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MARAM_Tristan_2013_MAR_03.pdf (2.06 MB)

A juvenile index from biomass survey data

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posted on 2022-08-29, 07:11 authored by Susan HollowaySusan Holloway, Doug ButterworthDoug Butterworth

A number (12) of biomass surveys has been completed thus far at each of the four islands of the Tristan da Cunha group of islands. For each season there is usually a Leg 1 survey conducted around Aug/Sept and then a further Leg 2 survey conducted around Feb/Mar. This document aims at providing a brief summary of the number of juveniles either <60mm or <70mm CL in each sample (for Nightingale, Inaccessible and Tristan), and <70mm or <75mm CL for Gough. 

Note that the March 2011 surveys at the inner islands were conducted just prior to the OLIVA incident.

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Department of Mathematics and Applied Mathematics, University of Cape Town

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    Marine Resource Assessment and Management Group (MARAM)

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