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193301
電子期刊
CALLISTO M., and MORENO P., and GONÇALVES J. F. JR., and LEAL J. J. F., and ESTEVES F. A.
Diversity and biomass of Chironomidae larvae were studied between January-November 1993 and March-November 1994 in an impacted lagoon in Rio de Janeiro, Southeastern Brazil, in an attempt to establish the ecological consequences of anthropogenic eutrophication processes. Nine hundred and seventy-five organisms belonging to the Tanypodinae, Orthocladiinae, and Chironominae were collected. Polypedilum (62%) and Chironomus (58%) were the most common genera found in the limnetic and littoral zones.
關鍵字: coastal
出版: Instituto Internacional de Ecologia
ISSN: 1519-6984
來源: DOAJ
System ID: 414415
193302
電子期刊
Ajay Kumar Verma, and Ved Prakash, and Ambarish Joshi, and Surya Kant, and Ankit Bhatia
Oesophageopleural fistula (EPF) is an abnormal communication in between the oesophagous and pleural space such that the contents of oesophagous are drained into the pleural space surrounding the lungs. We describe a case of a middle-aged female who presented with right sided pyothorax secretions of which consisted of food particles. Chest computed tomography and barium swallow confirmed the diagnosis of oesophageopleural fistula, cause of which was found to be an accidental fish bone injury. Con...
關鍵字: fish
出版: Wolters Kluwer Medknow Publications
ISSN: 2320-8775
來源: DOAJ
System ID: 414414
193303
電子期刊
Alan M. Friedlander, and Brian J. Zgliczynski, and Enric Ballesteros, and Octavio Aburto-Oropeza, and Allan Bolaños, and Enric Sala
Fishes at Isla del Coco National Park, Costa Rica, were surveyed as part of a larger scientific expedition to the area in September 2009. The average total biomass of nearshore fishes was 7.8 tonnes per ha, among the largest observed in the tropics, with apex predators such as sharks, jacks, and groupers accounting for nearly 40% of the total biomass. The abundance of reef and pelagic sharks, particularly large aggregations of threatened species such as the scalloped hammerhead shark (up to 42 h...
關鍵字: fish
出版: Vicerractoría Investigación
ISSN: 0034-7744
來源: DOAJ
System ID: 414413
193304
電子期刊
Unnikrishnan B, and Hussain Shakir
The use of contact lens (CL) for the correction of refractive errors, cosmetic use and their usage as a therapeutic modality for corneal pathologies has increased tremendously over the years. The present study was conducted with the aim to find a pattern of CL use amongst college students with a focus on the rationale for CL use and problems related to their use. This study includes 371 college students who were current users of CL at the time of the study. Results showed that 96.8% of th...
關鍵字: coastal
出版: Wolters Kluwer Medknow Publications
ISSN: 0301-4738
來源: DOAJ
System ID: 414412
193305
電子期刊
Alejandra Filippo Gonzalez Neves dos Santos, and Luciano Neves dos Santos, and Francisco Gerson Araújo
Despite being one of the most well-known cichlid fish of importance to artisanal and sport fishing, and among the largest fishes in the Neotropics, data on digestive tract anatomy of peacock basses (Cichla spp.) are largely lacking, especially for non-native populations. in this paper, we describe for the first time the digestive tract morphology of Cichla kelberi, a voracious piscivore that was introduced in the 1950s into an oligotrophic and physically low-complex impoundment in Brazil. Peacoc...
關鍵字: fish
出版: Vicerractoría Investigación
ISSN: 0034-7744
來源: DOAJ
System ID: 414411
193306
電子期刊
M. E. Dueker, and G. D. O'Mullan, and K. C. Weathers, and A. R. Juhl, and M. Uriarte
Microbes in the atmosphere (microbial aerosols) play an important role in climate and provide an ecological and biogeochemical connection between oceanic, atmospheric, and terrestrial environments. However, the sources and environmental factors controlling the concentration, diversity, transport, and viability of microbial aerosols are poorly understood. This study examined culturable microbial aerosols from a coastal environment in Maine (USA) and determined the effect of onshore wind speed and...
關鍵字: coastal
出版: Copernicus Publications
ISSN: 1726-4170
來源: DOAJ
System ID: 414410
193307
電子期刊
Viviane Borges-Campos, and Elisabete Barbarino, and Sergio de Oliveira Lourenço
Microalgas apresentam diversas aplicações econômicas consagradas, como usos na aquicultura e na indústria de alimentos, havendo buscas por novos usos, como a geração de biomassa para produção de biodiesel. As possíveis aplicações estão diretamente relacionadas à taxa de crescimento e ao perfil químico das espécies. Assim, a seleção de condições que promovam o aproveitamento da biomassa algácea é fundamental para sua utilização econômica. Neste estudo, 10 espécies de microalgas marinhas foram cul...
關鍵字: marine
出版: Universidade Federal de Santa Maria
ISSN: 0103-8478
來源: DOAJ
System ID: 414409
193308
電子期刊
A. Mouton
關鍵字: aquatic
出版: AOSIS
ISSN: 1019-9128
來源: DOAJ
System ID: 414408
193309
電子期刊
Manuel Giraldo-Magíl
Antología poética. Eduardo Gómez Patarroyo. Los Libros de la Frontera, Barcelona, 2000, 127 págs.
關鍵字: sea
出版: Banco de la República
ISSN: 0006-6184
來源: DOAJ
System ID: 414407
193310
電子期刊
Carlos Sola Ayape
In November, 1946, just a few days before Miguel Alemán took charge as new president of Mexico, the Mexican press –concretely, the newspaper Novedades– would become an ink-and-paper stage for an important dialectic dispute between Alfonso Junco, a Mexican Catholic hispanicist, and Indalecio Prieto, a Spanish Socialist exile and undoubtedly, one of the most important political references of the Second Spanish Republic. Among the many questions left unanswered, there appeared the edges of one of t...
關鍵字: yacht
出版: El Colegio de México, A.C.
ISSN: 0185-0172
來源: DOAJ
System ID: 414406
193311
電子期刊
G. Arratia, and K. A. González-Rodríguez, and C. Hernández-Guerrero, and C. Hernández-Guerrero
A new genus and species – <i>Motlayoichthys sergioi</i> (ZooBank registration: urn:lsid:zoobank.org:pub:2C503741-2362-4234-8CE0-BB7D8BE5A236, urn:lsid:zoobank.org:act:EF5040FD-F306-4C0F-B9DA-2CC696CA349D) – from the Cretaceous (Albian-Cenomanian) of the Muhi Quarry, Hidalgo, central Mexico is assigned to the family Pachyrhizodontidae based on the presence of the inner premaxillary tooth and a few other cranial characters. Its unique suite of characters, that includes several autapomorphies ...
關鍵字: fish
出版: Copernicus Publications
ISSN: 2193-0066
來源: DOAJ
System ID: 414405
193312
電子期刊
Myriam Lteif, and Rita Mouawad, and Sharif Jemaa, and Gaby Khalaf, and Philippe Lenfant, and Marion Verdoit-Jarraya
Length-weight relationships were estimated for 8 elasmobranchs (3 sharks and 5 batoids) in the Lebanese marine waters, eastern Mediterranean. The values of parameter b ranged between 1.752 ± 0.4508 and 3.337 ± 0.2321. Sex influenced the length-weight relationships for the shark Centrophorus uyato (Rafinesque 1801) and the batoid Torpedo marmorata (Risso 1810). These relationships should be used only with the observed length ranges.
關鍵字: marine
出版: Elsevier
ISSN: 1687-4285
來源: DOAJ
System ID: 414404
193313
電子期刊
Magali Naville, and Jean-Nicolas VOLFF
The increasing availability of fish genome sequences has allowed to gain new insights into the diversity and host distribution of retroviruses in fish and other vertebrates. This distribution can be assessed through the identification and analysis of endogenous retroviruses, which are proviral remnants of past infections integrated in genomes. Retroviral sequences are probably important for evolution through their ability to induce rearrangements and to contribute regulatory and coding sequences...
關鍵字: fish
出版: Frontiers Media S.A.
ISSN: 1664-302X
來源: DOAJ
System ID: 414403
193314
電子期刊
Gonzalo M Gajardo, and John A Beardmore
The brine shrimp Artemia is a micro-crustacean, well adapted to the harsh conditions that severely hypersaline environments impose on survival and reproduction. Adaptation to these conditions has taken place at different functional levels or domains, from the individual (molecular-cellular-physiological) to the population level. Such conditions are experienced by very few equivalent macro-planktonic organisms; thus, Artemia can be considered a model animal extremophile offering a unique suite of...
關鍵字: shrimp
出版: Frontiers Media S.A.
ISSN: 1664-042X
來源: DOAJ
System ID: 414402
193315
電子期刊
David Jacinto, and Teresa Cruz, and Teresa Silva, and João J. Castro
The stalked barnacle Pollicipes pollicipes (Gmelin, 1790) is an important shellfish resource in Portugal. Due to the social-economic importance of barnacle harvesting, a management plan aimed at achieving a controlled and sustainable activity (including temporal and spatial closures, rotational harvesting, a limited number of harvesting licenses, bag and size limits for catches and catch reporting) was implemented in 2000 at the Berlengas Nature Reserve (RNB) in central Portugal. We evaluated...
關鍵字: fishery
出版: Consejo Superior de Investigaciones Científicas
ISSN: 0214-8358
來源: DOAJ
System ID: 414401
193316
電子期刊
Nadine Saleh, and Sanaa Awada, and Rana Awwad, and Sahar Jibai, and Chadi Arfoul, and Liliana Zaiter, and Wissam Dib, and Pascale Salameh
Background: Antibiotics are considered among the most commonly prescribed drug classes in developing countries. Inappropriate prescription of antibiotics is a major public health concern and is related to the development of antimicrobial resistance. Objective: This study aimed at assessing the appropriateness of antibiotic prescription by non-infectious disease physicians in a community setting in Lebanon. Methods: A pilot cross-sectional study was undertaken on community pharmacy patients prese...
關鍵字: pilot
出版: Taylor & Francis Group
ISSN: 2000-8686
來源: DOAJ
System ID: 414400
193317
電子期刊
Vanessa eRobitzch, and Eulalia eBanguera-Hinestroza, and Yvonne eSawall, and Abdulmohsin eAl-Sofyani, and Christian Robert Voolstra
The Red Sea is the world’s northernmost tropical sea. The 2,000 km long, but narrow basin creates distinct environmental conditions along its latitudinal spread. The Red Sea displays a pronounced salinity gradient from 41 to 37 PSU (north to south) with an opposing temperature gradient from 21-27°C in the north to 27-33.8°C in the south. The Red Sea further displays a decreasing nutrient gradient from south to north that can also influence underwater light fields due to higher phytoplankton cont...
關鍵字: coral
出版: Frontiers Media S.A.
ISSN: 2296-7745
來源: DOAJ
System ID: 414399
193318
電子期刊
A. D'Alessandro, and I. Guerra, and G. D'Anna, and A. Gervasi, and P. Harabaglia, and D. Luzio, and G. Stellato
We plan to deploy in the Taranto Gulf some Ocean Bottom broadband Seismometer with Hydrophones. Our aim is to investigate the offshore seismicity of the Sibari Gulf. The seismographic network optimization consists in the identification of the optimal sites for the installation of the offshore stations, which is a crucial factor for the success of the monitoring campaign. In this paper, we propose a two steps automatic procedure for the identification of the best stations geometry. In the first s...
關鍵字: offshore
出版: Copernicus Publications
ISSN: 1680-7340
來源: DOAJ
System ID: 414398
193319
電子期刊
L. GAROFALO, and A. ZACCARONI, and D. SCARAVELLI, and G. INSACCO, and M.P. ZANGRILLI, and A. NOVELLETTO, and R. LORENZINI
A putative hybrid sea turtle juvenile was evaluated with discriminant DNA markers. When compared with standard values for sea turtles, the general morphological features assigned the specimen to Caretta caretta, while the shape and coloration of the head and the beak profile fell within the Eretmochelys imbricata range; the front flippers were instead like those of a Chelonia mydas. Moreover, prefrontal scale number was outside the putative parental species’ ranges. The mitochondrial D-loop sequ...
關鍵字: sea
出版: Hellenic Centre for Marine Research
ISSN: 1108-393X
來源: DOAJ
System ID: 414397
193320
電子期刊
Marta Hernández-Ruiz, and Xosé Antón Álvarez-Salgado
Coastal oceans are known to receive increasing inputs of reactive N as a result of the anthropogenic alteration of N cycling at the global scale, which may greatly alter nutrient supply to microbial plankton communities. The influence of nutrient availability (mainly inorganic N and P and/or organic C) on species composition has been widely reported for both eukaryotes and prokaryotes. The Ría de Vigo is a eutrophic embayment located in the coastal system of the NW Iberian Peninsula. Previous s...
關鍵字: coastal
出版: Frontiers Media S.A.
ISSN: 2296-7745
來源: DOAJ
System ID: 414396
193321
電子期刊
Fiona Tomas, and Javier Romero, and Xavier Turon
To better understand the biological controls that regulate sea urchin dynamics, we studied the effects of potential inter- and intra-specific competition for food on several biological variables of the main sea urchin in the Mediterranean (Paracentrotus lividus). We carried out a caging experiment in which we manipulated sea urchin density (natural vs. high density) and herbivorous fish (Sarpa salpa) accessibility (free access vs. exclusion) in a Posidonia oceanica meadow. No evidence of competi...
關鍵字: seagrass
出版: Consejo Superior de Investigaciones Científicas
ISSN: 0214-8358
來源: DOAJ
System ID: 414395
193322
電子期刊
Carolina eCruz Viggi, and Enrica ePresta, and Marco eBellagamba, and Saulius eKaciulis, and Santosh Kiran Balijepalli, and Giulio eZanaroli, and Marco ePetrangeli Papini, and Simona eRossetti, and Federico eAulenta
This study presents the proof-of-concept of the Oil-Spill Snorkel: a novel bioelectrochemical approach to stimulate the oxidative biodegradation of petroleum hydrocarbons in sediments. The Oil-Spill Snorkel consists of a single conductive material (the snorkel) positioned suitably to create an electrochemical connection between the anoxic zone (the contaminated sediment) and the oxic zone (the overlying O2-containing water). The segment of the electrode buried within the sediment plays a role of...
關鍵字: marine
出版: Frontiers Media S.A.
ISSN: 1664-302X
來源: DOAJ
System ID: 414394
193323
電子期刊
Richard Winterbottom, and Robert Hanner, and Mary Burridge, and Margaret Zur
A genetic analysis of partial mitochondrial 5&rsquo; cytochrome c oxidase I gene (DNA barcode) sequences of 473 specimens assigned to 52 morphological species (including four known, but not formally named, species) of the gobiid genus Trimma revealed the presence of 94 genetic lineages. Each lineage was separated by > 2% sequence divergence. Thus there were an additional 42 haplogroups recognizable as provisional candidate species given that a value of > 2% difference is typical of different spe...
關鍵字: fish
出版: Pensoft Publishers
ISSN: 1313-2970
來源: DOAJ
System ID: 414393
193324
電子期刊
Jan Jankowski
The problem describing a ship motion in waves comprises the Laplace equation, boundary condition on wetted surface of the ship, condition on the free surface of the sea in the form of a differential equation, the radiation condition, and a condition at infinity. This problem can be transformed to a Fredholm equation of second kind, and then numerically solved using the boundary element method, if the fundamental solution of the problem is known. This paper presents the derivation of the fundamen...
關鍵字: ship
出版: AGH Univeristy of Science and Technology Press
ISSN: 1232-9274
來源: DOAJ
System ID: 414392
193325
電子期刊
D. A. Lack, and J. J. Corbett
The International Maritime Organization (IMO) has moved to address the health and climate impact of the emissions from the combustion of low-quality residual fuels within the commercial shipping industry. Fuel sulfur content (F<sub>S</sub>) limits and an efficiency design index for future ships are examples of such IMO actions. The impacts of black carbon (BC) emissions from shipping are now under review by the IMO, with a particular focus on the potential impacts of future Arctic shipping. <br>...
關鍵字: ship
出版: Copernicus Publications
ISSN: 1680-7316
來源: DOAJ
System ID: 414391
193326
電子期刊
Halaši Tibor J., and Matavulj Milan N., and Malović Biljana M., and Kalamković Snežana S., and Halaši Ruža J., and Miljanović Branko M.
Fish is today one of the most important commercial material. In our market as in the world market they are present in fresh and manufactured products. Fish products always have some risk. They could be contaminated with dangerous chemicals and biological contaminants. From biological originated polutions Aflatoxin and other Mycotoxins are very dangerous. The contamination starts in fish ponds, in canals and swamps. Also, the contamination occurs at storage and prepararation of fish materials. It...
關鍵字: fish
出版: Matica srpska
ISSN: 0352-4906
來源: DOAJ
System ID: 414390
193327
電子期刊
Ricardo Giesecke, and Alejandro Clement, and José Garcés-Vargas, and Jorge I Mardones, and Humberto E González, and Luciano Caputo, and Leonardo Castro
During 2010 several massive salp outbreaks of the Subantarctic species Ihlea magalhanica were recorded in the inner sea of Chiloé Island (ISCh, Southern Chile), affecting both phytoplankton abundance and salmon farmers by causing high fish mortality. First outbreaks were recorded during February 2010 when Ihlea magalhanica reached up to 654,000 ind m-3 close to the net pens in Maillen Island and consecutive outbreaks could be followed during March and from October to November 2010. One month pri...
關鍵字: sea
出版: Escuela de Ciencias del Mar, Facultad de Recursos Naturales, Pontificia Universidad Católica de Valparaíso
ISSN: 0718-560X
來源: DOAJ
System ID: 414389
193328
電子期刊
B. J. Murray, and A. E. Haddrell, and S. Peppe, and J. F. Davies, and J. P. Reid, and D. O'Sullivan, and H. C. Price, and R. Kumar, and R. W. Saunders, and J. M. C. Plane, and N. S. Umo, and T. W. Wilson
Iodine oxide particles are known to nucleate in the marine boundary layer where gas phase molecular iodine and organoiodine species are produced by macroalgae. These ultra-fine particles may then grow through the condensation of other materials to sizes where they may serve as cloud condensation nuclei. There has been some debate over the chemical identity of the initially nucleated particles. In laboratory simulations, hygroscopic measurements have been used to infer that they are composed of i...
關鍵字: marine
出版: Copernicus Publications
ISSN: 1680-7316
來源: DOAJ
System ID: 414388
193329
電子期刊
Mohamed Khaldoun Badawy, and Dheeshana Sayakkarage, and Mehmet Ozmen
Background The large number of diagnostic procedures undertaken in emergency departments (ED) is vital to the early diagnosis and treatment of patients. The use of ionising radiation in diagnosis adds a lifetime attributable risk (LAR) of cancer depending on the region imaged, the frequency of imaging, and dose per exposure. Aims This pilot study aims to assess the degree of radiation awareness amongst ED doctors at major metropolitan and regional health services in Australia, in terms of t...
關鍵字: pilot
出版: Australasian Medical Journal pty ltd.
ISSN: 1836-1935
來源: DOAJ
System ID: 414387
193330
電子期刊
Salgado-Maldonado Guillermo, and Matamoros Wilfredo A., and Kreiser Brian R., and Caspeta-Mandujano Juan Manuel, and Mendoza-Franco Edgar F.
This paper provides the first report of the invasive Asian fish tapeworm, Bothriocephalus acheilognathi Yamaguti, 1934, in Honduras. The cestode was found in Profundulus portillorum (Cyprinodontiformes: Profundulidae), which represents a new host record, and which is a member of a genus faced with a variety of conservation challenges, now potentially complicated by the presence of this pathogenic cestode. Nearly complete sequence data from the ITS-1 5.8S and ITS-2 regions corroborate the determi...
關鍵字: fish
出版: EDP Sciences
ISSN: 1252-607X
來源: DOAJ
System ID: 414386
193331
電子期刊
Patrícia Alves da Silva, and David Augusto Reynalte-Tataje, and Evoy Zaniboni-Filho
This study aims to determine the importance of different environments of the Ligeiro River (upper Uruguay River, Brazil) in fish reproduction. For this purpose, three environments (sampling sites) were selected: rapids, a pool, and the mouth of the Ligeiro River. Ichthyoplankton, zooplankton, and benthos were sampled six times per month from September, 2006 to March, 2007. Zooplankton and ichthyoplankton samples were collected early in the evening with plankton nets (64 µm and 500 µm, respective...
關鍵字: fish
出版: Sociedade Brasileira de Ictiologia
ISSN: 1679-6225
來源: DOAJ
System ID: 414385
193332
電子期刊
Takayuki eFujiwara, and Yu eKanesaki, and Shunsuke eHirooka, and Shunsuke eHirooka, and Atsuko eEra, and Atsuko eEra, and Nobuko eSumiya, and Nobuko eSumiya, and Hirofumi eYoshikawa, and Hirofumi eYoshikawa, and Kan eTanaka, and Kan eTanaka, and Shin-ya eMiyagishima, and Shin-ya eMiyagishima, and Shin-ya eMiyagishima
The unicellular red alga Cyanidioschyzon merolae is a model organism for studying the basic biology of photosynthetic organisms. The C. merolae cell is composed of an extremely simple set of organelles. The genome is completely sequenced. Gene targeting and a heat-shock inducible gene expression system has been recently established. However, a conditional gene knockdown system has not been established, which is required for the examination of function of genes that are essential to cell viabilit...
關鍵字: alga
出版: Frontiers Media S.A.
ISSN: 1664-462X
來源: DOAJ
System ID: 414384
193333
電子期刊
Agustín Ferrando, and Nuria Mendez
The Estero de Urías coastal lagoon is subjected to several anthropogenic activities and has been characterized since 1997 through the study of benthic fauna. We analyzed the spatial and temporal distribution of annelids and their relationships with environmental variables (depth, sediment temperature, grain size and organic matter) in order to determine the current degree of perturbation. Density, species richness, diversity, dominance, biomass, and the application of classification and ordinati...
關鍵字: coastal
出版: Consejo Superior de Investigaciones Científicas
ISSN: 0214-8358
來源: DOAJ
System ID: 414383
193334
電子期刊
C. Zell, and J.-H. Kim, and M. Balsinha, and D. Dorhout, and C. Fernandes, and M. Baas, and J. S. Sinninghe Damsté
Branched glycerol dialkyl glycerol tetraethers (brGDGTs), which are thought to be transported from soil to marine sediment by rivers, have been used to reconstruct the mean annual air temperature (MAAT) and soil pH of the drainage basin using the methylation index of branched tetraethers (MBT, recently refined as MBT') and cyclization index of branched tetraethers (CBT) from coastal marine sediment records. In this study, we trace the brGDGTs from source to sink in the Tagus River basin, the lon...
關鍵字: coastal
出版: Copernicus Publications
ISSN: 1726-4170
來源: DOAJ
System ID: 414382
193335
電子期刊
M. Shohidullah Miah
Hilsa (Tenualosa ilisha Hamilton) as a single species accounts 12% for more than half of the total marine catches. About 2% of the entire population of the country is directly or indirectly engaged with Hilsa fishing. Hilsa has a wide geographical distribution in Asia from the Persian Gulf to the South China Sea. Particularly large stocks are found in Upper Bay of Bengal (BoB) region sustained by the large river systems. The global Hilsa catch is reported 75% from Bangladesh water, 15% from Myan...
關鍵字: fishery
出版: Elsevier
ISSN: 2212-0947
來源: DOAJ
System ID: 414381
193336
電子期刊
Christian Robert Voolstra, and David John Miller, and Mark A Ragan, and Ary eHoffmann, and Ove eHoegh-Guldberg, and David eBourne, and Eldon eBall, and Hua eYing, and Sylvain eForet, and Shunichi eTakahashi, and Karen Dawn Weynberg, and Madeleine JH van Oppen, and Kathy eMorrow, and Cheong Xin eChan, and Nela eRosic, and William eLeggat, and Susanne eSprungala, and Michael eImelfort, and Gene W Tyson, and Karin eKassahn, and Petra eLundgren, and Roger eBeeden, and Timothy eRavasi, and Michael eBerumen, and Eva eAbel, and Theresa eFyffe
Human-induced environmental changes have been linked directly with loss of biodiversity. Coral reefs, which have been severely impacted by anthropogenic activities over the last few decades, exemplify this global problem and provide an opportunity to develop research addressing key knowledge gaps through ‘omics’-based approaches. While many stressors, e.g. global warming, ocean acidification, overfishing and coastal development have been identified, there is an urgent need to understand how cora...
關鍵字: coral
出版: Frontiers Media S.A.
ISSN: 2296-7745
來源: DOAJ
System ID: 414380
193337
電子期刊
Jakub Hospodka
Short article dissertates about Satellite navigation systems based on Doppler shift. Discussed are advantages and disadvantages of such systems especially in connection with aviation. In last part are mentioned nowadays satellite navigation systems based on Doppler shift effect.
關鍵字: navigation
出版: Czech Technical University in Prague - Central Library
ISSN: 1805-7578
來源: DOAJ
System ID: 414379
193338
電子期刊
Kęstutis Skrupskelis
Among longest freely flowing salmon and sea trout migration routes in Europe, few remains in Lithuania. Data collected from Lithuanian rivers during 1999-2010 showed that catadromous smolt migration usually takes place from end of March to mid of May. Intensity of migration mostly depends on water level and temperature. In general, catadromous migration can last from 2 to 6 weeks, but in rivers of the Baltic Sea region the main run takes only 1-3 weeks starting with water temperature +4,8 and en...
關鍵字: salmon
出版: Frontiers Media S.A.
ISSN: 2296-7745
來源: DOAJ
System ID: 414378
193339
電子期刊
Nathan A Ahlgren, and Gabrielle eRocap
Marine Synechococcus is a globally significant genus of cyanobacteria that is comprised of multiple genetic lineages or clades. These clades are thought to represent ecologically distinct units, or ecotypes. Because multiple clades often co-occur together in the oceans, Synechococcus are ideal microbes to explore how closely related bacterial taxa within the same functional guild of organisms coexist and partition marine habitats. Here we perform multi-locus sequencing of cultured strains to con...
關鍵字: marine
出版: Frontiers Media S.A.
ISSN: 1664-302X
來源: DOAJ
System ID: 414377
193340
電子期刊
A. K. L. Jenkins, and P. M. Forster, and L. S. Jackson
The marine-cloud brightening geoengineering technique has been suggested as a possible means of counteracting the positive radiative forcing associated with anthropogenic atmospheric CO<sub>2</sub> increases. The focus of this study is to quantify the albedo response to aerosols injected into marine stratocumulus cloud from a point source at different times of day. We use a cloud-resolving model to investigate both weakly precipitating and non-precipitating regimes. Injection into both regimes i...
關鍵字: marine
出版: Copernicus Publications
ISSN: 1680-7316
來源: DOAJ
System ID: 414376
193341
電子期刊
E. M. Jones, and M. E. Baird, and M. Mongin, and J. Parslow, and J. Skerratt, and J. Lovell, and N. Margvelashvili, and R. J. Matear, and K. Wild-Allen, and B. Robson, and F. Rizwi, and P. Oke, and E. King, and T. Schroeder, and A. Steven, and J. Taylor
Skillful marine biogeochemical (BGC) models are required to understand a range of coastal and global phenomena such as changes in nitrogen and carbon cycles. The refinement of BGC models through the assimilation of variables calculated from observed in-water inherent optical properties (IOPs), such as phytoplankton absorption, is problematic. Empirically derived relationships between IOPs and variables such as chlorophyll-a concentration (Chl <i>a</i>), total suspended solids (TSS) and coloured ...
關鍵字: marine
出版: Copernicus Publications
ISSN: 1726-4170
來源: DOAJ
System ID: 414375
193342
電子期刊
Tatsuhiko eHoshino, and Yuki eMorono, and Takeshi eTerada, and Hiroyuki eImachi, and Timothy G Ferdelman, and Fumio eInagaki
Subseafloor sedimentary environments harbor remarkably diverse microbial communities. However, it remains unknown if the deeply buried fossils in these sediments play ecological roles in deep microbial habitats, or whether the microbial communities inhabiting such fossils differ from those in the surrounding sediment matrix. Here we compare the community structures of subseafloor microbes in coldwater coral carbonates (Madrepora oculata and Lophelia pertusa) and the clay matrix. Samples were obt...
關鍵字: coral
出版: Frontiers Media S.A.
ISSN: 1664-302X
來源: DOAJ
System ID: 414374
193343
電子期刊
Georg M Kerbler, and Zuzana eNedelska, and Zuzana eNedelska, and Jurgen eFripp, and Jan eLaczó, and Jan eLaczó, and Martin eVyhnalek, and Martin eVyhnalek, and Jiri eLisy, and Adam Scott Hamlin, and Stephen E Rose, and Jakub eHort, and Jakub eHort, and Elizabeth J Coulson
The basal forebrain degenerates in Alzheimer’s disease (AD) and this process is believed to contribute to the cognitive decline observed in AD patients. Impairment in spatial navigation is an early feature of the disease but whether basal forebrain dysfunction in AD is responsible for the impaired navigation skills of AD patients is not known. Our objective was to investigate the relationship between basal forebrain volume and performance in real space as well as computer-based navigation paradi...
關鍵字: navigation
出版: Frontiers Media S.A.
ISSN: 1663-4365
來源: DOAJ
System ID: 414373
193344
電子期刊
Tim Stojanovic, and Hilda M. McNae, and Paul Tett, and Tavis W. Potts, and J Reis, and Hance D. Smith, and Iain Dillingham
We evaluate whether society can adequately be conceptualized as a component of social-ecological systems, given social theory and the current outputs of systems-based research. A mounting critique from the social sciences posits that resilience theory has undertheorized social entities with the concept of social-ecological systems. We trace the way that use of the term has evolved, relating to social science theory. Scientometic and network analysis provide a wide range of empirical data abou...
關鍵字: coastal
出版: Resilience Alliance
ISSN: 1708-3087
來源: DOAJ
System ID: 414372
193345
電子期刊
A. ZENETOS, and E. MERIC, and M. VERLAQUE, and P. GALLI, and C.F. BOUDOURESQUE, and A. GIANGRANDE, and M.E. CINAR, and M. BILECENOGLU
The present work is an update of the annotated list (ZENETOS et al., 2006) based on literature up to April 2008. Emphasis is given to ecofunctional/taxonomic groups poorly addressed in the annotated list, such as the foraminiferan and parasites, while macrophytes are critically reviewed following the CIESM Atlas (VERLAQUE et al., in press). Moreover, in this update the bio-geographic area addressed includes the Sea of Marmara. The update yields a further 175 alien species in the Mediterranean b...
關鍵字: marine
出版: Hellenic Centre for Marine Research
ISSN: 1108-393X
來源: DOAJ
System ID: 414371
193346
電子期刊
Mats Meriste, and Kalle Kirsimäe
We studied reed bed development in Matsalu wetland and the Kasari River delta, Estonia, since the late 18th century using historical schemes, topographical maps and aerial photographs. Our aim was to understand the mechanisms controlling reed distribution in Matsalu wetland, the largest coastal wetland of the eastern Baltic Sea occupying an area of about 25 km2. Natural development of the reed bed in Matsalu Bay and the Kasari delta is mainly controlled by shoreline displacement due to post-glac...
關鍵字: sea
出版: Estonian Academy Publishers
ISSN: 1736-4728
來源: DOAJ
System ID: 414370
193347
電子期刊
Suhas Shetye, and Babula Jena, and Rahul Mohan
The seasonality of carbon dioxide partial pressure (pCO2), air-sea CO2 fluxes and associated environmental parameters were investigated in the Antarctic coastal waters. The in-situ survey was carried out from the austral summer till the onset of winter (January 2012, February 2010 and March 2009) in the Enderby Basin. Rapid decrease in pCO2 was evident under the sea-ice cover in January, when both water column and sea-ice algal activity resulted in the removal of nutrients and dissolved inorgani...
關鍵字: coastal
出版: Elsevier
ISSN: 1674-9871
來源: DOAJ
System ID: 414369
193348
電子期刊
Francoise Cavada-Blanco, and Ainhoa L. Zubillaga, and Carolina Bastidas
Phytoplankton drives primary productivity in marine pelagic systems. This is also true for the oligotrophic waters in coral reefs, where natural and anthropogenic sources of nutrients can alter pelagic trophic webs. In this study, microphytoplankton assemblages were characterized for the first time in relation to expected coral spawning dates in the Caribbean. A hierarchical experimental design was used to examine these assemblages in Los Roques archipelago, Venezuela, at various temporal and sp...
關鍵字: coral
出版: PeerJ Inc.
ISSN: 2167-8359
來源: DOAJ
System ID: 414368
193349
電子期刊
A. Canion, and J. E. Kostka, and T. M. Gihring, and M. Huettel, and J. E. E. van Beusekom, and H. Gao, and G. Lavik, and M. M. M. Kuypers
No abstract available.
關鍵字: marine
出版: Copernicus Publications
ISSN: 1726-4170
來源: DOAJ
System ID: 414367
193350
電子期刊
Thaís Nacif de Souza, and Ricardo Pacheco Terra, and Vicente de Paulo Santos de Oliveira
<em>Globalized world is marked by agility of connections related to goods and services’ circulation, composing a net in which ports are essential elements (CUNHA et al., 2007). Port activity directly impacts nearby environment (PORTO &amp; TEIXEIRA, 2002). Once ports are installed in coastal areas, they also affect fishery activities in their influence area. The implementation of the Açu Port Complex will promote an expressive socioenvironmental change in its vicinity, mainly interfering with th...
關鍵字: fishery
出版: Essentia Editora
ISSN: 1981-6197
來源: DOAJ
System ID: 414366