Hi David, i cant answer that one.  Mya is still common around
here....is it as common as 30 years ago? that would require data to
answer that question....all i can do is note Spisula can tolerate a
range of habitat types physiologically.

On 7/19/19, David Kirsh <[log in to unmask]> wrote:
> 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.
>>>> ------------------------------------------------------------
>>>>          Frederick W. Schueler & Aleta Karstad
>>>>          Fragile Inheritance Natural History
>>>> Mudpuppy Night in Oxford Mills -
>>>> https://www.facebook.com/MudpuppyNight/
>>>> 'Daily' Paintings - http://karstaddailypaintings.blogspot.com/
>>>> 4 St-Lawrence Street Bishops Mills, RR#2 Oxford Station, Ontario K0G
>>>> 1T0
>>>>   on the Smiths Falls Limestone Plain  44.87156° N 75.70095° W
>>>> (613)258-3107 <bckcdb at istar.ca> http://pinicola.ca/
>>>> ------------------------------------------------------------
>>>> "Feasting on Conolophus to the conclusion of consanguinity"
>>>>  -
>>>> http://www.lulu.com/shop/frederick-w-schueler/feasting-on-conolophus-to-the-conclusion-of-consanguinity-a-collection-of-darwinian-verses/paperback/product-23517445.html
>>>> ------------------------------------------------------------
>>>>
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