Restoration of Eelgrass and Shellfish Habitats in the Great Bay Estuary

Funded by USDA/Natural Resource Conservation Service; 2005-20080 this project is part of the NRCS Wildlife Habitat Improvement Program (WHIP) and is aimed at implementing multispecies restoration of estuarine habitat consisting mainly of shellfish and eelgrass. David Burdick, Ray Grizzle, Fred Short and Gregg Moore are the principal investigators.

Reef Densities

Ship tracks showing bottom areas imaged with towed, underwater video and classified based on relative shell densities.

Shell Bottom

Classified bottom map showing distribution of oyster shell densities (no live oysters were observed); note three major areas where "shell bottom" occurs

Restoration of shellfish habitats will occur in selected medium and high density shell areas in 2006 and 2007.

Nannie Island


Nannie Islands


Adams High


Example stills extracted from video imagery illustrating each of the three relative shell density levels shown on the above maps.


Ray Grizzle


Research Professor of Zoology

Jackson Estuarine Laboratory
85 Adams Point Road
Durham, NH 03824