definition
Between land and water
Term
Cord Grass
Definition
A coarse wiry coastal grass, used to stabilize mud flats
Term

Salt Hay (Spartina Patterns) 

Definition
Salt meadow grass from newfound land
Term
Salt Panes
Definition
water-retaining depressions, retain water in summer
Term
Eelgrass
Definition
Marine plant w/ long ribbon like leaves that grow in costal waters
Term
Detritus
Definition
Waste of derris/gravel, sand, silt.
Term
Spartina Alterniflora 
Definition
Smooth cord grass/ salt marsh cord grass, found in wetlands/salt marshes/estuaries
Term
Zostera Marina 
Definition
submerged plant with very long narrow leaves in Atlantic Coasts
Term
Halophyte
Definition
A plant adapted to growing in saline conditions
Term

1. Why does sediment collect in back barrier settings?

Definition

Back-barrier is like a sponge, it slows nature of tidal waves/filtering by organisms

Term

2. What is the magnitude and cause of time-velocity asymmetry?

Definition

A. Back-barrier sponge

B. Slow nature of tidal wave

C. Inlet blocks flood tide

Term

7. Describe a salt marsh setting common in Maine, but not other locations?

Definition

Scarborough Marsh

Term

8. Why does the low marsh sediment contain a smaller proportion of plant remains (peat) than the high marsh sediment?

Definition

Low marsh is flooded twice daily by tidal action.

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