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Bioeconomic Modelling of Seal Impacts on West of Scotland Fisheries
It has been several decades that groundfish stocks have decreased around the UK. Meanwhile, grey seal population has increased. This has created a controversy between fishers and conservationists as regards to the role grey seals have played in the stock depletion. Currently, opinions are still divided, and further studies need to be done to mitigate these conflicts.A bioeconomic model able to quantify the economic impact of grey seal predation on West of Scotland demersal fisheries for cod, haddock and whiting was developed. The biological part of the model accounts for seal predation and fishing catches and is linked to an economic model accounting for fleet revenues and costs.Three scenar...
The Effects of Noise on Aquatic Life
The Second International Conference on the Effects of Noise on Aquatic Life will take place in Ireland August 15-20, 2010. The main emphasis of the conference will be on defining the current state of knowledge. However, we will also assess progress in the three years since the First conference. The Second conference will place strong emphasis on recent research results, the sharing of ideas, discussion of experimental approaches, and analysis of regulatory issues.
Inter-Benchmark Protocol N North Sea Herring (IBPNSherring 2021)
A single-stock was included in this inter-benchmark: North Sea Autumn Spawning (NSAS) herring (her.27.3a47d). This inter-benchmark process was put forward because of: 1) newly available natural mortality values and 2) a discrepancy in the handling of natural mortality (M). For the NSAS assessment, natural mortality is provided every 3–4 years by WGSAM. This is often associated with a rescaling of the assessment. At WKPELA 2018, a profiling method was developed to handle the introduction of new natural mortalities and in turn, alleviate the potential rescaling of the assessment. The method consists of the testing of the fit of the assessment model for a range of additive rescaling (fixed ac...
Workshop on North Sea Stocks Management Strategy Evaluation (WKNSMSE)
WKNSMSE (Workshop on North Sea stocks Management Strategy Evaluation) took place over two physical meetings (19-21 November 2018 and 26-28 February 2019, but at ICES HQ, Copen-hagen) and several WebEx meetings, was chaired by José De Oliveira (UK) and included 30 par-ticipants from Denmark, Germany, Netherlands, Norway, Sweden, UK and the European Com-mission, and two reviewers from South African and New Zealand. The purpose of this work was to evaluate long-term management strategies for jointly-managed stocks in the North Sea (cod, haddock, whiting, saithe and autumn-spawning herring) between the European Union and Nor-way, following a request from EU-Norway. The first physical meeting pr...
Spatio-Temporal Models for Ecologists
Ecological dynamics are tremendously complicated and are studied at a variety of spatial and temporal scales. Ecologists often simplify analysis by describing changes in density of individuals across a landscape, and statistical methods are advancing rapidly for studying spatio-temporal dynamics. However, spatio-temporal statistics is often presented using a set of principles that may seem very distant from ecological theory or practice. This book seeks to introduce a minimal set of principles and numerical techniques for spatio-temporal statistics that can be used to implement a wide range of real-world ecological analyses regarding animal movement, population dynamics, community compositio...
FishBase 2000
An information system with key data on the biology of all fishes. Covers more than 25,000 species of fish.
Biosonar
Two groups of animals, bats and odontocetes (toothed whales), have independently developed the ability to orient and detect prey by biosonar (echolocation). This active mechanism of orientation allows these animals to operate under low light conditions. Biosonar is a conceptual overview of what is known about biosonar in bats and odontocetes. Chapters are written by bat and odontocetes experts, resulting in collaborations that not only examine data on both animals, but also compare and contrast mechanisms. This book provides a unique insight that will help improve our understanding of biosonar in both animal groups.
Risk Evaluation and Biological Reference Points for Fisheries Management
Papers presented: 1) Reference points for fisheries management: the western Canadian experience; 2) Reference points for fisheries management: the eastern Canadian experience; 3) Reference points for fisheries management: the ICES experience; 4) Spawning stock biomass per recruit in fisheries management: foundation and current use; 5) The development of a management procedure for the South African anchovy resource; 6) How much spawning per recruit is enough?; 7) The behaviour of Flow, Fmed and Fhigh in response to variation in parameters used for their estimation; 8) The Barents Sea capelin stock collapse: a lesson to learn; 9) Variance estimates for fisheries assessment: their importance an...
