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Coverage matters: identifying and mitigating sampling frame issues in recreational fishing surveys
No full textSurveys play an integral part in monitoring and maintaining sustainable recreational fisheries. For any probabilistic survey, the selection of a sampling frame (e.g., list of individuals or fishers) is an important decision because it influences the ability to provide unbiased estimates of recreational catch and effort. Undercoverage occurs when units of the target population (i.e., the population of interest) are missing from the frame population. This error can undermine the reliability of research advice generated from survey estimates. In this review, we: (i) define six sampling frame configurations that are commonly applied in probabilistic recreational fishing surveys; (ii) synthesise how coverage errors associated with each configuration have been addressed for marine recreational fisheries globally; (iii) outline approaches to identify and correct for coverage errors; and (iv) recommend how to future-proof coverage issues. In our six case studies, multiple types of undercoverage were identified and addressed to varying extents, depending on the characteristics of each fishery and type of sampling frame used. Generalised list frames (particularly phone lists) are arguably the most prone to undercoverage error. To assist in future-proofing surveys, we recommend: (1) considering coverage error during survey planning; (2) designing pilot surveys or scheduling concurrent surveys to evaluate and/or correct for potential bias; (3) recognising that coverage error often changes through time; (4) using technological or multi-frame approaches to mitigate coverage error; (5) considering model-based survey tools to correct for undercoverage; and (6) documenting the sampling frame and potential sources of coverage error in publications. These recommendations extend to inland recreational fisheries, commercial fishing surveys and fisheries-independent surveys
BEN Signage Installation Map - Shire of Shark Bay
No full textBEN Signage Installation Map - Shire of Shark Bayhttps://library.dpird.wa.gov.au/gis_bens/1058/thumbnail.jp
Marine heatwave conditions in Western Australia marine waters - 26th March 2025
No full textMarine heatwave (MHW) conditions across the state have persisted. Category 1 – Moderate conditions continue for the Gascoyne and South Coast Bioregions. The North Coast Bioregion has returned to Category 1 – Moderate conditions. The West Coast Bioregion remains warm but is not categorised as experiencing MHW conditions
Marine protected species identification guide 2025
No full textThe Western Australian aquatic environment is home to a number of species that are protected under international agreements and national or state legislation. Many of these species occur in areas where fishing takes place, sometimes resulting in interactions between fishers and protected species. An interaction is considered to be any physical contact between a person, fishing vessel or fishing gear and a protected species, including captures, entanglements and collisions.
This guide has been developed to help you identify some common marine protected species in Western Australia that you may encounter while fishing.
It has been divided into 5 sections:
• marine mammals, including whales, dolphins, dugongs, seals and sea lions
• reptiles (both freshwater and marine), including turtles, crocodiles and sea snakes
• bony fish and elasmobranchs, including sea horses, pipefish, sharks and rays
• seabirds
• shore birds
Please note that this guide is not an exhaustive list of marine protected species in WA.https://library.dpird.wa.gov.au/fr_fop/1041/thumbnail.jp
WA Insecticide Guide 2025 - Autumn Winter
No full textRegistered chemicals for broadacre crops in Western Australia.
The insecticides listed in the tables within this guide can be used on any crop appearing on the chemical label, if the rate used does not exceed the highest rate that is registered for use on that crop.
There are many products with different trade names that contain the same active ingredient. This list is not exhaustive and does not imply any specific recommendations of brand names.https://library.dpird.wa.gov.au/fc_pestfactswa/1020/thumbnail.jp
Managing lupin sclerotinia: know your risk and how to respond
No full textSclerotinia prevalence, particularly basal Sclerotinia (ground level infection) has increased significantly in Western Australia in the last five years. Since 2020, commercial crop surveys have found basal Sclerotinia more common in lupins than in canola, and it is difficult to manage. From 2021–2025 extensive research was conducted in the laboratory, glasshouse and field trials by research partners Department of Primary Industries and Regional Development (DPIRD), Centre for Crop Disease Management (CCDM), Mingenew Irwin Group (MIG) and lupin growers. Key new findings applicable to lupin growers are: Sclerotinia infects narrow-leaf lupin via two pathways: canopy and basal. Basal infection is more damaging, causing around 60% yield loss on infected plants, while canopy infection can cause up to 25% yield loss, mainly by infecting the main spike pods. On a paddock scale, canopy infection usually causes around 10% yield loss, increasing to 25% in a growing season with a wet spring and/or high disease pressure. A model from field data has been developed which allows for yield loss estimation based on disease incidence. Sclerotia contamination of harvested grain varies widely, but field research has found it is more common in trials with higher incidence of canopy infection. No consistently effective management strategies to reduce sclerotia grain contamination have been identified. An integrated disease management strategy for Sclerotinia canopy infection is being developed using data from 2021–2024 field trials. The approach includes agronomic, cultural, and chemical control options such as risk assessment (paddock, crop and season factors), delayed sowing, wider row spacing, lower seed rates, and applying a registered foliar fungicide from full flower to early pod emergence on the main spike. Employing a disease management strategy is only likely to be necessary and profitable in high-risk scenarios outlined in the Lupin Sclerotinia disease risk assessment guide. Research shows management is more economically viable in the medium-high rainfall zones of the Geraldton port zone, followed by the Kwinana North port zone. In contrast, the Albany port zone had limited disease incidence from 2021–2024, resulting in few significant responses to management. Effective options for reducing basal Sclerotinia infection in lupins are currently limited, as foliar fungicide applied during crop flowering is often ineffective. Ongoing research aims to identify the drivers for basal infection and potential management strategies. Gather annual data on the distribution and impact of Sclerotinia (canopy and basal) in commercial lupin crops in Western Australia. The unique WA environment requires that local research be undertaken, as it differs from other cropping regions in Australia. Expand our understanding of the epidemiology and the infection process of Sclerotinia in lupin. Identify the growing seasons and paddock scenarios where Sclerotinia is likely to be problematic and determine when preventative actions are necessary and profitable. Improve understanding of how cultural practices, (e.g. crop rotation, row spacing, plant density and sowing time) influence disease development and determine the effectiveness and optimal timing of fungicides for managing both canopy and basal Sclerotinia infection
West Coast Demersal Scalefish Resource recovery support package: 2023-24 report
No full textThe West Coast Demersal Scalefish Resource (WCDSR) includes over 100 species in inshore (20–250 m deep) and offshore ( \u3e 250 m) demersal habitats of the West Coast Bioregion. These species are caught by charter, commercial and recreational fishers.
The WCDSR is in recovery and managed under a 20-year recovery plan (2010–2030). DPIRD tracks recovery progress through scientific stock assessments of the indicator species (snapper, WA dhufish, and baldchin groper) every 3 years.
The 2021 WCDSR stock assessment showed limited recovery and additional management action was required.
In December 2022, the Minister for Fisheries announced commercial and recreational (including charter) sector management packages and a $10 million recovery package to support recovery
State and transition models for mulga rangelands of Western Australia
No full textThis report details a collaborative project between the Western Australian Department of Primary Industries and Regional Development and CSIRO that focused on developing State and Transition Models (STMs) for mulga rangelands in Western Australia. The overarching aim of the project was to improve the common understanding of the characteristics and dynamics of mulga rangeland ecosystems and the expected impacts of management. Specifically, the project aimed to collate expert knowledge and monitoring information using a nationally consistent framework to develop quantitative and dynamic STMs. The geographic scope of the project covers the extensive mulga rangelands of Western Australia, particularly the Gascoyne and Murchison Interim Biogeographic Regionalisation for Australia (IBRA) regions, as well as parts of the Pilbara and Yalgoo IBRA regions. The study prioritised mulga woodlands and shrublands and chenopod shrublands for model development due to their pastoral importance and history of ecological modification
Western Australia’s marine heatwave update - 9th May 2025
No full textCategory 1 – Moderate marine heatwave (MHW) conditions continue for the Gascoyne and South Coast Bioregions. Marine heatwave conditions in the North Coast Bioregion have abated and the West Coast Bioregion remains warm but neither are categorised as experiencing MHW conditions
Field pea: crop management and production
No full textThe field pea agronomic package available to growers is one offering simplicity and reliability. Producing high yielding field pea crops is now limited more by seasonality and rainfall rather than technology and genetics. With new varieties and agronomy package field pea is a profitable break crop option