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Subject: Selectivity og fishing gear.
From: Eduardo Sendra <[log in to unmask]>
Reply-To:Academic forum on fisheries ecology and related topics <[log in to unmask]>
Date:Mon, 30 Sep 1996 12:46:22 ARG

text/plain (30 lines)

>From edsendra Mon, 30 Sep 96 12:33:53 ARG remote from ilpla
>Received: by (UUPC/PcCorreo 3.0) with UUCP; Mon, 30 Sep 96 12:33:53 ARG
>Date: Mon, 30 Sep 96 12:33:53 ARG
>From: Eduardo Sendra <[log in to unmask]>
>Message-ID: <[log in to unmask]>
>X-Mailer: UUPC/PcCorreo 3.0
>To: [log in to unmask]
>Subject: Selectivity og fishing gear.
>Dear Colleagues:
>Our work at the FISH ECOLOGY SECTION encompass fish population
>assessment in lake ecosystems of central Argentina.
>Demographic analysis is carried out in order to assess
>productivity of fish populations from pampasic lakes and
>comparisons with historic data should be made. Pampasic lakes
>are shallow (1-3 meters) which imposes limitations on sampling
>options. Sampling methods, included the use of the same gear
>throughout the study ie. bag seine and a tailored gang of gill
>nets. Since data corrections for net selectivity induced bias
>must be made in order to obtain valid population length
>frequency distributions, can anyone give me references useful
>for calibrating both sampling methods. The relative efficiency
>of both gears has been difficult to estimate for some 17
>species which inhabit those water bodies.Thanks.
>Eduardo Sendra.
>Institute of Limnology Dr. Raul A Ringuelet.

                                        Eduardo Sendra
                                        [log in to unmask]

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