The Massachusetts Office of Coastal Zone Management (CZM) has published and/or funded the following materials on coastal habitat, which are categorized below and then listed alphabetically by title. (Note: Any views or opinions presented in publications prepared for CZM are solely those of the author[s] and do not necessarily represent those of the Massachusetts Office of Coastal Zone Management, the Executive Office of Energy and Environmental Affairs, or the Commonwealth of Massachusetts. Please see our website policies.) See CZM Publications for the full list of materials published by CZM.

General Habitat

Areas of Critical Environmental Concern


Salt Marsh


  • Managing Seaweed Accumulations on Recreational Beaches pdf format of Seaweed Management Guidance
file size 2MB - This guidance published by CZM in 2013 was developed to help local officials and beach managers effectively address seaweed accumulations on recreational beaches while protecting coastal resources. It focuses on how seaweed is a natural and important part of the marine ecosystem, but when accumulations occur on recreational beaches, conflicts can arise that need to be addressed.
  • Non-Native Seaweed in Massachusetts pdf format of non-native-seaweed-fact-sheet.pdf
file size 1MB - Published by CZM in 2013, this fact sheet summarizes information on invasive seaweed species in Massachusetts, their ecology, and potential impacts to the marine ecosystem and economy.
  • Essential Fish Habitat (EFH) Assessment Gloucester Harbor, Massachusetts pdf format of efh-gloucester-dmmp-01-04.pdf
file size 1MB - Prepared by the Maguire Group Inc. under contract to CZM as part of the dredged material management planning process, this 2001 publication was prepared for use in determining the potential impact of pending or future projects within Gloucester Harbor on the existing fisheries resources.
  • Gloucester Harbor Characterization Report: Environmental History, Human Influences, and Status of Marine Resources pdf format of gloucester-harbor-characterization.pdf
file size 1MB - This 2004 report describes human and natural resources, discusses the environmental history of development and human influences, characterizes current understanding of environmental quality, examines lobster fishing and lobster population structure, investigates fish community structure, and describes seafloor habitat in Gloucester Harbor.
  • Massachusetts Aquatic Invasive Species Management Plan pdf format of Massachusetts Aquatic Invasive Species Management Plan
file size 2MB - This plan, prepared by CZM in 2002 on behalf of the Massachusetts Aquatic Invasive Species Working Group, outlines a five-year strategy to manage threats from aquatic invaders.