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| Registros recuperados: 5.774 | |
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| Knapp, L.W.; Imamura, H.. |
| A new bembrid, Bembras adenensis, is described on the basis of specimens collected from the Gulf of Aden, western Indian Ocean. This species is easilydistinguished from B. japonica, the only known congener of the genus, by thefollowing combination of characters: larger orbital diameter, longer head length,pectoral-fin with a small black blotch near tip of upper rays, 3 gill rakers on upper gillarch, 19 pectoral-fin rays, and 15 anal-fin rays (vs. smaller orbital diameter, shorter head length, pectoral-fin with several small spots forming irregular bands, 2 gill rakerson upper gill arch, usually 17 pectoral-fin rays, and 14 anal-fin rays in B. japonica). |
| Tipo: Journal Contribution |
Palavras-chave: Fish species. |
| Ano: 1997 |
URL: http://hdl.handle.net/1834/955 |
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| Aguilera, O.; Solano, O.D.; Valdez, J.. |
| El género Steilifer se caracteriza por la ausencia de barbillones mentonianos; distancia interorbital contenida S.5 veces o menos en la longitud de la cabeza; vejiga natatoria con dos cámaras, la anterior con un par de divertículos posterotaterales; cabeza cavernosa; branquispinas largas y flexibles; otolitos sagitta y lapillus bien desarrollados. Se describe una nueva especie de Stellifer, !a cual se caracteriza por tener los divertículos de la vejiga natatoria muy pequeños, cortos y en forma de bulbo, el primer arco branquial oscuro, casi negro, con 42 a 49 branquispinas, la mayor de ellas supera en longitud al filamento branquial del ángulo del mismo arco, y por presentar cuatro poros en el mentón. Se separa de las demás especies del género por el... |
| Tipo: Journal Contribution |
Palavras-chave: New species; New species; Http://aims.fao.org/aos/agrovoc/c_15733. |
| Ano: 1983 |
URL: http://hdl.handle.net/1834/3969 |
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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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| De los Rios, Patricio. |
| Los ensambles zooplanctónicos en cuerpos de agua de la zona centro y sur de la Patagonia chilena se caracterizan por su alto endemismo y un relativo bajo número de especies lo cual se debería principalmente a la oligotrofía y niveles de conductividad de estos ambientes. El objetivo del presente trabajo consistió en analizar información publicada y sin publicar sobre crustáceos zooplanctónicos en lagos y lagunas de la zona central y sur de la Patagonia (44 - 53g S). A estos datos se les estimó la razón especies / género, y se aplicó un modelo nulo basado en co-ocurrencia de especies mediante una matriz de presencia y ausencia de especies, con la intención de determinar ausencia de factores reguladores de las asociaciones de especies. Dentro de este mismo... |
| Tipo: Journal Contribution |
Palavras-chave: Zooplankton; Assemblages; Lakes; Ponds; Crustaceans. |
| Ano: 2008 |
URL: http://hdl.handle.net/1834/4161 |
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| Zhang,Jianhai; Chen, Hongmei; Zhu, Xiaoming. |
| The landfall process of typhoon Haitang which affected East China seriously was simulated by using the MM5 model and the track, intensity, precipitation and structure of typhoon were successfully reproduced. Then through the sensitive test, the effects of terrain were analyzed.Results show that the irregular track during the period of typhoon passing through Taiwan and later landfalling at Fujian was in relation to the occurring and developing of orthographic impressed depression. The amount of rainfall was enhanced more than one time and the strength of typhoon was weakened 4 to 5 hPa. It is found that the effect of terrain on the structure of typhoon is limited at low level and is backward in space compared with the one at high level. In addition, the... |
| Tipo: Journal Contribution |
Palavras-chave: Typhoons. |
| Ano: 2007 |
URL: http://hdl.handle.net/1834/5833 |
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| Fennessy, S.T.; Brash, J.M.. |
| This study investigated age and growth of Otolithes ruber, found in KwaZulu-Natal, South Africa. The specimens were collected from prawn trawlers that operate off the shallow water Tugela Bank and from a recreational boat fishery in Durban. Estimates of age and growth parameters were based on the examination of sectioned sagittal otoliths. There was difficulty in estimating growth parameters for separate sexes because the small fish were not sexed and the numbers of males was low. Periodicity of growth zone formation was assumed to be annual although periodicity of growth zone deposition could not be established by marginal zone analysis. The von Bertalanffy growth curve was used to describe the combined male and female growth of O. ruber: Lt = 419mm TL... |
| Tipo: Journal Contribution |
Palavras-chave: SCIAENIDAE; Age; Growth; Type specimens; Growth; Age; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_186. |
| Ano: 2005 |
URL: http://hdl.handle.net/1834/1130 |
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| Marinkelle, C.J.; Grose, E.S.. |
| Se hace una revisión de todos los microorganismos o parásitos reportados de los murciélagos, los cuales pueden infectar al hombre o a los animales domésticos. Los resultados obtenidos por los autores a partir del examen de cerca de 20000 murciélagos colombianos son incluidos. Las referencias que muestran infecciones experimentales de murciélagos con organismos patógenos para el hombre o los animales domésticos también son mencionadas. Todos los Arbovirus, Salmonella, Spirochaeta, y Leptospira evidenciados en los murciélagos se incluyen en la lista, debido a que ellos son considerados patógenos potenciales, o por que los anticuerpos contra estos microorganismos, pueden ocurrir en el hombre o los animales domésticos. |
| Tipo: Journal Contribution |
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| Ano: 1972 |
URL: http://hdl.handle.net/1834/3270 |
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| Wu, Z.. |
| In this paper, the circulations driven by deep heating and shallow heating are investigated through analytically solving a set of linear equations and examining circulations simulated by a dry primitive equation model. Special emphasis is placed on the low-level mass (moisture) convergence associated with the forced circulation and the maintenance of the shallow and deep heat sources. It is found that the forced circulation driven by shallow heating is more likely to be trapped horizontally near the heating area but relatively extended in the vertical. As a consequence, diabatic heating can not balance adiabatic cooling due to upward motion. At the levels slightly above the top of the heating, a negative vertical gradient of temperature perturbation... |
| Tipo: Journal Contribution |
Palavras-chave: Atmospheric circulation. |
| Ano: 2002 |
URL: http://hdl.handle.net/1834/502 |
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| Fa, J.E.; Lenton, S.M.; Del Val, J.P.. |
| Species mapping is a useful conservation tool for predicting patterns of biological diversity, or identifying geographical areas of conservation significance. Mapping can also improve our understanding of the appropriateness of habitat areas for individual species. We developed a new model, PREDICT, for mapping habitat suitability of plant and animal species from incomplete field survey data. PREDICT is a statistical program written for use within a GIS (geographic information system). It produces images and statistics that assess the potential of unstudied areas for wildlife for which presence/absence data and basic habitat information are available. Suitability for a target species is determined within surveyed and non-surveyed squares by a form of... |
| Tipo: Journal Contribution |
Palavras-chave: GIS; Biodiversity; Fish species. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/705 |
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| Salzwedel, H.; Muller, K.. |
| Un resumen de datos meteorológicos e hidrológicos para la Bahía de Santa Marta, Caribe colombiano. Se presentan datos de precipitación, temperatura y salinidad del agua superficial para la Bahía de Santa Marta, Caribe colombiano, para el periodo de noviembre 1978 a mayo 1982. Se obtienen generalizaciones de los patrones anuales incluyendo datos ya publicados (Muller, 1979). A partir de mediciones adicionales de la variación de la temperatura del agua y de la salinidad durante el día, valores preliminares de cuantos de luz, junto con datos disponibles sobre contenido y saturación de oxigeno, pH, alcalinidad, estabilidad, dirección y velocidad del viento, horas de luz, temperatura del aire y descarga del Río Manzanares, se hace una caracterización... |
| Tipo: Journal Contribution |
Palavras-chave: Meteorology; Physical oceanography; Physical oceanography; Meteorology; Http://aims.fao.org/aos/agrovoc/c_5830; Http://aims.fao.org/aos/agrovoc/c_4783. |
| Ano: 1983 |
URL: http://hdl.handle.net/1834/3972 |
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| Hattour, A.; Ben Abdallah, L.; Guennegan, Y.. |
| Within the frame of the National Program (PNM), 'Assessment of Marine Tunisian Resources' (1996-1999), two prospecting surveys on small pelagic fishes, have been led in narrow collaboration with French Institute IFREMER. Their objectives were to specify the relative fishes abundance, their spatial-temporal variability but also to quantify the maximum sustainable yield (MSY) of this resource. A third important goal was to familiarize a Tunisian scientist team, with numerical methods and data processing used during the cruises (reading of echograms, treatments of data, etc.) in stocks assessment. It is known that the indirect stocks assessment methods of small pelagic species is not reliable, reason for which we opted to apply echo - integration techniques.... |
| Tipo: Journal Contribution |
Palavras-chave: Abundance; Biomass; Fishery surveys; Pelagic fisheries; Potential yield; Stock assessment; Biomass; Stock assessment; Pelagic fisheries; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_5659. |
| Ano: 2004 |
URL: http://hdl.handle.net/1834/4237 |
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| Masalu, D.C.P.. |
| The Rodriguez Triple Junction (RTJ) is a junction connecting three mid-ocean ridges in the Indian Ocean: the Southwest Indian Ridge (SWIR), the Central Indian Ridge (CIR) and the Southeast Indian Ridge (SEIR). The evolution of the RTJ has been studied extensively for the past 10 Ma and the triple junction is believed to be largely a ridge-ridge-ridge (RRR) triple junction. However, due to the scarcity of data its configuration prior to that period is poorly understood. The migration of the RTJ in the hotspot reference frame, for the past 75 million years has been mapped, by reconstructing its traces on the three plates (African, Antarctic and Indian) to their former positions. The results show that the RTJ has migrated northeasterly at velocities varying... |
| Tipo: Journal Contribution |
Palavras-chave: Mid-ocean ridges. |
| Ano: 2002 |
URL: http://hdl.handle.net/1834/740 |
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| Kimani, E.N.; Mavuti, K.M.. |
| Pearl oysters are an important marine resource within the Indo-Pacific oceans. They are widely cultured for the production of black pearls, their flesh is eaten, and their shell, known as mother-of-pearl (MOP) is used in the ornament and button industry. The blacklip pearl oyster, Pinctada argaritifera L., has been harvested from East Africa for MOP for decades. A survey within nearshore habitats in Kenya showed that Pinctada margaritifera is widely distributed in shallow lagoons, bays and channels. Other oyster species found during the survey were the wing oyster, Pteria penguin, occurring in deep channels in Shimoni and Mombasa, and Pt. chinensis, within lagoons and channels in Malindi, Mombasa and Shimoni. Pinctada margaritifera was most abundant in... |
| Tipo: Journal Contribution |
Palavras-chave: Oyster fisheries Pinctada margaritifera Abundance Population structure Sex behaviour Pteria penguin Pteria chinensis ISW; Kenya. |
| Ano: 2002 |
URL: http://hdl.handle.net/1834/39 |
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| Mgaya, Y.D.; Teikwa, E.D.. |
| The coastal waters of Bagamoyo in Tanzania constitute an important penaeid prawn trawling ground. Despite the high economic value attached to this resource, the biological information necessary for its sustainable exploitation is scanty and fragmented. The present study was therefore designed to investigate the species composition, population abundance and reproduction of the penaeid prawns in Bagamoyo coastal and nearshore waters. Samples were obtained monthly for a period of one year from inshore waters adjacent to the Ruvu Estuary while additional samples were bought at the beach from artisanal fishermen. In the laboratory, samples were identified to the species level. Four penaeid species, Fenneropenaeus indicus (formerly known as Penaeus indicus... |
| Tipo: Journal Contribution |
Palavras-chave: Prawn culture. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/960 |
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| Chaves-Fonnegra, A.; Zea, S.; Gómez, M.L.. |
| It is known that the encrusting and excavating Caribbean sponge Cliona delitrix may increase its abundance near sources of sewage. To ascertain whether its current conspicuousness in leeward reefs of San Andrés Island (SW Caribbean, Colombia) is related to organic pollution from local raw sewage discharges, quantitative data on density and cover of this sponge and other benthic components was obtained from belt and line transects at seven stations along the shallow (5-10 m deep) terrace. Coral mucus was sampled to quantify Escherichia coli bacteria, as an approximate indicator of sewage plume influence on benthic biota. A negative multiplicative regression between amount of E. coli in coral mucus and distance from the main raw sewage outlet demonstrated... |
| Tipo: Journal Contribution |
Palavras-chave: Sewage; Coral; Sewage; Http://aims.fao.org/aos/agrovoc/c_7007. |
| Ano: 2007 |
URL: http://hdl.handle.net/1834/3517 |
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| Lindao, J.; Calderon, G.. |
| Entre abril y diciembre de 2008, en las estaciones fijas frente a las zonas de Esmeraldas, Punta Galera y Puerto López, se identificaron un total de 95 241 huevos de peces los mismos que pertenecieron a 10 órdenes, 31 familias, 35 géneros, 7 especies y organismos en sus primeras fases (fase mórula), de los cuales la Familia SCIAENIDAE fue la mas abundante; mientras que el número de larvas obtenidas fue 83 735; que pertenecieron a 19 órdenes, 56 familias, 83 géneros, 21 especies y organismos en estadios de prelarvas siendo la especie Bregmacero bathymaster la mas abundante durante los meses de muestreo. De los análisis cualitativos y cuantitativos, el 2008 registró menor densidad y variedad de especies ictioplanctónicas, a lo reportado en el 2006... |
| Tipo: Journal Contribution |
Palavras-chave: Ichthyoplankton surveys; Fixed stations; Fish eggs; Distribution; Density (population). |
| Ano: 2009 |
URL: http://hdl.handle.net/1834/4788 |
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| Carozza, C.R.; Cotrina, C.P.. |
| The study aims to discriminate juvenile and adult concentration areas of white croacker Micropogonias furnieri and striped weakfish Cynoscion striatus in two different areas: Argentine-Uruguayan Common Fishing Zone (AUCFZ) and El Rincón (Buenos Aires Prov., Argentina). The length structure and the relative abundance of these two species were analyzed with data from a research cruise carried out by R/V Dr.E.L.Holmberg during November 1994. Data of relative abundance in t/nm2 were considered to define distribution and concentration areas. 49 samples of white croaker and 41 striped weakfish from AUCFZ a, inside the area of Río de la Plata and in front of Montevideo coast, at depths lesser than 8 meters, while the adults were located in the northern coast of... |
| Tipo: Journal Contribution |
Palavras-chave: Abundance; Fishery surveys; Size distribution; Coastal fisheries; Coastal fisheries; Http://aims.fao.org/aos/agrovoc/c_1696. |
| Ano: 1998 |
URL: http://hdl.handle.net/1834/2472 |
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| Registros recuperados: 5.774 | |
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