University of Cape Town
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.



Department of Mathematics and Applied Mathematics, University of Cape Town