Alex Tidd
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View article: The Ocean System Pathways (OSPs): A New Scenario and Simulation Framework to Investigate the Future of the World Fisheries
The Ocean System Pathways (OSPs): A New Scenario and Simulation Framework to Investigate the Future of the World Fisheries Open
The Fisheries and Marine Ecosystems Model Intercomparison Project (FishMIP) has dedicated a decade to unraveling the future impacts of climate change on marine animal biomass. FishMIP is now preparing a new simulation protocol to assess th…
View article: Assessing the Time of Emergence of Marine Ecosystems From Global to Local Scales Using IPSL‐CM6A‐LR/APECOSM Climate‐To‐Fish Ensemble Simulations
Assessing the Time of Emergence of Marine Ecosystems From Global to Local Scales Using IPSL‐CM6A‐LR/APECOSM Climate‐To‐Fish Ensemble Simulations Open
Climate change is anticipated to considerably reduce global marine fish biomass, driving marine ecosystems into unprecedented states with no historical analogs. The Time of Emergence (ToE) marks the pivotal moment when climate conditions (…
View article: Overcapacity and dynamics of a tuna fleet facing catch limits and high efficiency: The case of the Indian Ocean tuna fishery
Overcapacity and dynamics of a tuna fleet facing catch limits and high efficiency: The case of the Indian Ocean tuna fishery Open
The Indian Ocean Tuna Commission (IOTC) expresses concern over the overfished state and susceptibility to the overfishing of yellowfin tuna (Thunnus albacares). Acknowledging the challenges of increased fishing effort in a profitable fishe…
View article: Macroeconomic impact of an international fishery regulation on a small island country
Macroeconomic impact of an international fishery regulation on a small island country Open
This paper examines the macroeconomic impact of regulating tuna fishing on a small island economy that relies heavily on tourism and fishing for its foreign exchange earnings. While there is scientific consensus to limit the use of driftin…
View article: Is <scp>FAD</scp> fishing an economic trap? Effects of seasonal closures and other management measures on a purse‐seine tuna fleet
Is <span>FAD</span> fishing an economic trap? Effects of seasonal closures and other management measures on a purse‐seine tuna fleet Open
The management of fish aggregating devices (FAD) creates heated debates in tuna fishery management organizations striving to reduce the number of deployed floating objects. Through several econometric models and a machine learning approach…
View article: Macroeconomic impact of an international fishery regulation on a small island country
Macroeconomic impact of an international fishery regulation on a small island country Open
This paper examines the macroeconomic impact of a tuna fishing regulation on a small island economy that relies heavily on tourism and fishing for foreign exchange earnings. While there is scientific consensus to limit the use of drifting …
View article: How technical change has boosted Fish Aggregation Device productivity in the Indian Ocean tuna fishery
How technical change has boosted Fish Aggregation Device productivity in the Indian Ocean tuna fishery Open
Excess harvesting power can threaten the long-term sustainability of fisheries. Indicators of excess harvesting power include input-output-based estimates of economic production efficiency. The increasing use of Fish Aggregating Devices (F…
View article: Estimating global artisanal fishing fleet responses in an era of rapid climate and economic change
Estimating global artisanal fishing fleet responses in an era of rapid climate and economic change Open
There is an urgent need to assess the extent to which the global fishing enterprise can be sustainable in the face of climate change. Artisanal fishing plays a crucial role in sustaining livelihoods and meeting food security demands in coa…
View article: Food security challenged by declining efficiencies of artisanal fishing fleets: A global country-level analysis
Food security challenged by declining efficiencies of artisanal fishing fleets: A global country-level analysis Open
Global capture fisheries are a vital global food provisioning to help end hunger and malnutrition. To ensure that global seafood supply sustainably supports a growing population, many initiatives within the UN Sustainable-Development-Goals…
View article: global catch data by species groups
global catch data by species groups Open
Global catch (tonnes) by year, country, sector (artisanal or industrial) and by species groups for data envelopment analysis. (DEA).From : Watson, R. A. Institute for Marine and Antarctic Studies, University of Tasmania https://doi.org/10.…
View article: Mapping nearly a century and a half of global marine fisheries: 1869 to 2015
Mapping nearly a century and a half of global marine fisheries: 1869 to 2015 Open
Understanding global fisheries patterns contributes significantly to their management. By combining harmonized unmapped data sources with maps from satellite tracking data, regional tuna management organisations, the ranges of fished taxa,…
View article: Thirty years of fleet dynamics modelling using discrete‐choice models: What have we learned?
Thirty years of fleet dynamics modelling using discrete‐choice models: What have we learned? Open
Anticipating fisher behaviour is necessary for successful fisheries management. Of the different concepts that have been developed to understand individual fisher behaviour, random utility models ( RUM s) have attracted considerable attent…
View article: Estimating productivity, technical and efficiency changes in the Western Pacific purse-seine fleets
Estimating productivity, technical and efficiency changes in the Western Pacific purse-seine fleets Open
The purse-seine tuna fleet in the Western Pacific Ocean has undergone an accelerated expansion since the 1980s. The fishery is primarily managed using fishing effort limits. Constraining effort to ensure the biological health of the stock,…
View article: Preliminary capacity utilization analysis of the WCPO purse seine fleet using Data Envelopment Analysis (DEA)
Preliminary capacity utilization analysis of the WCPO purse seine fleet using Data Envelopment Analysis (DEA) Open
WCPFC has noted concern over the size of WCPO fleets relative to available fishingopportunities. An example process to identify excess-capacity was presented to SC11. In thispaper a more sophisticated analysis is performed to identify rela…
View article: Examining indicators of effort creep in the WCPO purse seine fishery
Examining indicators of effort creep in the WCPO purse seine fishery Open
Effort creep has implications for maintaining stocks around target reference points, and can affect vesselprofits. A better understanding of effort creep, and identification of both indicators that reflect it andmechanisms through which ma…