過濾條件已變更

目前顯示的是舊的搜尋結果,重新按下搜尋按鈕以套用新的過濾條件

197251
電子期刊
H. Herrera-Cervantes, and S. E. Lluch-Cota, and D. B. Lluch-Cota, and G. Gutiérrez-de-Velasco
Interannual correlation between satellite-derived sea surface temperature (SST) and surface chlorophyll <i>a</i> (Chl <i>a</i>) are examined in the coastal upwelling zone off Punta Eugenia on the west coast of the Baja California Peninsula, an area than has been identified as having intense biological productivity and oceanographic transition between midlatitude and tropical ocean conditions. We used empirical orthogonal functions (EOF) analysis separately and jointly on the two fields from 1997...
關鍵字: sea
出版: Copernicus Publications
ISSN: 1812-0784
來源: DOAJ
System ID: 418369
197252
電子期刊
Richard Allen White III, and Richard Allen White III, and Amy M Chan, and Gregory S Gavelis, and Brian S Leander, and Brian S Leander, and Allyson eBrady, and Greg F Slater, and Darlene S Lim, and Darlene S Lim, and Curtis A Suttle, and Curtis A Suttle, and Curtis A Suttle, and Curtis A Suttle
Modern microbialites are complex microbial communities that interface with abiotic factors to form carbonate-rich organosedimentary structures whose ancestors provide the earliest evidence of life. Past studies primarily on marine microbialites have inventoried diverse taxa and metabolic pathways, but it is unclear which of these are members of the microbialite community and which are introduced from adjacent environments. Here we control for these factors by sampling the surrounding water and n...
關鍵字: harbor
出版: Frontiers Media S.A.
ISSN: 1664-302X
來源: DOAJ
System ID: 418368
197253
電子期刊
Roberto Danovaro, and Roberto Danovaro, and Laura Carugati, and Marco Berzano, and Abigail E. Cahill, and Abigail E. Cahill, and Susana Carvalho, and Anne CHENUIL, and Cinzia Corinaldesi, and Sonia Cristina, and Sonia Cristina, and Romain R.DAVID DAVID, and Antonio Dell'Anno, and Nina DZHEMBEKOVA, and Esther Garcés, and Josep M Gasol, and Priscila Goela, and Priscila Goela, and Jean-Pierre FERAL, and Isabel Ferrera, and Rodney Forster, and Andrey A. Kurekin, and Eugenio Rastelli, and Veselka Marinova, and Peter I. Miller, and Snejana Moncheva, and Alice Newton, and John Kenneth Pearman, and Sophie Genevieve Pitois, and Albert Renè, and Naiara Rodriguez-Ezpeleta, and Vincenzo Saggiomo, and Stefan G.H. Simis, and Stefan G.H. Simis, and Kremena Stefanova, and Christian Wilson, and Marco Lo Martire, and Marco Lo Martire, and Silvestro Greco, and Sabine Cochrane, and Angel Borja
Marine environmental monitoring has tended to focus on site-specific methods of investigation. These traditional methods have low spatial and temporal resolution and are relatively labour intensive per unit area/time that they cover. To implement the Marine Strategy Framework Directive (MSFD), European Member States are required to improve marine monitoring and design monitoring networks. This can be achieved by developing and testing innovative and cost-effective monitoring systems, as well as ...
關鍵字: marine
出版: Frontiers Media S.A.
ISSN: 2296-7745
來源: DOAJ
System ID: 418367
197254
電子期刊
Hyung-Suk Han
The indoor noise of a ship is usually determined using the A-weighted sound pressure level. However, in order to better understand this phenomenon, evaluation parameters that more accurately reflect the human sense of hearing are required. To find the level of the satisfaction index of the noise inside a naval vessel such as “Loudness” and “Annoyance”, psycho-acoustic evaluation of various sound recordings from the naval vessel was performed in a laboratory. The objective of this paper is to dev...
關鍵字: naval
出版: Elsevier
ISSN: 2092-6782
來源: DOAJ
System ID: 418366
197255
電子期刊
Rafaela Torres Pereira, and Ariádine Cristine Almeida, and Gustavo Monteiro Teixeira, and Alessandra Angélica de Pádua Bueno, and Adilson Fransozo
Abstract The goal of this study was to evaluate the reproductive investment (RI) and the fecundity of the shrimp Nematopalaemon schmitti (Holthuis, 1950), caught by trawling in the southeastern Brazilian coast in 2008, 2009 and 2011. The carapace length (CL) of ovigerous females was measured and the development stage of their ovaries and embryos were analyzed. A significant relationship was observed between the female body and embryo weights (Linear regression: r² = 0.26, F = 20.77, P < 0.0001, ...
關鍵字: shrimp
出版: Sociedade Brasileira de Carcinologia
ISSN: 0104-6497
來源: DOAJ
System ID: 418365
197256
電子期刊
S. R. M. Tabugo, and D.L. Manzanares, and A.D. Malawani
Coral reef communities are considered as the most diverse marine ecosystems that provide food, shelter and protection to marine organisms. It provides many important benefits to humans but often a subject to impairment through human activities. Cascading human influences and climate change appeared as a reason behind its decline. Thus, coral reef monitoring methods are substantial. This study utilized Coral Point Count with Excel extensions (CPCe) software, as a means to increase efficiency of c...
關鍵字: reef
出版: International Academy of Ecology and Environmental Sciences
ISSN: 2220-721X
來源: DOAJ
System ID: 418364
197257
電子期刊
FS Farnese, and JA Oliveira, and FS Lima, and GA Leão, and GS Gusman, and LC Silva
Specimens of Pistia stratiotes were subjected to five concentrations of arsenic (As) for seven days. Growth, As absorption, malondialdehyde (MDA) content, photosynthetic pigments, enzymatic activities, amino acids content and anatomical changes were assessed. Plant arsenic accumulation increased with increasing metalloid in the solution, while growth rate and photosynthetic pigment content decreased. The MDA content increased, indicating oxidative stress. Enzymatic activity and amino acids conte...
關鍵字: aquatic
出版: Instituto Internacional de Ecologia
ISSN: 1519-6984
來源: DOAJ
System ID: 418363
197258
電子期刊
Bárbara Pereira Christofaro Silva, and Marx Leandro Naves Silva, and Pedro Velloso Gomes Batista, and Lucas Machado Pontes, and Elias Frank Araújo, and Nilton Curi
ABSTRACT Monitoring water erosion and the factors that control soil and water loss are essential for soil conservation planning. The objective of this study was to evaluate soil and water losses by water erosion under natural rainfall in eucalyptus plantations established in 2001 (EF2), and 2004 (EF1), native forest (NF) and bare soil (BS), during the period of 2007 to 2012; and to determine the USLE factors: rain erosivity (R), erodibility (K) of a Red Argisol and the cover-management factor (C...
關鍵字: pilot
出版: Universidade Federal de Lavras
ISSN: 1413-7054
來源: DOAJ
System ID: 418362
197259
電子期刊
Kholichev S. N., and Menshikov V. I. , and Penkovskaya K. V.
The study of structures' common features and dynamics of the technical object tuning circuit performing automatic adjustment of safe navigation options has been conducted for the first time in the theory of ergative systems. The research of the structure and process of ergative system functioning including an automatic control system with the option of safe navigation conditions has been fulfilled. The function of signals' selection performing optimal control law reconfiguration of the mentioned...
關鍵字: navigation
出版: Murmansk State Technical University
ISSN: 1560-9278
來源: DOAJ
System ID: 418361
197260
電子期刊
Imad Afyouni, and Cyril Ray, and Christophe Claramunt
This paper surveys indoor spatial models developed for research fields ranging from mobile robot mapping, to indoor location-based services (LBS), and most recently to context-aware navigation services applied to indoor environments. Over the past few years, several studies have evaluated the potential of spatial models for robot navigation and ubiquitous computing. In this paper we take a slightly different perspective, considering not only the underlying properties of those spatial models, but...
關鍵字: navigation
出版: University of Maine
ISSN: 1948-660X
來源: DOAJ
System ID: 418360
197261
電子期刊
Graham G. Pegg, and Billy Sinclair, and Leica Briskey, and William J. Aspden
Planktonic larvae were captured above a shallow coral reef study site on the Great Barrier Reef (GBR) around spring-summer new moon periods (October-February) using light trap or net capture devices. Larvae were identified to the genus or species level by comparison with a phylogenetic tree of tropical marine fish species using mtDNA HVR1 sequence data. Further analysis showed that within-species HVR1 sequence variation was typically 1-3%, whereas between-species variation for the same genus ran...
關鍵字: fish
出版: Consejo Superior de Investigaciones Científicas
ISSN: 0214-8358
來源: DOAJ
System ID: 418359
197262
電子期刊
Uriel Fernando Carreño-Sayago
In this review we explore different opportunities to use a cheap natural material for removing and retention of heavy metals from polluted waters by waste of different processes. Two research systems will be addressed: the first through a material known as zeolite or more generally porous  luminosilicates, which may be synthesized or extracted from the mines of clays and minerals, being used in its natural state or after modification processes and doping. The other mechanism is bioremediation th...
關鍵字: aquatic
出版: Universidad Pedagógica y Tecnológica de Colombia
ISSN: 1900-771X
來源: DOAJ
System ID: 418358
197263
電子期刊
Brian Wade Jamandre, and Jean Ronald Joseph
Even with the aide of modern technology, the search for cadaver or human remains underwater is still assisted by sniffer dogs mainly because of their superior sense of olfaction. However, dogs rely on volatile organic compounds in the air and that this may constraint their ability when searching for submerged cadavers. On the other hand, it has long been recognized that fishes use olfaction to sample odors from their surroundings to accomplish a task and are capable of acquiring new skills throu...
關鍵字: aquatic
出版: Frontiers Media S.A.
ISSN: 2296-7745
來源: DOAJ
System ID: 418357
197264
電子期刊
J. Lewandowski, and K. Meinikmann, and F. Pöschke, and G. Nützmann, and D. O. Rosenberry
Submarine groundwater discharge (SGD) and its role in marine nutrient cycling are well known since the last decade. The freshwater equivalent, lacustrine groundwater discharge (LGD), is often still disregarded, although first reports of LGD are more than 50 years old. We identify nine different reasons why groundwater has long been disregarded in both freshwater and marine environments such as invisibility of groundwater discharge, the size of the interface and its difficult accessibility. Altho...
關鍵字: submarine
出版: Copernicus Publications
ISSN: 2199-8981
來源: DOAJ
System ID: 418356
197265
電子期刊
Maroof Khalaf, and Mohamed Abdallah
The spatial distribution of 50 ornamental fish species from shallow water habitats on coral reefs were investigated using visual census techniques, between latitudes 11&minus;29&deg;N in the Red Sea, in Jordan, Egypt, Saudi Arabia, and Yemen, and in the adjacent Gulf of Aden in Djibouti. One hundred eighteen transects (each 100&times;5 m) were examined in 29 sites (3&minus;8 sites per country). A total of 522,523 fish individuals were counted during this survey, with mean abundance of 4428.2 &pl...
關鍵字: coral
出版: Pensoft Publishers
ISSN: 1313-2970
來源: DOAJ
System ID: 418355
197266
電子期刊
Zen Faulkes
Many decapod crustaceans perform escape tailflips with a neural circuit involving giant interneurons, a specialized fast flexor motor giant (MoG) neuron, populations of larger, less specialized fast flexor motor neurons, and fast extensor motor neurons. These escape-related neurons are well described in crayfish (Reptantia), but not in more basal decapod groups. To clarify the evolution of the escape circuit, I examined the fast flexor and fast extensor motor neurons of white shrimp (Litopenaeus...
關鍵字: shrimp
出版: PeerJ Inc.
ISSN: 2167-8359
來源: DOAJ
System ID: 418354
197267
電子期刊
Clara S Chan, and Clara S Chan, and Sean M McAllister, and Anna H Leavitt, and Brian T. Glazer, and Sean T Krepski, and David eEmerson
Microbes form mats with architectures that promote efficient metabolism within a particular physicochemical environment, thus studying mat structure helps us understand ecophysiology. Despite much research on chemolithotrophic Fe-oxidizing bacteria, Fe mat architecture has not been visualized because these delicate structures are easily disrupted. There are striking similarities between the biominerals that comprise freshwater and marine Fe mats, made by Beta- and Zetaproteobacteria, respectivel...
關鍵字: marine
出版: Frontiers Media S.A.
ISSN: 1664-302X
來源: DOAJ
System ID: 418353
197268
電子期刊
Janice Pringle, and Michael Melczak, and Arnie Aldridge, and Margie Snyder, and Randall Smith
Objectives: To determine whether patients who received Medication Therapy Management (MTM) from community pharmacists using a brief scale to measure Therapeutic Alliance (i.e., MTM + TA) would show better medication adherence than patients who received MTM without use of the TA scale (MTM only). Design: Quasi-experimental, using a direct intervention group (MTM + TA) and a comparison group of randomly selected claims records from patients who received only the MTM service (MTM only). We used...
關鍵字: pilot
出版: University of Minnesota Libraries Publishing
ISSN: 2155-0417
來源: DOAJ
System ID: 418352
197269
電子期刊
G. RIGOS, and V. ZONARAS, and X. NIKOLOUDAKI, and E. COTOU, and M. HENRY, and I. VARO, and M. ALEXIS
The distribution and depletion profile of sulfadiazine (SDZ) were investigated in gilthead sea bream (Sparus aurata) fed on fish oil (FO) or plant oil-based (PO) diets. Fish averaging 230 g were given medicated feed containing 25 mg SDZ kg-1 fish for 5 days at 24-26oC. Blood and muscle plus skin were sampled on days 1, 3, 5, 6, 8 and 9.  Differences in plasma and fillet SDZ levels between the two groups were statistically insignificant. The maximum drug concentrations in plasma were 3.2 ± 1.9 μg...
關鍵字: sea
出版: Hellenic Centre for Marine Research
ISSN: 1108-393X
來源: DOAJ
System ID: 418351
197270
電子期刊
Bhanoo Saulick, and Vishwakalyan Bhoyroo, and Nadeem Nazurally, and Bhanooduth Lalljee
Concentrations of heavy metals arsenic, cadmium, lead and mercury and trace elements chromium, copper, nickel and zinc were tested in the muscle tissue of four commercial edible lethrinids fish species from different region of Mauritius. Sky emperor (Lethrinus mahsena) was collected from coastal regions as well as offshore regions (banks) for this study. Blackspot emperor (Lethrinus harak) and spangled emperor (Lethrinus nebulosus) were also studied for their popularity in the fish market. Condi...
關鍵字: fish
出版: PAGEPress Publications
ISSN: 2239-7132
來源: DOAJ
System ID: 418350
197271
電子期刊
Patricia N. Pochelon, and Antonina dos Santos, and A. Miguel P. Santos, and Henrique Queiroga
A strong understanding of larval distribution and abundance is of major value in delineating the location and size of a breeding population of deep-sea species such as Monodaeus couchii. In this study, vertical distribution of the larvae of a brachyuran crab, M. couchii, was assessed during two week-long cruises conducted at the end of January 2006 and 2007 off the South Coast of Portugal. Larvae were collected by oblique plankton hauls with a Longhurst-Hardy Plankton Recorder from the surface t...
關鍵字: offshore
出版: Consejo Superior de Investigaciones Científicas
ISSN: 0214-8358
來源: DOAJ
System ID: 418349
197272
電子期刊
Oana Georgiana Dorojan, and victor Cristea, and Sandita Placinta, and Stefan Petrea
Obiectivul acestui experiment a fost de a evalua influența unor phytobiotics asupra performanțelor de creștere a sturionilor stelat ( A. stellatus ). Au existat două variante experimentale: V1 - cimbru și V2 - catina. Peștele utilizat în acest experiment au fost de un an si patru luni, cu o greutate inițială medie de 122.78 ± 31.60 g / pește (V1), respectiv 121.21 ± 32,54 g / pește (V2). Cele phytobiotics folosite, cimbru ( Thymus vulgaris ) și cătină ( Hippophae rhamnoides ), au fost încorporat...
關鍵字: aquaculture
出版: Agroprint Timisoara
ISSN: 1841-9364
來源: DOAJ
System ID: 418348
197273
電子期刊
J. C. Orr, and J.-M. Epitalon, and J.-P. Gattuso
Marine scientists often use two measured or modeled carbonate system variables to compute others. These carbonate chemistry calculations, based on well-known thermodynamic equilibria, are now available in a dozen public packages. Ten of those were compared using common input data and the set of equilibrium constants recommended for best practices. Current versions of all 10 packages agree within 0.2 μatm for <i>p</i>CO<sub>2</sub>, 0.0002 units for pH, and 0.1 μmol kg<sup>−1</su...
關鍵字: ocean
出版: Copernicus Publications
ISSN: 1726-4170
來源: DOAJ
System ID: 418347
197274
電子期刊
Patrick Tobias Moss, and W. Roland Gehrels, and S. Louise Callard
A high-resolution pollen and micro-charcoal (>5 μm) record has been produced from a short sediment (50 cm) core recovered from a salt marsh in the Little Swanport Estuary, eastern Tasmania. This record suggests that there are four phases associated with the European settlement of the region. An initial phase from around 1830 to 1858 AD, which is similar to the previous Aboriginal period; a relatively low impact transitional phase from 1859 to 1898 AD; a rapid and marked deforestation period from...
關鍵字: coastal
出版: Frontiers Media S.A.
ISSN: 2296-701X
來源: DOAJ
System ID: 418346
197275
電子期刊
J. Gómez-Enri, and P. Villares, and M. Bruno, and M. Catalán
The exponential increase in the use of altimeter data in oceanographic studies in the past two decades has improved the knowledge of the processes that govern the interaction between the ocean and the atmosphere. One of these processes is the response of the ocean to atmospheric pressure variations, which has been deeply analysed in the past. That response is based on the isostatic assumption used to establish a standard correction for altimetric purposes, the Inverse Barometer Correction (...
關鍵字: ocean
出版: Copernicus Publications
ISSN: 0992-7689
來源: DOAJ
System ID: 418345
197276
電子期刊
Demet Karnak, and Aydin Çiledag, and Koray Ceyhan, and Çetin Atasoy, and Serdar Akyar, and Oya Kayacan
Background: Electromagnetic navigation bronchoscopy (EMN) is a novel technology which allows localizing peripheral lung lesions and mediastinal lymph nodes for sampling and thus increasing diagnostic yield of Flexible Bronchoscopy. Objectives: A prospective study was conducted to investigate the diagnostic yield of EMN with lower average fiducial target registration error (AFTRE) and rapid on-site evaluation (ROSE). Methods: Consecutive patients with peripheral lung lesion (PL) or enlarged media...
關鍵字: navigation
出版: Wolters Kluwer Medknow Publications
ISSN: 1817-1737
來源: DOAJ
System ID: 418344
197277
電子期刊
Felipe Nilvan Ferreira, and Edson Vieira Sampaio, and Janaina de Lima Silva, and José Claudio Epaminondas dos Santos, and Marcelo Mattos Pedreira
Trabalhos com larvas de peixes, sejam de cultivo ou ecológicos invariavelmente empregam o comprimento e o peso como parâmetros. Assim sendo, este experimento foi realizado com larvas de Lophiosilurus alexandri pacamã objetivando determinar algumas fontes de erros amostrais na medição do tamanho e do peso de larvas de peixes. Avaliou-se cinco possíveis fontes de erros. O primeiro foi o erro na medida dos comprimentos total e padrão, devido a acuidade de medição de dois observadores. O segundo, fo...
關鍵字: fish
出版: Eduem - Editora da Universidade Estadual de Maringá
ISSN: 1679-9283
來源: DOAJ
System ID: 418343
197278
電子期刊
Vanesa Paredes Zúñiga, and Ingrid Vargas Azofeifa, and María Consuelo Vargas Quintero, and Federico Arellano Hartig
Las técnicas hidrogeoquímicas constituyen una herramienta complementaria a la hidrogeología dado que permiten responder los interrogantes que se presentan en sistemas complejos, como es el caso de los acuíferos costeros, donde la salinidad normalmente asociada a procesos de intrusión salina puede obedecer también a la conjunción con otros aspectos hidroclimatológicos e hidrodinámicos. Con la aplicación de la hidrogeoquímica y las relaciones iónicasse evidencia que los procesos de salinización pr...
關鍵字: coastal
出版: Universidad de Medellín
ISSN: 1692-3324
來源: DOAJ
System ID: 418342
197279
電子期刊
José Luis Luque, and José Iannacone
The presence of four Monogenoidea parasitic on marine fishes from the central Peruvian coast is recorded. One of them, Anoplocotyloides chorrillensis (Monocotylidae) described from the gills of Rhinobatos planiceps (Rhinobatidae) is considered a new species. The three other species are: Caballerocotyla autralis Oliva, 1986 (Capsalidae); Callorhynchocotyle marplatensis Suriano & Incorvaia, 1982 (Hexabothriidae) and Anoplocotyloides papillatus (Doran, 1953) (Monocotylidae) parasitic on Sarda chili...
關鍵字: marine
出版: Instituto Oswaldo Cruz, Ministério da Saúde
ISSN: 0074-0276
來源: DOAJ
System ID: 418341
197280
電子期刊
Jerotić Stefan
Introduction: During the year 2014, a part of the population from Serbia was exposed to floods. After natural disasters and other types of extreme trauma, some people will be more affected by trauma than others. How women and men differ, in the symptoms that can manifest after the exposure to extreme trauma, is still an open question. Aim: To evaluate if there are differences in the severity of trauma-related symptom clusters between the sexes (re-experiencing, avoidance, negative cognitions and...
關鍵字: pilot
出版: University of Belgrade, Medical Faculty
ISSN: 0369-1527
來源: DOAJ
System ID: 418340
197281
電子期刊
Simoni Ramalho Ziober, and Andréa Bialetzki, and Lúcia Aparecida de Fátima Mateus
Researches on ichthyoplankton seems to be an important tool to identification of spawning areas and periods for freshwater fish. Ichthyoplankton was sampled monthly in the headwaters of the Cuiabá River, upper Paraguay River basin, (Mato Grosso State, Brazil), and in four of its tributaries, between November 2007 and March 2008, to evaluate the spatial and temporal distribution of fish eggs and larvae and the influence of regional and local variables on their distribution. In total, 22,067 eggs ...
關鍵字: fish
出版: Sociedade Brasileira de Ictiologia
ISSN: 1679-6225
來源: DOAJ
System ID: 418339
197282
電子期刊
AL Carmassi, and G Rondineli, and FC Ferreira, and FMS Braga
The aim of this work was to determine the composition of the fish assemblage of Passa Cinco stream and verify changes in their structure on the altitudinal gradient. Six samples were performed at five different sites in Passa Cinco stream (from the headwater, at order two, to its mouth, at order six), using an electric fishery equipment and gill nets in May, July, September and November of 2005 and January and March of 2006. The indices of Shannon's diversity, Pielou's evenness and Margalef's ri...
關鍵字: fish
出版: Instituto Internacional de Ecologia
ISSN: 1519-6984
來源: DOAJ
System ID: 418338
197283
電子期刊
S. Moreau, and H. Kaartokallio, and M. Vancoppenolle, and J. Zhou, and M. Kotovitch, and G. S. Dieckmann, and D.N. Thomas, and J.-L. Tison, and B. Delille
Abstract The objective of this study was to assess the O2 budget in the water under sea ice combining observations and modelling. Modelling was used to discriminate between physical processes, gas-specific transport (i.e., ice-atmosphere gas fluxes and gas bubble buoyancy) and bacterial respiration (BR) and to constrain bacterial growth efficiency (BGE). A module describing the changes of the under-ice water properties, due to brine rejection and temperature-dependent BR, was implemented in the ...
關鍵字: sea
出版: BioOne
ISSN: 2325-1026
來源: DOAJ
System ID: 418337
197284
電子期刊
Carla Bottari, and Stefano Urbini, and Marcello Bianca, and Maria D'Amico, and Marco Marchetti, and Francesco Pizzolo
<span style="font-size: small;"><p>In recent years, detailed geoarcheological investigations have been carried out to search for traces of the ancient Tindari harbor (north-east Sicily, Italy). A digital terrain model supported the hypothesis that 2,000 yr ago the Oliveri Basin was a suitable landing place that was protected from prevailing winds. This model was generated from uplift data, sea level changes, historical cartographic data and three-dimensional reconstruction of the sedimentary suc...
關鍵字: harbor
出版: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
ISSN: 1593-5213
來源: DOAJ
System ID: 418336
197285
電子期刊
Naglaa A. El-Naggar, and Hosny I. Emara, and Madelyn N. Moawad, and Yosry A. Soliman, and Abeer A.M. El-Sayed
This paper provides important information about the compositions and concentrations of polycyclic aromatic hydrocarbons in Alexandria’s coastal seawater during winter of 2015. By applying gas chromatographic technique using the FID detector, the determination of PAHs in seawater was used as a chemical signature to recognize various sources of PAHs pollutions. Concentrations were found to range between 13.4 and 6076 ng/L with a mean 991 ng/L; that exceeded the maximum admissible concentrations (2...
關鍵字: coastal
出版: Elsevier
ISSN: 1687-4285
來源: DOAJ
System ID: 418335
197286
電子期刊
Chien-Hui Yang, and Appukuttannair Biju Kumar, and Tin-Yam Chan
The commercial deep-sea caridean shrimp Heterocarpus gibbosus Spence Bate, 1888 has long been recorded from India and constitutes an important part of the catches in the context of the further development of deep-sea fisheries in India. A recent survey in some deep-sea fishing ports in southern India, however, revealed that all material previously reported as “H. gibbosus” is actually a misidentification of its closely related species H. chani Li, 2006, which has only recently ...
關鍵字: shrimp
出版: Pensoft Publishers
ISSN: 1313-2989
來源: DOAJ
System ID: 418334
197287
電子期刊
Selvaraj Kandasamy, and Bejugam Nagender Nath
The natural carbon cycle is immensely intricate to fully understand its sources, fluxes and the processes that are responsible for their cycling in different reservoirs and their balances on a global scale. Anthropogenic perturbations add another dimension to such a complex cycle. Therefore, it is necessary to update the global carbon cycle by combining both natural and anthropogenic sources, fluxes and sinks along the land-sea continuum to assess whether these terms are currently in balance or ...
關鍵字: sea
出版: Frontiers Media S.A.
ISSN: 2296-7745
來源: DOAJ
System ID: 418333
197288
電子期刊
Nihar R. Samal, and Wilfred M. Wollheim, and Shan Zuidema, and Robert J. Stewart, and Zaixing Zhou, and Madeleine M. Mineau, and Mark E. Borsuk, and Kevin H. Gardner, and Stanley Glidden, and Tao Huang, and David A. Lutz, and Georgia Mavrommati, and Alexandra M. Thorn, and Cameron P. Wake, and Matthew Huber
Accurate quantification of ecosystem services (ES) at regional scales is increasingly important for making informed decisions in the face of environmental change. We linked terrestrial and aquatic ecosystem process models to simulate the spatial and temporal distribution of hydrological and water quality characteristics related to ecosystem services. The linked model integrates two existing models (a forest ecosystem model and a river network model) to establish consistent responses to changing ...
關鍵字: aquatic
出版: Resilience Alliance
ISSN: 1708-3087
來源: DOAJ
System ID: 418332
197289
電子期刊
H. Cannaby, and M. D. Palmer, and T. Howard, and L. Bricheno, and D. Calvert, and J. Krijnen, and R. Wood, and J. Tinker, and C. Bunney, and J. Harle, and A. Saulter, and C. O'Neill, and C. Bellingham, and J. Lowe
Singapore is an island state with considerable population, industries, commerce and transport located in coastal areas at elevations less than 2 m making it vulnerable to sea level rise. Mitigation against future inundation events requires a quantitative assessment of risk. To address this need, regional projections of changes in (i) long-term mean sea level and (ii) the frequency of extreme storm surge and wave events have been combined to explore potential changes to coastal flood risk over th...
關鍵字: sea
出版: Copernicus Publications
ISSN: 1812-0784
來源: DOAJ
System ID: 418331
197290
電子期刊
Dubova O. L., and Bakholdina L. P. , and Shenderyuk V. V.
The results of studying dependencies of levels of polychlorinated biphenyls (PCBs) and chlorinated pesticides in the liver and muscles of the main commercial fish species of the Baltic Sea (sprat, herring, cod, flounder), the Vistula and the Curonian Bay (pike-perch, bream, roach) on the fishing area, season and fish species have been considered. Determination of PCBs and pesticides has been carried out in accordance with MVI MN 2352–2005 "Method for simultaneous determination of residual amount...
關鍵字: aquatic
出版: Murmansk State Technical University
ISSN: 1560-9278
來源: DOAJ
System ID: 418330
197291
電子期刊
Ronaldo Angelini, and Angelo Antonio Agostinho, and Luiz Carlos Gomes
Recently, there is an increasing perception that the ecosystem approach gives important insights to support fisheries stock assessment and management. This paper aims to quantify energy flows in the Itaipu Reservoir (Brazil) and to simulate increase of the fishing effort of some species, using Ecopath with Ecosim software, which could allow inferences on stability. Therefore, two steady-state Itaipu models were built (1983-87 and 1988-92). Results showed that: a) there are no differences between...
關鍵字: fishing
出版: Sociedade Brasileira de Ictiologia
ISSN: 1679-6225
來源: DOAJ
System ID: 418329
197292
電子期刊
Aydın Demirci
關鍵字: shrimp
出版: Ege University
ISSN: 1300-1590
來源: DOAJ
System ID: 418328
197293
電子期刊
Sedat Gönener, and Sabri Bilgin, and Ümit Yiğit
關鍵字: fish
出版: Ege University
ISSN: 1300-1590
來源: DOAJ
System ID: 418327
197294
電子期刊
Okan Akyol, and Tevfik Ceyhan, and Okan Ertosluk
關鍵字: fishing
出版: Ege University
ISSN: 1300-1590
來源: DOAJ
System ID: 418326
197295
電子期刊
Emerson CANAVERO, and Alessandro Lorenço JANUÁRIO, and Enilson Antônio SALLUM, and Pedro Duarte NOVAES, and Francisco Humberto NOCITI Jr.
Neste estudo avaliou-se histometricamente a ação local da calcitonina de salmão em defeitos ósseos provocados cirurgicamente em fêmur de ratos. As avaliações foram feitas aos 7, 14 e 21 dias após o ato cirúrgico. Não se observou diferenças estatísticas aos 7 dias, entretanto no período de 14 dias houve diferenças com maior formação óssea no grupo tratado. No período de 21 dias, em ambos os grupos, não foi possível diferenciar o tecido ósseo neoformado e o adjacente. Os resultados demonstraram, q...
關鍵字: salmon
出版: Universidade de São Paulo
ISSN: 1517-7491
來源: DOAJ
System ID: 418325
197296
電子期刊
Adrián Munguía-Vega, and Andrea Sáenz-Arroyo, and Ashley P. Greenley, and Jose Antonio Espinoza-Montes, and Stephen R. Palumbi, and Marisa Rossetto, and Fiorenza Micheli
Genetic diversity is crucial for the adaptation of exploited species like the pink abalone (Haliotis corrugata), faced with threats from climate change, overfishing and impacts associated with aquaculture production. While marine reserves are commonly used to mitigate risks to marine populations, the duration, size, location and larval connectivity needed for a reserve to help conserve genetic resources is still poorly understood. Here, we examine the effects of fishing, reserves, and restocking...
關鍵字: abalone
出版: Elsevier
ISSN: 2351-9894
來源: DOAJ
System ID: 418324
197297
電子期刊
Roger S. Wotton
Exopolymers (EPS) are produced by unicellular and multicellular organisms. They consist largely of polysaccharides that hydrate rapidly on contact with water and link to form gels. EPS have many uses: in attachment; in locomotion on substrata; as a protection against predators, pathogens and changes in physico-chemical conditions; as a means of overcoming the threat of desiccation; in preventing abrasion; and in feeding. When free of organisms, some EPS form loosely associated polymer gels that ...
關鍵字: aquatic
出版: Consejo Superior de Investigaciones Científicas
ISSN: 0214-8358
來源: DOAJ
System ID: 418323
197298
電子期刊
Mariana FILIPOVA-MARINOVA
The palynological method is one of the main biostratigraphic methods. Pollen analysis of marine sediments offers the possibility of obtaining long and presumably continuous records of coastal vegetation that are the source of plant microfossils found in the marine basins. Such sequences provide opportunity to develop complete and high-resolution records of terrestrial events. The stratigraphic subdivision of sediments from the western Black Sea area is based on qualitative interpretation of the ...
關鍵字: coastal
出版: „Ștefan cel Mare” University Press
ISSN: 1583-1469
來源: DOAJ
System ID: 418322
197299
電子期刊
Paolo Casale, and Daniela Freggi, and Fulvio Maffucci, and Sandra Hochscheid
Sea turtles show temperature-dependent sex determination (TSD) and information on sex ratios at different life stages is necessary both for population dynamics models for conservation and to shed light on the possible adaptive value of TSD. Adults represent the less abundant class of sea turtle populations and adult sex ratios at foraging grounds are very difficult to obtain. We first analysed biometric data of 460 juvenile and adult loggerhead sea turtles ranging from 60 to 97.5 cm curved carap...
關鍵字: sea
出版: Consejo Superior de Investigaciones Científicas
ISSN: 0214-8358
來源: DOAJ
System ID: 418321
197300
電子期刊
Thelma Aken’Ova, and Thomas Cribb, and Rodney Bray
Seven species of Pseudopecoeloides including five new are described from marine fishes in the waters off the coasts of Queensland, and West and South Australia. The new species are Pseudopecoeloides hickmani n. sp. from Pseudocaranx wrighti (Carangidae), P. lesteri n. sp. from Pseudocaranx dentex and Pseudocaranx wrighti, P. arripi n. sp. from Arripis georgianus (Arripidae), P. atherinomori n. sp. from Atherinonmorus ogilbyi (Atherinidae), P, hafeezullahi n. sp. from Trachurus novaezealandiae (C...
關鍵字: marine
出版: Pensoft Publishers
ISSN: 1313-2970
來源: DOAJ
System ID: 418320