Publication Date

8-2025

Series Number

350

Publisher

Department of Primary Industries and Regional Development, Western Australia

City

Perth

ISBN

978-1-925415-06-3 (Print) 978-1-925415-07-0 (Online)

ISSN

1035-4549 (Print) 2202-5758 (Online)

Abstract

This report provides a time series (2009 – 2024) of the total number of recreational vessel (powerboat) retrievals at a spatial (boat ramp) and temporal (annual, month, hour) resolution for 32 boat ramps distributed from Wyndham to Esperance. This time series has been developed using a workflow that outlines each step, from acquiring raw video data to producing a completed time series of vessel retrievals. As part of this workflow, modelling was undertaken to impute counts of vessel retrieval for sites and hours for which data had not been read, or for which there were significant outages. Features within the General Additive Model (GAM) include inherent spatial and temporal variables (i.e., bioregion, site, month), as well as climatic variables (i.e., wind speed, wave height).

Number of Pages

93

Keywords

Remote cameras, Boat ramps, powerboats, Vessel retrieval, Time Series, Recreational fishing, Fisheries management

Disciplines

Aquaculture and Fisheries

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