Re: NANFA-- Rainbow darters in MD

Bruce Stallsmith (
Mon, 27 Nov 2000 14:58:35 -0500

OK, I'm getting a better handle on the rainbow darters in MD question. Has
their appearance down the Potomac basin been interpreted purely as the
result of human activities such as stream alterations/community
disturbances, or is it possible that this is a natural range expansion?
That's a big question that's not easy to answer; any literature refs (Dave,

--Bruce Stallsmith
Huntsville, AL

>From: Christopher Scharpf <>
>To: NANFA Mailing List <>
>Subject: Re: NANFA-- Rainbow darters in MD
>Date: Mon, 27 Nov 2000 12:03:46 -0400
> >I haven't seen the new AC yet, but I assume the estimates are from the
> >MBSS data- which while generally good, excluded 4th order streams and
> >(which they have since corrected). Most of the streams occupied by
> >in MD are 4th + order. The estimates of 600 darters are way off- I'd
> >we have 600 Maryland specimens in the Frostburg fish collection...
>I, too, scrathched my head over this number when I edited the article, for
>have collected in Sideling Hill Creek several times and it is lousy with
>rainbows. I left the number unquestioned since I assumed it was referring
>native populations as opposed to introduced. The >600 population estimate
>published on page 34 of the publication cited in the AC article, "From the
>Mountains to the Sea: The State of Maryland's Freshwater Streams."
>Chris Scharpf

Get more from the Web. FREE MSN Explorer download :

/"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
/ To subscribe, unsubscribe, or get help, send the word
/ subscribe, unsubscribe, or help in the body (not subject) of an email to
/ For a digest version, send the command to
/ instead.
/ For more information about NANFA, visit our web page,