Assessment of Aerial Photointerpretation for Detecting Submersed Aquatic Vegetation.

Abstract

Submersed aquatic (underwater) vegetation is an important habitat component of the Upper Mississippi River System (UMRS). It provides cover, food, and spawning habitat for fish and invertebrates as well as food for waterfowl. Submersed aquatic vegetation also affects its immediate environment by acting as a nutrient source or sink, slowing velocity to allow suspended material to settle, and altering temperature, light penetration and dissolved substances in the surrounding water. In recent years, resource managers have perceived a decline in submersed aquatic vegetation in the UMRS. Long term trend data, collected over a broad spatial scale, is needed to substantiate or refute these perceptions.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1998
Accession Number
ADA356118

Entities

People

  • Heidi A. Langrehr
  • J. T. Dukerschein

Organizations

  • Wisconsin Department of Natural Resources

Tags

DTIC Thesaurus Topics

  • Aerial Photographs
  • Aerial Photography
  • Birds
  • Cameras
  • Electronic Mail
  • Environment
  • Environmental Management
  • Fish
  • Food
  • Habitats
  • Mississippi River
  • Natural Resources
  • Open Water
  • Photographs
  • Photography
  • Photointerpretation
  • Water

Fields of Study

  • Environmental science

Readers

  • Aquatic Ecology
  • Riverine Ecology
  • Systems Analysis and Design