We (BCAS/BCNHC) are located on the Taunton River in an area considered esturine/brackish.
We are near or at the upper limit of the estuary. At high tide the water reads
about 16-18 ppt. At low tide it is below our meager detectable limits. (an
aquarium salinity meter) Open ocean is 32 ppt.
At high tide we can siene up juvi. winter flounder and the occasional other
marine species. At low tide we have caught bluegills and largemouth bass.
The typical esturine species are always present in varying ratios.
Brian Bastarache
Natural Resources Dept.
Bristol Co. Agricultural School/
Bristol Co. Natural History Center
135 Center St.
Dighton, MA 02715
>--Bruce Stallsmith
>Huntsville, AL, US of A
>
>
>The difference can be very small; for instance, many freshwater fishes like
>sunfish and shiners can't tolerate more than 2 ppt salinity (or 1.002
>specific gravity, approximately). But different people will tell you
>different cutoffs, depending on what processes or organisms you're dealing
>with.
>
>--Bruce Stallsmith
>Huntsville, AL, US of A
>
>>From: Moontanman_at_aol.com
>>Reply-To: nanfa_at_aquaria.net
>>To: nanfa_at_aquaria.net
>>Subject: NANFA-- Freshwater/brackish
>>Date: Fri, 18 Oct 2002 05:08:57 EDT
>>
>>Would anyone like to give a cut off point that marks the official
>>difference
>>between freshwater and brackish water in specific gravity?
>>
>>Moon
>/"Unless stated otherwise, comments made on this list do not necessarily
>/ reflect the beliefs or goals of the North American Native Fishes
>/ Association"
>/ This is the discussion list of the North American Native Fishes Association
>/ nanfa_at_aquaria.net. To subscribe, unsubscribe, or get help, send the word
>/ subscribe, unsubscribe, or help in the body (not subject) of an email to
>/ nanfa-request_at_aquaria.net. For a digest version, send the command to
>/ nanfa-digest-request_at_aquaria.net instead.
>/ For more information about NANFA, visit our web page, http://www.nanfa.org
/-----------------------------------------------------------------------------
/"Unless stated otherwise, comments made on this list do not necessarily
/ reflect the beliefs or goals of the North American Native Fishes
/ Association"
/ This is the discussion list of the North American Native Fishes Association
/ nanfa_at_aquaria.net. To subscribe, unsubscribe, or get help, send the word
/ subscribe, unsubscribe, or help in the body (not subject) of an email to
/ nanfa-request_at_aquaria.net. For a digest version, send the command to
/ nanfa-digest-request_at_aquaria.net instead.
/ For more information about NANFA, visit our web page, http://www.nanfa.org