[Coral-List] Disease

[Victor Gomelyuk]

Dear colleagues,
 
I would appreciate your help in identification of this coral disease:
http://i11.photobucket.com/albums/a166/VGomelyuk/BlackBanddisease.jpg
 
http://i11.photobucket.com/albums/a166/VGomelyuk/Blackbanddiseaseclose.jpg
 
S12010.893 
E1360 40.447
Arafura sea, Gove/Nhulunbuy, Northern Territory, Australia
 
Is it really a black band disease - or something else?
 
Thank you in advance.
 
By the way, I'd like to repeat my question: can anyone explain me the difference between "coral reef" and "coral community" in quantitative terms? 
 
 
Victor Gomelyuk
 
 
 
 
Dr Victor Gomelyuk
Marine Scientist
Parks & Wildlife Commission
of the Northern Territory
Darwin,  NT,  Australia 0812
tel +61(0)889209281
fax 61(0)889209222