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Hi Patricia,
thanks for the neat reference. The sea-wall Dartmouth site my
daughter and I studied is located next to the former Dartmouth Marine
Slips, soon to undergo residential/commercial re-development. It is
difficult to say how TBT and other pollution has effected the local
marine life. The site is chock-full of barnacles and periwinkles in the
lower intertidal zone, and big mussels in the subtidal zone...
Dusan Soudek
Patricia L. Chalmers wrote:
> Hi there,
>
> Not about barnacles particularly, but there was an article in
> the October 12 issue of The Coast (the Halifax independant weekly
> newspaper) which might be of more general interest. The article is by
> Neal Ozano and is entitled "Chemical Harbour". He reported on
> research by Camille Coray (a grad student) on pollution in Halifax
> Harbour and its impact on marine life. Among other case studies, she
> is examining the effects of Tributyltin, or TBT (used as a fungicide
> in wood, and as an anti-fouling agent in marine paints) and its
> effects on Dog Whelks.
>
> The article can be found on the archives of the Coast at
> www.thecoast.ca ; the link to the article itself is rather long, at
> http://www.thecoast.ca/1pubicindex.lasso?-token.editorialreferral=149938.113118
>
>
> Cheers,
>
> Patricia L. Chalmers
> Halifax
>
>
>
>
> At 07:42 AM 23/10/2006 -0300, you wrote:
>
>> Hi,
>> any barnacle experts out there? My daughter is doing a Grade 11
>> biology project on the effect of tides on a barnacle population in
>> Halifax Harbour. (On Saturday afternoon, we have spent a cold and
>> windy hour in a canoe at the mouth of Dartmouth's "Sawmill River,"
>> measuring and counting barnacles on a wooden seawall.)
>> All the individuals we saw looked morphologically identical, even
>> though there were several size classes present, and we assume that
>> they all belonged to the same species, Northern Rock Barnacle
>> (Balanus balanoides). Is this the common intertidal zone barnacle
>> species in Nova Scotia? Could someone confirm our species ID? Many
>> thanks!
>> Dusan Soudek
>
>
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