Related items
Showing items related by metadata.
-
DocumentOther document
-
MeetingMeeting documentAn updated overview of the swordfish catches by the Portuguese pelagic longline fishery in the Indian Ocean between 1998-2012: catch, effort, CPUE and catch-at-size 2013
Also available in:
No results found.The Portuguese longline fishery targeting swordfish in the Indian Ocean started in the late 1990’s, targeting mainly swordfish. A recent effort by Portuguese Marine and Atmosphere Institute (IPMA) has been made aiming the collection of historical catch data on this fishery since the late 1990’s to the present date. This working document reports an updated overview of the Portuguese swordfish fishery, including alyses on the catches, effort, catch-at-size and CPUE trends for the period 1998-2012. The trends in the swordfish catch-at-size were alyzed annually, and compared between months and regions of operation of the fishery. Nomil annual CPUEs were calculated as kg/1000 hooks, and were standardized with Generalized Linear Models (GLMs) using year, quarter, location and swordfish/blue shark ratio as explatory variables. Three different modeling approaches were used and compared, including tweedie, gamma and lognormal models, and model validation was carried out with a residual alysis. A sensitivity alysis to the influence of the ratio factor in the models was carried out. The results presented in this paper update a previous alysis on the trends of swordfish catches available from the Portuguese longline fishery operating in the Indian Ocean. -
MeetingMeeting documentA brief overview of the swordfish catches by the Portuguese pelagic longline fishery in the Indian Ocean: catch, effort, CPUE and catch-at-size 2013
Also available in:
No results found.
Users also downloaded
Showing related downloaded files
-
Book (stand-alone)General interest bookHarmonized World Soil Database version 2.0 2023
Also available in:
No results found.The Harmonized World Soil Database version 2.0 (HWSD v2.0) is a unique global soil inventory providing information on the morphological, chemical and physical properties of soils at approximately 1 km resolution. Its main objective is to be useful for modelers and to serve as a basis for prospective studies on agroecological zoning, food security and the impacts of climate change. HWSD v2.0 also serves an educational function, illustrating the geographical distribution of soils as well as their properties globally. HWSD v2.0 is easily accessible and user-friendly. -
Book (stand-alone)Technical bookGlobal Forest Resources Assessment 2020
Main report
2020FAO completed its first assessment of the world’s forest resources in 1948. At that time, its major objective was to collect information on available timber supply to satisfy post-war reconstruction demand. Since then, the Global Forest Resources Assessment (FRA) has evolved into a comprehensive evaluation of forest resources and their condition, management and uses, covering all the thematic elements of sustainable forest management. This, the latest of these assessments, examines the status of, and trends in, forest resources over the period 1990–2020, drawing on the efforts of hundreds of experts worldwide. The production of FRA 2020 also involved collaboration among many partner organizations, thereby reducing the reporting burden on countries, increasing synergies among reporting processes, and improving data consistency. The results of FRA 2020 are available in several formats, including this report and an online database containing the original inputs of countries and territories as well as desk studies and regional and global analyses prepared by FAO. I invite you to use these materials to support our common journey towards a more sustainable future with forests. -
Book (series)GuidelineDéveloppement de l’aquaculture. 4. Une approche écosystémique de l’aquaculture. 2011Les dimensions sociales et biophysiques des écosystèmes sont inextricablement liées de telle manière qu’un changement dans une seule dimension est très susceptible de générer un changement dans une autre. Bien que le changement est une conséquence naturelle des interactions complexes, il doit être surveillé et même géré si le taux et la direction du changement risquent de compromettre la résilience du système. “Une approche écosystémique de l’aquaculture (AEA) est une stratégie pou r l’intégration de l’activité dans l’écosystème élargi de telle sorte qu’elle favorise le développement durable, l’équité et la résilience de l’interconnexion des systèmes socio-écologiques.” Etant une stratégie, l’approche écosystémique de l’aquaculture (AEA) n’est pas ce qu’on a fait, mais plutôt comment on l’a fait. La participation des parties intéressées est à la base de la stratégie. L’AEA exige un cadre politique approprié dans lequel la stratégie se développe en plusieurs é tapes: (i) la portée et la définition des limites des écosystèmes et l’identification de la partie intéressée; (ii) l’identification des problèmes principaux; (iii) la hiérarchisation des problèmes; (iv) la définition des objectifs opérationnels; (v) l’élaboration d’un plan de mise en oeuvre; (vi) le processus de mise en oeuvre correspondant qui comprend le renforcement, le suivi et l’évaluation, et (vii) un critique des politiques à long terme. Toutes ces étapes sont informées par les meilleures connaissances disponibles. La mise en oeuvre de l’AEA exigera le renforcement des institutions et des systèmes de gestion associés de sorte qu’une approche intégrée du développement de l’aquaculture peut être mise en oeuvre et compte entièrement des besoins et des impacts d’autres secteurs. La clé sera de développer des institutions capables d’intégration, notamment en fonction des objectifs et des normes convenus. L’adoption généralisée d’une AEA exigera un couplag e plus étroit de la science, la politique et la gestion. Elle exige aussi que les gouvernements incluent l’AEA dans leurs politiques de développement de l’aquaculture, stratégies et plans de développement.