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PSB2020-08 Desktop update of estimation of seabird cryptic mortality in trawls, via warp and net captures in the NZ domestic fleet using standard mitigation

Details

RFx ID : 23583417
Tender Name : PSB2020-08 Desktop update of estimation of seabird cryptic mortality in trawls, via warp and net captures in the NZ domestic fleet using standard mitigation
Reference # : O - PSB2020-08
Open Date : Monday, 9 November 2020 12:00 PM (Pacific/Auckland UTC+13:00)
Close Date  : Friday, 29 January 2021 2:00 PM (Pacific/Auckland UTC+13:00)
Tender Type : Request for Proposals (RFP)
Tender Coverage : Sole Agency  [?]
Categories :
  • 70000000 - Farming and Fishing and Forestry and Wildlife Contracting Services
Regions:
  • New Zealand
Exemption Reason : None
Required Pre-qualifications : None
Contact : Rachel Pollock
Alternate Physical Delivery Address  :
Alternate Physical Fax Number  :
Overview

Overall Objective:
To summarise and integrate existing data to estimate cryptic mortality of seabirds in trawls using standard mitigation estimates should explicitly contain uncertainty, and be specific to the capture method and fishery groups identified under project PRO2019-10.
Specific Objectives:
1. Summarise existing data to assign priors for various parameters within a simple transition matrix model to estimate cryptic mortality of seabirds in trawls using standard mitigation, including rates of: live release survival; death by drowning in the net; death by warp strike; as well as rates of body retention vs. body non-retention in the net.
2. Construct a simple Bayesian model combining the parameter estimates from Objective 1, and fit to available data (e.g., pre- vs. post-tori line warp strike rates; results of autopsies; injury reporting codes; capture method) to estimate cryptic mortality