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Squid are short lived, with highly labile populations that respond rapidly to changes in environmental conditions. This makes them a good model for studying the response of recruitment processes to environmental signals. This study examines the influence of the Southern Oscillation Index (SOI) and Trans Polar Index (TPI) on the environment and abundance of six species of commercially important squid from the southern hemisphere, all linked to major current systems connected by the Antarctic Circumpolar Current: Dosidicus gigas (Southeast Pacific), Loligo vulgaris reynaudii (Southeast Atlantic), Nototodarus sloanii, N. gouldi (Southwest Pacific), Illex argentinus and L. gahi (Southwest Atlantic). All fisheries displayed a high level of inter‐annual variability and a degree of synchronicity was seen to occur in the abundance of the three Pacific species. The SOI signal was reflected in the environment of each fishery, particularly in Pacific regions. Both indices are correlated with squid abundance, particularly during the early life history stages (SOI) and adult stages (TPI), suggesting some degree of latitudinal separation, with juveniles potentially influenced by environmental variability at lower latitudes and adults at higher latitudes. 相似文献
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外文期刊是高校科研活动中重要信息来源,本文着重介绍了利用清华同方TPI系统对馆藏纸本外文期刊数字化建立数据库的实践,并提出建立TPI数据库与OPAC的链接的方法. 相似文献
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Understanding the linkages between structure and processes in soil landscapes involves analyses across several spatial and temporal scales. The transfer of information between scales requires the (1) identification of respective scale levels and (2) procedures for regionalization. Here, we present a multiparameter delineation of landform units and their attribution with typical Reference Soil Groups (RSG) of a landscape of NE Germany which is representative of young moraine regions. Data sources are a digital elevation model (DEM, 5 m × 5 m), a reference data set from sections of an intensively augered landscape, and expert knowledge. A conceptual digital soil map was constructed in the scale 1:5000 based on the Topographic Position Index (TPI). The methodology is applicable for multiscale analyses. Results are (1) the landform unit classified by digital terrain analysis of a DEM, (2) the attribution of RSG, and (3) the evaluation of the classification. Accuracy of the method was 57% overall, with 70% accuracy on typical erosional sites. The developed method allows identification of terrain‐related soil pattern with high spatial resolution in glacial‐drift areas. The high resolution of soil information can be used for delineation of management zones in precision farming, or as input for process studies and models requiring a translation of typological soil information into relevant soil properties (e.g., by pedotransfer functions). 相似文献
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贾第虫是一种人兽共患性寄生原虫,可在全世界范围内传播,并且有人—人,人—动物,以及动物特异性的传播循环,且其流行率与地理环境以及不同的区域有关。采用分子生物学分析方法,确定长春地区的宠物犬患有贾第虫的患病率以及基因型来评估犬贾第虫向人传播的危险。调查结果显示:宠物犬的贾第虫流行率为10.46%(25/239)。通过磷酸丙糖异构酶(TPI)基因的多态性对所分离虫株的基因型进行鉴定,结果显示所有贾第虫的基因型均为犬特异性的C型,未发现人兽共患的A型和B型。基因亚型结果显示在所有的样本中以CⅠ为主要亚型,占全部样本的76.00%(19/25)。此结果显示出贾第虫由犬传播给人的风险很低,这与以往来自中国南方的调查结果明显不同。 相似文献
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《丹顶鹤特色数据库》建设与TPI技术的应用 总被引：3，自引：0，他引：3
赵崇岩 《农业图书情报学刊》2007,19(2):5-6,24
介绍了TPI系统软件各种工具的作用，并结合建立丹顶鹤特色数据库的过程具体阐述了各种工具的使用方法，论述了建立丹顶鹤特色数据库的策略。 相似文献
6.
李昕 《山东省农业管理干部学院学报》2009,25(2):173-174
数字化时代的图书馆,把建设特色数据库作为迎接时代挑战的主要措施之一。特色数据库建立的目的是为了充分发挥图书馆特色化信息资源的功能,为教学科研服务,最大限度地满足用户的信息需求。特色数据库的建立可以树立图书馆的品牌地位,以增强图书馆在信息社会中的竞争能力,是图书馆在信息化社会中的立足之本。 相似文献
7.
利用现代信息技术构造昆虫学查询系统 总被引：1，自引：0，他引：1
针对昆虫学知识在农业发展中的重要地位，分析了昆虫学查询系统的优越性。并结合实际，论述了怎样利用现代化信息技术——TPI将昆虫学的基础知识、对农作物的危害，以及防治措施构建成昆虫学查询系统上传到Internet，实现网络资源共享。 相似文献
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TPI保障下的高校数字化图书馆建设 总被引：5，自引：0，他引：5
结合我馆利用TPI系统进行数字化图书馆资源建设的实践，介绍了利用TPI系统进行高校数字化图书馆资源建设的步骤．提出了高校数字化图书馆资源建设的注意事项。 相似文献
9.
黑龙江省西部地区文化传承数据库,是齐齐哈尔大学图书馆利用资源优势自建的特色数据库。该库对当地少数民族文化的传承,地方科教、文化、旅游行业的发展以及区域经济的建设等方面具有十分重要的意义。本论文阐述了该数据库的建库背景,重点探讨了如何利用TPIV6.0进行特色库设计以及建库的流程和方法等。 相似文献
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