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Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 159
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Entomological research during 1974 Thai Agricultural
15 ill., 15 tables
Palavras-chave: Corn; Maize; Sorghum; Insect pests; Entomology; Shoot fly; Varieties; Pest resistance; Population dynamics; Yields; Losses; ข้าวโพด; ข้าวฟ่าง; แมลงศัตรูพืช; กีฏวิทยา.
Ano: 1974 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3803
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Entomological research during 1975 Thai Agricultural
Somnuk Wongthong; Somporn Patanakamjorn; Young, W.R.; Anuchit Chinajariyawong; Pramual Chaitooptong; Surachate Jamornmarn.
8 ill., 6 tables
Palavras-chave: Corn; Maize; Sorghum; Entomology research; Insect pests; Shoot fly; Stem borers; Varieties; Pest resistance; Population dynamics; Yields; ข้าวโพด; ข้าวฟ่าง; กีฏวิทยา; แมลงศัตรูพืช.
Ano: 1975 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3843
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Dynamique des populations de poissons. ArchiMer
Daget, J..
The author explains that the population dynamics study, descriptive and explicative way, the changes which happen in the structure and the parameters (growth rate, sex ratio, fecundity, mortality etc.) of a monospecific population, by the use of mathematical models which permit prediction and simulation. If the fish population is not exploited, it is necessary to sample it directly and obtain samples representative of the demographical structure by experimental fishing (like electrical fishing) or by selectivity corrections. If the population is exploited, often the exploited phasis of the stock is only studied from samples representative of the whole captures. Now it happens that there is an important difference between the demographical structure of the...
Tipo: Text Palavras-chave: Pisces; Catch statistics; Mathematical models; Population dynamics.
Ano: 1976 URL: http://archimer.ifremer.fr/doc/1976/publication-1999.pdf
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Waterboatmen, and testing for Lotka-Volterra-type interactions OMA
Bergmans, M..
A previous paper by Istock, in which this author claims to have successfully applied the Lotka-Volterra model to his observations on corixid population dynamics, is criticised for the shortcomings in evidence cited to support the model's fit with the data. It is contended that the dynamic behaviour of the system of Hesperocorixa lobata - Sigara macropala interaction is not in accordance with the Lotka-Volterra model. ThIs brief critique is followed by comments by istock in reply to the points raised in Bergmans' letter.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Models; Population dynamics; Corixidae.
Ano: 1979 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3600
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Dynamique des populations marines exploitées. Tome 1. Concepts et modèles ArchiMer
Laurec, Alain; Le Guen, Jean-claude.
This book constitutes the first of a series of three volumes, the purpose of which is to cover the principal methods used in fish population dynamics. It is devoted to the definition of the main concepts, ami the presentation of the usual mathematical models. The second volume will deal with the fitting of the models, and the estimation of parameters. The third will be devoted to sampling problems. These volumes will be recollections of communications presented during ad hoc seminars, hold in Brest (GSG/COB) in 1980 and 1981. The first part deals with the basic concepts related to the two components whose relationship is being described by the population dynamics, namely the fish stock, to its relations with biological populations, and to the partition of...
Tipo: Text Palavras-chave: Pêche; Conservation de la ressource; Modèle mathématique; Dynamique des populations; Gestion de stock; Resource conservation; Mathematical models; Fishery resources; Stock assessment; Population dynamics.
Ano: 1981 URL: https://archimer.ifremer.fr/doc/1981/rapport-1126.pdf
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Cigarrinhas-das-pastagens no trópico úmido brasileiro. Repositório Alice
SILVA, A. de B..
1984
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Cigarrinha da pastagem; Biologia; Flutuação populacional; Controle; Deois; Zoology; Population dynamics; Pest control.
Ano: 1984 URL: http://www.alice.cnptia.embrapa.br/handle/doc/394796
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Flutuação estacional de mandarova em viveiro de seringueira em Altamira, PA. Repositório Alice
KALIL FILHO, A. N.; POLTRONIERI, M. C..
1984
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Seringueira; Praga; Flutuação populacional; Erinnyis ello; Hevea brasiliensis; Pests; Population dynamics.
Ano: 1984 URL: http://www.alice.cnptia.embrapa.br/handle/doc/394761
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Peche de l'anchois (Engraulis encrasicholus ) dans le golfe de Gascogne et sur le littoral atlantique de Galice depuis 1920. Variations quantitatives. ArchiMer
Junquera, Susana.
Using the fishing records from the most relevant ports of the Cantabrian and Galician coasts, th history of the anchovy (Engraulis encrasicholus ) fishery in this area is reconstituted. The crisis observed and the variations in the fishing areas throughout the time are analyzed. An estimation of the age classes composition in the catches founded on commercial classification data can be made. The hypothesis of existence of a core population in the Southern part of the Bay of Biscay is presented and that only under certain advantageous condition the expansion of this species throughout all the Cantabrian Sea was possible.
Tipo: Text Palavras-chave: Pisces; Age composition; Population dynamics; Catch/effort; Fishery statistics.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/publication-1795.pdf
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La Baie de Seine: Peuplements et especes benthiques en regime perturbe ArchiMer
Cabioch, L; Retiere, C.
The waters of the Seine River are polluted by urban, industrial and agricultural effluents. In addition direct industrial wastes inputs are emptied into the estuary. Within the limits of the Seine Bay program it was not possible to research pollution impacts on every estuarine ecosystem link; so only benthos have been studied. To take time response of organisms into account, the authors have defined indicators or quantitative evaluation of parameters, reflecting physiological state. They have studied population fluctuations caused by natural or man induced effects.
Tipo: Text Palavras-chave: Hydrodynamics; Population dynamics; Population structure; Bioaccumulation; Pollution effects; Marine pollution; Ecosystem disturbance; Benthos.
Ano: 1985 URL: http://archimer.ifremer.fr/doc/1985/acte-1304.pdf
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Premieres donnees sur la dynamique du peuplement macrobenthique des sables fins envases a Abra alba de la Baie de Seine orientale ArchiMer
Gentil, F; Irlinger, J; Elkaim, B; Proniewski, F.
The dynamics of macrobenthos populations living in muddy fine sands near Seine estuary have been studied, to obtain quantitative data for the knowledge of these populations and the impact of macrotidal environment disturbances.
Tipo: Text Palavras-chave: Seasonal variations; Population density; Population number; Ecosystem disturbance; Environmental effects; Population dynamics; Zoobenthos.
Ano: 1985 URL: http://archimer.ifremer.fr/doc/1985/acte-1309.pdf
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Crise de la production des coques (Cerastoderma edule ) en baie de Somme. 2. Impact de la dynamique biosedimentaire. ArchiMer
Ducrotoy, J; Desprez, M; Elkaim, B.
The recent collapse in the landings of cockles (Cerastoderma edule) from the Bay of Somme (France) required to investigate if a change in the environmental factors was liable for the drop of the bivalve populations. This project has led to a preliminary assessment of the situation and has been drawn up from the data collected by the Groupe d'Etude des Milieux Estuariens et Littoraux since 1978. It relies on the survey of the spatio-temporal changes of bio-facies. it is suggested that the impact of changes in sediment characteristics is important as well as competition with species as Pygospio elegans (Polychaeta). The above parameters are assessed as essential in the fluctuations of the cockle numbers but they do not explain entirely the collapse in the...
Tipo: Text Palavras-chave: Landing statistics; Clam fisheries; Stock assessment; Population dynamics; Marine mollusks.
Ano: 1985 URL: http://archimer.ifremer.fr/doc/1985/publication-1784.pdf
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Crise de la production des coques (Cerastoderma edule ) en baie de Somme. 1. Synthese des connaissances biologiques. ArchiMer
Desprez, M; Ducrotoy, J; Elkaim, B.
In this paper, the results collected since 1978 on the cockle (Cerastoderma edule) in the Bay of Somme have been recapitulated. A synthesis is brought up about causes of the bivalve population collapse which was portended as early as 1982 from the animal cinetics study. In order to back up the discussion, the main results dealing with the biology and ecology of the species are recalled in illustrated form. A review of the international literature leads to a comment upon the diagrams. A comparison with data from European estuaries tends to take climatic and oceanic disturbances into account as well as local pollution such as eutrophication which is probable on the littoral of Picardy.
Tipo: Text Palavras-chave: Clam fisheries; Stock assessment; Recruitment; Population dynamics; Marine mollusks.
Ano: 1985 URL: http://archimer.ifremer.fr/doc/1985/publication-1783.pdf
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Crepidula fornicata L. (gastéropode) dans le bassin de Marennes-Oléron : structure, dynamique et production d'une population ArchiMer
Deslous-paoli, Jean-marc.
The reproduction of Crepidula fornicata occurs from the end of February to October. This reproduction determines two periods of juvenile settlement, the first early in June and the second early in October. Because of the lack of distinct cohorts, estimation of production and population dynamics was made according to the location of individuals in the chain. This was confirmed by the agreement between the growth rings of the shells and individual location in the chain. The main chain accounted for 80 per cent of individuals, the others being isolated or in collateral chains. The curvilinear growth of Crepidula fornicata in the bay of Marennes-Oléron follows the equation Le = 81.01 (1-e (-0.400 8(t-0,01)). The average yearly production from a population of...
Tipo: Text Palavras-chave: Production; Marennes-Oléron; Crepidula fornicata; Dynamique de population; Population dynamics; Production; Marennes-Oléron; Crepidula fornicata.
Ano: 1985 URL: http://archimer.ifremer.fr/doc/1985/publication-2956.pdf
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Les pêcheries de buccin (Buccinum undatum L. : Gastropoda) du Golfe Normand-Breton. Eléments de gestion de la ressource ArchiMer
Santarelli Chaurand, Leonardo.
The whelk (Buccinum undatum) fisheries in the gulf between Brittany and Normandy have grown quickly over the past ten years. In 1983, 35 potters and 14 dories from Granville harbour and the Blainville maritime station landed 3,900 tonnes of whelk (for a value of 7.5 million francs). In spite of a sharp drop in profitability, the number of fishers is still growing. This study aimed to provide decision-making elements for rational management of the resource : stock abundance, catches per unit effort, mortality due to fishing effort and biological properties. In order to assess the impact of measures to organise the fishing effort on total catches in balance, two predictive models were used: Pella and Tomlinson's generalised production model and Ricker's...
Tipo: Text Palavras-chave: Bio economic modelling; Sampling; Population dynamics; Stock management; Mollusc; Modélisation bioéconomique; Echantillonnage; Dynamique de populations; Gestion de stocks; Mollusque.
Ano: 1985 URL: http://archimer.ifremer.fr/doc/1985/these-1203.pdf
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Growth, mortality and recruitment of commercially important fishes and penaeid shrimps in Indonesian waters AgEcon
Dwipongo, A.; Hariati, T.; Banon, S.; Palomares, M.L.D.; Pauly, Daniel.
Tipo: Report Palavras-chave: Population dynamics; Stock assessment; Commercial species; Shrimp fisheries; Agribusiness.
Ano: 1986 URL: http://purl.umn.edu/44682
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Population dynamics of the corn thrips, Frankliella williamsi Hood. on baby and sweet corn varieties Thai Agricultural
Sawarng Charoenying; Somchai Isichaikul; Amornsak, W..
5 tables
Palavras-chave: Corn; Maize; Corn thrips; Frankliniella williamsi; Sweet corn; Baby corn; Vegetable corn; Population dynamics; Insect pests; ข้าวโพด; ข้าวโพดหวาน; ข้าวโพดฝักอ่อน; เพลี้ยไฟ; ประชากร.
Ano: 1986 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4416
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Exploitation, biologie et dynamique du stock de langouste rouge de Corse, Palinurus elephas Fabricius ArchiMer
Marin, Jean.
The European red spiny lobster (Palinurus elephas) is the main target species of the small-scale fishery in Corsica. This fishery was described, its trends from 1981 to 1964 were analysed, and the exploitation conditions of the spiny lobster stock (fishing grounds, strategy and gear ; fishing regulations) were explained. Furthermore, the fishing effort and the yields were estimated through an indirect survey, in 1983 and 1984 . The growth was studied through tagging experiments. Growth increment per moult, Von BERTALANFFY's equation parameters, and moulting frequency were estimated for both sexes. Bias risks associated to tag loss at moulting were also analysed. In addition, estimates of K and L∞ variances were provided through "Jack-knife"...
Tipo: Text Palavras-chave: Palinurus elephas; Fishery biology; Population dynamics; Fecundity; Recruitment; Sexual maturity; Growth; Stock assessment; Sensibilité; Fécondité par recrue; Rendement par recrue; Analyse des cohortes; Maturité sexuelle; Croissance; Pêcherie; Langouste.
Ano: 1987 URL: http://archimer.ifremer.fr/doc/1987/these-1036.pdf
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The Peruvian anchoveta and its upwelling ecosystem: three decades of change AgEcon
Tipo: Report Palavras-chave: Clupeoid fisheries; Population dynamics; Upwelling; Peru; Engraulis ringens; Livestock Production/Industries.
Ano: 1987 URL: http://purl.umn.edu/44683
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Computer simulation of the population dynamics of the yellow stem borer, Scirpophaga incertulas (Walker) International Rice Research Institute
Xia, Jingyuan.
132 l. : ill. Thesis (M.S.) -- University of the Philippines at Los Baños
Tipo: Thesis Palavras-chave: Rice; Insect pests; Scirpophaga incertulas; Population dynamics; Simulation models; Mathematical models; Computers.
Ano: 1988 URL: http://hdl.handle.net/123456789/1184
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Biologie et dynamique des populations d’Anchois (Engraulis encrasicolus) des côtes mauritaniennes. OceanDocs
Ba, I.S..
Résumé: Cette étude traite de la biologie et de la dynamique des populations d’anchois (Engraulis encrasicolus) des côtes mauritaniennes. Après un bref rappel des conditions climatiques et hydrobiologiques de la région, une tentative de mise en évidence de race ou population locale a montré que cette espèce pourrait être rattachée à la population méridionale atlantique du Golfe de Gascogne. En Mauritanie, l’Anchois n’est pêché que de façon accessoire. Les captures les plus abondantes sont réalisées de mai à Septembre essentiellement dans la zone nord où l’on observe un upwelling permanent. Pour évaluer la taille du stock, des estimations de biomasse par échointégration ont été effectuées, mais celles-ci n’ont pas permis de donner un ordre de grandeur...
Tipo: Theses and Dissertations Palavras-chave: Anchovy fisheries; Upwelling; Population dynamics; Mortality.
Ano: 1988 URL: http://hdl.handle.net/1834/676
Registros recuperados: 159
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