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| Registros recuperados: 75 | |
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| Charpentier, Aude; Grillas, P; Lescuyer, F; Coulet, E; Auby, Isabelle. |
| The consequences of a sudden decrease in water salinity on a macrophyte community dominated by the marine species Zostera noltii were investigated in a shallow coastal lagoon (Southern France). The expected change in the community assemblage was a competitive displacement of Z. noltii by Potamogeton pectinatus and Ruppia cirrhosa. However, the results of an eight-year survey did not validate this hypothesis. Zostera noltii remained dominant after three years at low salinity (ca. 5) and then suddenly disappeared within one year. The decline of Z. noltii was not associated with an increase of other species. The maximum depth colonized by all species decreased, suggesting that light availability became a limiting factor for the aquatic vegetation. The high... |
| Tipo: Text |
Palavras-chave: Mediterranean sea; Lagoon; Recovery; Loss; Turbidity; Salinity; Mapping; Seagrass. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/publication-3693.pdf |
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| Petitgas, Pierre; Renard, Didier; Desassis, Nicolas; Huret, Martin; Romagnan, Jean-baptiste; Doray, Mathieu; Woillez, Mathieu; Rivoirard, Jacques. |
| This paper presents a novel application of the geostatistical multivariate method known as min–max autocorrelation factors (MAFs) for analysing fisheries survey data in a space–time context. The method was used to map essential fish habitats and evaluate the variability in time of their occupancy. Research surveys at sea on marine fish stocks have been undertaken for several decades now. The data are time series of yearly maps of fish density, making it possible to analyse the space–time variability in fish spatial distributions. Space–time models are key to addressing conservation issues requiring the characterization of variability in habitat maps over time. Here, the variability in fisheries survey data series is decomposed in space and time to address... |
| Tipo: Text |
Palavras-chave: MAF; Space-time; Habitat; Mapping; Sardine; Bay of Biscay. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00599/71157/69915.pdf |
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| Bajjouk, Touria; Jauzein, Cecile; Drumetz, Lucas; Dalla Mura, Mauro; Duval, Audrey; Dubois, Stanislas. |
| Sabellaria alveolata is a sedentary gregarious tube-building species widely distributed from southwest Scotland to Morocco. This species builds what are currently considered the largest European biogenic reefs in the bay of Mont-Saint-Michel (France). As an ecosystem engineer, S. alveolata generates small to large scale topographic complexity, creating numerous spatial and trophic niches for other species to colonize. Sabellaria reefs are also under anthropogenic pressures, leading locally to massive degradation. However, stakeholders lack spatially explicit measures of reef ecological status, at adapted spatial resolution to provide key management information for this protected habitat. Traditional field surveys are extremely time-consuming and rely on... |
| Tipo: Text |
Palavras-chave: Benthic habitats; Biogenic reefs; Ecological status; Hyperspectral; Intertidal; Lidar; Mapping. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00654/76574/77710.pdf |
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| Sen, Arunima; Ondreas, Helene; Gaillot, Arnaud; Marcon, Yann; Augustin, Jean-marie; Olu, Karine. |
| Deep-sea ecosystems have attracted considerable commercial interest in recent years because of their potential to sustain a diverse range of mankind's industrial needs. If these systems are to be preserved or exploited in a sustainable manner, mapping habitats and species distributions is critical. As biodiversity at cold-seeps or other deep-sea ecosystems is driven by habitat heterogeneity, imagery is the obvious choice for characterizing these systems and has indeed proven extremely valuable towards mapping biogenic habitats formed by dense aggregations of large sized species, such as coral reefs, tubeworm bushes or bivalve beds. However, the acquisition of detailed images with resolution sufficient for reliable identification is extremely time... |
| Tipo: Text |
Palavras-chave: Mapping; Cold seeps; Multibeam; Bathymetry; Backscatter; Biogenic habitats. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00312/42286/41612.pdf |
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| Mintsa Nguema, Rodrigue; Mavoungou, Jacques F.; Ngou-milama, Krystina Mengue Me; Mamfoumbi, Modeste Mabicka; Koumba, Aubin A.; Lamine, Mariama Sani; Diarra, Abdoulaye; Asseko, Ghislaine Nkone; Mourou, Jean R.; Akotet, Marielle K. Bouyou; Mone, Helene; Mouahid, Gabriel; Atsame, Julienne. |
| In order to follow the Preventive Chemotherapy (PC) for the transmission control as recommended by WHO, Gabon initiated in 2014 the mapping of Schistosomiasis and Soil Transmitted Helminthiasis (STH). Here, we report the results of the Northern and Eastern health regions, representing a third of the land area and 12% of its total population. All nine departments of the two regions were surveyed and from each, five schools were examined with 50 schoolchildren per school. The parasitological examinations were realized using the filtration method for urine and the Kato-Katz technique for stool samples. Overall 2245 schoolchildren (1116 girls and 1129 boys), mean aged 11.28 +/- 0.04 years, were examined. Combined schistosomiasis and STH affected 1270 (56.6%)... |
| Tipo: Text |
Palavras-chave: Schistosomiasis; Soil-transmitted-helminthiasis; Mapping; Preventive chemotherapy; Transmission control; Gabon; Central Africa. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00660/77212/78691.pdf |
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| De Oliveira, Eric; Populus, Jacques; Guillaumont, Brigitte. |
| The aim of this study is to model the seaweed species distribution with respect to environmental parameters. We focused on fixed species of algae, such as fucoids. Firstly, we identified environmental parameters, such as substratum nature, immersion time, exposure, etc., which determine the seaweed distribution. Secondly, we used field sampling to compute the distribution laws for seaweed according to the environmental parameters selected. Thirdly, we used the distribution laws and the environmental parameters to perform predictive mapping of seaweed belts with a fuzzy logic method. Seaweed presence is directly dependent on the nature of the substratum. In the intertidal domain we used an alternative, because seaweed beds can be observed directly. We... |
| Tipo: Text |
Palavras-chave: Fussy logic; Mapping; Bentic habitats; Intertidal seaweed. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-2279.pdf |
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| Cuadrado,G. A; Andrade,M. F. C; Akamatsu,F. E; Jacomo,A. L. |
| The surgical treatment of breast cancer has been enhanced throughout the years in order to offer oncologically safer and more effective results with lower esthetic impact and fewer sequelae. The lymphedema of the upper limb is still an iatrogenic result of great incidence and morbidity after this treatment. A possible existence of independent breast and upper limb lymphatic pathways has become the issue of many researchers willing to minimize its occurrence. This review aims to compare the lymphatic pathways in the axilla described by traditional anatomy books and recently published articles about Axillary Reverse Mapping (ARM). With this purpose, a comparative table was made with the descriptions found in books and articles, a statistic table of the data... |
| Tipo: Journal article |
Palavras-chave: Anatomy; Mapping; Axillary; Lymphatics; Upper Limb; Drainage; Breast. |
| Ano: 2016 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000300049 |
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| Duyl, F.C. van. |
| Macrohabitat distribution, zonation and morphology of coral reefs in the Flores Sea region were investigated. Descriptions of reefs and reef maps are presented, based on large area surveys and aerial photographs. Diving equipment, underwater scooter, depth recorder and different methods of aerial photography were employed to collect data. The aim of the surveys was to acquire synoptic views of the study areas and to attribute to a uniform classification system applicable to reef mapping throughout the archipelago. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Coral reefs; Flores Sea; Indonesia; Mapping; 42.72. |
| Ano: 1991 |
URL: http://www.repository.naturalis.nl/record/318152 |
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| 申, 宝明; 佐藤, 禎稔; 岸本, 正; 谷, 昌幸; 仙北谷, 康; 加藤, 拓; 林, 芙俊; SHEN, Baoming; SATOW, Tadatoshi; KISHIMOTO, Tadashi; TANI, Masayuki; SENBOKUYA, Yasushi; KATO, Taku; HAYASHI, Futoshi. |
| マニュアスプレッダによる堆肥の散布精度の現状を把握することを目的とし，横軸ピータ型，縦軸ビータ型，左側方散布型の3機種を対象として堆肥の散布量分布および 堆肥散布精度の調査を行った。各機種の散布量分布は，いずれも山型の形状を示しており，横軸ビータ型，縦軸ピータ型では，マニュアスプレッダの中心から左右1m以内に，それぞれ全体の76%，40%が散布され，左側方散布型は左側3-5mの範囲に全体の71%が集中して散布された。最大散布畳は横軸ビータ型が2.3t/l0a，縦軸ビータ型が6.5t/10a，左側方散布型が10.3t/l0aとなり，重複散布しても規定散布量である2t/l0aが望めない結果となった。また，圃場全体の堆肥散布量は各機種で0.2-3.4t/lOa，2.4-22. 8t/l0a，0.6-5.0t/10aであり， 堆肥の性状によって散布むらが大きくなることが判明した。The purpose of this study was to investigate the present situation of compost spreading with manure spreaders in Tokachi region. Therefore，three different types of manure spreaders: rear horizontal beater type(A)，vertical beater type (B) and side discharge type (C)，were used to determine the application pattern and accuracy of compost spreading. Application pattern of each... |
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Palavras-chave: 堆肥の利用; マッピング; 炭素循環; 精密農法; Utilization of compost; Mapping; Carbon cycle; Precision farming. |
| Ano: 2010 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2701 |
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| Liu, Fucheng; Peng, Jun; Zhang, Cunyong. |
| Coastal sediment type map has been widely used in marine economic and engineering activities, but the traditional mapping methods had some limitations due to their intrinsic assumption or subjectivity. In this paper, a non-parametric indicator Kriging method has been proposed for generating coastal sediment map. The method can effectively avoid mapping subjectivity, has no special requirements for the sample data to meet second-order stationary or normal distribution, and can also provide useful information on the quantitative evaluation of mapping uncertainty. The application of the method in the southern sea area of Lianyungang showed that much more convincing mapping results could be obtained compared with the traditional methods such as IDW, Kriging... |
| Tipo: Journal Contribution |
Palavras-chave: Sediments; Mapping. |
| Ano: 2012 |
URL: http://hdl.handle.net/1834/5835 |
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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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| Registros recuperados: 75 | |
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