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| Registros recuperados: 128 | |
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| Jadot, Catherine; Donnay, A; Acolas, M; Cornet, Y; Begout, Marie-laure. |
| Acoustic telemetry was used to record diel movement and habitat utilization of the salema (Sarpa salpa) (Teleostei: Sparidae) during three consecutive summers from 2000 to 2002 in the Calvi and Achiarina bays of Corsica in the Mediterranean Sea. A total of 18 fish was equipped with acoustic transmitters inserted in the body cavity, 13 were tracked in the Bay of Calvi (275 mm +/- 26.9 L-F), and 5 in Achiarina Bay (260 mm +/- 33.6 LF). Two different systems were used to track the fish. The one used in the Bay of Calvi was a manual receiver and a directional hydrophone. The second system, used in Achiarina Bay, was a radioacoustic-positioning (RAP) system that continuously monitored the movements of the fish. Fish positions were put in a geographic... |
| Tipo: Text |
Palavras-chave: VRAP; Telemetry; Sarpa salpa; Manual tracking; Homing; Home range; Habitat utilization; GIS. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-1107.pdf |
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| Soletchnik, Patrick; Le Moine, Olivier; Razet, Daniel; Geairon, Philippe; Faury, Nicole; Goulletquer, Philippe; Robert, Stephane. |
| The Marennes-Oléron Bay is the first cupped oyster production site (35,000 tons/year). For more than 10 years, this species has suffered chronic mortality episodes. A research program has been developed since 1994 in association with the professional sector, in order to try and explain these mortalities. |
| Tipo: Text |
Palavras-chave: Production; Croissance; Modélisation; GIS; Système d'Informations Géographique; Crassostrea gigas; Huîtres; Mortalités estivales. |
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/1999/acte-3377.pdf |
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| Koubbi, Philippe; Loots, Christophe; Cotonnec, Gwenaelle; Harlay, Xavier; Grioche, Alain; Vaz, Sandrine; Martin, Canterbury Christ Church University; Walkey, Mike; Carpentier, Andre. |
| The spring distribution of larval fish stages of flatfishes in the Dover Strait (eastern English Channel) was studied in 1995 and 1999. Fish larvae were identified and sorted according to developmental stages in order to study their ontogenic distribution. The French coastal waters are characterised by an unstable tide-dependent front, which influences larval dispersion. In spring, the French coastal waters have a high phytoplanktonic production. They have higher temperatures, lower salinities and differences in current intensity compared with the central English Channel waters. Generalised Additive Models (GAM) combined with Geographic Information Systems (GIS) were used to model the potential habitats of life stages considering data from three major... |
| Tipo: Text |
Palavras-chave: English Channel; Fish larvae; Geostatistics; GIS; GAM. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-2090.pdf |
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| Kaimuddin, Awaluddin H.; Laë, Raymond; Tito De Morais, Luis. |
| The presence of tropical species has been reported in Atlantic-European waters with increasing frequency in recent years. Unfortunately, the history of their migrations is not well understood. In this study, we examined the routes and timing of fish migrations in several ecosystems of the East Atlantic Ocean, combining several publicly available and unpublicized datasets on species occurrences. The species studied were those noted as exotic or rare outside their previous known area of distribution. We used sea surface temperature (SST) data obtained from 30 years of satellite observation to define three distinct time periods. Within these periods, temperature trends were studied in six ecosystems: the North Sea, the Celtic Sea, the South European Atlantic... |
| Tipo: Text |
Palavras-chave: Speciesmigration; Atlantic-europeanwaters; Biogeographic; SST; Bathymetry; GIS. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00469/58030/60434.pdf |
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| Loubersac, Lionel; Manaud, Francois; Loarer, Ronan; Kerdreux, Michel; Durand, Christophe. |
| This paper describes a method that refers to the integration of analogic data of an Atlantic salt marsh atlas into a GIS. So the steps of the method are developed after a description of the original data sources in the form of analogic thematic cartography and associated text. They include digitalization, geometric corrections, topology and attributes definition, hotlinks setting up between graphics, texts and images, information layers crossing and spatial analyses. Four main results are presented and discussed: (a) the atlas digital form presentation, (b) objects selection and theme surface computation in the case of salt exploitation, (c) salt marsh identification versus inland fresh water marshes, (d) intersection between digital atlas objects and... |
| Tipo: Text |
Palavras-chave: Salt marsh; Digital cartography; GIS; Spatial analysis.. |
| Ano: 1998 |
URL: http://archimer.ifremer.fr/doc/00191/30215/28613.pdf |
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| Robert, Stephane; Le Moine, Olivier; Lunven, Michel; Caisey, Xavier; Gaffet, Jean-dominique; Le Gall, Erwan; Vasquez, Mickael; Rodriguez, Julien; Detcheverry, Sebastien; Goulletquer, Philippe. |
| Placopecten magellanicus production in Saint Pierre et Miquelon (NW North Atlantic) has been developed through direct seeding of juveniles on leased areas. However, most of the culture occurs in deep water ranging from 30 to 70 meters, which requires a monitoring by video to facilitate the grow-out and survival evaluation. In August 2008, a submersible leaded structure was connected by a video cable to the surface and observation screen was defined through the video, an altimeter and two lasers. The pictures were recorded on board on hard drive and digital video recorder DVCAM, and data were georeferenced by VIDEONAV software. Analysing the video tapes allows to establish a thematic database on the ground structure, presence or absence of seeded and wild... |
| Tipo: Text |
Palavras-chave: Scallops; Placopecten magellanicus; GIS; Monitoring; Miquelon Bay. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/00134/24544/22576.pdf |
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| Michel, Guillaume; Dupre, Stephanie; Baltzer, Agnes; Ehrhold, Axel; Imbert, Patrice; Pitel, Mathilde; Loubrieu, Benoit; Scalabrin, Carla; Lazure, Pascal; Marie, Louis; Geldof, Jean-baptiste; Deville, Eric. |
| Inactive and mostly elongated pockmarks of 100–200 m in dimension were recently discovered on the South Aquitaine Margin continental slope. They are distributed at water depths greater than 350 m in both interfluve and sediment-wave areas, and are strongly controlled by the sedimentary morphology and architecture. Water column and seafloor backscatter and sub-bottom profiler data do not exhibit present-day or past gas evidence, e.g., massive and continuous gas releases at the seabed and fossil methane-derived authigenic carbonates. It is thus proposed that the pockmarks originated from a shallow source and result from relatively recent and short-duration gas or water expulsion events. Former near-bottom currents may have contributed to the elongation of... |
| Tipo: Text |
Palavras-chave: Pockmark; Fluid; Seabed morphology; Aquitaine slope; GIS; Currents. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00413/52491/53279.pdf |
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| Durand, H.; Guillaumont, Brigitte; Loarer, Ronan; Loubersac, Lionel; Heral, Maurice; Prou, Jean. |
| The Charente Maritime coast, in central western France, is the most important area for oyster and mussel production in Europe. High density, in this restricted intertidal area, induces low growing rate and socio-economic difficulties. One of the possible solutions is to shift some oysters from intertidal area to submerged areas. Bathymetry, sedimentology, hydrodynamism, fisheries and administrative rules are some conditions which are considered to establish the better selection of potential zone. The successive steps of setting up the prototype of GIS are presented: digitized traditional data from charts, extracted data from grid models (hydrodynmaic model), merging of thematic covers, proposal of favorable areas. The results are discussed especially on... |
| Tipo: Text |
Palavras-chave: GIS; Modelisation; Bathymetry; Sedimentology; Hydrodynamism; Marennes Oleron. |
| Ano: 1994 |
URL: http://archimer.ifremer.fr/doc/00017/12784/9725.pdf |
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| Tsontos, Vm; Kiefer, Da. |
| Central to the development of an inventory of marine life and improved conceptual understanding of the mechanisms that dynamically shape species distribution patterns is the implementation of strategies aimed at enhancing assimilation and access to existing biogeographical information. Using the Internet as a medium, the Gulf of Maine Biogeographic Information System (GMBIS) project provides a framework and a set of reusable tools for the integration, visualization, analysis and dissemination of diverse types of biogeographical and oceanographic information. End-to-end viability of this approach is demonstrated in the context of a series of scientific storylines and a pilot application for the Gulf of Maine (GoM), a well-studied ecosystem that has been... |
| Tipo: Text |
Palavras-chave: Système d'information; Biogéographie; Biodiversité; Golfe du Maine; Information system; GIS; Biogeography; Biodiversity; Gulf of Maine. |
| Ano: 2002 |
URL: http://archimer.ifremer.fr/doc/00322/43302/43038.pdf |
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| 辻, 修; 宗岡, 寿美; 武田, 一夫; 土谷, 富士夫; TSUJI, Osamu; MUNEOKA, Toshimi; TAKEDA, Kazuo; TSUCHIYA, Fujio. |
| 日本の最北端に位置する北海道の十勝地方音更町において，GIS 上に耕地防風林のデータベースを構築することにより，その実態を明らかにし，耕地防風林の減少に歯止めをかけることを目的とした。その結果，音更町の耕地防風林延長は，1995 年が242.3 km，2003 年が255.0 km であり，この8 年間で12.7 km 増加した。耕地防風林樹種別延長割合は，2003 年度においてカラマツ (Larix kaempferi (Lamb.) Carriere) 74.9％，シラカンバ(Betula platyphylla sukatchev var. japonica (Miq.) Hara)9.5％，トドマツ (Abies sachalinensis Fr. Schm.) 3.0％，アカエゾマツ (Picea glehnii (Fr. Schm.) Masters.) 0.5％，その他12.1％ であった。耕地防風林延長を樹高別で比較すると，この8 年間において樹高20 m 以上の耕地防風林は54 km も減少したが，10 m 以下の耕地防風林は7 km しか増加しなかった。耕地防風林の減風効果領域は延長と逆に，この8 年間で1,423 ha も減少した。耕地防風林の減風効果領域と風害発生箇所の関係より，耕地防風林が風害防止に効果を発揮していることが再確認できた。 This research was done to slow the decrease in the use of windbreaks by preparing windbreaks database showing their effectiveness in preventing wind damage in Otofuke, Tokachi... |
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Palavras-chave: 耕地防風林; GIS; 風害; カラマツ; 十勝地方; Windbreak; GIS; Wind erosion damage; Larch; Tokachi region. |
| Ano: 2006 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2873 |
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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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| Bel Hassen, M.; Azizi, M.. |
| Les dimensions fractales des côtes tunisiennes ont été déterminées en utilisant les techniques spatiales fournies par les systèmes d’informations géographiques, en se basant sur une cartographie au 1 :100000 du trait côte. La dimension fractale des côtes tunisiennes est estimée à 1,0805. Une segmentation des côtes en trois parties (nord, est et sud) a permis de mettre en évidence une décroissance de la dimension fractale du nord vers le sud, indiquant que la complexité de la côte décroît vers les faibles latitudes. De nombreuses conséquences découlent de ces résultats, applicables à des stratégies d’échantillonnage, comme à la compréhension de l’écologie et l’interprétation de la distribution des espèces et les modèles de biodiversité. |
| Tipo: Journal Contribution |
Palavras-chave: Biodiversity; Cartography; Coastal morphology; Coasts; GIS; Geomorphology; Mapping; Mathematical analysis. |
| Ano: 2006 |
URL: http://hdl.handle.net/1834/4279 |
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| Martillo, C.; Pazmiño, A.; Chunga, K.; Resl, R.. |
| El presente estudio realiza un análisis morfoestructural de las plataformas que están en el territorio marìtimo ecuatoriano:(1)La Plataforma de las Islas Galápagos que es producto de la interacción entre el Punto Caliente de Galápagos y el Centro de Divergencia de Galápagos, y (2) La Plataforma Continental del Ecuador continental localizada en un margen activo convergente entre la placa oceánica de Nazca y los segmentos continental de la placa Sudamericana y del Bloque Norandino. Mediante el uso de Sistemas de Información Geográfica (SIG) y Modelos Digitales de Terreno (MDT), se caracterizó morfológicamente la proyección de la plataforma continental hacia el segmento marino, para luego realizar una confrontación entre el área que incluye la plataforma... |
| Tipo: Journal Contribution |
Palavras-chave: Marine geology; Coastal morphology; Continental shelves; GIS; Law of the sea. |
| Ano: 2010 |
URL: http://hdl.handle.net/1834/4218 |
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| Fa, J.E.; Lenton, S.M.; Del Val, J.P.. |
| Species mapping is a useful conservation tool for predicting patterns of biological diversity, or identifying geographical areas of conservation significance. Mapping can also improve our understanding of the appropriateness of habitat areas for individual species. We developed a new model, PREDICT, for mapping habitat suitability of plant and animal species from incomplete field survey data. PREDICT is a statistical program written for use within a GIS (geographic information system). It produces images and statistics that assess the potential of unstudied areas for wildlife for which presence/absence data and basic habitat information are available. Suitability for a target species is determined within surveyed and non-surveyed squares by a form of... |
| Tipo: Journal Contribution |
Palavras-chave: GIS; Biodiversity; Fish species. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/705 |
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| Registros recuperados: 128 | |
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