AgMaps: A Partnership Between Cornell University's Mann Library,New York County Extension Offices and the National Agricultural Statistics Service of the USDA

ABSTRACT

AgMaps is a system that allows Mann Library to distribute customized numeric data sets and thematic maps over the Web. To further the efforts of the AgMaps project, Mann Library is actively engaging in intellectual and financial collaboration with three New York County Extension offices, Cornell Cooperative Extension, Cornell faculty, and the National Agricultural Statistical Service of the USDA. After a brief discussion of the need for GIS and AgMaps in particular, this paper focuses on the roles each agency played in the process of creating AgMaps, describes the partnerships, highlights a user study employed for the interface design and presents AgMaps and some of its features.     

A survey of antipredator controls at marine salmon farms in Scotland

A questionnaire survey was sent to managers of marine salmon farm sites in Scotland to update knowledge on problems from predators and the use of antipredator controls. Of the 195 respondents, 5 had no antipredator controls with the remaining 190 having some level of control. Throughout Scotland, managers reported 12 species of predator. Seals were reported to be predators at 81% of sites. In total, 19 different types of antipredator control were used. Top nets were employed most widely, being used by 88% of the 195 respondents followed by seal scarers (52%) and shooting (49%). Shooting was considered to be very effective by 45 (62%) of the 73 site managers who expressed an opinion on its effectiveness. Views on the effectiveness of seal scarers varied markedly among site managers, and only 21 (23%) of 92 managers considered them to be very effective. There was also considerable variation in the perceived effectiveness of different types of antipredator nets. Comparison with previous studies showed that although there was a significant increase in the proportion of farms at which seals were reported to have caused loss or damage between 1985 and 1987, there has been no further increase. There were no significant changes over time in reported problems from other species of predator. The proportions of farms using nets and shooting to deter predators are remarkably consistent between the study periods. However, the use of seal scarers has increased significantly from 10% in 1985 to 52% in 2001. The survey suggests that the degrees of protection afforded by predator control methods vary appreciably between sites. There is a need for a range of antipredator devices to be tested under controlled conditions to determine under which circumstances each is most effective. This is particularly the case regarding seal scarers.     

淮南市国控环境空气监测点位设置技术研究

对设置环境空气监测点位的目的及意义、设置依据、设置原则及环境功能区划进行了论述,明确了具体点位设置,为淮南市环境安全监测工作的展开提供参考。     

Measures aimed at controlling the invasion of Simulium damnosum Theobald s.l. (Diptera: Simuliidae) into the Onchocerciasis Control Programme Area. III. Searches in the Upper Niger Basin of Guinea for additional sources of flies invading south‐eastern Mali

Abstract

Very large breeding sites of the onchocerciasis vector, Simulium sirbanum were discovered along the Rivers Niger, Mafou, Kouya, Niandan and Milo in the Upper Niger Basin of Guinea. Flies reared from these breeding sites and caught biting man nearby were found to be in the same size range as those collected in the south‐eastern Mali invasion zone of the Onchocerciasis Control Programme Area. The periodicity of the Mali invasion appeared to be related to the hydrological conditions in the Upper Niger Basin during the early monsoon. During this period, rising water levels greatly increase vector breeding in the principal rapids of the Niger and its tributaries which lie upwind and to the south‐west of the invasion sites in south‐eastern Mali. The Mali invasion ceases towards the height of the rainy season when many of these rapids are flooded. It was concluded that the very large breeding sites associated with the principal rapids in the Upper Niger Basin were the main sources of the S. sirbanum invading south‐eastern Mali.     

民族地区茶文化开发研究

茶文化旅游是近年来贵州省民族地区旅游发展的重要组成部分,为其旅游发展带来了新的契机。贵州南部民族地区旅游景观多样,民族文化底蕴丰富,具有发展茶文化旅游的优势。在 “旅游+”和“文化+” 背景下,基于荔波茶文化和旅游资源发展现状,从休闲度假和文化体验等角度出发探索其茶文化旅游资源开发模式,对提升荔波乃至黔南州的茶产业战略地位、旅游文化层次、社会经济水平具有重要的理论意义和实践意义。     

不同产区野生花楸果实和种子的表型多样性

以东北地区6个野生花楸种源的新采收果实和种子为材料,研究了天然花楸果实和种子表型变异情况,结果表明:花楸果实和种子具有极丰富的表型变异,种源内的分化高于种源间;果长、果径、种长及种宽是果实和种子的关键表型性状;种子表型变异在空间分布上呈现以纬度为主的单向变异模式.     

基于协同过滤的旅游景点推荐

针对在线旅游快速增长的态势,本文研究基于协同过滤的旅游景点推荐算法。通过提取在线旅游网站上游客对桂林旅游景点的评价数据,使用协同过滤算法进行旅游景点推荐。实验结果表明：协同过滤算法完全可用于旅游景点推荐。     

辽宁省PRRSVLN／0901株ORF5基因遗传变异分析及其抗原位点预测

根据已发表的PRRSVORF5基因序列设计引物,经RT-PCR对辽宁省PRRSVLN／0901株0RF5基因片段进行扩增、克隆及测序,结果得到长度为739bp的0RF5基因完整序列,与已知代表毒株进行核苷酸及其编码氨基酸同源性比对和系统进化树分析,LN／09010RF5基因序列与VR-2332株同源性达到88．6％,而与LV株,则相差甚远,仅为61．7％,表明PRRSVLN／0901病毒株为美洲型,与CBB-1-F3T、GD2007、JXA1、BJ0708等毒株同源性高达98．7％～99．5％,表明该病毒与2006年以来国内的多数流行变异株遗传关系相近。通过对PRRSVI,N／0901ORF5进行氨基酸疏水性及其编码蛋白跨膜区预测分析,表明该毒株ORF5具有多个抗原优势位点,与国内其他毒株既有共同位点又有区别位点,可以做为辽宁地区开发研制PRRS基因工程疫苗的重要蛋白基因。     

我国农业网站运营中的问题及其对策

农业网站是加快农业信息传递和传播的重要载体,针对当前我国农业网站发展的基本现状,分析了农业网站发展中服务定位不清晰、运营效率不高、盈利模式不明确等发展＂瓶颈＂问题,指出农业网站的发展壮大需要通过从明晰网站定位、分离网站所有权与经营权和创新网站盈利模式上来解决,对农业网站形成合理的运营机制,更好地服务＂三农＂,具有重要的借鉴和指导意义。     

Sequence tagged site markers linked to the sbm1 gene for resistance to pea seedborne mosaic virus in pea

Resistance to pea seed‐borne mosaic virus (PSbMV) pathotype P‐1 in peas is conferred by sbm1 with recessive inheritance. PSbMV is an economically important pathogen with world‐wide distribution that causes significant losses in pea yield and reduces seed and produce quality. The sbm1 gene was previously mapped to linkage group VI on molecular linkage maps of the pea genome. To improve plant breeders’ ability to develop varieties resistant to PSbMV, two random amplified polymorphic DNA markers (G05_2537 and L01_910) and one restriction fragment length polymorphism (P446) linked to sbm1 have been identified. The genomic sequences for these markers have been characterized and the information used to develop three simple polymerase chain reaction‐based STS (sequence tagged site) assays. Linkage analysis in two F₂ populations showed that the most tightly linked of these three STS loci (sG05_2537) is approximately 4 cM from sbm1. Characterization of a collection of resistant and susceptible germplasm demonstrated a strong correlation between STS alleles and sbm1 alleles, indicating the utility of these markers for marker‐assisted selection in breeding programmes using a range of germplasm sources.