An important feature of northern salt marshes is ?

a. their low salt content

b. a regular pattern of drainage channels

c. a diversity of mangrove plants

d. a low primary productivity

e. an abundance of earth worms



also

in sucession of plants on a salt marsh which is most likely to be closest to the sea?

a. limonium vulgare

b. festuca rubra

c. aster tripolium

d. salicornia europea

e. phragmites australis







thankyou :)
An important feature of northern salt marshes is ?
From your list I cannot say what an important feature of northern salt marshes are, but if you mean northern hemisphere it is not mangrove, and its probably not earthworms. Salt marshes associated with estuaries are highly productive, salt content within what?, this can fluctuate daily. Regular pattern of drainage channels, again perhaps or perhaps not. If this is an assignment read the associated text.



With regard to plant succession I would say Salicornia europea if pushed, the rest occur further up a salt marsh though with the exception of festuca sp with occurs high up salt marshes and phragmites which occurs in brackish/freshwater, the rest can survive immersion in salt water for limited periods though it depends on salinity and area, so it could equally be the reed if you are basing your question on a particular stretch of an estuary.



Again if this is an assignment read the information you have first.

facial