[Coral-List] Bleaching in the Caymans
alan.e.strong at noaa.gov
alan.e.strong at noaa.gov
Fri Sep 25 10:32:55 EDT 2009
I was chatting on-line with Ernesto last evening...
Note the above link from our Coral Reef Watch site.
SSTs at the Caymans are presently running higher than anything we've
ever seen [in this decade] at our Virtual Station there. A bit of a
worry. The good news is the "fall" downturn in SST is close at hand.
Jim Hendee said the following on 9/25/2009 8:43 AM:
> Ernesto and Coral-Listers,
> Several days ago Croy McCoy answered our queries for field
> verification to our bleaching ecoforecasts (starting Sep 2) at
> http://ecoforecast.coral.noaa.gov/index/0/LCIY2/station-forecasts. Here
> is his subjective assessment, with hopes for follow-up:
> "...I did a dive this morning [Sep 23], ~90-100% of corals on deep
> terrace reef and ~30% down the wall to ~100ft, with a median I would
> say of ~80% of all corals exhibiting some form of bleaching
> (location was at White Stroke Canyon, North Wall). Though the # of
> colonies bleached at depth on the wall (plating form) was a bit
> lower, some colonies were bleached in their entirety. Taking an
> educated guess to quantify, I would say we have moderate moving on
> to severe bleaching, that is well on its way."
> EWeil wrote:
>> I have just been informed by Croy McCoy that they are having an intense and widespread bleaching event in Grand Cayman. He went
>> diving yesterday and found totally bleached corals down to 30 m, observations indicate that close to 100% of scleractinians
>> showed bleaching signs in deeper environments, and around 80% in shallower habitats. Water temps. have been above 29 Celcius
>> since June (Hobo data). I will be conducting disease surveys in mid-November, so if anything like what we saw in 2005 with WPD
>> and YBD outbreaks during and after the massive bleaching occurs here, we will probably have a chance to document this in our
>> permanent survey transects around the island. Croy will be conducting quantitative surveys and tagging colonies in the next days.
>> On the other hand, here in Puerto Rico, there are no signs of a bleaching event. Just the usual, a few pale colonies here and
>> there. Same situation observed during our disease surveys last week in Grenada.
>> Dr. Ernesto Weil
>> Department of Marine Sciences
>> University of Puerto Rico
>> PO BOX 3208
>> Lajas PR 00667
>> Pho: (787) 899-2048 x. 241
>> Fax: (787) 899-5500 - 2630
>> Coral-List mailing list
>> Coral-List at coral.aoml.noaa.gov
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Alan E. Strong, Ph.D.
NOAA Coral Reef Watch, Senior Consultant
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National Oceanic and Atmospheric Administration
NOAA Coral Reef Watch Program
e-mail: Alan.E.Strong at noaa.gov
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