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MeetingMeeting documentThe Philippine Tuna Fishery and Aspects of the Population Dynamics of Tunas in the Philippine waters 2010
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MeetingMeeting documentBillfish: an important part of the pelagic gillnet fisheries of Pakistan 2013
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No results found.Billfish is a group of marine fishes belonging to families Istiophoridae and Xiphidae mainly found in the offshore waters. These large sized fishes support substantially large and important commercial and recreatiol fisheries in many parts of the world. In Pakistan, there is no aimed fishery for billfishes and these are landed as components of the catch of pelagic gillnet fisheries. There are other gillnet fisheries in Pakistan which are mainly based in coastal areas. Some of these are species s pecific like monofilament gillnet fishery for Indian mackerel and bottom set gillnet fisheries for stingrays etc. Historically billfishes used to be exported to Sri Lanka in salted-dried form fetching higher prices than all other salted products. However, from the last decade, almost entire catches of billfish are traded in chilled form with Iran. Billfishes are not well studied in Pakistan.With the exception of Osmanyet al. (2009) and Rashid (1966) no work on the billfish was dedicatedly carrie d out. Rashid (1966) described species of family Istiophoridae from Pakistan whereas Osmanyet al. (2009) described abundance and distribution of billfishes from Pakistan. In addition, Moazzam and Usmani (2004) has published a map showing distribution of billfishes in the Arabian Sea along the coast of Pakistan. Present paper describes details of the billfish fisheries of Pakistan including fishing methods (boats and gears), fishing operations, species composition, commercial landings, dispositio n and marketing. The landing data presented in this paper obtained from Anonymous (2013) and pertains to two maritime provinces of Pakistan i.e. Sindh and Balochistan as well as some information from Exclusive Economic Zone of Pakistan. -
DocumentOther documentApplication of Generalized Linear Models and Generalized Estimation Equations to model at-haulback mortality of blue sharks captured in a pelagic longline fishery in the Atlantic Ocean 2013
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No results found.At-haulback mortality of blue shark (Prioce glauca) captured by the Portuguese pelagic longline fish- ery targeting swordfish in the Atlantic was modeled. Data was collected by onboard fishery observers that monitored 762 fishing sets (1 005 486 hooks) and recorded information on 26 383 blue sharks. The sample size distribution ranged from 40 to 305 cm fork length, with 13.3% of the specimens captured dead at-haulback. Data modeling was carried out with Generalized Linear Models (GLM) and Gener- alized Estimation Equations (GEE), given the fishery-dependent source of the data. The explatory variables influencing blue shark mortality rates were year, specimen size, fishing location, sex, season and branch line material. Model diagnostics and validation were performed with residual alysis, the Hosmer–Lemeshow test, a receiver operating characteristic (ROC) curve, and a 10-fold cross validation procedure. One important conclusion of this study was that blue shark sizes are important predi ctors for estimating at-haulback mortality rates, with the probabilities of dying at-haulback decreasing with increasing specimen sizes. The effect in terms of odds-ratios are non-linear, with the changing odds- ratios of surviving higher for the smaller sharks (as sharks grow in size) and then stabilizing as sharks reach larger sizes. The models presented in this study seem valid for predicting blue shark at-haulback mortality in this fishery, and can be used by fisheries magement organizations for assessing the efficacy of magement and conservation initiatives for the species in the future.
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Book (stand-alone)Manual / guide青少年生物多样性科普手册 2022
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《青年与联合国全球联盟学习和行动系列：青少年生物多样性科普手册》是为学校、青年团体和其他好奇的年轻学习者提供的教育资源。本手册从基因、物种和生态系统方面解释了生物多样性。它探索了海底、陆地、空中、河流和湖泊以及生产我们食物的农场的生物多样性。本手册考虑了为什么生物多样性很重要，人类如何影响生物多样性，以及我们必须做些什么来保护世界生物资源。在手册的最后，提供了一些鼓舞人心的青年人领导倡议的例子，并给出了容易遵循的动作计划来帮助你制定自己的生物多样性项目和保护活动。 -
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BookletCorporate general interestEmissions due to agriculture
Global, regional and country trends 2000–2018
2021Also available in:
No results found.The FAOSTAT emissions database is composed of several data domains covering the categories of the IPCC Agriculture, Forestry and Other Land Use (AFOLU) sector of the national GHG inventory. Energy use in agriculture is additionally included as relevant to emissions from agriculture as an economic production sector under the ISIC A statistical classification, though recognizing that, in terms of IPCC, they are instead part of the Energy sector of the national GHG inventory. FAO emissions estimates are available over the period 1961–2018 for agriculture production processes from crop and livestock activities. Land use emissions and removals are generally available only for the period 1990–2019. This analytical brief focuses on overall trends over the period 2000–2018.