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| Registros recuperados: 298 | |
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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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| Ávila Najera, Dulce María. |
| Durante el 2007 y 2008 en el ecotono (bosque de encino y bosque tropical) ubicado en el Ejido de San Nicolás de los Montes enclavado en la Huasteca Potosina se estudió la abundancia y densidad del jaguar (Panthera onca) y la abundancia relativa (IAR) de seis de sus presas potenciales, armadillo (Dasypus novemcinctus), coatí (Nasua narica), pecarí de collar (Pecari tajacu), venado temazate (Mazama temama), venado cola blanca (Odocoileus virginianus) y tuza real (Cuniculus paca). La abundancia del jaguar se estimó con base en trampeo fotográfico, la densidad por medio del programa de cómputo CAPTURE. El IAR se calculó con tres metodologías (transectos parcelas y trampas-cámara). Además, por medio de encuestas se determinó el índice de importancia... |
| Tipo: Tesis |
Palavras-chave: Abundancia; Jaguar; Presas; Valor cultural; Conocimiento; Abundance; Jaguar; Prey; Cultural value; Knowledge. |
| Ano: 2009 |
URL: http://hdl.handle.net/10521/1168 |
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| Qiu,Shanlian; Chen,Guoyuan; Zhou,Yiyong. |
| The measures of most-probable-number and restriction fragment length polymorphism analysis were used to analyze the abundance and diversity of ammonia-oxidizing bacteria in sediment of a Chinese shallow eutrophic urban lake (Lake Yuehu). Among the 5 sampling sites, ammonia concentration in interstitial water was positively proportional not only to the content of organic matter, but also to ammonia-oxidizing bacteria numbers (at a magnitude of 10(5) cells g-1 dry weight) in sediment significantly. Furthermore, the diversity of ammonia-oxidizing bacteria were determined by means of PCR primers targeting the amoA gene with five gene libraries created and restriction pattern analysis. The 13 restriction patterns were recorded with 4 ones being common among all... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ammonia-oxidizing bacteria; Abundance; AmoA; Diversity. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000100031 |
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| BREVES,ANDRÉ; SZÉCHY,MARIA TERESA M. DE; LAVRADO,HELENA P.; JUNQUEIRA,ANDREA O.R.. |
| ABSTRACT The reef-building vermetid Petaloconchus varians occurs in the western Atlantic Ocean, from the Caribbean Sea to the southern coast of Brazil. The present study evaluated the abundance of P. varians on intertidal rocky shores in Ilha Grande Bay (Rio de Janeiro State), and characterized their reefs, describing the species density, besides the weight and the belt width of the reefs. Petaloconchus varians reefs were recorded at 25 sites, with rocky shores exposed to different wave action (very sheltered, sheltered, semi-exposed and exposed) and slopes (10° to 46°). Clusters of individuals constructed large reefs along the middle intertidal zone, creating a wide belt (38 cm to 2 m). The density of P. varians and the weight of the reefs ranged from 620... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Abundance; Molluscs; Rio de Janeiro; Southwestern Atlantic Ocean; Wave exposure. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000300907 |
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| Ávila Nájera, Dulce María. |
| Durante el 2007 y 2008 en el ecotono (bosque de encino y bosque tropical) ubicado en el Ejido de San Nicolás de los Montes enclavado en la Huasteca potosina se estudió la abundancia y densidad del jaguar Panthera onca) y la abundancia relativa (IAR) de seis de sus presas potenciales, armadillo (Dasypus novemcinctus), coatí (Nasua Narica), pecarí de collar (Pecari tajacu), venado temazate (Mazama temama), venado cola blanca (Odocoileus virginianus) y tuza real (Cuniculus paca). La abundancia del jaguar se estimó con base en trampeo fotográfico, la densidad por medio del programa de cómputo CAPTURE. El IAR se calculó con tres metodologías (transectos parcelas y trampas-cámara). Además, por medio de encuestas se determinó el índice de importancia cultural... |
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Palavras-chave: Abundancia; Jaguar; Presas; Valor cultural; Conocimiento; Abundance; Prey; Cultural value; Knowledge; Maestría; Ganadería; Fauna silvestre. |
| Ano: 2009 |
URL: http://hdl.handle.net/10521/106 |
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| Avila Nájera, Dulce María. |
| Durante el 2007 y 2008 en el ecotono (bosque de encino y bosque tropical) ubicado en el Ejido de San Nicolás de los Montes enclavado en la Huasteca potosina se estudió la abundancia y densidad del jaguar Panthera onca) y la abundancia relativa (IAR) de seis de sus presas potenciales, armadillo (Dasypus novemcinctus), coatí (Nasua Narica), pecarí de collar (Pecari tajacu), venado temazate (Mazama temama), venado cola blanca (Odocoileus virginianus) y tuza real (Cuniculus paca). La abundancia del jaguar se estimó con base en trampeo fotográfico, la densidad por medio del programa de cómputo CAPTURE. El IAR se calculó con tres metodologías (transectos parcelas y trampas-cámara). Además, por medio de encuestas se determinó el índice de importancia cultural... |
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Palavras-chave: Abundancia; Jaguar; Presas; Valor cultural; Conocimiento; Abundance; Prey; Cultural value; Knowledge; Maestría; Ganadería; Fauna silvestre. |
| Ano: 2009 |
URL: http://hdl.handle.net/10521/106 |
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| Marinoni,Luciane; Almeida,Gisele Luziane de. |
| During one year of the project called "Survey of the Entomological Fauna in Paraná State" (henceforth PROFAUPAR), 126,340 adult specimens of Trichoptera were collected with light trap. The individuais of the family Hydropsychidae were identified and a list of species is presented. Eighteen species in four genera were identified. From this, S. (R.) discalis Flint, 1972,5. (R.) paramnsis Flint, 1983;S (R.) spinulosa Flint, 1972 are for the first time registered for Brazil and Leptonema sparsum (Ulmer, 1905), Macrostemum hyalinum (Pictet, 1836), S. (Smicridea) albosignata Ulmer, 1907; S. (Rhyacophylax) dentifera Flint, 1983; S. (R.) iguazu Flint, 1983; S. (R.) piraya Flint, 1983; S. (R.) unguiculaia Flint, 1983; S. (R.) vermiculata Flint, 1978 and S. (R.)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Trichoptera; Hydropsychidae; Abundance; Seasonality; Species rich-ness; Light trap; Paraná; Brazil. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752000000100025 |
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| Almeida,Gisele Luziane de; Marinoni,Luciane. |
| From 126,340 adult specimens of Trichoptera captured with light trap during one year of the project called "Survey of the Entomological Fauna in Paraná State" (Paraná, Brazil), 6,375 belong to the family Leptoceridae. The individuals of the family were identified and a list of species is presented. The following species are recorded for the first time to Paraná State: Achoropsyche duodecimpunctata (Navas. 1916); Nectopsyche aureovittala Flint, 1983; Nectopsyche fuscomaculata Flint, 1983; Nectopsyche muhni (Navas, 1916); Nectopsyche separata (Banks, 1920); Nectopsyche ortizi Holzenthal, 1995; Nectopsyche splendida (Navas, 1917) and Tripleclides gracilis (Burmeister, 1839). Discussion on individual abundance and species seasonality are also presented. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Trichoptera; Leptoceridae; Abundance; Seasonality; Species richness; Light trap; Paraná; Brazil. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752000000200005 |
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| Hostim-Silva,Maurício; Ribeiro,Gisela Costa; Clezar,Leandro; Ledo,Blanca Sierra de. |
| Attempting to contribute with the knowledge about the bioecological aspects concerning the youth forms of M. furnieri (Desmarest, 1823) and C. leiarchus (Cuvier, 1830) from Itacorubi mangrove, 15 samplings were taken from January 1988 to March 1989. Using casting and entangle nets, a total of 308 individuais from these species were captured. Their abundanee were: M. furnieri N = 197 (64,0%); C. leiarchus N = 111 (36,0%). The relative frequency and range of total weights and lengths were studied. Concerning spatial distribution of the species, it was observed that M. furnieri occurred in all areas and C. leiarchus was not captured only in "D" area (Sertão River). During the anual cycle the two species occurred jointly. The results emphasize other authors... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sciaenidae; Mangrove; Abundance; Distribution. |
| Ano: 1992 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751992000200011 |
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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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| Bellizia, L.L.; Pan, J.; Venerus, L.A.. |
| Argentine hake Merluccius hubbsi represents nowadays the main fishery resource of the Argentine Sea, in spite of the fact that the percentage of captures related to total fishery production has fallen down 30% in the last decade. The abundance and distribution of hake eggs and larvae in an intense spawning area in front of Isla Escondida (Chubut province), are analyzed. This phenomena was studied from a comparative-historical point of view allowing to apppreciate the evolution of a resource at present undergoing an overfishing pressure, capable of pushing it to collapse. Since 1973 maximum egg densities diminished and, if total egg production is considered a reliable index for recruitment prediction, no signs of overcoming stocks can be seen. On the other... |
| Tipo: Theses and Dissertations |
Palavras-chave: Fish larvae; Fish eggs; Abundance; Spawning; Spawning; Fish larvae. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/1477 |
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| Pérez-Cao, H.. |
| Entre los años 2000 - 2003 se evaluó la abundancia y distribución de delfines toninas en áreas del Archipiélago Sabana-Camagüey, específicamente en zonas adyacentes a Cayo Coco y en la zona norte de Matanzas. Se realizaron 12 salidas de campo, seis en cada área, recorriéndose un total de 2 007,8 millas náuticas, para un total de 322 h 79 min. Durante estas salidas se registraron cada 30 minutos variables oceanográficas a lo largo de transectos lineales y utilizando la técnica de fotoidentificación se cuantificaron los avistamientos de delfines, registrando el número de individuos, tamaño de grupo, la conducta y número de crías. Para el análisis se hizo una diferenciación por subzonas (5 subzonas), estaciones (lluvia y seca), y horario del día (mañana y... |
| Tipo: Theses and Dissertations |
Palavras-chave: Abundance; Distribution; Marine mammals. |
| Ano: 2004 |
URL: http://hdl.handle.net/1834/4603 |
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| Registros recuperados: 298 | |
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