Comparison between zooplankton data collected by the Continuous Plankton Recorder survey in the English Channel and by WP-2 nets at station L4, Plymouth (UK)

Zooplankton sampling has been carried out by the Continuous Plankton Recorder (CPR) survey since the 1930s enabling the study of long-term changes in plankton populations, the elucidation of seasonal patterns of abundance, and more recently providing zooplankton biomass estimates for ecosystem models. Data for zooplankton abundance collected by CPR tows in the Western English Channel (between 1988 and 1998) were compared to vertically integrated samples collected from station L4 off Plymouth, UK. Comparisons were made for locally abundant copepods (including Acartia, Calanus, Para/Pseudocalanus, Centropages, Oithona and Temora) collected by CPR and WP-2 nets. All dominant species recorded at L4 were also common to the CPR data. However, the position of the taxa in the two datasets was not equivalent. Seasonal cycles revealed by CPR data were significantly similar to those recorded throughout the water column at L4 for most taxa. However, absolute levels of abundance differed for the two datasets: abundances were underestimated by CPR samples when compared to those of vertically integrated samples by a factor of between 2 and 35, with the exception of Centropages. The differing mesh sizes (200 and 270 μm) of the WP-2 net and CPR mesh could only partially explain these differences in abundance, implying that the behaviour of individual taxa and their depth in the water column also influenced the abundance recorded.     

科技论文英文部分的书写规范化探讨

为方便与国际交流，许多科技期刊都要求论文的题名、摘要、关键词等翻译成英文。本文对科技论文英文部分的规范化进行了一些探讨。     

《地质学报》(英文版)再上新台阶

正在中国科协和财政部科技期刊国际影响力提升计划的大力支持下,在第39届编委会和编辑部的共同努力下,《地质学报》英文版学术水平、国际读者群、国际影响力连年提高。现被国内外20多家数据库和网站收录,在Wiley-     

无人船现状及发展趋势综述

无人船是海洋技术发展的产物,作为一种新型技术手段目前已在海洋调测和防务领域广泛应用.本文从无人船系统的组成、应用领域和发展现状出发,归纳总结无人船的关键技术,并研究其发展趋势.作为一种水面机动载体,无人船关键技术包括特型平台设计技术、运动控制技术和通信技术3个方面,其核心是围绕任务内容、载荷原理、使用环境特点,以应用设计、功能开发为主体的系统集成和应用.现阶段无人船主要作为传统海上工作方法的补充,在遵守、参照现有各种法规、技术标准要求的前提下,搭载已成型的船用任务载荷,按照载人船舶的作业模式、施工惯例投入各种应用.未来随着材料技术、人工智能、通信技术的发展,以及相关政策、法规的建立、健全,无人船将逐步成为一种独立的技术手段,形成一系列新的作业模式和技术方法.     

Sourcing Thai geography literature for ASEAN and international education

This study surveys the available English-language literature and learning resources covering the field of Thai geography, and provides historical review of Thai geography education and an inventory of relevant, accessible materials for ASEAN and international undergraduate students, educators and researchers. We note that the discipline and context of Thai geography has shifted toward new technologies, particularly geographic information systems, and this has left a void in practical and accessible text for high school and undergraduate students in gaining broad and traditional knowledge of the field. Our study finds that the accessibility of introductory English-language texts on Thai geography is limited, and that existing texts appear mainly in the grey literature or widely dispersed across various disciplines of study. The paper provides a platform to help future researchers and to facilitate future production of English-language textbooks and other study materials in the field of Thai geography.     

基于GIS的宁波市海洋专题保障预报综合信息服务平台开发与应用

利用GIS地理信息系统、网络数据库等技术,设计开发一个集港口码头潮汐潮流精细化预报、海上搜救辅助决策、海上溢油及化学品漂移扩散辅助决策、海洋环境预警预报等功能于一体的宁波市海洋专题保障预报综合信息服务平台,为宁波涉海涉渔部门提供精准直观、灵活多样的各项专题海洋预报产品,更好地服务宁波市海洋经济的发展,提升地方政府海上突发事件应急能力。     

世界主要海洋强国综合实力测评研究

文章在回顾世界海洋强国发展历程和分析现阶段发展特点的基础上,构建国家层面的海洋综合实力评价指标体系,并结合层次分析法和加权积决策理论建立了综合实力测评模型。通过选取世界上8个有代表意义的海洋强国,结合其海洋综合实力的现状分析,利用测评模型对其进行测评排序,为我国"海洋强国"战略的科学规划提供参考。     

Inter-season and interannual variations in fish and macrocrustacean community structure on a eastern English Channel sandy beach: Influence of environmental factors

The intertidal zone of an exposed sandy beach on the French coast of the English Channel was sampled with a 1.5 m beam-trawl over five years (2000 and 2003–2006) at weekly intervals. The fish and macrocrustacean catches were analysed to determine the inter-season and interannual variation in community structure and relate these variations to changes in the major environmental variables. Only six species (plaice Pleuronectes platessa, common goby Pomatoschistus microps, sprat Sprattus sprattus, sand eel Ammodytes tobianus, brown shrimp Crangon crangon and shore crab Carcinus maenas) from the 27 species captured can be considered as dominant species of the intertidal zone, and they accounted for >90% of total numbers. Most individuals caught were young-of-the-year or juvenile. Analysis of similarities (ANOSIM) and similarities percentage (SIMPER) indicated that inter-season variability of community structure (mean average similarity = 47%) was more pronounced than interannual variability (mean average similarity = 65%). Canonical correspondence analysis (CCA) indicates that a substantial component (32.2%) of the measured inter-season variation in community structure can be explained by environmental factors (mainly water temperature). The main inter-season changes in the abundance and community structure were due to the variation of the six key species and reflect the different times of their recruitment. During the five years of the study, the structure of the fish and macrocrustacean spring community persisted from year to year, with the dominant species reappearing consistently even though their abundances fluctuated from year to year. This interannual variation probably reflects variable recruitment success influenced by physico-chemical conditions. In spite of the considerable interannual variation (40 times) in the spring bloom of the prymnesiophyte alga Phaeocystis globosa we found no effect of this bloom on either fish and macrocrustacean species densities or diversity index.