Vanvoorstia bennettiana   ((Harvey) Papenfuss)


 
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Bennett's Seaweed
(Vanvoorstia bennettiana)

 
syn. Claudea bennettiana (Harvey), Sonderia bennettiana ((Harvey) Müller ex J. Agardh)

 
distribution:

Australia: New South Wales

 
local name:

Bennett's Seaweed - Australia

 
size: ?

extinction date: after 1886

 
Bennett's Seaweed is probably the first marine species of alga, that was officially declared extinct.

This small red alga has always occurred on only two places within Sydney Harbour, on the coast of New South Wales and was obviously quite common at the time when it was discovered. It was described in the year 1859.

The extinction of this species was indiced by heavy contamination of the water with suspended sediments, caused by human activities, which occluded the very fine clathrate sprouts of the algae and hence inhibited the essential photosynthesis.

 
left:

Bennett's Seaweed (Vanvoorstia bennettiana)


Depiction from 'William Henry Harvey: Phycologia Australica; or, A History of Australian Seaweeds; comprising coloured figures and descriptions of the more characteristic marine algae of New South Wales, Victoria, Tasmania, South Australia, and Western Australia and a synopsis of all known Australian algae. London, L. Reeve, 1858-63'

http://www.biodiversitylibrary.org
 
left:

Bennett's Seaweed (Vanvoorstia bennettiana); vergrößerter Seitenast


Depiction from 'William Henry Harvey: Phycologia Australica; or, A History of Australian Seaweeds; comprising coloured figures and descriptions of the more characteristic marine algae of New South Wales, Victoria, Tasmania, South Australia, and Western Australia and a synopsis of all known Australian algae. London, L. Reeve, 1858-63'

http://www.biodiversitylibrary.org
 
left:

Bennett's Seaweed (Vanvoorstia bennettiana); stark vergrößerter Ausschnitt


Depiction from 'William Henry Harvey: Phycologia Australica; or, A History of Australian Seaweeds; comprising coloured figures and descriptions of the more characteristic marine algae of New South Wales, Victoria, Tasmania, South Australia, and Western Australia and a synopsis of all known Australian algae. London, L. Reeve, 1858-63'

http://www.biodiversitylibrary.org

 
References: