A study of first-feeding herring (Clupea harengus L.) larvae during the period 1985-1993     

Fossum  Petter 《ICES Journal of Marine Science》1996,53(1):51-59

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Regional variation in maturation of sandeels in the North Sea   总被引：1，自引：0，他引：1  

Boulcott  Philip; Wright  Peter J.; Gibb  Fiona M.; Jensen  Henrik; Gibb  Iain M. 《ICES Journal of Marine Science》2007,64(2):369-376

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Benthic Metabolism and Standing Stock in the Central and Northern Deep Red Sea     

H. Thiel    O. Pfannkuche    R. Theeg  G. Schriever 《Marine Ecology》1987,8(1):1-20

Abstract. Benthic metabolism and standing stocks were investigated in the deep Red Sea between 21^o and 27^oN, Activity was assessed by the determination of respiration rates with a shipboard method and by calculating oxygen consumption from the activity in the electron transport system. We attempted to compare results from different latitudes within the warm Red Sea and with data from cold Atlantic environments. Our investigations were part of an environmental risk assessment to evaluate future mining of metalliferous sediments from the Atlantis II Deep.  相似文献   

Stock identification of Mediterranean horse mackerel (Trachurus mediterraneus) using morphometric and meristic characters   总被引：1，自引：0，他引：1  

Turan  Cemal 《ICES Journal of Marine Science》2004,61(5):774-781

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Geographic variation of golden redfish (Sebastes marinus) and deep-sea redfish (S. mentella) in the North Atlantic based on otolith shape analysis   总被引：1，自引：0，他引：1  

Stransky  Christoph 《ICES Journal of Marine Science》2005,62(8):1691-1698

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Tackling social exclusion in European neighbourhoods: experiences and lessons from the NEHOM project     

Anneli Kährik 《GeoJournal》2006,67(1):9-25

Disadvantaged urban neighbourhoods with their complex social, economic and physical situations have increasingly become the focus of governmental policies in the EU. The emphasis has shifted from improving physical qualities to building opportunities for social groups in these areas. While physical upgrade is easier to achieve, at least in the short run, initiatives often fail in outcomes on communities and local participation. This paper aims to improve understanding on how to tackle area-based social exclusion and create socially coherent communities. Building on the results of the NEHOM project, the focus is on examining how various interventions have impacted local communities and their opportunities for better inclusion. A comparison between neighbourhoods shows that mixing social groups to a certain degree is likely to be a necessary step towards opening long-term opportunities for a disadvantaged neighbourhood. The planned initiatives should at the same time directly benefit local communities, and the involvement of local groups in the planning and implementation process helps to guarantee that the overall changes are accepted by the local community. However, the proposed guidelines do not provide a universal recipe for a successful renewal suiting each neighbourhood—the contextual matters should always be a starting point when planning an initiative.  相似文献   

Potential of High-Resolution Satellite Data in the Context of Vulnerability of Buildings   总被引：1，自引：2，他引：1  

Marina Mueller  Karl Segl  Uta Heiden  Hermann Kaufmann 《Natural Hazards》2006,38(1-2):247-258

High-resolution space-borne remote sensing data are investigated for their potential to extract relevant parameters for a vulnerability analysis of buildings in European countries. For an evaluation of large earthquake scenarios, the number of parameters in models for vulnerability is reduced to a minimum of relevant information such as the type of building (age, material, number of storeys) and the geological and spatial context. Building-related parameters can be derived from remote sensing data either directly (e.g. height) or indirectly based on the recognition of the urban structure type in which the buildings are located. With the potential of a fully- or semi-automatic inventory of the buildings and their parameters, high-resolution satellite data and techniques for their processing are a useful supporting tool for the assessment of vulnerability.  相似文献   

Discourse,representation and urban planning: How a critical approach to discourse helps reveal the spatial re-ordering of street sex work1     

Kate Kerkin 《The Australian geographer》2004,35(2):185-192

This paper shows how a critical approach to discourse sheds light on processes of spatial re-orderings. It uses a case study of urban planning in an area of street sex work to explore the ways in which various representations of prostitution can be used to inform planning decisions. Representations of sex worker identity also expose complex spatial and social geographies and evolving processes of marginalisation and exclusion.  相似文献   

福建长乐西施舌资源现状及保护成效研究          下载免费PDF全文

林建杰 《应用海洋学学报》2020,39(4):551-558

2018年4月在“福建省长乐海蚌资源增殖保护区”及其邻近海域布设31个站位进行底拖网调查取样,共鉴定渔获物45种,其中甲壳类21种、贝类14种、鱼类10种。西施舌（Mactra antiquata）的站位出现率为38.71%。站位的质量密度平均为975.68 kg/km²（0～23 384.53 kg/km²）,个数密度平均为2.983×10⁴个/km²（0～59.607×10⁴个/km²）。西施舌种群在渔获物中的IRI值高达 1 556.5 \[仅次于截形白樱蛤(Psammacoma gubernaculum)],为优势种,表明西施舌在保护区生物资源组成中占有重要的地位;保护区内西施舌的站位出现率及质量密度明显高于区外,表明西施舌资源主要集中分布于保护区范围内;西施舌种群的年龄组分布较广,年龄结构较为合理。大部分西施舌均达到性成熟年龄和大小,表明资源具有可持续发展的潜力。与2006年和2012年的调查结果相比,保护区2018年西施舌资源比2012年有显著提高,分布范围亦有明显扩大,但尚未恢复到2006年的总体水平。综上可以看出,西施舌资源保护区范围总体界定合理,西施舌资源保护显见成效;“福建省长乐海蚌资源增殖保护区”范围内不同区块实行不同程度的禁捕、限捕管控,2011年以来累计放流西施舌种苗253.07万粒,对于西施舌资源恢复和养护管理是有效的举措。  相似文献   

Impact of Grazing Exclusion on the Surface Heat Balance in North Tibet     

FENG Yunfei  DI Yingwei  ZHANG Jing  ZHANG Xianzhou  SHI Peili  Niu Ben 《资源与生态学报(英文版)》2020,11(3):283-289

The grazing exclusion program used by the Tibetan government to protect the ecological environment has changed the vegetation and impacted the surface heat balance in North Tibet. However, little information is available to describe the in?uences of the current grazing exclusion program on local surface heat balance. This study uses the records of fenced grassland patch locations to identify the impact of grazing exclusion on surface heat balance in North Tibet. The records of fenced grassland patch locations, including the longitude, latitude, and elevation of the vertices of each fenced patch (polygon shapes), were provided by the agriculture and animal husbandry bureaus of the counties where the patches were located. ArcGIS 10.2 was used to create polygon shapes based on patch location records. Based on satellite data and the surface heat balance system determined by the model, values for changes in land surface temperature (LST), albedo and evapotranspiration (ET) induced by grazing exclusion were obtained. All of these can influence surface heat balance and alter the fluctuation of LST in the northern Tibetan Plateau. The LST trends for day and night showed an asymmetric diurnal variation, with a larger magnitude of warming in the day than cooling at night. The maximum decrease in absorbed shortwave of LST (-0.5 - -0.4 ℃ per decade) occurred in the central region, while the minimum decrease (-0.2 - -0.1 ℃ per decade) occurred in the eastern region. The decreased latent heat lead to the LST increased maximum (>1 ℃ per decade) occurred in the central region, The eastern region increased at a rate of 0.2-0.5 ℃ per decade, while the minimum increase (0-0.1 ℃ per decade) occurred in the northwestern region.  相似文献