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| Registros recuperados: 188 | |
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| Alzugaray Martínez, Romina; Puga Millán, Rafael. |
| La región suroriental de Cuba es la segunda zona en aportes a los desembarques nacionales de langosta, Panulirus argus. Esta zona, al igual que el resto del país, presentó las mayores capturas a mediados de los años 80, decreciendo posteriormente hasta promediar en los últimos años menos de 1 000 t. Con el objetivo de caracterizar la dinámica de la población de langosta y del esfuerzo pesquero aplicado en esta región, se analizó información sobre captura, esfuerzo pesquero y composición por tallas de las capturas de langosta. Mediante técnicas de Análisis Secuencial de Poblaciones, se demuestra que en los últimos años ha ocurrido una disminución del número de individuos de la población de langosta, de la biomasa y del reclutamiento, en relación con la... |
| Tipo: Journal Contribution |
Palavras-chave: Lobster fisheries; Population dynamics; Fishery biology. |
| Ano: 2010 |
URL: http://hdl.handle.net/1834/4185 |
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| Andreazzi,Cecilia S. de; Rademaker,Vitor; Gentile,Rosana; Herrera,Heitor M.; Jansen,Ana M.; D'Andrea,Paulo S.. |
| The Pantanal is a South American biome characterized by extensive plains and stark environmental seasonality. Several habitats are subject to annual flooding, forcing small mammal species to aggregate in dry forest patches, which most likely influences their population dynamics and life history strategies. In order to investigate the seasonal influence on the life history traits of these small mammals, we conducted a 2-year mark-recapture study in the southeastern region of the Brazilian Pantanal (Nhecolândia) and analyzed the population dynamics of the most abundant small mammal species with the jackknife estimator. A trapping effort of 21,560 trap-nights resulted in 615 individuals in 1,171 captures (success = 5.43%). Three species of rodents - Oecomys... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gracilinanus agilis; Oecomys mamorae; Population dynamics; Seasonality; Small mammal; Thrichomys pachyurus. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000600009 |
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| ARAUJO, J. C. A. de; ARAUJO, A. E. de; SANTOS, A. F. dos. |
| Estudo da flutuacao populacional de Rhyncophorus palmarum e de sua associacao com o nematoide Bursaphelenchus cocophilus em uma plantacao de dende no municipio de Rio Preto da Eva (Manaus, AM, Brasil). A populacao do inseto foi considerada alta na area circunvizinha a plantacao e as vezes apresentou picos coincidindo com os meses chuvosos. Entretanto, nao houve correlacao signficativa entre captura e pluviosidade. As medias mensais de besouros capturados por isca, nos anos de 1988, 1989, 1990 e 1991, foram, respectivamente, 11,8, 17, 8, 17,0 e9,7. Os indices mensais de contaminacao dos insetos com o nematoide foram bastante variaveis e apresentaram distribuicao irregular ao longo do periodo. Os maiores percentuais de insetos contaminados foram observados... |
| Tipo: Artigo de periódico |
Palavras-chave: Inseto vetor; Bursaphelenchus cocophilus; Brasil; Amazonas; Rio Preto da Eva; Diseases; Anel Vermelho; Dendê; Dinâmica Populacional; Elaeis Guineensis; Doença; Nematóide; População; Nematoda; Rhynchophorus palmarum; Population dynamics. |
| Ano: 1998 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/668060 |
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| Araújo,Marina de Sá Leitão C. de; Tenório,Deusinete de O.; Castiglioni,Daniela da S.. |
| The semi terrestrial crabs are important elements of the fauna of coastal regions. The aim of this study was to analyze the population structure of Armases angustipes (Dana, 1852) at estuaries of the Ariquindá River, considered a non impacted area, and Mamucabas River, considered a few impacted area, on the south coast of state of Pernambuco, Brazil. The species occurred in all months of the year. The number of individuals per month varied, being higher in the months of transition between the seasons. This is probably due to significant seasonal variations of air and burrow temperature and burrow salinity. There was no sexual dimorphism in size of A. angustipes in the mangrove of Ariquindá River, but males were larger than females in the mangrove of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Population dynamics; Reproductive period; Sesarmid. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212014000200004 |
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| AZÊVEDO, H. F.; BENVINDO, F. D.; CAVALCANTE, L. N.; HAVERROTH, M.; WADT, L. H. de O.; CAMPOS, T. de. |
| Euterpe precatoria, popularly known as "açaí-do-amazonas", has agronomic, technological and economic potential and has been gaining prominence with the commercialization of its fruits. The production of this açaí-do-amazonas is based on extractivism and management practices have been recommended for sustainable collection. To recommend sustainable rates of fruit collection, it is essential to have information on the genetic variability of natural populations to monitor the recruitment and population dynamics. The objective of this study was to evaluate the transferability of microsatellite loci of E. edulis species to E. precatoria to confirm the applicability of these markers in genetic studies. Eighteen microsatellite loci developed for E. edulis were... |
| Tipo: Artigo de periódico |
Palavras-chave: Transferability; Western Amazon; Marcador microssatélite; Transferibilidade; Transferibilidad; Formoso; Novo Segredo; Feijó (AC); Acre; Dinámica poblacional; Amazonia Ocidental; Repeticiones de microsatélite; Variación genética.; Ensayos de variedades; Fitomejoramiento; Melhoramento genético vegetal; Variedade; Dinâmica populacional; Marcador molecular.; Açaí; Variação Genética; Population dynamics; Euterpe precatoria; Genetic variation; Loci.; Variety trials; Plant breeding; Microsatellite repeats. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1079268 |
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| 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 |
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| Barraquand, F.; Picoche, C.; Maurer, Daniele; Carassou, L.; Auby, Isabelle. |
| Phytoplanktonic communities maintain a high diversity in a seemingly homogeneous environment, competing for the same set of resources. Many theories have been proposed to explain this coexistence despite likely competition, such as contrasted responses to temporal environmental variation. However, theory has developed at a faster pace than empirical evaluation using field data, which requires inferring drivers of community dynamics from observational time series. Here, we combine autoregressive models with a data set spanning more than 20 years of phytoplankton counts every two weeks, together with nutrients and physical variables. By comparing models dominated by nutrients or physical variables (hydrodynamics and climate), we first explore which abiotic... |
| Tipo: Text |
Palavras-chave: Competition; Diatoms; Dinoflagellates; Hydrodynamics; Interactions; MAR; Mutualism; Network; Population dynamics; Seasonality; Time series. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00461/57257/59285.pdf |
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| Registros recuperados: 188 | |
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