Wetlands: Definition and Identification lecture 11

Flashcards covering key definitions, functions, and regulations related to wetlands.

What defines a wetland according to the USEPA?

Wetlands are areas where water covers the soil, or is present at or near the surface of the soil all year or for varying periods.

What are the three key attributes to classify a wetland per USFWS?

1) Land supports predominantly hydrophytes; 2) Substrate is predominantly undrained hydric soil; 3) Substrate is non-soil, saturated with water or covered by shallow water.

What are some ecosystem services provided by wetlands?

Habitat & Biodiversity, Food, Recreation, Nutrient Regulation, Soil & Sediment Regulation, Water Supply, Cultural values, Aesthetics.

What is a hydric soil?

A soil that is adequately wet in the upper portion to develop anaerobic conditions during the growing season.

What does wetland hydrology refer to?

Physical evidence of saturation, flooding, or ponding in a wetland area.

Define 'Wetland hydroperiod'.

The seasonal pattern of the water level of a wetland, defining the rise and fall of a wetland’s surface and subsurface water.

What legislation plays a significant role in wetland preservation in the U.S.?

Section 404 of the Clean Water Act.

What is the main purpose of the Ramsar Convention?

To ensure the conservation and sustainable use of wetlands worldwide.

Name one function of wetlands related to wetland vegetation.

Provides nesting and breeding sites and habitat for a diverse range of organisms.

What are hydrophytes?

Plants that are adapted to grow in saturated or inundated soils.

How are wetland impacts managed?

Through avoidance, minimization, and restoration when possible.