Resources Database

The DMR Bureau of Public Health Shellfish Closure Map and Data Portal has bacterial (NSSP) classifications, municipal conservation closures, biotoxin closures, and emergency closures displayed. Other layers including P90 scores can be turned on in the layer list.

The Maine Department of Marine Resources' online licensing and landings system, called LEEDS (Licensing Enforcement and Environmental Data System) is now available. In order to apply for a new license or renew a license with the system, you first need to create a login for LEEDS

Lists all forms involved with sanitation and the HACCP guidelines including vibrio control plans, wet storage, daily sanitation reports, a processing log with sales records, shipping temperature compliance, and more.

Lists all forms involved with the annual shellfish management review and forms for municipal activities such as shellfish program deadlines.

List of all forms including a field data collection sheet, MOU for non-private and private lab biotoxin testing and analysis, industry biotoxin sample protocol, guidance for high risk areas and species, and a private lab analysis table.

Evaluates all shellfish growing areas in the state of Maine to determine their suitability for harvest by conducting a "sanitary survey," which is a three-fold process.

Uses the standards outlined by the National Shellfish Sanitation Program (NSSP) to evaluate and certify all wholesale shellfish dealers in Maine to ship, or process shellfish for shipment, within and outside of the state.

A look at the individual Maine farmers who make a living in the growing industry of Aquaculture.

Provides a comprehensive resource to help managers at the local and state level sustain Maine’s valuable shellfish resources. Includes information on the history and biology of the soft-shell clam, northern quahog, American and European oysters, and blue mussels. There are sections on state resources to address water quality issues and predatory species and tools that municipalities can use to preserve or increase their intertidal shellfish resources.

Reviews the types of harmful phytoplankton that produce biotoxins such as Alexandrium, which causes paralytic shellfish poisoning; Pseudo-nitzschia, which causes amnesic shellfish poisoning; and Dinophysis, which causes diarrhetic shellfish poisoning.

There are several ways in which birds interact with shellfish aquaculture. Birds can cause significant damage to crops through predation. Some birds fall into the category of protected resources and farmers have been variously accused of interfering with foraging, (either attracting or disturbing or both) and interfering with hunting. Birds can be attracted to aquaculture structures for roosting or foraging and their guano can impact water quality and trigger the need for growers to develop management plans under the National Shellfish Sanitation Plan.

The goal of these new requirements is to control the safety of molluscan shellfish for human consumption by preventing unnecessary growth of bacterial pathogens resulting from improper or ineffective cooling or from time to temperature abuse.

DMR welcomes and encourages comment on aquaculture lease applications. This explains the process, scoping sessions, submitting a comment, speaking at a public hearing and more.

An overview of oyster production techniques including nursery and husbandry, common gear used, and oyster biology.

Guidance document for industry that identifies areas DMR has deemed a high biotoxin risk and specific management criteria for safe harvest.

This report is based on the research priorities survey conducted in June 2019 of Maine’s aquaculture community and is compared with surveys from 2012 and 2016 to look at trends. There have been some changes in the prioritization of needs since 2016, but many of the same research, development, and education (R&D&E) needs persist and remain unaddressed. As expected, there are different R&D&E priorities for different aquaculture sectors.

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