Question

hydroperiod determines which of the following?
health of wetland area
speed and direction of water flow
salinity and nutrients
depth, duration and frequency of flooding

Explanation:

Hydroperiod is defined as the pattern of flooding in a wetland, specifically encompassing the depth, how long (duration), and how often (frequency) an area is flooded. The other options are either influenced by hydroperiod but not determined by it, or relate to other water characteristics.

Answer:

Health of wetland area