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208001
電子期刊
L. E. Vihermaa, and S. Waldron, and M. H. Garnett, and J. Newton
Knowing the rate at which carbon is cycled is crucial to understanding the dynamics of carbon transfer pathways. Recent technical developments now support measurement of the <sup>14</sup>C age of evaded CO<sub>2</sub> from fluvial systems, which provides an important "fingerprint" of the source of C. Here we report the first direct measurements of the <sup>14</sup>C age of effluxed CO<sub>2</sub> from two small streams and two rivers within the western Amazonian Basin. The rate of degassing and ...
關鍵字: aquatic
出版: Copernicus Publications
ISSN: 1726-4170
來源: DOAJ
System ID: 429144
208002
電子期刊
Luciano da Silva Souza, and Laercio Duarte Souza, and Arlicélio de Queiroz Paiva, and Anderson Clécio Vieira Rodrigues, and Luciano da Silva Ribeiro
O aprofundamento do sistema radicular dos citros é importante para aumentar a produtividade e a longevidade dessa cultura, principalmente em solos que apresentam horizontes coesos subsuperficiais. Assim, o objetivo deste trabalho foi avaliar a distribuição das raízes da laranjeira 'Hamlin' enxertada em limoeiro 'Cravo', com 15 anos de idade, em uma toposseqüência de tabuleiro de Sapeaçu-BA, composta por Latossolo Amarelo argissólico (LAx) e Argissolo Amarelo (PAx), ambos coesos, e Argissolo Acin...
關鍵字: coastal
出版: Sociedade Brasileira de Ciência do Solo
ISSN: 0100-0683
來源: DOAJ
System ID: 429143
208003
電子期刊
關鍵字: pilot
出版: Wolters Kluwer Medknow Publications
ISSN: 0970-4388
來源: DOAJ
System ID: 429142
208004
電子期刊
Delacour J.
The offshore hydrocarbon potential of Europe was fully revealed during the 1970s by various major discoveries which, after the first oil shock in 1973 and in the light of the high energy consumption in this zone, were a major asset in the new equilibria that would be found between producing and consuming countries. The offshore potential of Europe is concentrated in two zones: the North Sea and the Mediterranean. The North Sea, with the particularly harsh operating conditions, has quickly given ...
關鍵字: offshore
出版: EDP Sciences
ISSN: 1294-4475
來源: DOAJ
System ID: 429141
208005
電子期刊
P. Katsafados, and E. Mavromatidis, and A. Papadopoulos, and I. Pytharoulis
The development and evolution of a deep low-pressure system over the Eastern Mediterranean has been investigated in comparative numerical experiments with a limited area model using climatological, gridded analyses, satellite-derived and high-resolution re-analysis sea surface temperatures (SSTs) as lower boundary conditions. The severe event of 21–22 January 2004 was selected in view of its strength and considerable impact on the coastal communities of the Northern Aegean Sea. The aim of this s...
關鍵字: sea
出版: Copernicus Publications
ISSN: 1561-8633
來源: DOAJ
System ID: 429140
208006
電子期刊
Andrzej Jankowski
This paper presents the results of an attempt to reproduce, with theaid of a numerical circulation model, the hydrological conditions observedin the coastal area of the southern Baltic in September 1989.A large fall in surface layer seawater temperature was recordedin September 1989 at two coastal stations in the vicinity ofKolobrzeg and Wladyslawowo. This upwelling-like phenomenon was assumed tobe related to the specific anemobaric situation in September 1989,however typical of this phenomeno...
關鍵字: coastal
出版: Elsevier
ISSN: 0078-3234
來源: DOAJ
System ID: 429139
208007
電子期刊
Chakravorty I, and Chahal K, and Austin G
Indranil Chakravorty1, Kamaljit Chahal2, Gillian Austin21St George&amp;#39;s Hospital, London, 2East and North Hertfordshire NHS Trust, Lister Hospital and Primary Care Trust, Stevenage, Hertfordshire, UKIntroduction: Chronic obstructive pulmonary disease (COPD) patients with mucus hypersecretion tend to demonstrate increased frequency of infective exacerbations and a steeper slope of decline in lung function. Enhanced mucociliary clearance with high-frequency chest wall oscillation (HFCWO) devi...
關鍵字: pilot
出版: Dove Medical Press
ISSN: 1176-9106
來源: DOAJ
System ID: 429138
208008
電子期刊
José Ledamir Sindeaux Neto, and Michele Velasco, and José Mauro Vianna da Silva, and Patricia de Fátima Saco dos Santos, and Osimar Sanches, and Patricia Matos, and Edilson Matos
Abstract The genus Myxobolus, parasites that infect fishes, which cause myxobolosis, includes spore organisms belonging to the phylum Myxozoa and represents approximately 36% of all species described for the entire phylum. This study describes lymphocytic meningoencephalomyelitis associated withMyxobolus sp. infection in the brain and spinal cord (the central nervous system, CNS) of Eigenmannia sp., from the Amazon estuary region, in the Administrative District of Outeiro (DAOUT), Belém, Pará, B...
關鍵字: fish
出版: Colégio Brasileiro de Parasitologia Veterinaria
ISSN: 0103-846X
來源: DOAJ
System ID: 429137
208009
電子期刊
DANIEL B. ALENCAR, and ARTHUR A. MELO, and GISELLE C. SILVA, and REBECA L. LIMA, and KELMA M.S. PIRES-CAVALCANTE, and RÔMULO F. CARNEIRO, and ADRIANA S. RABELO, and OSCARINA V. SOUSA, and REGINE H.S.F. VIEIRA, and FRANCISCO A. VIANA, and ALEXANDRE H. SAMPAIO, and SILVANA SAKER-SAMPAIO
Marine invertebrates are capable of synthesizing bioactive compounds, which may be beneficial to human health. The aim of this study was to evaluate the antioxidant, hemolytic, antimicrobial and cytotoxic activities of crude extract (70% EtOH), and dichloromethane (DCM), ethyl acetate (EtOAc), and aqueous (Aq) fractions of the marine zoanthid Palythoa caribaeorum. The phenolic compound contents of the crude extract, DCM, EtOAc and Aq fractions were 12.33, 18.17, 10.53, and 3.18 mg GAE per gram, ...
關鍵字: marine
出版: Academia Brasileira de Ciências
ISSN: 0001-3765
來源: DOAJ
System ID: 429136
208010
電子期刊
Liliana Rusu
The last decades continuously increasing of the economical activities in the coastal environment of the Black Sea is obviously leading to the enhancement of the pollution risks due to accidental oil spillages. Starting from the fact that most accidents were generated by an inadequate forecast of the wave conditions, the aim of the present work is to develop a methodology based on spectral phase–averaging wave models able to predict the wave propagation in the coastal environment. The wave induc...
關鍵字: coastal
出版: Vilnius Gedinimas Technical University
ISSN: 1648-6897
來源: DOAJ
System ID: 429135
208011
電子期刊
Flavia C.F. Pinheiro, and Hudson T. Pinheiro, and Thiago J.F. Costa, and João B. Teixeira, and João L. Gasparini, and Jean-Christophe Joyeux, and Agnaldo S. Martins
The harvesting of marine organisms for aquarium and ornamental art crafts is a very common and widespread activity, threatening a number of coral reef species. The goal of this manuscript is to report the intensive harvesting of two marine invertebrate species, the starfish Oreaster reticulatus and the gorgonian Phyllogorgia dilatata, in reef environments of a national priority area for the creation of a Marine Protected Area (MPA) in the Espírito Santo State, central coast of Brazil. These spec...
關鍵字: marine
出版: Fund for Support and Development of Protected Areas
ISSN: 2500-008X
來源: DOAJ
System ID: 429134
208012
電子期刊
A. S. Pradeep Ram, and X. Mari, and J. Brune, and J. P. Torréton, and V. T. Chu, and P. Raimbault, and J. Niggemann, and T. Sime-Ngando
Increasing human activity has raised concerns about the impact of deposition of anthropogenic combustion aerosols (i.e., black carbon; BC) on marine processes. The sea surface microlayer (SML) is a key gate for the introduction of atmospheric BC into the ocean; however, relatively little is known of the effects of BC on bacteria-virus interactions, which can strongly influence microbially mediated processes. To study the impact of BC on bacteria-virus interactions, field investigations involving...
關鍵字: coastal
出版: BioOne
ISSN: 2325-1026
來源: DOAJ
System ID: 429133
208013
電子期刊
Damià Gomis, and Enrique Álvarez-Fanjul, and Gabriel Jordà, and Marta Marcos, and Roland Aznar, and Ernesto Rodríguez-Camino, and Juan Carlos Sánchez-Perrino, and José María Rodríguez-González, and Adrián Martínez-Asensio, and Josep Llasses, and Begoña Pérez, and Marcos G. Sotillo
We present an overview of the changes expected during the 21st century in key marine parameters (sea surface temperature, sea surface salinity, sea level and waves) in the sector of the NE Atlantic Ocean close to the Spanish shores. Under the A1B scenario, open-sea surface temperatures would increase by 1°C to 1.5°C by 2050 as a consequence of global ocean warming. Near the continental margin, however, the global temperature rise would be counteracted by an enhancement of the seasonal upwelling....
關鍵字: marine
出版: Consejo Superior de Investigaciones Científicas
ISSN: 0214-8358
來源: DOAJ
System ID: 429132
208014
電子期刊
Vinu Sherimon
Ensuring the quality of food, particularly seafood has increasingly become an important issue nowadays. Quality Management Systems empower any organization to identify, measure, control and improve the quality of the products manufactured that will eventually lead to improved business performance. With the advent of new technologies, now intelligent systems are being developed. To ensure the quality of seafood, an ontology based seafood quality analyzer and miner (ONTO SQAM) model is proposed. T...
關鍵字: seafood
出版: Elsevier
ISSN: 2210-8327
來源: DOAJ
System ID: 429131
208015
電子期刊
U. Löptien, and L. Axell
The Baltic Sea is a seasonally ice-covered marginal sea located in a densely populated area in northern Europe. Severe sea ice conditions have the potential to hinder the intense ship traffic considerably. Thus, sea ice fore- and nowcasts are regularly provided by the national weather services. Typically, the forecast comprises several ice properties that are distributed as prognostic variables, but their actual usefulness is difficult to measure, and the ship captains must determin...
關鍵字: ship
出版: Copernicus Publications
ISSN: 1994-0416
來源: DOAJ
System ID: 429130
208016
電子期刊
Fernando A. Abrunhosa, and Danielle C.B. Arruda, and Darlan J.B. Simith, and Carlos A.M. Palmeira
The present study investigated whether the callianassid Callichirus major shows a lecithotrophic behaviour during larval development. Two experiments were carried out. In the first experiment, larvae were subjected to an initial period of feeding, while in the second they were subjected to an initial period of starvation. In Experiment 1, 80% of C. major larvae succeeded moulting to juvenile stage in treatment with larvae fed every day. In the treatments with larvae fed for 1, 2 and 3 days there...
關鍵字: shrimp
出版: Academia Brasileira de Ciências
ISSN: 0001-3765
來源: DOAJ
System ID: 429129
208017
電子期刊
Vasja Mikuž
In paper the bivalve of species Lithophaga ornatissima (Mayer-Eymar, 1886) is described,found in a corallite in Oligocene beds of the Plaznica creek at Poljšica near Podnart.This is the first find of this litophaga species in Slovenia. In literature no finds of fossil date mussels are mentioned from surroundings of Polj{ica in Upper Carniola.
關鍵字: marine
出版: Geological Survey of Slovenia
ISSN: 0016-7789
來源: DOAJ
System ID: 429128
208018
電子期刊
M. Faneca Sànchez, and J. L. Gunnink, and E. S. van Baaren, and G. H. P. Oude Essink, and B. Siemon, and E. Auken, and W. Elderhorst, and P. G. B. de Louw
The forecast of climate change effects on the groundwater system in coastal areas is of key importance for policy makers. The Dutch water system has been deeply studied because of its complex system of low-lying areas, dunes, land won to the sea and dikes, but nowadays large efforts are still being done to find out the best techniques to describe complex fresh-brackish-saline groundwater dynamic systems. In this paper, we describe a methodology consisting of high-resolution airborne electromagne...
關鍵字: coastal
出版: Copernicus Publications
ISSN: 1027-5606
來源: DOAJ
System ID: 429127
208019
電子期刊
Marilda Rigobello-Masini, and Elizabeth Aidar, and Jorge C. Masini
The activities of extra and intracellular carbonic anhydrases (CA) were studied in the microalgae Tetraselmis gracilis (Kylin) Butcher (Chlorophyta, Prasinophyceae) growing in laboratory cultivation. During ten days of batch cultivation, daily determinations of pH, cell number, enzymatic activity, and total dissolved inorganic carbon (DIC), as well as its main species, CO2 and HCO3-, were performed. Enzymatic activity increased as the growing cell population depleted inorganic carbon from the me...
關鍵字: marine
出版: Sociedade Brasileira de Microbiologia
ISSN: 1517-8382
來源: DOAJ
System ID: 429126
208020
電子期刊
Carmindo Carlos Cardoso Campos, and Patrícia Cavalcanti de Albuquerque, and Ivson José da Silva Braga
CONTEXTO: O fisioterapeuta na unidade hospitalar atua sobre os efeitos da hipoatividade ou inatividade do paciente acamado. Na prática diária, a contração do músculo da panturrilha é difundida entre os profissionais de saúde no ambiente hospitalar, principalmente nos períodos de pré e pós-operatório, como forma de diminuir a estase venosa e os riscos de trombose venosa profunda nos membros inferiores. OBJETIVO: Avaliar o volume de fluxo venoso na bomba sural, através de ultra-sonografia doppler,...
關鍵字: pilot
出版: Sociedade Brasileira de Angiologia e de Cirurgia Vascular (SBACV)
ISSN: 1677-5449
來源: DOAJ
System ID: 429125
208021
電子期刊
EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA)
Following an application from Laboratoire Lescuyer, submitted pursuant to Article 14 of Regulation (EC) No 1924/2006 via the Competent Authority of France, the Panel on Dietetic Products, Nutrition and Allergies (NDA) was asked to deliver an opinion on the scientific substantiation of a health claim related to the combination of artichoke leaf dry extract standardised in caffeoylquinic acids, monacolin K in red yeast rice, sugar-cane derived policosanols, OPC from French maritime pine bark, garl...
關鍵字: maritime
出版: Wiley
ISSN: 1831-4732
來源: DOAJ
System ID: 429124
208022
電子期刊
R. Anastácio, and J. M. Gonzalez, and K. Slater, and M. J. Pereira
Abstract Field data are still recorded on paper in many worldwide beach surveys of nesting marine turtles. The data must be subsequently transferred into an electronic database, and this can introduce errors in the dataset. To minimize such errors, the “Turtles” software was developed and piloted to record field data by one software user accompanying one Tortuguero in Akumal beaches, Quintana Roo, Mexico, from June 1st to July 31st during the night patrols. Comparisons were made between exported...
關鍵字: marine
出版: Nature Publishing Group
ISSN: 2045-2322
來源: DOAJ
System ID: 429123
208023
電子期刊
Alyne Elizabeth Delaney, and Maria Hadjimichael
This article presents data from a citizens jury-inspired deliberative workshop held to tease out stakeholder views of management priorities for a section of the North Sea: the Dogger Bank. As this article reveals, the lessons learned from the Dogger Bank workshop advocate not simply what is required for managing one particular ocean commons, but also highlight some of the public participation research design failings, taking public participation in resource management further by adding to the li...
關鍵字: ocean
出版: Utrecht University Library Open Access Journals (Publishing Services)
ISSN: 1875-0281
來源: DOAJ
System ID: 429122
208024
電子期刊
Simona Rimoldi, and Giovanna Finzi, and Chiara Ceccotti, and Rossana Girardello, and Annalisa Grimaldi, and Chiara Ascione, and Genciana Terova
Abstract Background Due to the paucity of oceanic resources utilized in the preparation of diets for cultured fish, commercial feed producers have been trying to replace fishmeal (FM) using alternative protein sources such as vegetable protein meals (VMs). One of the main drawbacks of using VMs in fish feed is related to the presence of a variety of anti-nutritional factors, which could trigger an inflammation process in the distal intestine. This reduces the capacity of the enterocytes to absor...
關鍵字: sea
出版: BMC
ISSN: 2234-1757
來源: DOAJ
System ID: 429121
208025
電子期刊
Federico Suárez
El objeto de esta ponencia es analizar los aspectos socioeconómicos y jurídicos que sustentan la reforma de la Constitución por vía de referendo, que pretende prescribir el derecho fundamental al agua, e indicar que las disposiciones propuestas a la ciudadanía son acertadas para resolver sus necesidades más sentidas en esta materia. La tesis central del texto es que el orden constitucional colombiano requiere una reforma de esta naturaleza porque debe honrar los compromisos adquiridos internacio...
關鍵字: sea
出版: Universidad Externado de Colombia
ISSN: 0122-9893
來源: DOAJ
System ID: 429120
208026
電子期刊
Rejane Jurema Mansur Custódio Nogueira, and Péricles de Albuquerque Melo Filho, and Elcida de Lima Araújo
Objetivou-se avaliar in loco as relações hídricas e respectivas correlações em quatro acessos de mangaba (M-UFRPE 1, M-UFRPE 2, M-UFRPE 3 e M-UFRPE 4) cultivados na região litorânea do Estado de Pernambuco. As medidas foram tomadas em folhas adultas, completamente expandidas, em duas situações de exposição à luminosidade: exposição solar plena e sombreamento natural. As variáveis analisadas foram: temperatura foliar (Tf), transpiração (E) e resistência difusiva (Rs). Verificou-se que as folhas s...
關鍵字: coastal
出版: Universidade Federal de Santa Maria
ISSN: 0103-8478
來源: DOAJ
System ID: 429119
208027
電子期刊
Eli D. Ehrenpreis, and Dylan G. Smith
Background: Women with cervical cancer often have anal human papillomavirus (HPV) infection and anal dysplasia. However, effectiveness of anal HPV screening is unknown. Methods: A dynamic model was constructed using STELLA. Populations are represented as ''stocks'' that change according to model rates. Initial anal cytology in new cervical cancer patients, dysplasia progression and regression, cost of treating high-grade squamous intraepithelial lesions (HSIL), and lifetime costs for anal cancer...
關鍵字: pilot
出版: Elsevier
ISSN: 2405-8521
來源: DOAJ
System ID: 429118
208028
電子期刊
D. Pulido-Velazquez, and D. Pulido-Velazquez, and A. Renau-Pruñonosa, and C. Llopis-Albert, and I. Morell, and A.-J. Collados-Lara, and J. Senent-Aparicio, and L. Baena-Ruiz
Any change in the components of the water balance in a coastal aquifer, whether natural or anthropogenic, can alter the freshwater–salt water equilibrium. In this sense climate change (CC) and land use and land cover (LULC) change might significantly influence the availability of groundwater resources in the future. These coastal systems demand an integrated analysis of quantity and quality issues to obtain an appropriate assessment of hydrological impacts using density-dependent flow solu...
關鍵字: coastal
出版: Copernicus Publications
ISSN: 1027-5606
來源: DOAJ
System ID: 429117
208029
電子期刊
Arthur Silveira de Figueiredo, and Luiz Carlos Takita, and Saul Goldenberg
O objetivo da pesquisa é a utilização da hidroxiapatita porosa de coral, como um xenoenxerto ósseo. Utilizou-se onze coelhos da raça Nova Zelândia, nos quais fez-se defeito padrão nas metáfises femorais distais. Nesses locais praticou-se o implante de hidroxiapatita porosa de coral ou enxerto ósseo autógeno. Fez-se estudo clínico, macroscópico, exames radiológicos e histológicos em intervalos de duas, quatro e doze semanas. Os resultados comparativos foram similares enter dois tipos de implantes...
關鍵字: coral
出版: Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia
ISSN: 0102-8650
來源: DOAJ
System ID: 429116
208030
電子期刊
JOÃO WAGNER A. CASTRO, and KENITIRO SUGUIO, and JOSÉ C.S. SEOANE, and ALINE M. DA CUNHA, and FABIO F. DIAS
The present paper aims to investigate the relative sea-level and the coastal evolution during the Holocene in the Rio de Janeiro coastline, based on geological and biological indicators. Using topographic survey, excavation and coring, and 14C dating of these coastal deposits and beachrocks outcrops, we have reconstructed a sea-level curve for the Holocene. For the first time on the Brazilian coast it was identified a negative record of relative sea-level during Late Pleistocene and Early Holoce...
關鍵字: coastal
出版: Academia Brasileira de Ciências
ISSN: 0001-3765
來源: DOAJ
System ID: 429115
208031
電子期刊
Yu-Chai Lai
This study investigated the genealogy of iconographic interpretation. By adopting an aesthetic communication model for reader responses as the basis for consideration, we regarded reader-book interactions as the artistic and receptive poles of the conversational process. Regarding the artistic pole, we explored the inviting structure of iconographic narrative. Regarding the receptive pole, we cited empirical studies in which the results are related to iconographic interpretation, in addition to ...
關鍵字: pilot
出版: Tamkang University Press
ISSN: 1013-090X
來源: DOAJ
System ID: 429114
208032
電子期刊
Neena K Sharma, and Kristin Robbins, and Kathleen Wagner, and Yvonne M Colgrove
Background: Exercise can be beneficial for cardiopulmonary, musculoskeletal or neurological systems, and other factors including mood, and may be beneficial in reducing fall risks, dementia and variables associated with quality of life (QOL). Parkinson′s disease (PD) produces progressive motor and cognitive deterioration that may leave those inflicted unable to participate in standard exercise programs. Alternative forms of exercise such as yoga may be successful in improving physical function, ...
關鍵字: pilot
出版: Wolters Kluwer Medknow Publications
ISSN: 0973-6131
來源: DOAJ
System ID: 429113
208033
電子期刊
Changkian, S., and Kaewtubtim, P.
A study of the evolution of element, crystal structure and thermoluminescence signal versus gamma irradiation dose were carried out for calcite shells samples. The composition of element was studied by X-ray fluorescence spectrometer. As identified by X-ray diffraction and SEM/EDS analysis, two polymorphs of calcium-carbonate were extracted: calcite and aragonite. The evolution of TL signal versus gamma irradiation dose using the TL reader (Harshaw 2000) was initially dependent on crystal struct...
關鍵字: marine
出版: Prince of Songkla University
ISSN: 0125-3395
來源: DOAJ
System ID: 429112
208034
電子期刊
Adam Stelmaszewski
The paper presents an improved method of determining petroleum pollutants in water based on fluorescence, which allows the oil content to be estimated with an accuracy better than 50%. The method was used to measure the oil content in Gulf of Gda&#x0144;sk seawater sampled at Gdynia-Or&#x0142;owo between January 2006 and September 2008. The 174 measurements made during this period ranged from 1 to 120 &micro;g kg<sup>-1</sup>, but the majority did not exceed 20 &micro;g kg<sup>-1</sup>. The most...
關鍵字: coastal
出版: Elsevier
ISSN: 0078-3234
來源: DOAJ
System ID: 429111
208035
電子期刊
Tarmo Soomere, and Kai Myrberg, and Matti Leppäranta, and Alexei Nekrasov
The main findings of studies of the physical oceanography of the Gulf of Finland (GoF) during 1997-2007 are reviewed. The aim is to discuss relevant updates published in international peer-reviewed research papers and monographs, bearing in mind that a comprehensive overview of the studies up to the mid-1990s is available (Alenius et al. 1998). We start the discussion with updates on the basic hydrographical and stratification conditions, and progress in the understanding of atmospheric forcing ...
關鍵字: oceanography
出版: Elsevier
ISSN: 0078-3234
來源: DOAJ
System ID: 429110
208036
電子期刊
Cooper Cindy L, and Hind Daniel, and Parry Glenys D, and Isaac Claire L, and Dimairo Munyaradzi, and O'Cathain Alicia, and Rose Anita, and Freeman Jennifer V, and Martin Leonie, and Kaltenthaler Eva C, and Thake Anna, and Sharrack Basil
<p>Abstract</p> <p>Background</p> <p>People with multiple sclerosis (MS) are at high risk of depression. We undertook a pilot trial of computerised cognitive behavioural therapy (CCBT) for the treatment of depression in people with MS to test the feasibility of undertaking a full trial.</p> <p>Methods</p> <p>Participants with a diagnosis of MS and clinical levels of depression were recruited through out-patient clinics and postal screening questionnaires at two UK centres and randomised to CCBT ...
關鍵字: pilot
出版: BMC
ISSN: 1745-6215
來源: DOAJ
System ID: 429109
208037
電子期刊
Jun-Hwan Kim, and Hee-Ju Park, and Kyeong-Wook Kim, and Ju-Chan Kang
Abstract Juvenile black sea bream, Acanthopagrus schlegelii, were exposed to waterborne zinc (Zn) at concentrations of 0, 200, and 400 μg/L, at temperatures of 18 or 26 °C for 4 weeks. Superoxide dismutase (SOD) activities in the liver and gill of A. schlegelii significantly increased following exposure to waterborne Zn. Significant reduction in glutathione S-transferase (GST) activity in the liver and gill was observed following exposure to waterborne Zn. Glutathione (GSH) concentrations in the...
關鍵字: sea
出版: BMC
ISSN: 2234-1757
來源: DOAJ
System ID: 429108
208038
電子期刊
Chorong Lee, and Soohwan Kim, and Se-Jin Lim, and Kyeong-Jun Lee
Abstract An 8-week feeding trial was conducted to study the effect of dietary supplementation of a biofloc powder on growth performance and non-specific immune response of Litopenaeus vannamei. Seven experimental diets were prepared with supplementation of graded levels of dried biofloc powder by 0, 0.5, 1.0, 2.0, 4.0, 6.0, and 8.0% (designated as Con, BF0.5, BF1, BF2, BF4, BF6, and BF8, respectively). Triplicate groups of shrimp (1.01 ± 0.01 g) were hand-fed with one of the diets four times a d...
關鍵字: shrimp
出版: BMC
ISSN: 2234-1757
來源: DOAJ
System ID: 429107
208039
電子期刊
Morgane Paul Magouana Anvo, and Rokyatou Sissao, and Benié Rose Danielle Aboua, and Chantal Yvette Zoungrana-Kaboré, and Athanase Kraidy Otchoumou, and Essetchi Paul Kouamelan, and Aboubacar Toguyéni
Abstract The present study was performed to investigate the effect of fish oil (FO), palm oil (PO), and cashew kernel oil (CKO) as the dietary lipid sources on the growth performance, tissues fatty acids composition and economical profitability in Clarias gariepinus fingerlings. Three isonitrogenous (49.32%), isolipidic (15.18%), and isoenergetic (21 kJ/g) diets were formulated, differed only to the added lipid source and coded accordingly as D1 (fish oil), D2 (palm oil), and D3 (cashew kernel o...
關鍵字: fish
出版: SpringerOpen
ISSN: 2008-4935
來源: DOAJ
System ID: 429106
208040
電子期刊
Takayuki HANAZATO, and Shigeto ODA
Diel vertical migration (DVM) of larvae of the phantom midge Chaoborus flavicans (Diptera: Chaoboridae) inhabiting a fishless pond and a fish-abundant lake (Lake Nakanuma) was studied in the field and in the laboratory. In the fishless pond, dissolved oxygen concentration and water temperature were homogeneously distributed in the vertical profiles and Chaoborus larvae did not show DVM. In contrast, there was thermal stratification and an anoxic layer in Lake Nakanuma, and 2nd, 3rd and 4th insta...
關鍵字: fish
出版: PAGEPress Publications
ISSN: 1129-5767
來源: DOAJ
System ID: 429105
208041
電子期刊
C. Reed, and M. J. Evans, and L. R. Crilley, and W. J. Bloss, and T. Sherwen, and K. A. Read, and J. D. Lee, and L. J. Carpenter
We present 2 years of NO<sub><i>x</i></sub> observations from the Cape Verde Atmospheric Observatory located in the tropical Atlantic boundary layer. We find that NO<sub><i>x</i></sub> mixing ratios peak around solar noon (at 20–30 pptV depending on season), which is counter to box model simulations that show a midday minimum due to OH conversion of NO<sub>2</sub> to HNO<sub>3</sub>. Production of NO<sub><i>x</i></sub> via decomposition of organic nitrogen species and the photolysis of HNO<sub>3...
關鍵字: marine
出版: Copernicus Publications
ISSN: 1680-7316
來源: DOAJ
System ID: 429104
208042
電子期刊
Jiangfeng Zhu, and Liuxiong Xu, and Xiaojie Dai, and Xinjun Chen, and Yong Chen
The objective of this study was to estimate depth distribution of pelagic species captured in a longline fishery and to evaluate the difference in depth distribution among species. We estimated depth distribution for 17 frequently captured species based on a Chinese longline fishing trip targeting bigeye tuna (Thunnus obesus) in the central-eastern Pacific Ocean in February-November 2006. The depth distributions of 13 bycatch species were significantly different from that of bigeye tuna. Alt...
關鍵字: fishery
出版: Consejo Superior de Investigaciones Científicas
ISSN: 0214-8358
來源: DOAJ
System ID: 429103
208043
電子期刊
S. GARCIA-SANZ, and P. G. NAVARRO, and F. TUYA
Despite sea-urchins can play an important role affecting the community structure of subtidal bottoms, factors controlling the dynamics of sea-urchin populations are still poorly understood. We assessed the seasonal variation in recruitment of three sea-urchin species (Diadema africanum, Paracentrotus lividus and Arbacia lixula) at Gran Canaria Island (eastern Atlantic) via monthly deployment of artificial collectors throughout an entire annual cycle on each of four adjacent habitat patches (seag...
關鍵字: sea
出版: Hellenic Centre for Marine Research
ISSN: 1108-393X
來源: DOAJ
System ID: 429102
208044
電子期刊
Rodrigo H. Castro, and Rogerio C. Costa, and Adilson Fransozo, and Fernando L. Mantelatto
The population structure of the penaeidean shrimp Xyphopenaeus kroyeri was studied in Ubatuba Bay, Ubatuba, São Paulo, Brazil. The period and site of juvenile recruitment were monitored using a monthly sampling design with eight fixed areas (transects) from September 1995 to August 1996. The population structure was assessed using size frequency distributions (based on carapace length) for each month and sampling area. Females were significantly larger than males, suggesting a differential growt...
關鍵字: shrimp
出版: Consejo Superior de Investigaciones Científicas
ISSN: 0214-8358
來源: DOAJ
System ID: 429101
208045
電子期刊
M. Scalas, and P. Marra, and L. Tedesco, and R. Quarta, and E. Cantoro, and A. Tumolo, and D. Rollo, and M. Spagnulo
This article describes the architecture of sea situational awareness (SSA) platform, a major asset within TESSA, an industrial research project funded by the Italian Ministry of Education and Research. The main aim of the platform is to collect, transform and provide forecast and observational data as information suitable for delivery across a variety of channels, like web and mobile; specifically, the ability to produce and provide forecast information suitable for creating SSA-enabled applicat...
關鍵字: sea
出版: Copernicus Publications
ISSN: 1561-8633
來源: DOAJ
System ID: 429100
208046
電子期刊
Renato Hajenius Aché de Freitas, and Ricardo S. Rosa, and Bradley M. Wetherbee, and Samuel H. Gruber
Sharks face a number of obstacles for surviving their first several years of life and many species occupy nursery areas. Although estimates of survival, particularly for young age classes, are essential for assessing, monitoring and effectively managing animal populations, there have been relatively few calculations of survival within shark populations and even fewer estimates based on direct methods for sharks on their nursery grounds. We used tag-recapture methods to estimate the population si...
關鍵字: marine
出版: Sociedade Brasileira de Ictiologia
ISSN: 1679-6225
來源: DOAJ
System ID: 429099
208047
電子期刊
Alexandre Cunha Ribeiro
The eastern Brazilian coastal drainages are of great biogeographical significance, because of their highly endemic fish faunas. Phylogenetic patterns suggest a close biotic relationship between the rivers that flow into the Atlantic and those on the adjacent upland crystalline shield. However, little has been said on the dynamics of the geological processes causally related to the cladogenetic events between these areas. Distributional and phylogenetic patterns suggest a close association with t...
關鍵字: coastal
出版: Sociedade Brasileira de Ictiologia
ISSN: 1679-6225
來源: DOAJ
System ID: 429098
208048
電子期刊
Juanes F., and Gephard S., and De La Hoz J., and Moran P., and Dopico E., and Horreo J. L., and Garcia-Vazquez E.
Atlantic salmon stocks in northern Spain are at the southern range of the species distribution. As such they are likely more vulnerable to environmental change and human disturbance. The Nalon-Narcea River salmon is one such population in Asturias, Spain. The river is dammed throughout the watershed with few fish passage facilities. However, angling data show that salmon returns are consistent although the population is relatively small. We have employed one tributary as a model, the Ri...
關鍵字: salmon
出版: EDP Sciences
ISSN: 1961-9502
來源: DOAJ
System ID: 429097
208049
電子期刊
Bruno Cavalcante Bellini, and Douglas Zeppelini
Seira Lubbock, 1869 is the most speciose genus of Collembola in Brazil. Herein, we describe and illustrate a new species of Seira, Seira ritae sp. nov., collected in João Pessoa, state of Paraíba, Brazil, in an urban seaside area. The new species shows many similarities with S. mendoncea Bellini & Zeppelini, 2009 especially in what concerns the dorsal distribution of the macrochaetae of the head, the metathorax, and the first three abdominal segments. However, the two species can be distinguishe...
關鍵字: coastal
出版: Pensoft Publishers
ISSN: 1984-4670
來源: DOAJ
System ID: 429096
208050
電子期刊
Janaína Bumbeer, and Rosana Moreira da Rocha
ABSTRACT The number of biological invasions has grown dramatically in recent decades, as well as the world's human population and coastal development. Anthropogenic habitats, such as pier pilings and break waters, have been constantly added to marine environment, usually concentrated in estuarine areas. These habitats are focal points for marine invasions, but relatively little is known about the spread of non-indigenous species (NIS) to nearby natural habitats. This study aimed to determine the...
關鍵字: marine
出版: Pensoft Publishers
ISSN: 1984-4670
來源: DOAJ
System ID: 429095