Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 5.774
Primeira ... 2345678910 ... Última
Imagem não selecionada

Imprime registro no formato completo
Alternativa de biofertilizante como medio de cultivo para el crecimiento poblacional de dos microalgas marinas empleadas en la camaronicultura OceanDocs
Guerra Aznay, M.; Pérez Jar, L.; Leal Lorenzo, S.; Jaime Ceballos, B.; Jiménez Cabrera, R.; Pérez Díaz, S.; Bobadilla González, J..
Con el propósito de evaluar el humus de lombriz roja californiana Eisenia foetida como biofertilizante para el crecimiento poblacional de dos microalgas marinas, fueron cultivadas Tetraselmis tetrathele y Chaetoceros muelleri en agua de mar enriquecida con cuatro diluciones (50; 200; 350 y 500 mL) de extracto líquido de humus. La especie T. tetrathele, cultivada en la dilución de 200 mL, no mostró diferencias con el patrón medio f/2 Guillard para los parámetros: concentración celular, velocidad de crecimiento, tiempo de duplicación y productividad. C. muelleri cultivado en el mismo biofertilizante a las diluciones antes descritas, mostró un comportamiento productivo inferior al patrón, por lo que fueron evaluadas dos nuevas diluciones (550 y 650 mL). Las...
Tipo: Journal Contribution Palavras-chave: Humus; Biofertilizers.
Ano: 2012 URL: http://hdl.handle.net/1834/5708
Imagem não selecionada

Imprime registro no formato completo
Alternativas de ubicación de la Primera Estación Científica Ecuatoriana en la Antártica OceanDocs
Moreano, H..
Durante el desarrollo de la Primera Expedición Ecuatoriana a la Antártida se visitaron y exploraron varios lugares, a fin de escoger entre ellos el más idóneo para la instalación de la Primera Estación Científica Ecuatoriana. Punta Hennequin, Punta Fort William, Bahía Falsa y Puerto Arturo son sitios que presentan sus propias particularidades, unas en apoyo y otras en contra de los propósitos de la estación, pero en el balance parecía ser que Punta Fort William es la que mejor se adapta a las necesidades ecuatorianas; aunque ésto no significa que se haga un continuo esfuerzo para localizar el mejor sitio para la Primera Estación Ecuatoriana.
Tipo: Journal Contribution Palavras-chave: Installation; Polar zones; Antarctic zone; Inshore stations.
Ano: 1989 URL: http://hdl.handle.net/1834/3828
Imagem não selecionada

Imprime registro no formato completo
Alternativas ingenieras para la creación de playas artificiales a ambos lados del Hotel Meliá Varadero. OceanDocs
Martell Dubois, R.; Hernández Valdés, K.; Alvarez Cruz, A.; Izquierdo Álvarez, M..
At present, the application of engineering solutions is unavoidable when the dynamic equilibrium of the beaches is irreversibly affected, showing the phenomenon of erosion. The present work proposes engineering solutions that guarantee the necessary conditions for the formation and stabilization of beaches in the low terrace sectors that are located at both sides of Meliá Varadero Hotel.
Tipo: Journal Contribution Palavras-chave: Coastal engineering; Beach profiles; Beach erosion.
Ano: 2003 URL: http://hdl.handle.net/1834/3341
Imagem não selecionada

Imprime registro no formato completo
Alteromonas -подобные бактерии, выделенные из воды и беспозвоночных Черного моря, и их антагонистическая активность. IBSS Repository
Онищенко, О. М..
51 штамм Alteromonas-подобных бактерий, изолированных из воды и беспозвоночных Черного моря, а также 11 типовых штаммов родов Pseudoalteromonas, Alteromonas, Marinomonas, Shewanella исследованы по 97 фенотипическим признакам и сгруппированы в 8 фенонов методами нумерического анализа. Черноморские изоляты отнесены к видам Pseudoalteromonas nigrifaciens, P. citrea, P. aurantia, P. haloplanktis, P. undina. Спектр их антагонистической активности отличался на различных по составу питательных средах: на богатой среде "В" антагонизм наблюдался в отношении спороносных бактерий и Candida albicans, на синтетической среде "ВМ" - в отношении P. aeruginosa, и в меньшей степени - дрожжей рода Candida.
Tipo: Journal Contribution Palavras-chave: Bacteria; Bacteria; Http://aims.fao.org/aos/agrovoc/c_765.
Ano: 2001 URL: http://repository.ibss.org.ua/dspace/handle/99011/561
Imagem não selecionada

Imprime registro no formato completo
Ambientes sedimentarios recientes, de la Laguna costera La Cruz, Sonora, México OceanDocs
Villalba, A.I.; De la O Villanueva, M.; Ortega Romero, P..
En este trabajo se utilizan los datos estadísticos: tamaño medio varianza, sesgo y curtosis para su aplicación en una serie de funciones descriminatorias propuestas por Sahu B. K. (1964) para la localización y determinación de las áreas de características depositacionales contrastantes.
Tipo: Journal Contribution Palavras-chave: Sedimentary environments; Recent sediments; Coastal lagoons; Coastal lagoons; Http://aims.fao.org/aos/agrovoc/c_1697.
Ano: 1989 URL: http://hdl.handle.net/1834/2156
Imagem não selecionada

Imprime registro no formato completo
Amélioration de la production d'Artemia dans les salines tunisiennes par fertilisation minérale : comparaison entre deux types de fertilisants minéraux OceanDocs
Hussenot, J.; Aloui, N.; El Abed, A..
Pour augmenter la production de masse en salines tunisiennes de l’espèce locale Artemia tunisiana, nous avons entrepris d’optimiser l’emploi de fertilisants minéraux azotés et phosphorés. La première phase, présentée ici, a permis de choisir entre deux stratégies proposées dans des travaux internationaux, utilisant soit le phosphate double d’ammoniaque (DAP) et l’urée, soit le nitrate de potassium et le triple superphosphate. L’expérience a été menée avec 3 répliquats par traitement durant 44 jours. L’effet de chaque fertilisation a été significatif (p<0,10) comparé aux essais témoins, sur le développement de la biomasse microalgale, ainsi que sur la production de cystes et d’adultes d’Artemia, qui a été augmentée d’un facteur 2. La première stratégie...
Tipo: Journal Contribution Palavras-chave: Artemia culture; Biological fertilization; Salt; Fertilizers; Salt water; Http://aims.fao.org/aos/agrovoc/c_2867; Http://aims.fao.org/aos/agrovoc/c_14152.
Ano: 2002 URL: http://hdl.handle.net/1834/249
Imagem não selecionada

Imprime registro no formato completo
Amélioration de la production d'Artemia dans les salines tunisiennes par fertilisation minérale : détermination de la dose optimale d'emploi. OceanDocs
Hussenot, J.; Aloui, N.; El Abed, A..
In order to test the fertilization effect on Artemia production, six treatments of a mineral fertilization with di-ammonium phosphate (DAP) and urea (0.25*F; 0.5*F; 0.75*F; 1*F; 1.5*F; 2*F with F = 15 mg/L of DAP and 15 mg/L of urea) were compared to a control unfertilized. After the initial fertilization (day 0), a half a dose was brought once a week. At day 8, Artemia nauplii were inoculated in all tanks at the rate of 50 nauplii per liter. Physico-chemical and biological parameters of the culture were analysed each week, during the 48 days of experiment. The results showed that the optimal dose is 0.75*F; it gaves the maximal phytoplanctonic biomass expressed by chlorophyll-a has and it allowed to obtain a maximal production of Artemia (cysts and...
Tipo: Journal Contribution Palavras-chave: Aquaculture; Salts; Brine shrimp culture; Minerals; Aquaculture systems; Artemia culture; Aquaculture; Http://aims.fao.org/aos/agrovoc/c_550.
Ano: 2003 URL: http://hdl.handle.net/1834/1112
Imagem não selecionada

Imprime registro no formato completo
Ampharetidae Malgrem, 1867 (Annelida: Polychaeta) de Venezuela OceanDocs
Díaz-Díaz, Óscar; Liñero-Arana, Ildelfonso.
Se analizaron taxonómicamente 119 especímenes de la familia Ampharetidae Malmgren recolectados en fondos blandos de 26 estaciones de la costa venezolana. Para la recolecta del material se emplearon: nucleador de PVC (0.018 m2), trineo y draga van Veen(0.013 m3). Se identificaron cinco especies: Auchenoplax crinita Ehlers, 1887, Isolda pulchella F. Müller, 1858, Melinna maculata Webster, 1879, Amphicteis cf. scaphobranchiata Moore, 1906, y Hobsonia florida Banse, 1979, las cuales constituyen nuevos registros para el área y amplían la distribución geográfica de estas especies.
Tipo: Journal Contribution Palavras-chave: Taxonomy; Marine invertebrates.
Ano: 2012 URL: http://hdl.handle.net/1834/4437
Imagem não selecionada

Imprime registro no formato completo
Amphorellopsis acuta (Ciliophora : Spirotrichea : Tintinnida) – новый вид тинтиннид в Чёрном море IBSS Repository
Селифонова, Ж. П..
Tipo: Journal Contribution
Ano: 2011 URL: http://repository.ibss.org.ua/dspace/handle/99011/2213
Imagem não selecionada

Imprime registro no formato completo
Ampliación del ámbito geográfico de Notarius grandicassis (Siluriformes: Ariidae) en el Caribe colombiano. OceanDocs
Sánchez-Rodríguez, D.C.; Acero-P., A..
The ariid Notarius grandicassis (Valenciennes, 1840), commonly known as Thomas sea catfish, occurs at northeastern South America, ranging between Colombia and Brasil. It was reported originally from the mouth of the Amazon to the Golfo de Venezuela. In 2002, it was reported from the Colombian Guajira peninsula. Herein, we report the species from the mouth of the Magdalena River (Bocas de Ceniza), where it is rather frequently obtained by fishermen.
Tipo: Journal Contribution Palavras-chave: Fish; Fish; Http://aims.fao.org/aos/agrovoc/c_15903.
Ano: 2008 URL: http://hdl.handle.net/1834/3512
Imagem não selecionada

Imprime registro no formato completo
An annotated checklist of the cladocera of Cuba OceanDocs
Gutiérrez, M.E.; Varela, C..
Although Cuba is the most studied Caribbean island with regard to freshwater Cladocera, our knowledge of their species composition and distribution is still limited. In this study, all available published and unpublished, reliable sources were reviewed for all records of this group of crustaceans. Thus, a revised and updated list of 70 species of the orders Ctenopoda and Anomopoda recorded for the island is here presented, including all sources of information. From the total number of records, about 32% are doubtful. Comments on these and on other selected species are included. From a biogeographical point of view, the fauna of Cuba is closely related to that of southern Mexico, and both regions have a close similarity with South America. The actual...
Tipo: Journal Contribution Palavras-chave: Freshwater crustaceans; Freshwater crustaceans; Http://aims.fao.org/aos/agrovoc/c_33491.
Ano: 2008 URL: http://hdl.handle.net/1834/3355
Imagem não selecionada

Imprime registro no formato completo
An antimalarial cembranolide from Tanzania soft corals, Lobophytum crassum (von Marenzeller (1886) and L. rotundum (Tixier-Durivault (1957) OceanDocs
Said, S.A..
Bioscreening guided fractionation of the extracts of soft corals Lobophytum crassum and L. rotundum using brine shrimp larvae cytotoxicity assay led to the isolation of a cembranolide diterpene (E,E,E)-6,10,14-trimethyl-3-methylene- 3a,4,7,8,11,12,15,15aoctahydrocylotetradeca [b]furan-2(3H)-one (1). This diterpene, identified as cembranolide compound 1, was found to be active against the multidrug-resistant and chloroquine-sensitive strains of Plasmodium falciparum malaria parasite in vitro. It also possessed cytotoxic properties.
Tipo: Journal Contribution Palavras-chave: Lobophytum crassum; L. rotundum; Plasmodium falciparum; Antimalarial; Soft corals; Cytotoxic; Cembranolide Parasites Coral reefs Brine shrimp eggs Parasites http://aims.fao.org/aos/agrovoc/c_5574.
Ano: 2005 URL: http://hdl.handle.net/1834/1139
Imagem não selecionada

Imprime registro no formato completo
An approach to estimate tidal dissipation with single-point high-frequency ground wave radar data. OceanDocs
Mao, Huabin; Chen, Ju; Qiu, Chunhua; Lian, Shumin.
Using the single-point ground wave (GW) radar data at Shensi Station and the water level data at three stations (Shengsi, Luchaogang and Daishan), the authors obtained the flow vectors from the radial velocity of GW radar observation, and calculate four sub-tidal harmonic constants (O1, K1, M2 and S2). The tidal characteristics derived from the GW radar dataset agreed well with those from the tidal gauge data. The authors also analyzed the tidal energy flux and tidal energy dissipation rate. There was a good relationship between the tidal energy dissipation rate and topography. The study showed a good way to calculate tidal energy dissipation rate using GW radar data.
Tipo: Journal Contribution Palavras-chave: Radar; Tidal analysis; Tidal energy dissipation.
Ano: 2012 URL: http://hdl.handle.net/1834/5848
Imagem não selecionada

Imprime registro no formato completo
An Assessment of Urban Heat Island Effect using Remote Sensing Data. OceanDocs
Wang, Guiling; Jiang, Weimei; Wei, Ming.
Characteristics of urban heat island (UHI) effect and its cause are investigated by using MODIS data in April 2004. Surface parameters from the MODIS data have surface temperature (ts), albedo(a), and normalized difference vegetation index (NDVI). Their heterogeneities over urban and rural area are analyzed based on land cover classification, and their relations are also presented in order to explain the UHI effect. The results show that there exists obvious the UHI effect. Ts over urban areas are by 10.83 % higher than those over rural area,and NDVI and a over urban area are by 62 % and 18.75 % less than those over rural area, respectively. Surface temperature has significantly negative correlation with NDVI and their correlation coefficient is -0.73....
Tipo: Journal Contribution Palavras-chave: Remote sensing; Albedo; Surface temperature.
Ano: 2008 URL: http://hdl.handle.net/1834/5876
Imagem não selecionada

Imprime registro no formato completo
An Impact of Atmospheric Anomalies on Zooplankton Communities in the Northern Adriatic and Black Seas IBSS Repository
Piontkovski, S.A.; Fonda-Umani, S.; Stefanova, K.; Kamburska, L.; Olazabal, A. De.
The response of the zooplankton community to different types of atmospheric anomalies was analysed by the comparison of sampling series from the Adriatic Sea and the Black Sea. It was shown that the global scale atmospheric anomalies (exemplified by the North Atlantic Oscillation) could affect zooplankton communities entirely. An impact finds its way through the changes in the integrative characteristics of the zooplankton community (i.e. total copepod abundance and total mesozooplankton biomass). The mesoscale atmospheric anomalies (exemplified by the 2003 European Heat Wave) could affect zooplankton communities partially. Changes in integrative characteristics were not well pronounced. Instead, a community has responded through changes in the abundance...
Tipo: Journal Contribution
Ano: 2011 URL: http://repository.ibss.org.ua/dspace/handle/99011/2436
Imagem não selecionada

Imprime registro no formato completo
An interview-based assessment of the incidental capture and mortality of sea turtles in Mozambique´s Sofala Bank commercial shrimp fishery OceanDocs
Brito, A..
Trawling for penaeid shrimps in Sofala Bank (central Mozambique) has been suggested to have major effects on the size of sea turtle populations. A total of 39 commercial fishers, fishery observers and enforcers were interviewed to assess the level of sea turtle catches in fishing operations and reported that at least 1,735±1,235 sea turtles are caught each fishing season of about seven months. Green turtle (Chelonia mydas, 48.4%), the loggerhead turtle (Caretta caretta, 25.8%) were the most common species, but catches also comprised the olive ridley (Lepidochelys olivacea),the hawksbill turtle (Eretmochelys imbricata) and the leatherback (Dermochelys coriacea). Over 54.8% of the incidents occur within a few miles of the small islands forming the Primeiras...
Tipo: Journal Contribution Palavras-chave: Marine turtles; Trawling; Shrimp fisheries; Prawns and shrimps; Trawling.
Ano: 2012 URL: http://hdl.handle.net/1834/5142
Imagem não selecionada

Imprime registro no formato completo
An Overview of the Concept of Regional Sediment Management. OceanDocs
Lei, Huaiyan; Basoglu,Serif; Shi, Yuezhong; Lin, Binghuang; Gong, Chenlin.
In this article we described the concept of “regional sediment management” (RSM), and identified opportunities for and impediments to implementing regional approaches to sediment management, and also summarized the background information and applications of RSM. Furthermore, we considered the needs of RSM studies and, suggested the framework for developing RSM strategies, and described the specific studies for the Xiamen region.
Tipo: Journal Contribution Palavras-chave: Coastal zone; Dredging; Sediments.
Ano: 2007 URL: http://hdl.handle.net/1834/5864
Imagem não selecionada

Imprime registro no formato completo
An update on the lobster species (Panulirus White, 1847) from the Abrolhos Marine National Park, Northern Brazil OceanDocs
Faria Júnior, E.; de Carvalho Gaeta, J.; Santarosa Freire, A..
The aim of this study is to update the list of spiny lobsters in the Abrolhos Archipelago. The data were obtained by scuba diving during diurnal (8am to 5pm) and nocturnal (7pm to 11pm) visual censuses, from 2 to 12 meters depth. This work presents the first record of Panulirus laevicauda on the Abrolhos Archipelago, confirm the previous unique record of Panulirus echinatus and reinforce the occurrence of Panulirus argus. All the spiny lobster species of the genus Panulirus registered in the Brazilian coast are now registered for the Abrolhos National Marine Park reinforcing the importance of this marine protected area.
Tipo: Journal Contribution Palavras-chave: Lobster culture.
Ano: 2013 URL: http://hdl.handle.net/1834/5253
Imagem não selecionada

Imprime registro no formato completo
Análise do manancial e da pescaria de Magumba, Hilsa kelee (Cuvier, 1829) na Baía de Maputo, Moçambique, no período de 1992-2010 OceanDocs
Inacio, A.; Barros, P.C..
Foi feita uma avaliação da pescaria e do manancial de Hilsa kelee (magumba) na Baía de Maputo em Janeiro de 2011. Para a avaliação, foram aplicados dois tipos de modelos, um modelo dinâmico de produção geral baseado no modelo logístico de Schaefer, usando os dados de captura e índices de abundância, modelos baseados na composição por comprimentos e um modelo de podução por recruta por comprimentos com uma série de dados do período de 1992-2010. Os níveis de esforço de pesca mais elevados foram registados no ano de 2007 e o menor em 2009. As capturas totais estimadas para o período de 2006 a 2010 apresentam níveis abaixo das 3.000 t. O valor estimado mais baixo, cerca de 1.100 t, foi para o ano de 2009. A CPUE mostra um nível baixo em 2007 (119 kg por dia...
Tipo: Journal Contribution Palavras-chave: Fish stocks; Stock assessment.
Ano: 2012 URL: http://hdl.handle.net/1834/5141
Imagem não selecionada

Imprime registro no formato completo
Análisis comparativo del estado trófico de las aguas en la costa oriental de la provincia de Cienfuegos, Cuba. OceanDocs
Seisdedo, M.; Moreira, A.; Arencibia, G.; Pérez, I..
El propósito de este trabajo es evaluar el estado trófico de las aguas en la costa oriental de la provincia de Cienfuegos, a partir de las concentraciones de nutrientes y del fitoplancton. Se utilizaron dos métodos de evaluación del estado trófico y se consideraron los resultados de nitrógeno inorgánico (NI), fósforo inorgánico (FI), Si y fitoplancton, los cuales se obtuvieron durante cuatro campañas de muestreo llevadas a cabo en el período 2006-2007. Se analizó la proporción elemental disponible Si/NI según criterio de Redfield, así como también se obtuvieron los coeficientes de correlaciones entre las concentraciones de nutrientes y fitoplancton. Los resultados mostraron al Si como el nutriente más disponible en el área de estudio y a las...
Tipo: Journal Contribution Palavras-chave: Trophic status; Nutrients (mineral); Phytoplankton; Coastal zone.
Ano: 2010 URL: http://hdl.handle.net/1834/4529
Registros recuperados: 5.774
Primeira ... 2345678910 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional