Join the CSAS Registry for External Science Experts: who can register, how to sign in with GCKey, and what volunteer peer review for DFO involves.
Applies in: CA
The Canadian Science Advisory Secretariat (CSAS) runs the peer review that turns Fisheries and Oceans Canada (DFO) science into advice the department uses in decisions. The Registry for External Science Experts is the self-serve way into that process: a database of people who say they hold knowledge in an area within DFO's mandate and are willing to take part in peer review. It is not a job board, not a credential, and not a consultation list. Joining puts your name in the pool DFO draws on when it staffs a peer-review meeting; the meeting's Steering Committee still decides who is invited, meeting by meeting.
That distinction shapes everything in this guide. The registration step itself is short — sign in, fill in a form — but the value of joining depends on understanding what happens after, what participation demands, and what it does not promise. This guide covers the Registry only. It does not describe DFO jobs, federal science funding, or any other expert roster.
The Registry exists because the range of topics is too wide for DFO's own staff alone. The About the Canadian Science Advisory Secretariat (CSAS) page states that CSAS provides a formal, transparent process for peer-reviewed science advice for decision-making at DFO, and that science advice is developed for fisheries stock assessments, fish habitat protection, aquaculture, marine protected areas, species at risk, and aquatic invasive species. A Government of Canada question period note records that DFO established the Registry to create a pathway to broaden its expert base and identify additional external experts able to contribute to peer review processes. The advice that comes out of the process is considered in decision-making along with other important considerations, and is published on the CSAS website once finalized.
The Registry's own definition is the one to work from. The Registry for External Science Experts page describes it as a database of individuals who self-identify as having knowledge in areas of expertise that are within Fisheries and Oceans Canada's mandate and are willing to participate in CSAS peer-review processes, and states that the Registry helps external experts be selected for participation in the CSAS peer-review process. The CSAS peer-review process itself involves expert review, critical evaluation, and challenge of scientific information and analyses by subject matter experts, aiming to produce science advice for decision-making that is evidence-based, objective, and impartial.
Four things the Registry is not, stated plainly so no one joins with the wrong expectation:
The process the Registry feeds is consensus-based. Participants at a meeting analyze data, consider information, and provide science advice to the requestor against previously agreed Terms of Reference, and the advice is developed by consensus, according to the participation policy. That is why the selection bar is expertise in the specific topic rather than general interest in oceans or fisheries.
Registration starts with a self-assessment, not a form. The Registry page's eligibility line is a single sentence — "interested individuals with expertise or knowledge related to the department's mandate" — and the page gives no degree requirement, no years-of-experience figure, and no list of qualifying credentials. The mechanism is self-identification: you state the knowledge you hold, in the areas you hold it, and DFO judges fit when a meeting needs that topic.
Use the topic list on the About the Canadian Science Advisory Secretariat (CSAS) page as the fit test. CSAS develops advice on fisheries stock assessments, fish habitat protection, aquaculture, marine protected areas, species at risk, and aquatic invasive species. If your expertise sits in one of those areas — for example, a stock assessment method, a habitat science question, aquaculture health, a species-at-risk population, or an invasive species pathway — it is inside the mandate. If your expertise is in marine science generally but outside DFO's responsibilities, such as offshore oil regulation or shipping safety, it is not what this Registry collects, however strong the expertise is.
The range of people who actually participate shows how broad "expertise" is meant to be. The About CSAS page lists expert participants from academic institutions, other governments, non-governmental organizations, industry, and Indigenous organizations or communities. The participation policy's definition of an expert includes both formal scientific knowledge — demonstrable comprehensive and authoritative scientific knowledge or related background and working experience in the meeting's topic — and local and/or Indigenous knowledge related and appropriate to the topic. A participant must also understand the nature of peer review, actively contribute knowledge and perspective, provide constructive, critical, scientific review, and contribute to developing consensus. The honest self-test is therefore three questions: is my knowledge in DFO's mandate, can I challenge scientific information on that topic critically, and can I work toward consensus with people who disagree with me? If the answer to any of the three is no, registration is premature.
Two scope notes. First, the Registry page sets no nationality or citizenship condition, and the participation policy states that external participants can include domestic and international science experts, as appropriate to the topic and scope of the meeting — so the Registry is not limited on its face to Canadians. Second, do not confuse the Registry with the External Expert Identification Committee. The Committee is a separate route described on the External Expert Identification Committee page: DFO established it, with input from Canada's Chief Science Advisor and the Departmental Science Advisor, to identify external experts and co-chairs for peer review processes identified in the annual science advice planning cycle. The Committee identifies people; you cannot apply to it. The Registry is the route you control.
Registration is two steps on the Registry page, and the page states them in full: sign in using your sign-in partner or GCKey, then complete the online registration form. Start at the Registry for External Science Experts page and follow its sign-in link. If you are already registered, the same page links to sign in to access the Registry.
Prepare before you click through. You need a GCKey or a sign-in partner credential — a bank or other partner sign-in accepted by the Government of Canada sign-in service. The Registry page offers no other sign-in route, and no alternative registration channel (paper form, email application) is stated on the page. If you hold neither credential, create one through the Government of Canada sign-in service first; that step is outside this guide and is the only part of the process that may take more than a few minutes.
What the form asks is not verifiable from the public web, and this guide does not guess. The form sits behind the GCKey or sign-in partner sign-in, so its fields are not visible without signing in, and no opened official page lists them. Expect it to ask for the expertise areas you are offering and contact details — that is what a selection database needs to function — but treat any third-party page that claims to reproduce the form's questions as unverified. Complete it in one pass if you can: describe your expertise in the terms DFO uses for its topics, so a Steering Committee matching a meeting topic to the database can find you. A vague entry ("fisheries") is less findable than a specific one ("Atlantic salmon stock assessment" or "aquatic invasive species pathways in the Great Lakes"), and the topic wording on the About CSAS page is the vocabulary to mirror.
No fee is mentioned anywhere on the Registry page, and no processing timeline is stated — the page does not say how long registration takes to become active, or whether you receive a confirmation. One staleness warning belongs here: the Registry page carries a date modified of 2023-06-08. The sign-in route and the page's wording have not visibly changed since, but a page that old deserves a live check on the day you register. If the sign-in link fails, do not work around it through an unofficial mirror; use the CSAS contact details on the Canadian Science Advisory Secretariat (CSAS) page, or the policy contact DFO.CSAS-SCAS.MPO@dfo-mpo.gc.ca.
Registering hands DFO your personal information, and the Registry page states the terms in its Privacy section. The information is collected under the authority of the Department of Fisheries and Oceans Act, and may be used to contact and engage interested applicants in the CSAS peer review process. You have the right to the correction of, access to, and protection of your personal information under the Privacy Act, and personal information collected through the Registry is described in the Personal Information Bank for Outreach Activities (PSU 938). In practice, that means the Registry is a contact and selection list, not a publication: your details are used to reach you about meetings, not to profile you publicly. Keep the contact details you register current, since the invitation arrives by email and a dead address means a missed meeting.
Selection is where most misunderstandings live, so the mechanics are worth stating exactly. Participation in a CSAS peer review is determined by the Steering Committee for the meeting. The Committee selects participants whose knowledge and expertise are appropriate for the topic of the meeting, and when preparing for a peer-review meeting, selected individuals are invited by email to participate. That is the whole published selection procedure: no scoring rubric, no ranking, and no published frequency is stated on the Registry page, and none is reproduced here. What the procedure implies is that the Registry is searched against a meeting's Terms of Reference. A narrow, well-described expertise area is more likely to match a specific meeting than a broad one, and a registrant whose expertise matches no meeting topic in a given year may simply not be contacted that year.
The invitation itself carries rules. Participation in CSAS peer review meetings is by non-transferable invitation only, from national or regional CSAS offices, the meeting Chair, or the Science Coordinator of the peer review meeting, according to the participation policy. You cannot hand your invitation to a colleague. If you cannot attend, the Participant's Guide to Peer Review Meetings says your reply to the invitation may include suggested alternates, who may be considered in line with their relevant experience and expertise — a suggestion, not a transfer. Invitations include the meeting's subject area, its Terms of Reference, dates, and location, and may reference pre-meeting work you are required to complete. Accepting confirms you have read the conflict-of-interest policy, agree to abide by it, and commit to remaining objective throughout the peer review process. Questions about the policy or any other aspect of the meeting should go to the CSAS office or the meeting Chair before you accept, not after.
The Participant's Guide to Peer Review Meetings, last revised in July 2026, sets out expectations before, during, and after a meeting, for in-person and virtual meetings alike. Read it in full before accepting an invitation; what follows is a summary of its load-bearing points, not a substitute.
Before the meeting, you will receive documents that must not be further distributed or shared. They are an author's confidential work and are subject to change until reviewed and fully approved by the Department and published on the CSAS website. You are expected to read the working paper or papers in advance and be prepared to speak to your comments during the meeting. You may also be asked to provide a full, critical written review of the working papers, submitted to the Chair by a specified date before the meeting, and the Steering Committee may request other tasks in advance. While every participant is by definition a reviewer, a designated official reviewer may be identified from among participants to provide detailed written comments and present them at the meeting.
During the meeting, the expectations are those of a working peer review, not a conference panel. Participants are expected to remain present for the duration and not seek replacement part way through, except in rare circumstances and only with the approval of the Chair or the CSAS office. You contribute openly and fully to the critical review of scientific information and analysis based on the meeting's Terms of Reference, and the Chair may call on anyone at any time. The code of conduct requires arriving on time, having read the pre-meeting documents and noted concerns in advance, respecting other participants' sources of knowledge, values, experience, expertise, and points of view, focusing discussions on facts and evidence, focusing on methodology and conclusions rather than the implications of the advice, sharing all relevant data and observations, freely articulating dissenting opinions even if alone in disagreement, and maintaining confidentiality of meeting products and discussions. Repeated failure to meet the code can result in the Chair asking a participant to leave all or part of the meeting, and can affect further participation in CSAS processes.
After the meeting, the obligations continue. Participants must maintain the confidentiality of the science advice and all meeting-related documents until the advice has been published on the CSAS website or the CSAS office has authorized its release, for example for a technical briefing. As required, you review the draft Science Advisory Report or Science Response within the deadline stated, respect what was agreed at the meeting — summary bullets, portions, or all of the advisory documents — and refrain from re-opening disagreements that were aired and resolved during the meeting, or from raising new areas of disagreement. The participation policy adds the same confidentiality rule and the expectation that participants remain for the full duration of the meeting. None of this is onerous for a working scientist, but it is a real commitment of preparation time, meeting time, and post-meeting review time, all on a volunteer basis — budget it before accepting, not after.
After registering, there is no published next step to take inside the Registry — no application to file per meeting, no status page described on the public pages, and no renewal or expiry rule stated. The useful waiting work is to learn how CSAS advice reads. The Canadian Science Advisory Secretariat (CSAS) page links the CSAS schedule of past and upcoming peer-review meetings and the CSAS publications search, where Science Advisory Reports, Science Response Reports, and Research Documents from completed meetings are published once finalized. Reading a Science Advisory Report in your topic area shows the form the advice takes, the Terms of Reference a meeting works against, and the level of challenge the working papers receive — which is the best preparation for being selected. The About CSAS page confirms that information on upcoming peer review meetings is available to the public on the Science Advisory Schedule.
If you want to see a meeting before committing as a participant, the observer route is the way in. Observer status may be granted at CSAS peer review meetings for educational or awareness purposes, and observers apply for that status for a specific meeting. The limits are firm: observers do not actively participate, do not require expertise on the topic, are not permitted to contribute or interact with participants, and will not receive meeting materials, with decisions made case by case for each meeting. Apply through the CSAS office organizing the meeting you want to observe, using the contact details on the CSAS index page.
A final caution about information quality. The Registry page was last modified in June 2023, while the Participant's Guide was revised in July 2026 and the participation policy was last reviewed in April 2026. The registration mechanics on the older page should be re-verified live at the time you use them, and the guide and policy are the more current statements of what participation involves. If the Registry page and the Participant's Guide ever appear to disagree — for example, on how invitations arrive or what is expected after a meeting — follow the Guide and the policy, and confirm with the CSAS office before acting.
No credential threshold is published on the Registry page. The page says who can register is 'interested individuals with expertise or knowledge related to the department's mandate,' and describes the Registry as a database of individuals who self-identify as having knowledge in areas within Fisheries and Oceans Canada's mandate and are willing to participate in peer-review processes. That self-identification is the mechanism: no degree, job title, or publication count is stated as a requirement. The [About the Canadian Science Advisory Secretariat (CSAS)](https://www.dfo-mpo.gc.ca/csas-sccs/about-sur/index-eng.html) page shows the range of people invited to peer review meetings, from academic institutions, other governments, non-governmental organizations, industry, and Indigenous organizations or communities. The [Policy on Participation in Science Peer Review Meetings](https://www.dfo-mpo.gc.ca/csas-sccs/process-processus/peer-participation-pairs-eng.html) defines an expert as someone with demonstrable comprehensive and authoritative scientific knowledge or related background and working experience in the meeting's topic, or with local and/or Indigenous knowledge related and appropriate to the topic — and who understands peer review and can contribute constructively to consensus. If your knowledge is in one of the topic areas the Secretariat covers, such as stock assessment, fish habitat, aquaculture, marine protected areas, species at risk, or aquatic invasive species, you fit the stated scope; if it is outside DFO's mandate, the Registry is not the route for it.
Start on the [Registry for External Science Experts](https://www.dfo-mpo.gc.ca/csas-sccs/registry-external-experts-repertoire-experts-externes/index-eng.html) page. The registration steps given there are two: sign in using your sign-in partner or GCKey, then complete the online registration form. If you are already registered, the same page links to sign in to access the Registry. The form itself sits behind the GCKey or sign-in partner sign-in, so its fields are not visible on the public page and this guide does not list them — do not trust any third-party page that claims to show the form's questions. Have a GCKey or a sign-in partner credential ready before you start; if you have neither, create one through the Government of Canada sign-in service first, since the Registry page offers no other sign-in route. No fee is mentioned anywhere on the Registry page. If the sign-in link fails, the Registry page is the place to re-check: it was last modified on 2023-06-08, so confirm the link is live on the day you register rather than assuming a bookmarked address still works.
No. Joining puts you in the pool that DFO draws on; it does not book a seat at any meeting. The [Registry for External Science Experts](https://www.dfo-mpo.gc.ca/csas-sccs/registry-external-experts-repertoire-experts-externes/index-eng.html) page states that participation in a CSAS peer review is determined by the Steering Committee for the meeting, which selects participants whose knowledge and expertise are appropriate for the topic of the meeting, and that selected individuals are invited by email. There is no published timetable for how often registrants are contacted, and no published way to apply for a specific meeting through the Registry — selection runs meeting by meeting, against each meeting's Terms of Reference. A second route exists in parallel: the [External Expert Identification Committee](https://www.dfo-mpo.gc.ca/csas-sccs/eeic-cdee/index-eng.html) identifies external experts and co-chairs for peer review processes that CSAS and the Departmental Science Advisor identify as part of the annual science advice planning cycle. You cannot apply to that Committee; it identifies people itself. Registering is therefore the only self-serve step, and after that the honest expectation is to wait for an email tied to a specific meeting topic.
No payment is stated. The [Registry for External Science Experts](https://www.dfo-mpo.gc.ca/csas-sccs/registry-external-experts-repertoire-experts-externes/index-eng.html) page says that once selected, individuals will be invited to participate in scientific peer-review meetings on a volunteer basis. No fee, honorarium, salary, or expense coverage is mentioned on the Registry page, and this guide states none, because none was verified on an opened official page. Treat the commitment as donated time and expertise: before accepting an invitation, check the practical costs of attending — travel, accommodation, and time away from other work — against the invitation itself, and ask the CSAS office organizing the meeting if anything about expenses is unclear. The contact given on CSAS policy pages is DFO.CSAS-SCAS.MPO@dfo-mpo.gc.ca. Do not assume reimbursement exists because other federal advisory processes pay participants; this Registry's own page says volunteer basis and nothing more.
Three phases, set out in the [Participant's Guide to Peer Review Meetings](https://www.dfo-mpo.gc.ca/csas-sccs/process-processus/meetings-reunions-eng.html). Before the meeting, you receive documents that must not be further distributed or shared, since they are an author's confidential work until reviewed and published; you are expected to read the working paper or papers in advance and be prepared to speak to your comments, and you may be asked to provide a full, critical written review to the Chair by a specified date before the meeting. A designated official reviewer may be identified from among participants to give detailed written comments and present them. During the meeting, you are expected to remain present for its full duration, contribute openly and fully as an independent expert, focus on facts, evidence, methodology, and conclusions rather than the implications of the advice, and freely articulate dissenting opinions even if alone in disagreement. After the meeting, you must maintain confidentiality of the science advice and all meeting-related documents until the advice is published on the CSAS website or the CSAS office authorizes its release, review the draft Science Advisory Report or Science Response within the deadline stated, and respect what was agreed at the meeting rather than re-opening disagreements resolved there. Accepting the invitation confirms you have read the conflict-of-interest policy and commit to remaining objective throughout the process.
There is a separate observer route, and it is not the same as registering. The [About the Canadian Science Advisory Secretariat (CSAS)](https://www.dfo-mpo.gc.ca/csas-sccs/about-sur/index-eng.html) page states that observer status may be granted at CSAS peer review meetings, and that observers are individuals who apply for observer status to attend a peer-review meeting for educational or awareness purposes. The [Policy on Participation in Science Peer Review Meetings](https://www.dfo-mpo.gc.ca/csas-sccs/process-processus/peer-participation-pairs-eng.html) adds the limits: observers do not actively participate, do not require expertise on the topic, are not permitted to contribute to the meeting or interact with participants, and will not receive meeting materials, with decisions made on a case-by-case basis for each meeting. Do not register on the Registry for External Science Experts expecting observer access — the Registry is the participant pool. To observe, apply for observer status for the specific meeting through the CSAS office organizing it; the [Canadian Science Advisory Secretariat (CSAS)](https://www.dfo-mpo.gc.ca/csas-sccs/index-eng.htm) page lists CSAS contact details for national headquarters and regional offices.
No registration fee, processing timeline, renewal or expiry rule, registration-form field list, number of registrants, or per-meeting selection frequency is stated in this guide, because none was verified on an opened official page. Figures and claims cut during drafting: the registration form's questions, which sit behind the GCKey or sign-in partner sign-in and are not publicly visible; any statement that participation is reimbursed or that expenses are covered, since the Registry page says volunteer basis and mentions no payment or expenses; any timetable for how often registrants are contacted; any count of Registry members or of CSAS meetings per year; and the CSAS schedule deep link, which failed to load when fetched for this guide — the schedule is instead reached through the CSAS landing page linked above. No conflict between opened sources required preserving both wordings: the Registry page (last modified 2023-06-08) and the Participant's Guide (revised July 2026) agree on invitations, volunteer participation, and confidentiality, and the guide notes where the older page should be re-verified live. Recheck the Registry page on the day you register, since its sign-in link and wording predate the current Participant's Guide.