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Registros recuperados: 14
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Bionomie benthique de l'estuaire de la Loire. I. Observations sur l'estran maritime de la mer a Cordemais. ArchiMer
Marchand, Jocelyne.
This study was the first to be undertaken since 1901, since when natural and industrial changes had occurred to affect the habitat. Observations are reported here for the banks of the north and south shores, using certain points as reference. Features of the 2 shores are described, and an inventory given of the fauna of the banks. Hydrozoan Cnidaria, Bryozoans, Annelids, Molluscs, Crustacea and fish are listed with notes, and particular attention is given to the crabs found (Rhithropanopeus harrisii tridentatus). The monthly distribution of crab sizes and sexes is given, and the species of animals found in association with crabs is shown to vary according to the site studied. The percentage of female crabs found to be fertile each month was investigated,...
Tipo: Text Palavras-chave: Crustacea and fish; Molluscs; Fauna; Habitat; Observation; Loire; Benthic bionomy.
Ano: 1972 URL: http://archimer.ifremer.fr/doc/1972/publication-2069.pdf
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Changing times, changing stories: generational differences in climate change perspectives from four remote indigenous communities in Subarctic Alaska Ecology and Society
Herman-Mercer, Nicole M; National Research Program, U.S. Geological Survey; nhmercer@usgs.gov; Matkin, Elli; University of Montana; elli.marie@gmail.com; Laituri, Melinda J; Ecosystem Science and Sustainability, Colorado State University; Geospatial Centroid, Colorado State University; melinda.laituri@colostate.edu; Toohey, Ryan C; Alaska Science Center, U.S. Geological Survey; Alaska Climate Science Center; rtoohey@usgs.gov; Massey, Maggie; Science Department, Yukon River Inter-Tribal Watershed Council; maggie.cm.massey@gmail.com; Elder, Kelly; Rocky Mountain Research Station, U.S. Forest Service; kelder@fs.fed.us; Schuster, Paul F.; National Research Program, U.S. Geological Survey; pschuste@usgs.gov; Mutter, Edda A.; Science Department, Yukon River Inter-Tribal Watershed Council; emutter@yritwc.org.
Indigenous Arctic and Subarctic communities currently are facing a myriad of social and environmental changes. In response to these changes, studies concerning indigenous knowledge (IK) and climate change vulnerability, resiliency, and adaptation have increased dramatically in recent years. Risks to lives and livelihoods are often the focus of adaptation research; however, the cultural dimensions of climate change are equally important because cultural dimensions inform perceptions of risk. Furthermore, many Arctic and Subarctic IK climate change studies document observations of change and knowledge of the elders and older generations in a community, but few include the perspectives of the younger population. These observations by elders and older...
Tipo: Peer-Reviewed Reports Palavras-chave: Alaska; Climate change; Indigenous knowledge; Observation; Perception; Yukon River Basin.
Ano: 2016
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Circulation on the shelf and the upper slope of the Bay of Biscay ArchiMer
Le Boyer, Arnaud; Charria, Guillaume; Le Cann, Bernard; Lazure, Pascal; Marie, Louis.
Here, we used measurements taken with an array of 10 acoustic Doppler current profilers deployed from July 2009 to August 2011 to describe the tidally filtered circulation over the shelf and upper slope on the French side off the French coasts of the Bay of Biscay. The measurements provided an overview of the shelf and slope circulation throughout the entire water column over a large range of spatial and time scales. The average circulation over the shelf and upper slope of the Bay of Biscay was poleward following the topography with a speed of the order of 3 cm s(-1). This average circulation had marked seasonal variability. In summer, the currents were equatorward on the outer shelf near surface. Deeper in the water column, the flow remained poleward. In...
Tipo: Text Palavras-chave: Bay of Biscay; Observation; Shelf and slope circulation; Vertical profile; ADCP; Wind driven circulation.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00139/24976/26395.pdf
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Comprendre la structure et la dynamique du phytoplancton en réponse aux forçages naturels et anthropiques, et contribuer au développement des outils d’analyses automatisées. Vers un Système Intégré d’Observation. ArchiMer
Lefebvre, Alain.
Les écosystèmes marins sont soumis à des pressions d’origine anthropique très importantes depuis ces dernières décennies. Parmi ces pressions, les apports excessifs de nutriments vont impacter directement le phytoplancton et indirectement d’autres niveaux trophiques compromettant ainsi les biens et services écosystèmiques. On parle alors d’eutrophisation, phénomène répandu à l’échelle mondiale. La Manche orientale et la baie sud de la mer du Nord ne font pas exception. La partie française de cette zone est marquée par des proliférations massives de la Prymnésiophycée, Phaeocystis globosa, qui aboutiront au développement d’une mousse abondante et nauséabonde sur le littoral comme à des dysfonctionnements au sein des habitats benthique et pélagique. C’est...
Tipo: Text Palavras-chave: Manche; Baie sud de la mer du Nord; Eutrophisation; Habitat pélagique; Phytoplancton; Abondance; Diversité; Hydrologie; Climat; Observation; Surveillance; Écologie numérique; Modélisation; Haute fréquence; Systèmes automatisés; Stations instrumentées; Ferry Box..
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00360/47103/47027.pdf
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Compte-rendu de la campagne OBSERVHAL98 - Observations à finalité halieutique ArchiMer
Latrouite, Daniel.
The scientific cruise Observhal98 took place in Biscay Bay, May 14 to June 6, 1998, with the submersible Nautile operated from the research vessel Nadir. The goal was to make direct underwater observations on fishes and invertebrates of commercial interest, on the environment in which they live and on the impact of fishing gears. A total of 22 dives, 2 to 5 hours long have been operated, ten by depth 1800 to 1000 m, three by 500 to 200 m, seven by 80 to 200 m and two in the water column. An in situ technic have been developped and operated from the submarine, with the aim of studying the growth scheme of deep water fishes. Specimen of Hoplostethus atlanticus and Trachyscorpia cristualata have been caught, anesthetised, injected with vital coloring and...
Tipo: Text Palavras-chave: Halieutique; Nautile; Plongée; Sous marin; Expérimentation; Observation; Fisheries; Nautile; Dive; Submarine; Experimentation; Observation.
Ano: 1999 URL: https://archimer.ifremer.fr/doc/1999/rapport-920.pdf
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Consumer behaviour in agricultural direct marketing AgEcon
Heer, Ines M..
Scandals in the food production industry have caused an uncertainty about quality and innocuousness of food for many consumers. This resulted in a strong risk perception of consumers at the point of sale. The direct marketing of products by farmers can be an important way to strengthen consumer confidence. In this contribution, buying behaviour is examined by an observation and a following interview. We develop an econometric model about the number of bought products and the proposition of marketing strategies which can be recommended to farmers involved in direct marketing.
Tipo: Conference Paper or Presentation Palavras-chave: Consumer behaviour; Direct marketing; Observation; Econometric model.
Ano: 2008 URL: http://purl.umn.edu/36855
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ECOSCOPA. Evaluer la qualité des écosystèmes conchylicoles en lien avec les pressions climatiques et anthropiques. Rapport annuel campagne 2015 ArchiMer
Fleury, Elodie.
Le réseau ECOSCOPA, co-financé par la DPMA, a pour objectif de développer un outil permettant de mesurer, à plusieurs échelles, des paramètres environnementaux et biologiques en lien avec la croissance et la survie d’huîtres creuses en élevage. Sur l’année 2015 et afin de préparer de façon concertée ce projet, il a été proposé dans un premier temps de renforcer la synergie existante entre les réseaux RESCO et VELYGER afin de disposer d’un suivi proactif du cycle complet de production de l’huître (incluant le captage, la croissance, la reproduction, les éventuelles mortalités) à partir d’animaux communs sur différents sites ateliers, en lien avec l’acquisition de descripteurs environnementaux et physiologiques susceptibles d’influencer chacune de ces traits...
Tipo: Text Palavras-chave: Observation; Modélisation; Explication; Anticipation; Communication.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00334/44511/44204.pdf
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MYTILOBS Campagne 2017 - 2018, Réseau d’observation des moules d’élevage sur la côte Atlantique et dans la Manche ArchiMer
Normand, Julien; Louis, Wilfried; Grizon, James.
La campagne 2017-2018 a été caractérisée par une augmentation quasi-généralisée des mortalités par rapport à l'année 2017, sans atteindre toutefois les taux de mortalités observés en 2014 ou 2016. Dans les Pertuis Charentais, les épisodes violents de mortalité observés auparavant ont ainsi laissé la place à des mortalités chroniques, quasiment impossibles à détecter dans les élevages mais bien mises en évidence par le protocole d'observation. Les mêmes signaux sont également observés sur la côte ouest de la presqu'île du Cotentin depuis quelques années. Sur ces sites, les taux de pertes cumulés étaient compris entre 17 et 44% au mois de septembre. En Vendée, des épisodes intenses et brutaux de mortalité ont été observés comme au cours des années...
Tipo: Text Palavras-chave: Moules; Mortalités; Observation; Variation spatio-temporelle.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00590/70200/68225.pdf
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MYTILOBS Campagne 2018 - 2019, Réseau d'observation des moules d'élevage sur la côte Atlantique et dans la Manche ArchiMer
Normand, Julien; Benabdelmouna, Abdellah; Louis, Wilfried; Grizon, James.
La campagne 2018-2019 est la sixième campagne consécutive du MYTILOBS après stabilisation des procédures et des protocoles. Au cours de cette campagne, une action supplémentaire visant à caractériser la qualité cyto-génétique des cheptels a été adossée au réseau. Le suivi des 2 points de Roulières et de Boyard a dû être abandonné, et un lot de moules de 2 ans a été ajouté au cheptel sentinelle pour le suivi des mortalités qui l’ont affecté. Les résultats de l’action d’observation mettent en évidence des mortalités toujours très présentes sur les sites du réseau qui avaient été les plus affectés au cours des années précédentes (principalement, la Baie de Bourgneuf et les secteurs d’élevage des Pertuis Charentais). La croissance des moules s’est avérée...
Tipo: Text Palavras-chave: Moules; Mortalités; Observation; Variation spatio temporelle.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00653/76490/77570.pdf
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Répartition spatio-temporelle de la chlorophylle a. Sous-région marine Golfe de Gascogne. Evaluation initiale DCSMM. ArchiMer
Gohin, Francis.
Tipo: Text Palavras-chave: Golfe de Gascogne; Chlorophylle a; Concentration de surface; Répartition spatio-temporelle; Observation.
Ano: 2012 URL: https://archimer.ifremer.fr/doc/00329/44009/43581.pdf
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Répartition spatio-temporelle de la chlorophylle a. Sous-région marine Manche - Mer du Nord. Evaluation initiale DCSMM. ArchiMer
Gohin, Francis.
Tipo: Text Palavras-chave: Manche; Mer du Nord; Chlorophylle a; Concentration de surface; Répartition spatio-temporelle; Observation.
Ano: 2012 URL: https://archimer.ifremer.fr/doc/00327/43827/43401.pdf
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Répartition spatio-temporelle de la chlorophylle a. Sous-région marine Mers celtiques. Evaluation initiale DCSMM. ArchiMer
Gohin, Francis.
Tipo: Text Palavras-chave: Mers celtiques; Chlorophylle a; Concentration de surface; Répartition spatio-temporelle; Observation.
Ano: 2012 URL: https://archimer.ifremer.fr/doc/00328/43931/43504.pdf
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Responses of wild titi monkeys, Callicebus coimbrai (Primates: Platyrrhini: Pitheciidae), to the habituation process Rev. Bras. Zool.
Souza-Alves,João Pedro; Ferrari,Stephen F..
Adequate habituation of free-ranging subjects is essential for any field study, but is generally unsystematic. Here, attempts to habituate three titi monkey (Callicebus coimbrai Kobayashi & Langguth, 1999) groups are described, and factors determining the effectiveness of the process are discussed. The "relentless pursuit" approach was aided by playback recordings of vocalizations but only one group was habituated adequately. Average contact in 13 encounters with group 1 was just over one minute, whereas in 32 encounters with group 2, it averaged 3,5 minutes (maximum = 22 minutes). Group 3 was more tolerant of observers, and was considered fully habituated by the seventh encounter. The factors determining this disparity remain unclear, although...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Behavior; Habitat; Habituation; Observation.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000600004
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Some notes on taxonomic methodology Naturalis
Hammen, L. van der.
The present paper constitutes an introduction to taxonomic methodology. After an analysis of taxonomic practice, and a brief survey of kinds of attributes, the paper deals with observation, description, comparison, arrangement and classification, hypothesis construction, deduction, model, experiment, abstraction, and synthesis. The methodological aspects of the species-concept and of biological classification are dealt with in two final sections.
Tipo: Article / Letter to the editor Palavras-chave: Abstraction; Classification; Comparison; Deduction; Description; Experiment; Hypothesis; Methodology; Model; Observation; Species-concept; Synthesis; Systematics; Taxonomy; 42.03; 42.70.
Ano: 1986 URL: http://www.repository.naturalis.nl/record/318283
Registros recuperados: 14
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