RI clams: some are Notata and some are not

dale

Dale Leavitt

By Dale Leavitt
Associate Professor & Aquaculture Extension Specialist
Roger Williams University

Question: What’s up with the markings on some RI clams?

The normal “white” quahog that we usually see in the bay are referred to (in science speak) as the “alba” variety. Those with a reddish-brown pattern on their shell are referred to as “notata” variety. Both are normal, native clams that can be found naturally in RI waters. The only difference is that one has a different shell color than the other. It is a simple, natural single locus variation in the genetics of the clam.

Above, a Notata clam with its distinctivereddish-brown markings. Photo by Melissa Devine

Above, a notata clam with its distinctive reddish-brown markings. Photo by Melissa Devine

Normally, the natural population of wild “notata” clams (the ones with the reddish-brown zig-zag pattern on their shell) occur at about 1-2% in the wild. When we breed clams for enhancement, we increase the percentage of those clams by simply crossing notata clams with notata clams. In the wild this does not happen often, for the density of wild notata’s is so low. When we do it in the hatchery, the number of notata clams is about 75% of the total. So when we raise and release clams for enhancement, we can track our clams by counting how many notatas there are in the catch. Anything over 2% means that we are having success with our plantings. For example, the Shellfishermen’s Association planted about 500,000 notata clams in Green’s River (Potowomut) in (about) 2004. When the area opened for fishing three years later, the catch was about 25-30% notata’s, suggesting that our enhancement program was working well.

A large number of the clams that were caught in Galilee during the July 23rd Clamming Class were notatas and they were harvested from an area where the Rhode Island Shellfishermen’s Association have been planting enhancement clams for the past three or four years. So, again, the enhancement program is working. In this case, the fishermen are planting the nursery reared clams there specifically to help out the recreational harvest for the tourists and state residents.

The catch from our July 23rd Clamming Class--A notata clam with alba clams, and a crab for good measure.

The catch from our July 23rd Clamming Class–a few notata clams can be seen alongside the predominant alba clam. Photo by Melissa Devine

RIDEM: “Rules and Regulations Governing the Rhode Island Seafood Brand and the Mislabeling of Marine Species”

Attached please find proposed “Rules and Regulations Governing the Rhode Island Seafood Brand and the Mislabeling of Marine Species” and a public hearing notice for August 27, 2013, 6 pm, at the URI Graduate School of Oceanography, Corliss Auditorium, South Ferry Road, Narragansett, RI. Kindly distribute within the Rhode Island fishing community. Written comments may be submitted concerning the regulations proposed for promulgation to the Division of Agriculture, 235 Promenade Street, Providence, RI by 12:00 pm on August 27, 2013. There will be an informal question and answer period immediately following the public hearing at Corliss Auditorium on August 27th, and you may discuss informally with DEM in advance of the public hearing by contacting Ken Ayars, Chief, Division of Agriculture (222-2781 ext. 4500, ken.ayars@dem.ri.gov), Pete Susi, Deputy Chief, Division of Agriculture (222-2781 ext. 4517, peter.susi@dem.ri.gov), or Robert Ballou, Assistant to the Director (222-4700 ext. 4420, robert.ballou@dem.ri.gov).   

A copy of the proposed regulations can be requested by mail or are available at the Division of Agriculture, RIDEM, located at 235 Promenade Street, Providence, RI 02908. Electronic copies of the proposed regulations are available on the DEM website at the following web address: http://www.dem.ri.gov/programs/bnatres/agricult/pdf/cfoodpn.pdf. The RI Seafood Brand to which the regulations pertain is attached, please be advised this brand has been trademarked by DEM.

A point of clarification regarding the proposed regulations:  the monetary penalties in Section 8.00(1) pertain only to violations of Section 7.00 regarding the mislabeling of marine species. The penalty proposed for any person improperly using the seafood logo or brand is limited to the suspension or revocation of the authorization or right to use the brand.

Ken Ayars, Chief
Division of Agriculture, RIDEM

To view or download: DEM Proposed Regulations.

RISMP Seminar Series: Clamming Classes

clamming 101

Participants dig for clams during the RISMP’s first Clamming 101 Class on Point Judith Pond. Photo by Melissa Devine.

Thanks to everyone who participated in our first Clamming 101 class on July 23rd at Point Judith Pond!

Pictures from the event are up on the Rhode Island Sea Grant Facebook Page. Check them out! For more images, visit our SMP Flickr Album, or see the Providence Journal’s photo gallery from photographer Frieda Squires.

Following the first class, our very own Azure Cygler went on the Rhode Show to talk about Clamming 101 and the Shellfish Management Plan. You can watch the interview on the WPRI website here.

Our next two events are scheduled for August 16th, and August 22nd. Unfortunately, both have filled up, but stay tuned–we’ll host one more shore-digging clamming class in September, and a tour of the Matunuck Oyster Farm is coming up soon.

For more information about events, contact the SMP Team at SMP@etal.uri.edu or call 401-874-6106.

Following up: Use Conflicts in Narragansett Bay

This article is a follow-up to the May 15th SMP Stakeholder Meeting Presentation:
Room Enough for Everyone? Understanding Human Uses & Interactions in RI Coastal Waters
Tracey Dalton (Associate Professor, URI Marine Affairs)
Robert Thompson (Associate Professor & Chair, URI Marine Affairs)
Download the presentation (pdf).
View the presentation on Slideshare.

By Tracey Dalton

Thanks for giving us an opportunity to talk about human uses and interactions at the SMP stakeholder meeting in May.  We hope that our presentation provided some insights and generated more discussion on social carrying capacity.  Like social carrying capacity, many of the key issues raised so far in the SMP process relate to people and how they think and what they do in Rhode Island’s waters.  For those of us who devote a lot of time to studying people who work, live and spend time in coastal areas, this presents a great opportunity to help address important issues right here in RI.  We appreciate this chance to follow-up on your questions.  While we’re trying to keep things brief here, we are willing to talk more about any of these issues—feel free to contact Rob or me directly (see contact information below).

First, there were some follow-up questions on our Bayscape project that mapped human uses in the upper Narragansett Bay.  Rob and I didn’t spend too much time in our talk going over the details of that project, so we wanted to fill you in on it a bit more.  We received some funding from the RI Sea Grant to map human activities in the upper Narragansett Bay (from Conimicut point into the Seekonk River) during the summers of 2006 and 2007.  For that project, Rob, myself, and several undergraduate and graduate students traveled up and down the upper Bay on twenty-five randomly selected days each summer.  With the use of some high-tech equipment, we were able to record all activities going on on-the-water (such as quahogging, shipping, sailing, and many others) and along the shoreline (such as biking or recreational fishing).  We created maps of the activities and analyzed if any particular features (such as weather conditions, availability of parking near access points, days of the week) were influencing what people were doing.  Our study showed that this type of observational approach can provide useful insights about the levels and types of activities going on in an area, but its results are pretty specific to the upper Bay during the time of our study.  That is why we are interested in extending this earlier work to other areas in Rhode Island and applying it to specific management issues, like shellfish planning and management.  Right now, we are writing proposals to conduct some follow-up studies, and we’d be interested in hearing from you about ways to make them as useful as possible.  Feel free to send us an email or give us a call.

Second, there were some questions that related to social science more generally.  It seems that many SMP participants are more familiar with–and probably more comfortable with–the tools of natural science than those of social science.  That isn’t too surprising.  Just think, when you hear “scientist”, you probably conjure up an image of someone wearing  a white lab coat and swirling a test tube or someone trekking through a salt marsh collecting specimens.  Not many of us would think of someone sitting on a dock listening to the observations, stories, and reflections of fishermen.  But what many people don’t realize is that all three of these individuals could be doing science.  Like chemists, ecologists and other natural scientists, social scientists such as anthropologists, economists, and political scientists use systematic methods to collect data and rigorous analytical techniques to make sense of it.  Our data just happen to be on people—how they think, act, and manage their behaviors—rather than on the natural environment.  Luckily for us, there are many well-established social science techniques that we can use to collect and analyze these types of data.

Finally, the question was raised about how social science can be used to inform coastal planning and management.  This is not an easy question to answer.  In fact, there are social scientists and other researchers who specialize in this very topic–trying to understand how to effectively integrate sound science (from natural & social sciences) into resource management decisions.   Most of these researchers agree that science and management should not be thought of as two separate processes, where a study is first conducted by a scientist and then the results are used by decision makers to solve a problem.  Instead, scientists and other participants in the decision making process have to work together throughout the process to shape the science and how it might be used to solve problems.  The good news is that interactions between scientists and SMP participants have been happening throughout the SMP process.  Early discussions of SMP participants identified a number of important issues, including user conflict, social carrying capacity, compliance & enforcement, and agency coordination, that could be better understood through the use of social science tools.  Ideally, social scientists and other SMP participants will continue to interact as projects are developed, data gets collected & analyzed, and findings become part of the broader discussions on RI shellfish planning and management.

Thanks again for this chance to follow-up on our talk.  If you have questions, comments or general feedback, please contact us by email or phone:

Tracey Dalton, URI Department of Marine Affairs, dalton@uri.edu or 401-874-2434
Robert Thompson, URI Department of Marine Affairs, rob@uri.edu or 401-874-4485

RSVP for Chart Chats–Informing Rhode Island Use Maps Meeting on June 13th

Chart Chats: Informing ‘User Maps’ with Your Activities on the Water

Thursday, June 13th, 2013, 5pm to 7pm
Warwick Public Library, 600 Sandy Lane. Warwick, RI 02889

Click here for Chart Chats Meeting Information in PDF format.

Please join team members of the Rhode Island Shellfish Management Plan (SMP) during the Warwick Public Library’s Second Annual Quahoggers Jamboree. The SMP team will have an informal display of user maps. These maps were created in coordination with stakeholders through a series of public meetings over the past several months with the goal of illustrating the many different uses of our bays and ponds to minimize user conflict. Here’s your chance to view these maps, suggest changes or additions, and guide the next phase of the effort.

WHEN: Thursday, June 13th, 5pm-7pm (Open house–please drop in at any time!)
WHERE: Warwick Public Library, Small Meeting Room
Please RSVP to smp@etal.uri.edu and include the meeting date.

This meeting coincides with Warwick’s Second Annual Quahoggers Jamboree. The Jamboree, which is also at the Warwick Public Library on Thursday, June 13th, 2013 will run from 6:00pm to 8:00pm. You must register online for this event at http://www.warwicklibrary.org/.

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