Methods for Image-based Surveys of Benthic Macroinvertebrates and Their Habitat Exemplified by the Drop Camera Survey for the Atlantic Sea Scallop

Overview

This article presents a protocol for conducting drop camera surveys to estimate the abundance and distribution of the Atlantic sea scallop (Placopecten magellanicus). The method is non-invasive and can be adapted for other benthic macroinvertebrates.

Key Study Components

Area of Science

• Marine Ecology
• Marine Biology
• Survey Methodology

Background

• Underwater imaging has become more accessible due to advancements in technology.
• Image-based surveys are less invasive compared to traditional methods.
• Protocols vary based on target species and survey goals.
• This method aids in answering ecological questions regarding species abundance and habitat associations.

Purpose of Study

• To develop a standardized protocol for drop camera surveys.
• To estimate the abundance and distribution of Atlantic sea scallops.
• To provide a framework applicable to other benthic macroinvertebrates.

Methods Used

• Setup of underwater imaging equipment on a fishing vessel.
• Use of a mobile field mapping program for data collection.
• Capturing images and recording data at various sampling stations.
• Quantifying scallop density and size using image analysis software.

Main Results

• Successful capture of images and data for scallop populations.
• Estimates of scallop biomass and distribution across different zones.
• Creation of distribution maps for various scallop sizes.
• Collaboration with the fishing industry for improved fishery management.

Conclusions

• The drop camera survey method is effective for non-invasive marine sampling.
• Results contribute to better understanding of scallop populations.
• This protocol can be adapted for other species and environments.

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