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Study Society |
Algae Homepage (Univ.
of Galway)
Algae Homepage (Univ. of Galway)
(Latest URL in September 1999)
Algae-L (EForum)
AKVARISTEN (Text in Norwegian,
pictures of algae in aquaria)
AZP
Toxin
British Phycological Society
Harmful
Algal Blooms
Pressing
Seaweeds Page
Revised
Checklist of British Marine Algae (Acrobat format file)
Search
for a Seaweed (scientific names only)
Seaweeds (Books)
Seaweeds
(Links to other sites)
Smart
Groups Marine Algae of the NE Atlantic Portfolio
Sussex Seaweed Project
These URLS keep changing
The seaweeds are
fertile and there is no reason why it will fail to establish itself as
an addition to the British marine fauna. The alga is one of the brown kelps
similar to the Dabberlocks, Alaria esculenta. (Report in the Vernal/Summer
1997 Glaucus).
The alien Japweed,
Sargassum muticum, is found all along the English Channel, and has
been around since the 1960s.
During the day the phytoplankton photosynthesise and reproduce, the phenomenon called 'blooming'. The greatest 'blooming' occurs in the brightest sunlight is associated with hot weather and higher sea temperatures.
Photosynthesis
of the phytoplankton produces oxygen, which can supersaturate the surface
waters of the sea, However, at the later stages of the phytoplankton blooms
the nutrients they need are exhausted and the algae die and sink to the
bottom where they decay, a process which uses up oxygen and creates hypoxic
conditions (a deficiency of dissolved oxygen). There are many records of
plankton blooms causing mass mortalities of benthic fauna.
e.g. Mass
Mortality of the Heart Urchin.
Phaeocystis
is a prymnesiophyte flagellate that reproduces by fission at a phenomenal
rate and forms large colonies about 1 mm in diameter. It exudes the sulphur
compound Dimethyl sulphide
(DMS ) which raises local levels in the
atmosphere.
The seaweed Cladophora rupestris is a widespread algae invariably growing on the brown wrack Serratus fucatus where is grazed by the Flat Periwinkle, Littorina mariae.
A Rock
Goby, Gobius paganellus, in aquaria, poking its head out of
a rock strewn with the filamentous algae Cladophora which spreads
by its rhizoidal base.
Red Tide:
in Killary fjord, southern Ireland, the plankton bloom in the late summer
affects the local mussel harvest but causes no damage to the salmon farm.
Peter Biddulph.
Algae:
New Scientific Names
Changing scientific
names are always a bit of nuisance to Editors. It is understandable when
it is because of new scientific research, but is less appealing when the
change occurs in the literature applying the rules of precedent over the
names. This is the reason why some of the very common British seaweeds
are now known by different names. In the family Gigartinaceae, the common
and well known
Gigartina stellata has now been given the name of
Mastocarpus stellatus. The Pepper Dulse, known as Laurencia pinnatifida
is now called Osmundea pinnatifida.
Botanica Marina
takes papers on all marine plants, phytoplankton, seaweeds, fungi, seagrasses
and even marine
bacteria.
Dr Gerald T.
Boalch, F.I. Biol.,
Editor-in-Chief,
BOTANICA MARINA,
The Laboratory,
Citadel Hill,
Plymouth PL1
2PB,
U.K.
Algae-L is
a discussion list on any aspect of freshwater, marine and
terrestrial algae,
including seaweeds.
Archives of past messages can be found at:
http://listserv.heanet.ie/algae-l
Other information regarding the list can be found at
http://seaweed.nuigalway.ie/algae-l/default.html
Algae
(Adur Estuary) List
Algae
(Widewater Lagoon) List
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