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| Registros recuperados: 103 | |
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| Heral, Maurice. |
| In areas where oyster or mussel culture is very intensive, declines of growth rate and decreases of survival rate have occurred. For these reasons, plans have been proposed to regulate the cultivated biomasses in order to fit the carrying capacity of the different ecosystems (Heral et al 1990; Heral, 1991). In areas where new aquaculture of molluscs is beginning, oyster or mussel farmers need to know how large the extension of the culture could be and what the maximal densities should be in order to obtain the maximum economic benefit. Furthermore, as mollusc cultures are developed in coastal areas, they are very susceptible to changes in environmental conditions that can modify trophic relationships, or directly reduce growth rate, physiological... |
| Tipo: Text |
Palavras-chave: Oyster model; Analytical model; Bivalve molluscs culture; Models. |
| Ano: 1993 |
URL: http://archimer.ifremer.fr/doc/1993/publication-6104.PDF |
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| Vazquez-rodriguez, Marcos; Touratier, Franck; Lo Monaco, Claire; Waugh, D. W.; Padin, X. A.; Bellerby, R. G. J.; Goyet, Catherine; Metzl, Nicolas; Rios, Aida F.; Perez, Fiz F.. |
| Five of the most recent observational methods to estimate anthropogenic CO2 (C-ant) are applied to a high-quality dataset from five representative sections of the Atlantic Ocean extending from the Arctic to the Antarctic. Between latitudes 60 degrees N-40 degrees S all methods give similar spatial distributions and magnitude of C-ant. However, discrepancies are found in some regions, in particular in the Southern Ocean and Nordic Seas. The differences in the Southern Ocean have a significant impact on the anthropogenic carbon inventories. The calculated total inventories of C-ant for the Atlantic referred to 1994 vary from 48 to 67 Pg (10(15) g) of carbon, with an average of 54 +/- 8 Pg C, which is higher than previous estimates. These results, both the... |
| Tipo: Text |
Palavras-chave: Deep equatorial atlantic; Northern indian-ocean; Water mass ages; CO2; Sea; Transport; Increase; Tracers; Models. |
| Ano: 2009 |
URL: https://archimer.ifremer.fr/doc/00202/31313/29724.pdf |
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| Drouineau, Hilaire; Lobry, Jeremy; Bez, Nicolas; Travers-trolet, Morgane; Vermard, Youen; Gascuel, Didier. |
| In this introductory paper we highlight key questions that were discussed during the symposium on “Status, functioning and shifts in marine ecosystems” organized by the Association Française d’Halieutique (French Association for Fisheries Sciences, Montpellier, France, July 2015). This symposium illustrated that fisheries science is now working at multiple scales and on all dimensions of socio-ecosystems (ecological, political, sociological, and economic), with a great diversity of approaches and taking into account different levels of complexity while acknowledging diverse sources of uncertainty. We argue that we should go one step further and call for a protean fisheries science to address the deteriorated states of aquatic ecosystems caused by... |
| Tipo: Text |
Palavras-chave: EAFM; Fisheries management; Fisheries science; Marine resources; Models; Uncertainty. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00359/46990/46921.pdf |
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| De Mey-frémaux, Pierre; Ayoub, Nadia; Barth, Alexander; Brewin, Robert; Charria, Guillaume; Campuzano, Francisco; Ciavatta, Stefano; Cirano, Mauro; Edwards, Christopher A.; Federico, Ivan; Gao, Shan; Garcia Hermosa, Isabel; Garcia Sotillo, Marcos; Hewitt, Helene; Hole, Lars Robert; Holt, Jason; King, Robert; Kourafalou, Villy; Lu, Youyu; Mourre, Baptiste; Pascual, Ananda; Staneva, Joanna; Stanev, Emil V.; Wang, Hui; Zhu, Xueming. |
| Integration of observations of the coastal ocean continuum, from regional oceans to shelf seas and estuaries/deltas with models, can substantially increase the value of observations and enable a wealth of applications. In particular, models can play a critical role at connecting sparse observations, synthesizing them, and assisting the design of observational networks; in turn, whenever available, observations can guide coastal model development. Coastal observations should sample the two-way interactions between nearshore, estuarine and shelf processes and open ocean processes, while accounting for the different pace of circulation drivers, such as the fast atmospheric, hydrological and tidal processes and the slower general ocean circulation and climate... |
| Tipo: Text |
Palavras-chave: Coastal; Ocean; Observations; Models; Synergy; Synthesis; Assimilation; Array design. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00508/61961/66050.pdf |
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| Vazquez-rodriguez, M.; Touratier, F.; Lo Monaco, C.; Waugh, D. W.; Padin, X. A.; Bellerby, R. G. J.; Goyet, C.; Metzl, N.; Rios, A.f.; Perez, F.f.. |
| Five of the most recent observational methods to estimate anthropogenic CO2 (Cant) are applied to a high-quality dataset from five representative sections of the Atlantic Ocean extending from the Arctic to the Antarctic. Between latitudes 60° N–40° S all methods give similar spatial distributions and magnitude of Cant. Conversely, large discrepancies are found in the Southern Ocean and Nordic Seas. The differences in the Southern Ocean have a significant impact on the anthropogenic carbon inventories. The calculated total inventories of Cant for the Atlantic referred to 1994 range from 48 to 67 Pg (1015 g) of carbon, with an average of 54±8 Pg C, which is higher than previous estimates. These results, both the detailed Cant distributions and extrapolated... |
| Tipo: Text |
Palavras-chave: Deep equatorial atlantic; Northern indian-ocean; Water mass ages; CO2; Sea; Transport; Increase; Tracers; Models. |
| Ano: 2008 |
URL: https://archimer.ifremer.fr/doc/00293/40430/38984.pdf |
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| Druon, Jean-noel; Loyer, S; Gohin, Francis. |
| Different scales of hydrological and biological patterns of the Bay of Biscay are assessed using space-borne and airborne optical remote sensing data, field measurements and a 3-dimensional biophysical model. If field measurements provide accurate values on the vertical dimension, ocean colour data offer frequent observations of surface biological patterns at various scales of major importance for the validation of ecosystem modelling. Although the hydrobiological model of the continental margin reproduces the main seasonal variability of surface biomass, the optical remote sensing data have helped to identify low grid resolution, input inaccuracies and neglect of swell-induced erosion mechanism as model limitations in shallow waters. Airborne remote... |
| Tipo: Text |
Palavras-chave: Bay of Biscay; Models; Scaling; Remote sensing; Satellite observation; Phytoplankton. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/publication-953.pdf |
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| Aversi-Ferreira,Tales Alexandre; Aversi-Ferreira,Roqueline A. G. M. F; Nascimento,Guilherme Nobre Lima do; Nyamdavaa,Enkhjargal; Araujo,Mariana Ferreira; Ribeiro,Peandra Paula; da Silva,Nattany Camila; Brandão,Lorraine Dias; Gratão,Lúcia Helena Almeida; Abreu,Tainá de; Pfrimer,Gabriel de Abreu; Souza,Vanessa Vieira de; Soares,Nayane Peixoto; Hori,Etsuro; Nishijo,Hisao. |
| Recently, the curriculum and the educational methodologies associated with health sciences courses are being reviewed and adapted. Pre-clinical sciences, such as anatomy and embryology are as well subjected to those changes. In human embryology courses it is common to use models to represent the different phases of development to facilitate learning, since the students can see and touch the models, obtaining knowledge by analogies. The purpose of the present study was to investigate if the construction of models by the students during practical embryology classes would improve or facilitate their learning. One year after the classes, 60 students answered a questionnaire with nine objective questions, including spaces for suggestions and observations. The... |
| Tipo: Journal article |
Palavras-chave: Education; Education Nursing; Embryology; Health Science Education; Models; Morphology. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022012000100034 |
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| Zhang, Yuexia; MIao, Zhenqing; Yan, Shiqiang. |
| The research on water masses is always one important facet of Oceanography. I adopt the method of Fuzzy Density Clustering to analyse water masses. Meanwhile, I use Visual Basic 6.0 as developing platform and utilize the MapX components to develop the platform of GIS. By integrating the Water Masses Model compiled by FORTRAN language, and GIS using Tight Coupling, I develop an Integrated System. That makes all phases are finished in one condition, including the gain of computing grid, the pick-up and analysis of data, the choice of parameters and resetting, the computing of model, and the result’s visualization. It improves the efficiency of the data analysis and decision-making. Finally, this system is applied in the Zhoushan fishing ground and adjacent... |
| Tipo: Journal Contribution |
Palavras-chave: Water masses; GIS; Models. |
| Ano: 2008 |
URL: http://hdl.handle.net/1834/5877 |
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| Jia-xun, Li; Ren, Zhang; Chen-zhao, Liu; Hong-jun, Fan. |
| Aiming at the influence of ocean mesoscale eddy on underwater acoustic propagation, a theoretical computation model of ocean mesoscale eddy was established based on the in-situ hydrographic data in the sea area of ocean mesoscale eddy. An underwater acoustic model-MMPE was used to simulate the acoustic propagation under the influence of different types, different intensities and positions of eddies, and different frequencies and depths of sources. It is found that warm-core eddy can make the convergence zone "move back" and the width of it increases, while cold-core eddy can make the convergence zone "move forward" and the width of it decreases. The bigger the intensity of eddy, the more notable the "forward "or "back "effect. Sound source located depths... |
| Tipo: Journal Contribution |
Palavras-chave: Models; Mesoscale eddies; Transmission loss. |
| Ano: 2012 |
URL: http://hdl.handle.net/1834/5830 |
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| Song, Wenping; Dai, Yuanyuan; Dong, Yubo. |
| This paper assesses the quality of Daliao river through Liaohe Park based on the model of GAM for water quality analysis and the monitoring data from 2006 to 2011.The results showed that the value of pH per year tended to the average; the DO in 2011 was much higher than that in other years, and the DO in 2006 was lower than the standard value; the quality risk in six sections was still higher than the standard value in 2007, which was caused by the high concentrations of COD. However, the value of ammonia nitrogen changes was only 40% related to DO and COD. |
| Tipo: Journal Contribution |
Palavras-chave: Models; Water quality control. |
| Ano: 2012 |
URL: http://hdl.handle.net/1834/5842 |
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| Harzallah, A.. |
| لقد تم تطبيق نموذج حسابي لتمثيل تنقل المياه وتسرب المواد الملوثة في بحيرة بنزرت. يتكون النموذج من ثلاثة أبعاد وهو يأخذ في الحسبان تبادل كميات المياه، الأملاح والطاقة بين البحيرة والبيئة المحيطة بها. وفي هذا النموذج مثالي حسابي لتسرب المواد الملوثة اللاتفاعلية. لقد تم تطبيق النموذج لتمثيل تسرب هذه المواد من موقع في جنوب غرب البحيرة ثم في أهم المواقع حول البحيرة. ولقد استعملت الرياح التي قيست والمد والجزر من البحر. لقد أثبتت النتائج ان المواد الملوثة تتبخر في المياه في خلال بضع ساعات. |
| Tipo: Journal Contribution |
Palavras-chave: Pollution monitoring; Pollutants; Industrial wastes; Transport; Models. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/1114 |
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| Bejaoui, B.; Harzallah, A.; Moussa, M.; Chapelle, A.. |
| This work concerns the development of a three dimensional hydroecological model based on two nutrient elements, nitrogen and phosphorus.The hydrodynamic model is 3D forced by monthly climatic data of NOAA. The ecological model was developed based on two nutrient elements, nitrogen and phosphorus in interaction with the phytoplankton and zooplancton. The ecological model is made up with two compartments, the water column and the sediment layer. Eight state variables are used to characterize the water column and six state variables for the sediment layer. As a first application, the model was tested on the Bizerte Lagoon. A comparison between simulations and observations showed that the model can reproduce with satisfactory way the observations carried out... |
| Tipo: Journal Contribution |
Palavras-chave: Dissolved oxygen; Hydrodynamics; Models; Nutrient cycles; Phytoplankton; Zooplankton. |
| Ano: 2008 |
URL: http://hdl.handle.net/1834/4264 |
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| Registros recuperados: 103 | |
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