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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。 -
Book (stand-alone)Flagship2015–16年农产品市场状况
贸易与粮食安全:更好地平衡国家重点与集体利益
2015全球农产品和粮食产品贸易已在最近几十年取得快速增长,各国作为出口或进口方越来越多地参与这一贸易进程。这种趋势预计将在今后几十年中持续。因此,贸易将在全球各区域对粮食安全的程度和性质产生越来越重要的影响。我们面临的挑战就是确保农产品贸易的扩大能对消除饥饿、粮食不安全和营养不良起到促进作用,而不是阻碍作用。 本版《农产品市场状况》旨在缓解目前各方在农产品贸易对粮食安全产生的影响以及如何管理农产品贸易以确保贸易开放度的增加能惠及所有国家等问题上出现的观点两极分化现象。本书通过就一系列话题举证和说明,努力促成各方就政策选择开展有实证依据的辩论,并在政策选择过程中努力实现必要的改进。 -
Book (stand-alone)Manual / guideThe Living Marine Resources of the Eastern Central Atlantic. Volume 2: Bivalves, gastropods, hagfishes, sharks, batoid fishes, and chimaeras 2016
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No results found.This multivolume field guide covers the species of interest to fisheries of the major marine resource groups exploited in the Eastern Central Atlantic. The area of coverage includes FAO fishing area 34 and part of 47. The marine resource groups included are bivalves, gastropods, chitons, cephalopods, stomatopods, shrimps, lobsters, crabs, hagfishes, sharks, batoid fishes, chimaeras, bony fishes and sea turtles. The introductory chapter outlines the environmental, ecological, and biogeographical factors influencing the marine biota, and the basic components of the fisheries in the Eastern Central Atlantic. Within the field guide, the sections on the re source groups are arranged phylogenetically according to higher taxonomic levels such as class, order, and family. Each resource group is introduced by general re marks on the group, an illustrated section on technical terms and measurements, and a key or guide to orders or families. Each family generally has an account summarizing family diagnostic characters, bi o logical and fisheries in formation, notes on similar families occur ring in the area, a key to species, a check list of species, and a short list of relevant literature. Families that are less important to fisheries include an abbreviated family ac count and no de tailed species in formation. Species in the important families are treated in detail (arranged alphabetically by genus and species) and include the species name, frequent synonyms and names of similar speci es, an illustration, FAO common name(s), diagnostic characters, biology and fisheries in formation, notes on geo graphical distribution, and a distribution map. For less important species, abbreviated accounts are used. Generally, this includes the species name, FAO common name(s), an illustration, a distribution map, and notes on biology, fisheries, and distribution. Each volume concludes with its own index of scientific and common names.