41
Multibeam Sonar Mapping and Scallop Stock Assessment: GIS Data Integration in Support of Sustainable Fisheries Management Gerry Sutton O.Tully, J. Hickey: BIM A. Hervas:TCD X. Monteys: GSI

Gerry Sutton O.Tully, J. Hickey: BIM A. Hervas:TCD X. Monteys: GSI

  • Upload
    lada

  • View
    47

  • Download
    1

Embed Size (px)

DESCRIPTION

Multibeam Sonar Mapping and Scallop Stock Assessment: GIS Data Integration in Support of Sustainable Fisheries Management. Gerry Sutton O.Tully, J. Hickey: BIM A. Hervas:TCD X. Monteys: GSI. Project Overview. BIM-Main project 2002-2004 ( MBES surveying commenced in 2001 ) - PowerPoint PPT Presentation

Citation preview

Page 1: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI

Multibeam Sonar Mapping and Scallop Stock Assessment:

GIS Data Integration in Support of Sustainable Fisheries Management

Gerry Sutton O.Tully, J. Hickey: BIM

A. Hervas:TCDX. Monteys: GSI

Page 2: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI

HYDRO-04

Project Overview

BIM-Main project 2002-2004 – (MBES surveying commenced in 2001)

Main objectives:– To provide key info for fisheries development and

management– Stock levels assessment– Physical and environmental controls on recruitment

Page 3: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI

HYDRO-04

Scallop Project –Main Elements

Application of biological stock assessment models-sampling program (TCD/Kilmore Coop)

Sedimentary characterisation and ID beds (CMRC)

Fine resolution hydrodynamic model-tidal/larval circulation (MARCON)

Page 4: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI

HYDRO-04

Background to Mapping Programme

Early US/Canadian programs based on water depth or commercial effort- crude sediment maps only

Scallop preference for sand/gravel MBES surveys revealed sediment heterogeneity The work of Kostylev et al (2001) suggested:

– strong influence of sediment type on scallop distribution– scallop abundance and fishing success can be predicted from

multibeam backscatter data

Page 5: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI

HYDRO-04

Mapping program main elements

High resolution mapping of seabed morphology and sedimentary facies in scallop grounds

Determine and refine bs/stock density correlation

Determine high abundance areas within known grounds

Apply results in new areas

Page 6: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI

HYDRO-04

To date:

MBES coverage-Bathy/BS complex heterogenous seabed characterised by small sand and gravel

waves and elongate well organised dune-like bedforms Two dominant acoustic facies sediment types clearly visible Concept proved: confirmed sharp correlation between bs and

stock density Other aspects are far advanced e.g:

Final processing/analysis Towed video GT completedBathymetric tidal reduction GIS Visualisation-IntegrationGranulometry completed Dissemination

Page 7: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 8: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 9: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 10: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 11: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 12: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 13: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 14: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 15: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 16: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 17: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI

Sled mounted U/W video camera was towed across seabed to collect continuous imagery throughout 1km transects within a representative selection of sediment facies throughout study area. Video signals were encoded with DGPS allowing video image position to be accurately overlain and correlated with seabed facies maps

Page 18: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 19: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 20: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 21: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 22: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 23: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 24: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 25: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 26: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 27: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 28: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 29: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 30: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 31: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 32: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 33: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 34: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI

HYDRO-04

Conclusions

EM 1002 data is more than adequate for bathy and habitat/biotope mapping-NB operator settings critical for BS not just sounding

Near offshore Ireland tidal model needs to be resolved Strong MBES BS/Scallop relationship exists for this stock/area MBES BS predictive for fishing success High degree of heterogeneity in sediments both PS and rugosity-

complex range of bedforms even in uniform area Sediment samples relatively poor GT alone High resolution video v.useful/required for GT Powerfull integration/visualisation tools required Seabed classification technology has arrived but NBB

GT/Slopes/Operator Settings

Page 35: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI

HYDRO-04

Acknowledgments

•BIM-NDP

•Kilmore Fishermans Co-op-skippers/crews

•Marine Institute-All vessel ops team and crews,

•MI-Fisheries-Colm Lordan-UW video

•GSI-NSS team

•BlueGlen-Tim McCarthy

•CMRC-Volunteers!

Page 36: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 37: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 38: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 39: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 40: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI
Page 41: Gerry Sutton  O.Tully, J. Hickey: BIM  A. Hervas:TCD X. Monteys: GSI