NANFA-L-- Re: nanfa-l-digest V1 #249

Laura Burbage (
Sat, 7 May 2005 11:30:21 -0700 (PDT)

Quite true, in _some_ cases However, it is
unfortunate that most other processes are overlooked,
no matter what the problem is. Another problem is
that restoration goals can be restrictively
fish-focused, especially to a single species. While
some fish may be indicator species of the ecosystem,
fish alne do not an ecosystem make. For example, many
projects will introduce large woody debris that has
historically been removed from the channel. However,
few projects examine the ability of the finished
project to recruit large woody debris and other
allochtanous inputs on its own. Attention to
morphology alone won't address this. Bank morphology
also won't necessarily address chemical inputs or the
hydrograph. Attention needs to be paid to _all_
components of the system for the functions of the
environment to be truly restored.


Date: Fri, 6 May 2005 14:26:01 -0500 (CDT)
From: Peter Unmack <peter.lists at>
Subject: Re: Subject: Re: NANFA-L-- The myth of

On Fri, 6 May 2005, Laura Burbage wrote:

> Lastly, my BIG beef with many restoration projects,
and even much of
> restoration literature, is that it often focuses on
geomorphology and
> ignores the biological processes that comprise
healthy systesms.

In terms of-in-least some (maybe most?) fishes,
geomorph is often the
major problem that is screwing up their habitat, as
ultimately their
habitat is created and determined by geomorphic
processes. If you
those, you change the configuration and
characteristics of the stream,
which potentially changes the available habitat.
Which is not to say
is the only important thing, but it-in-least some
cases it is very

But I understand and agree with your points.

Peter Unmack

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