[Cnidaria] Brackish Water Lagoons (Europe)
British Marine Life Study Society
cnidaria@uci.edu
Fri, 4 Jul 2003 11:31:47 +0100
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Hello,
Has anybody got an first hand experience of brackish water lagoons in =
northern Europe?
This is specifically for the higher salinity amplitude that can be =
endured for sea anemones in the short and long term?
I have found with aquarium study the tolerance of increased salinity =
with intertidal species, e.g Actinia equina, is very small, 38 ppt =
being fatal within a few days.=20
Specifically, Widewater lagoon (w/o freshwater feed) where seawater is =
being allowed through a pipeline into the lagoon.
Web pages:
Widewater
http://ourworld.compuserve.com/homepages/BMLSS/brackish.htm
Salinity:
http://ourworld.compuserve.com/homepages/BMLSS/WWater-salinity.htm
Widewater is a landlocked brackish lagoon approximately 1200 metres =
long and 50 metres at its widest point when the lagoon is in flood. It =
was created by Man from the original Adur estuary after been landlocked =
by longshore drift and violent storms. The waters are replenished by the =
sea, which filters up through the basin of the lagoon on very high =
tides, and also by rain water. There is a dramatic rise in the level =
after heavy rainfall. Man has built up banks on the perimeter of the =
lagoon to prevent flooding to this nearby reclaimed land, now turned to =
residential use. The quantity of water contained within the lagoon and =
salinity are liable to fluctuate wildly. The flood plain covers an area =
of 18.5 acres.
by Steve Barker
Cheers
Andy Horton.
glaucus@hotmail.com
><< ( ( ( ' > =20
British Marine Life Study Society (formed 6 June 1990)
http://ourworld.compuserve.com/homepages/BMLSS/
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Shorewatch Biological Recording
http://ourworld.compuserve.com/homepages/BMLSS/watch2.htm
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<DIV><FONT face=3DArial>Hello,</FONT></DIV>
<DIV><FONT face=3DArial></FONT> </DIV>
<DIV><FONT face=3DArial>Has anybody got an first hand experience of =
brackish water=20
lagoons in northern Europe?</FONT></DIV>
<DIV><FONT face=3DArial></FONT> </DIV>
<DIV><FONT face=3DArial>This is specifically for the higher salinity =
amplitude=20
that can be endured for sea anemones in the short and long =
term?</FONT></DIV>
<DIV><FONT face=3DArial></FONT> </DIV>
<DIV><FONT face=3DArial>I have found with aquarium study the tolerance =
of=20
increased salinity with intertidal species, e.g Actinia equina, is =
very=20
small, 38 ppt being fatal within a few days. </FONT></DIV>
<DIV><FONT face=3DArial></FONT> </DIV>
<DIV><FONT face=3DArial>Specifically, Widewater lagoon (w/o freshwater =
feed) where=20
seawater is being allowed through a pipeline into the =
lagoon.</FONT></DIV>
<DIV><FONT face=3DArial></FONT> </DIV>
<DIV><FONT face=3DArial>Web pages:</FONT></DIV>
<DIV><FONT face=3DArial>Widewater</FONT></DIV>
<DIV><A =
href=3D"http://ourworld.compuserve.com/homepages/BMLSS/brackish.htm"><FON=
T=20
face=3DArial>http://ourworld.compuserve.com/homepages/BMLSS/brackish.htm<=
/FONT></A><BR><FONT=20
face=3DArial>Salinity:</FONT></DIV>
<DIV><A=20
href=3D"http://ourworld.compuserve.com/homepages/BMLSS/WWater-salinity.ht=
m"><FONT=20
face=3DArial>http://ourworld.compuserve.com/homepages/BMLSS/WWater-salini=
ty.htm</FONT></A></DIV>
<DIV><FONT face=3DArial></FONT> </DIV>
<DIV>
<BLOCKQUOTE><A href=3D"file:///C:/Web%20Site/Brackish.htm"><FONT=20
face=3DArial>Widewater </FONT></A><FONT face=3DArial>is a landlocked =
brackish=20
lagoon approximately 1200 metres long and 50 metres at its widest =
point when=20
the lagoon is in flood. It was created by Man from the original =
</FONT><A=20
href=3D"file:///C:/Web%20Site/Adur.htm"><FONT =
face=3DArial>Adur</FONT></A><FONT=20
face=3DArial> estuary after been landlocked by </FONT><A=20
href=3D"file:///C:/Web%20Site/Lowtide.htm#Longshore%20drift"><FONT=20
face=3DArial>longshore drift</FONT></A><FONT face=3DArial> and violent =
storms. The=20
waters are replenished by the sea, which </FONT><A=20
href=3D"file:///C:/Web%20Site/WWater-salinity.htm#Bubbles"><FONT=20
face=3DArial>filters up </FONT></A><FONT face=3DArial>through the =
basin of the=20
lagoon on very high tides, and also by rain water. There is a dramatic =
rise in=20
the level after heavy rainfall. Man has built up banks on the =
perimeter of the=20
lagoon to prevent flooding to this nearby reclaimed land, now turned =
to=20
residential use. The quantity of water contained within the lagoon and =
salinity are liable to fluctuate wildly. The flood plain covers an =
area of=20
18.5 acres.</FONT></BLOCKQUOTE>
<BLOCKQUOTE>
<DIV align=3Dright><FONT face=3DArial>by </FONT><A=20
href=3D"mailto:barkerclan@lineone.net"><FONT face=3DArial>Steve=20
Barker</FONT></A></DIV></BLOCKQUOTE></DIV>
<DIV><FONT face=3DArial></FONT> </DIV>
<DIV><FONT face=3DArial></FONT> </DIV>
<DIV><FONT face=3DArial>Cheers</FONT></DIV>
<DIV><FONT face=3DArial></FONT> </DIV>
<DIV><FONT face=3DArial>Andy Horton.<BR></FONT><A=20
href=3D"mailto:glaucus@hotmail.com"><FONT=20
face=3DArial>glaucus@hotmail.com</FONT></A><BR><FONT =
face=3DArial>><< ( ( (=20
' > <BR>British Marine Life Study =
Society =20
(formed 6 June 1990)<BR></FONT><A=20
href=3D"http://ourworld.compuserve.com/homepages/BMLSS/"><FONT=20
face=3DArial>http://ourworld.compuserve.com/homepages/BMLSS/</FONT></A><B=
R><FONT=20
face=3DArial>------------------------------------------------------------=
-------------<BR>Shorewatch=20
Biological Recording<BR></FONT><A=20
href=3D"http://ourworld.compuserve.com/homepages/BMLSS/watch2.htm"><FONT =
face=3DArial>http://ourworld.compuserve.com/homepages/BMLSS/watch2.htm</F=
ONT></A></DIV>
<DIV><FONT face=3DArial></FONT> </DIV>
<DIV><FONT face=3DArial>><< ( ( ( ' =
></FONT></DIV></BODY></HTML>
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