Hi Steve,
Could there be other variables that explain the BAY side encroachment of surf clams?
In the mid-1960s, I was digging (by hand) soft-shell clams out of the sand in intertidal areas near Sag Harbor. Aren’t the soft-shells more scarce in more recent decades? And surf clams then have better opportunity to adapt to the non-surf environment?
David Kirsh, LPC, RN
Sent from my iPhone
> On Jul 19, 2019, at 10:03 AM, steve rosenthal <[log in to unmask]> wrote:
>
> Correction (Sorry!)= first post should say "encroaching into the
> shallow sand/mud flats on the BAY side of the local beaches (barrier
> islands)....."
>
> Steve
>
>> On 7/19/19, steve rosenthal <[log in to unmask]> wrote:
>> I didn't follow the links to the articles yet, but I can mention one
>> anecdotal observation about surf clam habitats. For years the
>> 'normal' domain of surf clams here in New York was in shallow water
>> from just off the south shore barrier beaches (as a child i remember
>> feeling them with my toes and digging them up) to vast beds slightly
>> further offshore in a few feet of water to about 100-200 feet. Over
>> the years i have also seen them steadily and stably 'encroaching' into
>> the shallow sand/mud flats on the barrier side of the local beaches,
>> where their numbers have remained relatively low but stable. LIve and
>> dead shells of all sizes (adult and juvenile) were present. These
>> waters are subject to much greater temperature and salinity changes
>> than those on the other side. Curious to see what the articles
>> say......but anecdotally it seems this species was already well
>> adapted to expand into other habitat types than the offshore clam
>> beds it reaches peak abundance in.
>>
>>> On 7/19/19, John Varner <[log in to unmask]> wrote:
>>> hot weather has everyone a bit cranky?
>>>
>>> The article was not intended as a definitive piece on surf clams. It
>>> references two articles (see links to originals, in the article) that
>>> deal
>>> with adaptations (or inability of species to adapt to ) climate change,
>>> one
>>> of which is a detailed study of surf clams. The stand out info is that
>>> ocean biomass will decrease by nearly 20% by 2100 due to climate change.
>>>
>>> Sorry the article did not reference Susan Hewitt as the original
>>> photographer, but the responsibility is with Wiki, not the article's
>>> author
>>> or Mongabay. If you follow the link to the image, Wiki does not credit
>>> the
>>> original photographer either, and grants license to use to the photo, so
>>> long as it is attributed to Wiki.
>>> ________________________________
>>> From: Conchologists List <[log in to unmask]> on behalf of
>>> Frederick
>>> W. Schueler <[log in to unmask]>
>>> Sent: Friday, July 19, 2019 8:12 AM
>>> To: [log in to unmask] <[log in to unmask]>
>>> Subject: Re: [CONCH-L] surf clams adapt to climate change
>>>
>>>> On 19-Jul.-19 8:00 a.m., Susan Hewitt or Ed Subitzky wrote:
>>>> The surf clam shell photo is an image that I made in January 2009 using
>>>> my flat-bed scanner and then donated to Wikimedia:
>>>>
>>>> https://commons.wikimedia.org/wiki/File:Spisula_solidissima_shell.jpg
>>>>
>>>> Although the MongoBay piece credits Wikimedia, they should also have
>>>> credited me as the photographer
>>>
>>>> https://news.mongabay.com/2019/07/study-examines-how-the-atlantic-surfclam-is-successfully-adapting-to-climate-change/
>>>
>>> * maybe it's just as well not to be credited in association with such a
>>> poorly written article - just what new habitat are the Surf Clams moving
>>> into, please? Are they going north, or into deeper water, or what?
>>>
>>> fred.
>>> ------------------------------------------------------------
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>>> Fragile Inheritance Natural History
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>>
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