[Coral-List] Return of diadema helped reefs?
Ed Blume
edblume at mailbag.com
Thu Jun 11 10:39:47 EDT 2009
Recently snorkeling in Akumal Bay, Mexico, I was diadema the size of
basketball. Have their return improved coral health anywhere in the
Caribbean. It hasn't in Akumal Bay, which is under assault in many ways.
Ed Blume
Communications/Outreach
RENEW Wisconsin
222 S. Hamilton St.
Madison, WI 53703
608.819.0748
Home page: http://www.renewwisconsin.org
RENEW Wisconsin Blog: http://www.renewwisconsinblog.org
Milwaukee Renewable Energy Blog:
http://renewableenergymilwaukee.blogspot.com
Madison Peak Oil Group Blog: http://www.madisonpeakoil-blog.blogspot.com
Skype: edblume
-----Original Message-----
From: coral-list-bounces at coral.aoml.noaa.gov
[mailto:coral-list-bounces at coral.aoml.noaa.gov] On Behalf Of
coral-list-request at coral.aoml.noaa.gov
Sent: Friday, May 29, 2009 11:00 AM
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Subject: Coral-List Digest, Vol 9, Issue 27
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Today's Topics:
1. Re: Questions - Measuring Acropora (Sebastian Striewski)
2. Re: Coral-List Pizarro - Questions measuring Acropora
(Kimberly Woody)
3. Re: Questions - Measuring Acropora (andrew ross)
----------------------------------------------------------------------
Message: 1
Date: 28 May 2009 18:26:39 +0200
From: "Sebastian Striewski" <sebastian.striewski at rub.de>
Subject: Re: [Coral-List] Questions - Measuring Acropora
To: "Valeria Pizarro" <valepizarro at yahoo.com>, "coral list"
<coral-list at coral.aoml.noaa.gov>
Message-ID: <4A1EBB3F.6010009 at rub.de>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Dear V. Pizarro,
an easy way to calculate a planar area might be done with a modified
point intersept transect taking pictures and analysing them using the
software CPCe from Kohler et al 2006,
http://www.nova.edu/ocean/cpce/ using thefunction "planar area analysis".
This very helpfull software allows to calibrate images taken during a
transect and analysing areas computer based.
We used this method in the Red Sea just recently. A simple plastic 1m2
frame was positioned along a linetransect every 5meter and detailed
pictures taken from the area underlying the frame. Back in the
laboratory those pictures were than easily analysed with the mentioned
software and data exported towards Excel from Windows.
Besides very good to hear from recovering Acropora palmata!
Greetings, Striewski
Valeria Pizarro schrieb:
> Dear coral-listers,My colleagues and I are starting a project on Acropora
palmata and A. cervicornis in the Caribbean coast of Colombia. We are
sampling the area of the Tayrona National Marine Park. We are mapping the
location of the Acropora spp patches, measuring these areas and finding the
abundance within each area. With the latest we had had problems because it
has been hard to tell apart one colony from another, especially when the
colonies are big or patches dense. The other problem is to set the transects
without damaging any of the colonies.I anyone can help us with an easy
method to measure Acroporids abundance we will be more than grateful.The
good news are that apparently at least for this area we are sampling
Acropora palmata seems to be recovering. One can see juvenile colonies
growing over dead Acropora colonies.thanks,Valeria
> ________________________________________Valeria PizarroAssociate
LecturerMarine Biology ProgramUniversidad Jorge Tadeo LozanoSanta Marta,
Colombia
>
>
>
____________________________________________________________________________
________
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------------------------------
Message: 2
Date: Thu, 28 May 2009 12:40:37 -0400
From: Kimberly Woody <Kimberly.Woody at noaa.gov>
Subject: Re: [Coral-List] Coral-List Pizarro - Questions measuring
Acropora
To: coral-list at coral.aoml.noaa.gov
Message-ID: <4A1EBE85.1050901 at noaa.gov>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Valeria,
The following publication may be helpful in your Acropora study:
Mayor PA; Rogers CS; Hillis-Starr ZM (2006) Distribution and abundance
of elkhorn coral, Acropora palmata and prevalance of white-band disease
at Buck Island Reef National Monument, St. Croix, US Virgin Islands.
Coral Reefs 25: 239-242.
If you cannot find it, I have a pdf copy and will be happy to send it to
you.
Cheers,
Kim
___________________________________________________
Kimberly Woody
Marine Biologist
NOAA's National Ocean Service
Center for Coastal Monitoring and Assessment
Biogeography Team
1305 East West Highway (SSMC4/9268), N-SCI-1
Silver Spring, MD 20910
Phone 301.713.3028 x229
Fax 301.713.4384
___________________________________________________
<>< http://ccma.nos.noaa.gov/about/biogeography <><
Note: The content of this message does not reflect any position
of the U.S. Government or of NOAA unless otherwise specified.
coral-list-request at coral.aoml.noaa.gov wrote:
> Send Coral-List mailing list submissions to
> coral-list at coral.aoml.noaa.gov
>
> To subscribe or unsubscribe via the World Wide Web, visit
> http://coral.aoml.noaa.gov/mailman/listinfo/coral-list
> or, via email, send a message with subject or body 'help' to
> coral-list-request at coral.aoml.noaa.gov
>
> You can reach the person managing the list at
> coral-list-owner at coral.aoml.noaa.gov
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of Coral-List digest..."
>
>
> Today's Topics:
>
> 1. Scholarships Dive GIS 2009 (Dive GIS 2009)
> 2. Questions - Measuring Acropora (Valeria Pizarro)
> 3. D.antillarum grey literature (Rogers, Alice)
> 4. REPLY FOR Jose in Colombia, LIONFISH info. (Katherine Cure)
>
>
> ------------------------------
>
> Message: 2
> Date: Wed, 27 May 2009 17:22:52 -0700 (PDT)
> From: Valeria Pizarro <valepizarro at yahoo.com>
> Subject: [Coral-List] Questions - Measuring Acropora
> To: coral-list at coral.aoml.noaa.gov
> Message-ID: <367850.49028.qm at web45115.mail.sp1.yahoo.com>
> Content-Type: text/plain; charset=iso-8859-1
>
> Dear coral-listers,My?colleagues?and I are starting a project on Acropora
palmata and A. cervicornis in the Caribbean coast of Colombia. We are
sampling the area of the Tayrona National Marine Park. We are mapping the
location of the Acropora spp patches, measuring these areas and finding the
abundance within each area. With the latest we had had problems because it
has been hard to tell apart one colony from another, especially when the
colonies are big or patches dense. The other problem is to set the transects
without damaging any of the colonies.I anyone can help us with an easy
method to measure Acroporids abundance we will be more than grateful.The
good news are that apparently at least for this area we are sampling
Acropora palmata seems to be recovering. One can see juvenile colonies
growing over dead Acropora colonies.thanks,Valeria
> ________________________________________Valeria PizarroAssociate
LecturerMarine Biology ProgramUniversidad Jorge Tadeo LozanoSanta Marta,
Colombia
>
>
>
____________________________________________________________________________
________
> ?Obt?n la mejor experiencia en la web!
> Descarga gratis el nuevo Internet Explorer 8.
> http://downloads.yahoo.com/ieak8/?l=e1
>
> ------------------------------
>
--
___________________________________________________
Kimberly Woody
Marine Biologist
NOAA's National Ocean Service
Center for Coastal Monitoring and Assessment
Biogeography Team
1305 East West Highway (SSMC4/9268), N-SCI-1
Silver Spring, MD 20910
Phone 301.713.3028 x229
Fax 301.713.4384
___________________________________________________
<>< http://ccma.nos.noaa.gov/about/biogeography <><
Note: The content of this message does not reflect any position
of the U.S. Government or of NOAA unless otherwise specified.
------------------------------
Message: 3
Date: Fri, 29 May 2009 06:50:32 -0700 (PDT)
From: andrew ross <andyroo_of72 at yahoo.com>
Subject: Re: [Coral-List] Questions - Measuring Acropora
To: Valeria Pizarro <valepizarro at yahoo.com>, coral list
<coral-list at coral.aoml.noaa.gov>, Sebastian Striewski
<sebastian.striewski at rub.de>
Message-ID: <209783.40680.qm at web50604.mail.re2.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1
Valeria,As Sebastian has suggested, CPCe is a nice way to start.Version 3.6
has an "accumulated lengths" feature. It's very good (and quicker/easier)
for branching thickets, though it won't give you % cover. A hollow PVC
graduated scale-pole should be light enough to not break branches, but will
be a headache in rough weather.?If you can stay very still in taking
pictures, wait for a bright, clear day and have at least 7-Megapixels in
your camera, you should be able to take >1.5mx1m photos (over the
scale-pole) and see branches and some detail of?disease,
predation?etc...?Figuring out the genets might be more difficult, but
different genets will often look a little different, particularly if
side-by-side for comparison. That can at least be a start.
A
--- On Thu, 5/28/09, Sebastian Striewski <sebastian.striewski at rub.de> wrote:
From: Sebastian Striewski <sebastian.striewski at rub.de>
Subject: Re: [Coral-List] Questions - Measuring Acropora
To: "Valeria Pizarro" <valepizarro at yahoo.com>, "coral list"
<coral-list at coral.aoml.noaa.gov>
Date: Thursday, May 28, 2009, 9:26 PM
Dear V. Pizarro,
an easy way to calculate a planar area might be done with a modified
point intersept transect taking pictures and analysing them using the
software CPCe from Kohler et al 2006,? ???
http://www.nova.edu/ocean/cpce/???using thefunction "planar area analysis".
This very helpfull software allows to calibrate images taken during a
transect and analysing areas computer based.
We used this method in the Red Sea just recently. A simple plastic 1m2
frame was positioned along a linetransect every 5meter and detailed
pictures taken from the area underlying the frame. Back in the
laboratory those pictures were than easily analysed with the mentioned
software and data exported towards Excel from Windows.
Besides very good to hear from recovering Acropora palmata!
Greetings, Striewski
Valeria Pizarro schrieb:
> Dear coral-listers,My colleagues and I are starting a project on Acropora
palmata and A. cervicornis in the Caribbean coast of Colombia. We are
sampling the area of the Tayrona National Marine Park. We are mapping the
location of the Acropora spp patches, measuring these areas and finding the
abundance within each area. With the latest we had had problems because it
has been hard to tell apart one colony from another, especially when the
colonies are big or patches dense. The other problem is to set the transects
without damaging any of the colonies.I anyone can help us with an easy
method to measure Acroporids abundance we will be more than grateful.The
good news are that apparently at least for this area we are sampling
Acropora palmata seems to be recovering. One can see juvenile colonies
growing over dead Acropora colonies.thanks,Valeria
> ________________________________________Valeria PizarroAssociate
LecturerMarine Biology ProgramUniversidad Jorge Tadeo LozanoSanta Marta,
Colombia
>
>
>? ?
???_________________________________________________________________________
___________
> ?Obt?n la mejor experiencia en la web!
> Descarga gratis el nuevo Internet Explorer 8.
> http://downloads.yahoo.com/ieak8/?l=e1
> _______________________________________________
> Coral-List mailing list
> Coral-List at coral.aoml.noaa.gov
> http://coral.aoml.noaa.gov/mailman/listinfo/coral-list
>
>???
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