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  • Marine molluscs  (22)
  • Geodesy
  • Instituto Oceanográfico de la Armada, Guayaquil, Ecuador  (23)
  • Springer  (1)
  • 2005-2009  (24)
  • 1950-1954
  • 2008  (24)
  • 1
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    Bivalvos del Golfo de Guayaquil (2008)
    Instituto Oceanográfico de la Armada, Guayaquil, Ecuador
    Details
    Publication Date: 2021-05-19
    Description: El propósito de este catálogo de los bivalvos de la plataforma del Golfo externo, es complementar los conocimientos de los moluscos del área mesolitoral y de otras áreas del Ecuador y actualizar la diversidad y distribución de los moluscos bivalvos.
    Description: Incluye ref.bibl., ilus.
    Description: Published
    Description: Bivalvos
    Keywords: Marine molluscs ; Check lists
    Repository Name: AquaDocs
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  • 2
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    Especies de moluscos y grupos de invertebrados marinos intermareales más comunes de las Islas Galápagos, durante el tercer crucero insular del B/I Orion, marzo del 2001 (2008)
    Instituto Oceanográfico de la Armada, Guayaquil, Ecuador
    Details
    Publication Date: 2021-05-19
    Description: Con este aporte al mejor conocimiento de los invertebrados marinos intermareales en 10 islas se pretende ir completando la base de datos de bentos marino de Galápagos.
    Description: From of observations on the rocky substrate of the intertidal zone, realized at ten (10) islands of the Galápagos Archipelago: Pinta island (Ibbetson cape), Marchena I. (Montalvo cape), Genovesa I. (Darwin bay), San Salvador (James bay), Fernandina I. (Espinoza point), Santa Cruz I. (Academy and Tortuga bays), Isabela I. (General Villamil port), Floreana I. (Velasco Ibarra port), Española I. (Suarez point) and San Cristobal I. (Pitt point). Seven (7) phyla of invertebrates organisms were founded, which are the most common, abundance and frequents on the rocky substrate of the intertidal zone: Porifera, Coelenterate, Annelid, Mollusk, Arthropod, Brizoa and Echinodermata. A total of thitty seven specie of organisms were identified, of which twenty seven are Molluscks (19 gastropods, 6 Bivalve and 2 Poliplacophora); Seven (7) specie are Echinoderms (4 Echinoids, 1 Holothuroids, 1 ophiura and 1 Asteroid; Two (2) specie Arthropods (1 Cirripedia and 1 decapoda), 1 annelid specie (polichaeta), also organisms that belong to phyla: Porifera (sponge), Coelenterata (anemone) and Briozoa. The most common and frequent species of the Galapagos Islands intertidal zone is the crustacean Grapsus grapsus or zayapa crab. On second place, may be considered the gastropods mollusks Plicopurpura columellaris and Nodilittorina galapagensis, and on third place the echinoderms: Eucidaris thouarsii (erizo lapicero) and Lytechinus semituberculatus (erizo verde). The islands with the higher marine biodiversity of invertebrates in the intertidal zone area: San Salvador (James Bay) and Fernandina (Espinoza point), each one with sixteen (16) specie. The following islands are Isabela (General Villamil port) and Genovesa (Darwin bay). The lower biodiversity were observed on Marchena (Montalvo point) and Pinta (Ibettson cape). From the two islands, Marchena is considered like the more poor. There is the possibility that the worlf Island has the lower intertidal biodiversity among all the Galapagos Islands.
    Description: Incluye ref.bibl., grafs.
    Description: Published
    Keywords: Biodiversity ; Zoobenthos ; Marine molluscs ; Biodiversity ; Cruises ; Marine invertebrates ; Zoobenthos ; Oceanic islands
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  • 3
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    Moluscos bivalvos de la plataforma continental de Manabí, Ecuador (2008)
    Instituto Oceanográfico de la Armada, Guayaquil, Ecuador
    Details
    Publication Date: 2021-05-19
    Description: El presente estudio tiene como propósito principal el dar a conocer las especies de bivalvos de la plataforma superior interna de la Provincia de Manabí; relacionándolos con la profundidad, tipo de sedimento, parámetros químicos, abundancia relativa y distribución de estos organismos. Considera que la información recopilada a través de estos trabajos, permitirá tener el cuadro referencial de las condiciones bióticas y abióticas de los bivalvos marinos de la plataforma superior interna de la Provincia de Manabí.
    Description: Incluye ref.bibl., grafs., tbls.
    Description: Published
    Description: Bivalvos, Veneridae
    Keywords: Geographical distribution ; Marine molluscs ; Geographical distribution ; Abundance
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  • 4
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    Efectos de los moluscos incrustantes en maderas no tratadas en los Puertos de Esmeraldas, Manta, Salinas, Posorja y Base Naval (Ecuador) (2008)
    Instituto Oceanográfico de la Armada, Guayaquil, Ecuador
    Details
    Publication Date: 2021-05-19
    Description: El propósito de esta primera contribución al conocimiento de los moluscos perforadores de madera en el Pacífico Este Ecuatoriano, es conocer el tipo de madera más resistente y la más atacada por estos organismos, además, medirlos para evaluar el daño ocasionado en un tiempo determinado y por último recomendar la madera más resistente al ataque de los organismos perforadores y que debe usarse en construcciones de muelles, compuertas de camaroneras, base habitacionales (Pilares de casas), embarcaciones, etc. Con este aporte se estaría proporcionando orientación al pueblo ecuatoriano, para mejorar la economía del país en la utilización adecuada de nuestros recursos en el medio marino.
    Description: Incluye ref.bibl., grafs., ilus., tbls.
    Description: Published
    Keywords: Harbours ; Wood ; Marine molluscs ; Harbours ; Fouling organisms ; Wood
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  • 5
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    Moluscos e invertebrados marinos más comunes en cinco islas del Archipiélago de Galápagos, durante el primer crucero insular del B/I Orión (2008)
    Instituto Oceanográfico de la Armada, Guayaquil, Ecuador
    Details
    Publication Date: 2021-05-19
    Description: Este trabajo es el resultado de la macrofauna encontrada, que de ninguna manera refleja la totalidad de su biodiversidad, solo es el inicio de futuras investigaciones que se necesitan realizar en nuestro país y constituye una "guía" preliminar de orientación que no incluye la meiofauna y la microfauna las que son motivo de futuras investigaciones.
    Description: Eleven sediments samples were obtained from 3 bays and two ports that were plot of five islands of the Galapagos Islands (Fig.1bb), they are: San Cristobal (Bahia Naufragio), Floreana(Pto. Velasco Ibarra), Isabela (Pto. General Villamil), Genovesa (Bahia Darwin), and Santa Cruz ( Bahía Academica), (Fig.2bb). There were 109 organisms (Table 1), which are represented for 8 phylum: Porifera, Coelenterata, Annelida (Polichaeta), Mollusca (Bivalves, Gastropod and Poliplacofora), Arthoropod (Pycnogónida, Crustacean), Briozoa. Echinodermata (Holothuroidea, Equinoidea) and Chordate (Hemichordata, CEphalochordata). In the interdinal zone of the Isabela island there were 12 species of invertebrates of which the gastropod Thais melones and the marine cucumber Holothuaria theeli were the most abundace. It was observed that the organic or biogenic sediments between 5 to 25 mt of depth, are compound for more less the 90% of broken shell of mollusks and there is a low abundace and diversity of organisms. The polichaetes are the most dominants, although, on the submerge rock or stone are the major biodiversity of the marine invertebrates. In the Velasco Ibarra Bay, from Floreana island, between 5 to 10 mt depth on a small rock obtained with a Van Veen dredge a great biodiversity of species were found.
    Description: Incluye ref.bibl., grafs., tbls.
    Description: Published
    Keywords: Biogeography ; Biodiversity ; Marine molluscs ; Marine invertebrates ; Biogeography ; Biodiversity ; Cruises
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  • 6
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    Determinación del datum vertical en La Libertad, Ecuador (2008)
    Instituto Oceanográfico de la Armada, Guayaquil, Ecuador
    Details
    Publication Date: 2021-05-19
    Description: Normalmente en los levantamientos geodésicos se utilizan dos tipos de referencias: las coordenadas de origen y el datum vertical: Las primeras están en función del elipsoide o superficie matemática de referencia que más se ajusta al área, y el segundo; por la determinación del nivel medio del mar con 19 años de observación. El Ecuador tiene como elipsoide de referencia, el Internacional y el datum horizontal del punto localizado en la Canoa, Venezuela (Provisional South American Datum 1956, PSAD 56), cuya coordenadas han sido transportadas a nuestro país mediante redes geodésicas. En 1948, el Ecuador instaló una estación mareográfica en la Libertad (Lat. 020° 12'S., Long. 80° 55'W) y a la determinación del datum vertical se refiere el presente trabajo.
    Description: Incl. ref.bibl., grafs.
    Description: Published
    Keywords: Geodesy ; Datum levels ; Geodesy
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  • 7
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    Contribución al conocimiento de los organismos perforadores de maderas en la Isla Baltra, Archipiélago de Galápagos, Ecuador (2008)
    Instituto Oceanográfico de la Armada, Guayaquil, Ecuador
    Details
    Publication Date: 2021-05-19
    Description: En la Isla Baltra, entre abril a agosto/89 se pusieron once tipos de diferentes maderas expuestas al medio ambiente marino, habiéndose encontrado 7 organismos que degradaron la madera, de los cuales 6 son moluscos bivalvos: Bankia carinata, B. gouldi, Lyrodus medilobata, l. pedicellatus, Teredo bartschi, T. furcifera y un isópodo del género limnoria. De los Bivalvos perforadores, T. furcífera ha sido la especie más abundante y frecuente, seguida de L. pedicellatus. Las especies ovadas que se encontraron fueron: T. furcífera, L. pedicellatus, L. medilobata y T. bartschi, de las cuales T. furcífera se presentó como la más abundante y frecuente. la madera que presentó el mayor número de hembras con huevos fue el laurel. De los 11 tipos de maderas expuestos al medio marino, las menos degradadas o "resistentes" en su orden fueron: Moral, Chanul, laurel, Alcanfor y palo de Vaca, mientras que las más degradas que se consideran "no recomendables" para construir estructuras que estén expuestas al medio marino son: Nato, Mangle, Tillo, Figueroa, Guayacán y Fernan Sánchez. Al isópodo Limnoria sp. se lo encontró degradando a tres de los once tipos de maderas: Al Laurel, Tillo y fernan Sánchez, siendo en el Laurel donde se encontró el mayor número de isópodos.
    Description: In Baltra island, between april to august/89, eleven different types of woods were deposited on the bottom of the sea and exposed to the effect of boring molluscs; seven organisms were founded: Bankia carinata, B. gouldi, Lyrodus medilobata, l. pedicellatus, Teredo bartschi, T. furcifera and one Isopoda which belongs to the genus Limnoria. of all boring molluscs T. furcifera was the most abundant and frequent, being in second place was L. pedicellatus. The female species with eggs were: T. furcífera, L. pedicellatus, L. medilobata and T. bartschi, of which T. furcífera was the most abundant and frequent. The wood that showed the highest number of female with eggs was the Laurel. Of the eleven different types of wood exposed to the marine environment, the less damaged or more ressitent were: Moral, Chanul, Laurel, Alcanfor y Palo de vaca, while that the woods more degradated and which are not good for use in a construction of piers and boats that are exposed to the marine environment are: Nato, Mangle, Tillo, Figueroa, Guayacán y Fernan Sanchez. The isopodos Limnoria sp. was observed infesting three of the eleven types of diferents woods which were: Laurel, Tillo y Fernan Sanchez. In the Laurel wood the highest number of isopoda was observed
    Description: Incluye ref.bibl., grafs., tbls.
    Description: Published
    Keywords: Islands ; Wood ; Marine molluscs ; Fouling organisms ; Islands ; Wood
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  • 8
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    Estudio de los moluscos bivalvos perforadores de la madera Rhyzophora harrisonii (Mangle) en la costa ecuatoriana (2008)
    Instituto Oceanográfico de la Armada, Guayaquil, Ecuador
    Details
    Publication Date: 2021-05-19
    Description: Se identifican 12 especies de moluscos bivalvos perforadores de la madera Rhyzophora harrisonii (Mangle) en la costa ecuatoriana, de las cuales 11 especies son primeros registros para el Ecuador, ampliándose de esta manera su distribución anterior. Se describen las principales características taxonómicas de cada género y especie encontrada, agregándose dibujos de las paletas que se usaron en la identificación. Los resultados se presentan en gráficos, figuras, histogramas, tablas y mapas de distribución areal de las especies. en las conclusiones se discuten detalles que se han encontrado en los puertos de Esmeraldas, Manta, Salinas, Posorja y Base Naval Sur (Golfo de Guayaquil interior), completándose esta información con recomendaciones para cada puerto.
    Description: Incluye ref.bibl., grafs.,ilus., tbls.
    Description: Published
    Description: Bivalvos, Mangle
    Keywords: Wood ; Marine molluscs ; Fouling organisms ; New records ; Wood
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  • 9
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    Presencia de Pterópodos tecosomados en el Golfo de Guayaquil (2008)
    Instituto Oceanográfico de la Armada, Guayaquil, Ecuador
    Details
    Publication Date: 2021-05-19
    Description: Se estudiaron los pterópodos tecosomados en ocho estaciones realizads en Enero-Febrero de 1978 en el Golfo de Guayaquil. Se encontraron tres especies: Creseis chierchiae, C. virgula y Limacina trochiformis; predominando C. chierchiae. Para C. virgula, el silicato quizás sea un factor limitante en su distribución.
    Description: Incluye ref.bibl., ilus., tbls.
    Description: Published
    Description: Creseis chierchiae, Creseis virgula, Limacina trochiformis
    Keywords: Marine molluscs ; Distribution records
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  • 10
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    Estado actual del recurso malacológico (Bivalvos y gasterópodos) de la zona infralitoral del Golfo de Guayaquil (2008)
    Instituto Oceanográfico de la Armada, Guayaquil, Ecuador
    Details
    Publication Date: 2021-05-19
    Description: Del análisis de 144 muestras de sedimento (Tabla 1), obtenidas en seis (6) cruceros realizados en el Estero Salado y los canales de Cascajal, Jambelí y del Morro, así como al Oeste de la Isla Puná en el Golfo de Guayaquil (Fig.1); se identificaron 52 especies de moluscos vivos de los cuales 31 son bivalvos y 21 gasterópodos. Se da a conocer la distribución areal de las especies con sus principales características ecológicas, se relacionan con el tipo de sedimento, profundidad y hábitat para determinar los ecosistemas marinos, estuarinos y barreras ecológicas. Se encontró que las especies que podrían considerarse como posibles recursos de importancia económica y alimenticia en la Zona infralitoral estudiada son: Mytella strigata, Mytella guyanensis, Crassostrea columbiensis y anadara turberculosa. De las cuales M. strigata se presentó como la más abundante y con una distribución en forma de un gran parche en el Estero Salado Superior, en un ambiente estuarino. M. guyanensis y C. columbiensis se presentaron raros en la Zona Infralitoral, pero son más comunes y abundante en la Zona Mesolitoral y constituyen un importantísimo recurso alimenticio, que se lo debe cultivar y explotar racionalmente. En cuanto a Anadara tuberculosa fue encontrada solamente al Oeste de la Isla Puná en un ambiente con influencia de aguas oceánicas de mayor salinidad, en el Golfo de Guayaquil exterior. Se considera que ésta importante especie es poco común en el Golfo. La mayor diversidad se encontró en el Estero Salado Inferior y al Oeste de la Isla Puná donde predomina un sedimento arenoso y bien clasificado (Soledispa, 1987); mientras que la menor diversidad y mayor pobreza se la observó en los canales de Jambelí y Cascajal donde predomina el limo-arcilloso proveniente del Río Guayas, considerándose a este sedimento mal clasificado y leptocúrtico (Jácome y Llanos, 1987).
    Description: From the analysis of 144 benthic samples obtained on six cruises in the Estero Salado: the Cascajal, Jambelí and El Morro channel; also the West and South of Puna island in the Gulf of Guayaquil, were identified 52 species of living molluscks, 31 of which are Bivalvia and 21 are Gastropds. the areal distribution with the principal ecological characteristics are given and the relationship with the texture of sediment, depth, habitat are made for understanding the marine ecosystem and the ecological border. The species with economic importance that are living in the infra-littoral zone are Mytella strigata, Mytella guyanensis, Crassostrea columbiensis y Anadara tuberculosa; of which M. strigata was the most abundant with the great distribution in an estuarine environment. M. guyanensis and C. columbiensis are rares in the infra-littoral zone, because they have preference for living in the intertidal zone and are very important economic resource, that must culture. Anadara tuberculosa was found only to the west of Puna island and environment with marine influence in the Gulf of Guayaquil (External zone); this specie is considered no common. the highest diversity was found in the outer part of Estero Salado and the west of Puna island, where there is a sandy sediment very good classified (Soledispa, 1987). While the lower diversity and poorness were observed in the Jambelí and Cascajal channels, where there are muddy and fluvial sediments from the Guayas river. This sediment is good classified and leptocurtic (Jácome y Llanos, 1987).
    Description: Incluye ref.bibl., grafs., maps., tbls.
    Description: Published
    Keywords: Malacology ; Distribution ; Estuaries ; Species diversity ; Malacology ; Marine molluscs ; Check lists ; Cruises ; Distribution ; Species diversity ; Estuaries
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  • 11
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    Pterópodos tecosomados y heterópodos (Gasterópodos) como bioindicadores del evento "El Niño" 1992, en la estación fija "La Libertad", Ecuador (2008)
    Instituto Oceanográfico de la Armada, Guayaquil, Ecuador
    Details
    Publication Date: 2021-05-19
    Description: Acogiendo la recomendación del "Estudio Regional del fenómeno El Niño" (ERFEN), de la Comisión Permanente del Pacífico Sur (CPPS), de buscar nuevos organismos que puedan ser utilizados como bioindicadores tempranos de el fenómeno "EN", desde Junio/90 se viene estudiando quincenal y mensualmente a los Pterópodos tecosomados y Heterópodos en la estación fija "La Libertad", que está localizado 10 millas costa afuera en la Latitud 02°06'00" y Longitud 81°03'43''.
    Description: The present is a research work carried out from Jun/90 until December/95 on Pteropods and Heteropods at "La Libertad" station, located 10 miles offshore the ecuadorian coast. Fourteen planktonic gastropd species were identified, nine of which are Pteropods and 5 Heteropds. From the analysis of the Pteropods and heteropods as bioindicators of "El Niño" (EN) Event, the characteristics and appreciations of "no-Niño", "pre-Niño", "El Niño" (EN) 1992 and "post-Niño" period are presented. The relationship between species, surface temperature, salinity and subsurface temperatures from 0 to 100 meter depth is defined. Observations on taxonomic characteristics ecology and behavior of each species in each "EN" period are described and those which may be considered as bioindicator of "EN". Also there is a discussion about the most important associations of Pteropods and Hetropods and some apprecaitons of the observations during the last five and half years of research work.
    Description: Incluye ref.bibl., ilus., grafs.
    Description: Published
    Description: El nino phenomena
    Keywords: Indicator species ; Marine molluscs ; Distribution records ; Organism morphology ; Indicator species ; Marine meteorology
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    Type: Journal Contribution , Non-Refereed , Article
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  • 12
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    Presencia de Limnoria sp., perforador marino de maderas en los principales puertos del Ecuador (Crustacea: Isopoda: Flabellifera) (2008)
    Instituto Oceanográfico de la Armada, Guayaquil, Ecuador
    Details
    Publication Date: 2021-05-19
    Description: El propósito de estas investigaciones, es contribuir al conocimiento sobre la presencia de Limnorias en los principales puertos del Ecuador, además evaluar el daño que ocasionan.
    Description: Incluye ref.bibl., ilus.
    Description: Published
    Description: wood-boring organisms, harbors
    Keywords: Geographical distribution ; Environmental factors ; Salinity ; Temperature ; Marine molluscs ; Marine organisms ; Geographical distribution ; Oceanographic data ; Environmental factors ; Salinity ; Temperature
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  • 13
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    Poliquetos y moluscos macrobentónicos de la zona intermareal y submareal en la Provincia del Guayas, (Monteverde, Ecuador) (2008)
    Instituto Oceanográfico de la Armada, Guayaquil, Ecuador
    Details
    Publication Date: 2021-05-19
    Description: Por la gran importancia que tiene la macrofauna se ha querido contribuir dando a conocer por primera vez, las especies de poliquetos y moluscos que existen en el área de Monteverde en la Provincia del Guayas.
    Description: Five stations of the sandy substrates of the intertidal zone belong to Monteverde were analyzed and were identified represented by relatively few poliquetos like Nephtys singularis and Neanthes succinea. Among the mollusks the gasterópoda Olivella simistriata is the species that predominates in limits of the low tide a sandy substrate relatively clean. In the subtidal zone 15 stations were analyzed, as result 19 species of mollusks were identified being the class bivalvia or Pelecypoda the most abundant with their species acrita Nuculana acrita and Nucula paytensis. Of the gasterópoda the most abundant and frequents genus was Cylinchna sp. and, of the Escafópoda the genus Fustiaria sp. Among the benthónic polichaetos, the species Lumbrineris bassis is most representative of the area and the sandy slime is normally in substrate. Figures of relative abundance appear, is present at percentage, frequency, diversity and richness in the area of Monteverde.
    Description: Incluye ref.bibl., grafs.
    Description: Published
    Keywords: Intertidal environment ; Benthos ; Species diversity ; Benthos ; Marine molluscs ; Species diversity ; Intertidal environment
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  • 14
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    Malacofauna bentónica existente en los alrededores de la ciudad de Guayaquil (Estero Salado y Río Guayas), durante 2003 (2008)
    Instituto Oceanográfico de la Armada, Guayaquil, Ecuador
    Details
    Publication Date: 2021-05-19
    Description: Este trabajo que es una orientación y un incentivo para que se desarrollen futuras investigaciones sobre los moluscos existentes alrededor de la ciudad de Guayaquil.
    Description: Eleven places around the Guayaquil city (Estero Salado and Guayas River), were studied and eleven species of mollusks were founded of which seven (7) belong to Bivalvia class and four (4) to the Gastropoda class. The families of the Bivalvia are: Ostreidae, Mytilidae, Dreissenidae, Veneridae, Tellinidae y Corbiculidae and the Gastropoda class are: Neritidae, Potamididae, Littorinidae y Melampidae. The Bivalvia families most abundant are: Ostreidae y Dreissenidae and the Gastropoda is Potamididae. The higher biodiversity is around of the Portete bridge and the lowest biodiversity was observed at the Guayas River.
    Description: Incluye ref.bibl., ilus.
    Description: Published
    Keywords: Malacology ; Benthos ; Biodiversity ; Malacology ; Marine molluscs ; Biodiversity ; Benthos
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  • 15
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    Contribución al conocimiento de los bivalvos vivos en los Esteros de El Salado y Cascajal del Golfo de Guayaquil interior (2008)
    Instituto Oceanográfico de la Armada, Guayaquil, Ecuador
    Details
    Publication Date: 2021-05-19
    Description: Con esta contribución se pretende completar la información de los moluscos bivalvos vivos de los Esteros de El Salado y Cascajal del Golfo de Guayaquil.
    Description: Incluye ref.bibl., maps., tbls.
    Description: Published
    Description: Bivalvos
    Keywords: Marine molluscs ; Distribution records
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  • 16
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    Estudio comparativo de los moluscos bivalvos perforadores de las maderas más resistentes (Laurel, moral, palo de vaca) y la más "atacada" (Mangle) en la costa ecuatoriana (2008)
    Instituto Oceanográfico de la Armada, Guayaquil, Ecuador
    Details
    Publication Date: 2021-05-19
    Description: Se identifican los bivalvos perforadores de una de las maderas más atacadas como el mangle y las especies encontradas más resistentes. Se analizan las diferencias encontradas a nivel de especies y el porcentaje de infestación en cada madera, en los Puertos de Esmeraldas, Manta, Salinas, Posorja y Base Naval Sur de la costa ecuatoriana. Se presentan frecuencias, gráficos y distribución de los organismos encontrados en los puertos mencionados.
    Description: Incluye ref.bil., grafs., tbls.
    Description: Published
    Description: Bivalvos perforadores
    Keywords: Mangroves ; Wood ; Marine molluscs ; Fouling organisms ; Mangroves ; Wood
    Repository Name: AquaDocs
    Type: Journal Contribution
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  • 17
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    Gasterópodos planctónicos (Pterópodos y Heterópodos) como bioindicadores de los eventos "El Niño" 1992 y 1997 - 1998 en la estación fija "La Libertad", Ecuador (2008)
    Instituto Oceanográfico de la Armada, Guayaquil, Ecuador
    Details
    Publication Date: 2021-05-19
    Description: Con este aporte al mejor conocimiento de los Pterópodos y Heterópodos, el INOCAR cumple con una recomendación de la Comisión Permanente del Pacífico Sur (CPPS) de estudiar los organismos bioindicadores con la finalidad de encontrar en un futuro, especies que se puedan utilizar como Biondicadores tempranos del Evento "El Niño".
    Description: From the analysis of 135 zooplankton surface samples, obtained each 15 days since june/90 to mayo/98 at the station "La Libertad", the position is 10 miles off shore the coast of Santa Elena Peninsula, Ecuador. 15 planktonic gastropds were identified, of which 10 are Pteropods and 5 are Heteropods. From the 15 species founded, 9 are considered about good biological indicators of the marine ecosystem, including anomalous or unstable conditions and the warm event "El Niño", they are the following:Hyalocylis striata, Limacina trochiformis, Creseis virgula, Creseis acicula, Desmopterus papilio, Atlanta peroni, Atlanta lesueuri, Atlanta gaudichaudi y Atlanta turriculata. The 6 specie that have been showed few abundance and no allway respond to the variations of the marine ecosystem near the coast of Ecuador, they are: Firoloida desmaresti, Cavolinia uncinata, Cavolinia longirostris, Diacria quadridentata, Limacina bulimoides y Clio pyramidata. With the intention to know better the marine environment variation of each year since june/90 to mayo98, in this paper an analysis of the presence and relative abundance of the Pteropods and Heteropods founded is presented. These percentage and the different marine environment condition are relationed and are included "normal" and "anomalous or unstable" condition and the warm event "El Niño". For a better knowledment of each one species in the marine ecosystem of the ecuadorian coast, and abstract appreciation of the marine environment relation and the total and relative abundances, development of the organisms and the shell, is presented, and when forming association the different populations. For a better observation of the change on the total abundance of each one species, two tables and five figures are presented, where show the variation of the relations between the species and the "normal" or "anomalous" in the marine environment 10 miles off shore the ecuadorian coast.
    Description: Incluye ref.bibl.,grafs., tbls.
    Description: Published
    Keywords: Geographical distribution ; Indicator species ; Marine molluscs ; Indicator species ; Geographical distribution ; El Nino phenomena ; Fixed stations
    Repository Name: AquaDocs
    Type: Journal Contribution , Non-Refereed , Article
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  • 18
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    Biología y distribución de la familia Aplysiidae (Babosas de mar), en la zona intermareal del Ecuador, desde el 2003 al 2005 (2008)
    Instituto Oceanográfico de la Armada, Guayaquil, Ecuador
    Details
    Publication Date: 2021-05-19
    Description: El propósito de este trabajo es contribuir a conocer que especies de vaquitas o babosas de mar tenemos en la costa del Ecuador, cual es su abundancia, distribución, densidad, hábitat e importancia que tienen estas especies, dar a conocer sus características taxonómicas, que permitan ser identificadas por otros investigadores para que puedan desarrollar otros trabajos de investigación.
    Description: Of the study of 25 localities, in all the coast of continental Ecuador, belonging, to the Provinces of Esmeraldas, Manabí, Guayas and El Oro, obtained during three years, 2003, 2004 and 2005. In 12 sites, were observed two species of mollusks that belong to two genus of family APLYSIIDAE in 12 sites Dolabrifera dolabrifera was observed, but only in one site of them "Las conchas", located between La Libertad and Salinas, one specimen of Aplysia californica was observed. During year 2003, the family APLYSIIDAE, was observed in three sites of the Ecuadorian coast, located in the Bay of Santa Elena. During the 2004, in four sites (3 in Manabí Province and one in the Guayas Province). During in the 2005 in 12 places, was observed, six specimens in the Manabí Province and six the Guayas Province. These genuses were not observed in the Esmeraldas Province and El Oro Province. The maximum weight of the organism measure in Dolabrifera dolabrifera with 158 grams and the measured were: length 41 mm, height 25 mm; the atrophied shell with length 20 mm and height 12 mm. The place where the greater relative abundance of Dolabrifera dolabrifera was in Los Frailes of the National Park Machalilla (South margin or left side of the bay) with 160 oreganisms/m² and the smaller abundance registered was in Port Cayo, with 1 organism/m², observed in the 2005. The taxonomic characteristics of each species, is given, the maximum and minimum weight of the organism and the measures of the shells, as well as the distribution and relative abundance along the Ecuador coast.
    Description: Incluye ref.bibl., ilus., grafs.
    Description: Published
    Keywords: Geographical distribution ; Intertidal environment ; Marine molluscs ; Abundance ; Habitat ; Coastal zone ; Geographical distribution ; Intertidal environment ; Organism morphology
    Repository Name: AquaDocs
    Type: Journal Contribution
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  • 19
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    Descripción de un nuevo género y dos especies de moluscos, (Bivalvia), para el Pacífico ecuatoriano (2008)
    Instituto Oceanográfico de la Armada, Guayaquil, Ecuador
    Details
    Publication Date: 2021-05-19
    Description: Se describe un nuevo género :Eucrassinella y dos nuevas especies: Eucrassinella manabiensis y E. aequatorialis; que pertenecen a la familia Crassatellidae. Se agrega un cuadro comparativo de los géneros ya existentes con el nuevo y otro cuadro de las dos especies recién descritas. De los ejemplares recolectados ocho pertenecen a E. manabiensis y uno a E. aequatorialis. Las dos especies fueron encontradas en la plataforma de la provincia de Manabí y la primera también en los sedimentos recientes del Archipiélago de Jambelí. (Provincia de El Oro, Ecuador).
    Description: Incluye ref.bibl., ilus.
    Description: Published
    Description: Eucrassinella, Eucrassinella manabiensis, Eucrasinella aequatoriales, Crassatellidae,
    Keywords: Marine molluscs
    Repository Name: AquaDocs
    Type: Journal Contribution
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  • 20
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    Pterópodos y heterópodos del Golfo de Guayaquil (2008)
    Instituto Oceanográfico de la Armada, Guayaquil, Ecuador
    Details
    Publication Date: 2021-05-19
    Description: Del análisis de 17 muestras del zooplancton, tomadas en el Golfo de Guayaquil, de 4 cruceros correspondientes a Mayo de 1973, Febrero de 1978, Marzo 1982 y Noviembre 1983, se encontraron 5 especies de Pterópodos y 2 de Heterópodos, que son: Creseis chierchiae, C. acicula, Limacina trochiformis, L. inflata, Atlanta gaudichaudi y a. lessueuri. Se da una descricpión morfológica general del organismo, resaltando sus características taxonómicas más importantes de la especie y se complementa con algunas preferencias ecológicas de cada una de ellas. Se presenta un mapa con las estaciones de los diferentes cruceros y dos tablas mostrando la posición y la presencia de las especies en los diferentes años.
    Description: Incluye ref.bibl., tbls., ilus.
    Description: Published
    Keywords: Geographical distribution ; Organism morphology ; Marine molluscs ; Geographical distribution
    Repository Name: AquaDocs
    Type: Journal Contribution
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  • 21
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    Moluscos incrustantes de maderas en el mar ecuatoriano (2008)
    Instituto Oceanográfico de la Armada, Guayaquil, Ecuador
    Details
    Publication Date: 2021-05-19
    Description: Del análisis de 12 tipos de diferentes maderas expuestas al medio marino, durante 3, 8 y 12 meses, entre Julio de 1984 y Junio de 1985; en cinco puertos de la costa Ecuatoriana, se encontró 8217 paletas, que pertenecen a 14 especies de moluscos bivalvos perforadores; de las cuales 13 pertenecen a la familia TEREDINIDAE y una a PHOLADIDA. Las especies más abundantes fueron: teredo fucífera con el 33%; Bankia gouldi con el 32% y Bankia orcutti con el 29,9%. entre las 14 especies encontradas en los cinco puertos estudiados. Bankia destructa fué la única especies que se presentó en todos los puertos o estaciones. En la costa Ecuatoriana, después de tres meses de exposición de las maderas al medio amrino, la especie más dominante fue Bankia orcutti, con el 48,4% y el puerto más afectado fue Posorja. Después de ocho meses, Teredo furcifera, fué la especie más dominante en los puertos de Manta, y Salinas. A los 12 meses Bankia gouldi fué la especies más dominante en el puerto de Esmeraldas. Las maderas duras como el Mangle y el Guayacán fueron los más infestadas, mientras que la menor infestación se observó en el Laurel, Moral y Palo de Vaca. El más alto porcentaje de hembras con larvas, se encontró en el puerto de Manta, con un 45.5% y se observó una preferencia por las maderas menos infestadas, "livianas o suaves" como el Laurel, aunque también se las encontró en menor cantidad en las maderas "duras" y pesadas como el Guayacán y Tillo.
    Description: Incluye ref.bibl., grafs., tbls.
    Description: Published
    Keywords: Wood ; Marine molluscs ; Fouling organisms ; Harbours ; Wood
    Repository Name: AquaDocs
    Type: Journal Contribution , Non-Refereed , Article
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  • 22
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    Nueva distribución de moluscos meiobentónicos (Gasterópoda: Familia Caecidae), en la costa ecuatoriana, 2006 (2008)
    Instituto Oceanográfico de la Armada, Guayaquil, Ecuador
    Details
    Publication Date: 2021-05-19
    Description: El propósito de este trabajo tiene como finalidad reportar por primera vez, la presencia de esta familia Caecidae, los géneros Caecum y Elephantanellum, y siete especies para aguas ecuatorianas ampliando la distribución de estos micromoluscos desde el norte y centro América hasta Ecuador.
    Description: The analysis of the results obtained in a sampling made in the Continental Platform of the Province of Manabí, from Puerto Cayo to Salango and of the subtidal sampling made in the Puntilla de Santa Elena, Ecuador, seven (7) species of micromollusks belonging to family CAECIDAE were identified: Elephantanellum with one species, E. liratocinctum. In genus Caecum two species C. bahiahondaense y C. californicum were identified, two species with similarities, Caecum cf. orcutti, caecum cf. septimentum and two species were not possible to identify them, staying as Caecum sp "a" and "b". In Puerto Cayo was observed the greatest relative abundance and diversity. The CAECIDAE family with all the genus has not been reported for Ecuador before this paper, reason why these reports constitute the first registries for both genus and species mentioned in this work, extending themselves the geographic distribution in the Pacific East, from Baja California to Ecuador, therefore is very important to know the main taxonomic characteristics of the genus and the species, as well as their measures, the previous and the actual distribution, increasing the Ecuadorian marine biodiversity.
    Description: Incluye ref.bibl., ilus., grafs.
    Description: Published
    Keywords: Geographical distribution ; Meiobenthos ; Species diversity ; Meiobenthos ; Marine molluscs ; Geographical distribution ; Species diversity ; New records
    Repository Name: AquaDocs
    Type: Journal Contribution
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  • 23
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    Relación ecológica de Crassinella varians (Bivalvo) y Cibicides bertheloti, F. boueana (Foraminífero) en el Golfo de Guayaquil (2008)
    Instituto Oceanográfico de la Armada, Guayaquil, Ecuador
    Details
    Publication Date: 2021-05-19
    Description: Fueron analizadas 29 muestras de sedimentos procedentes del Golfo de Guayaquil que correspondieron desde 12 m a 1598 m de profundidad. Se estudiaron los foraminíferos y bivalvos, resultado como especies más frecuentes y abundantes: Cibicides bertheloti, F. boueana y Crassinella varians respectivamente. Algunas referencias similares entre las 2 especies fueron determinadas y también una relación inversa en sus porcentajes de abundancia, en las estaciones que estuvieron presentes. Dos mapas de distribución fueron elaborados; así como también tablas de posición de las estaciones, presencia y frecuencia de las dos especies.
    Description: Incluye ref.bibl., ilus., tbls.
    Description: Published
    Description: Crassinella varians, Bivalvia, Cibicides bertheloti, F. boueana
    Keywords: Geographical distribution ; Foraminifera ; Geographical distribution ; Marine molluscs
    Repository Name: AquaDocs
    Type: Journal Contribution
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  • 24
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    VLNDEF Project for Geodetic Infrastructure Definition of Northern Victoria Land, Antarctica (2008)
    Springer
    Details
    Publication Date: 2022-05-30
    Description: Scientific investigations in Antarctica are, for many different reasons, a challenging and fascinating task. Measurements, observations and field operations must be carefully planned well in advance and the capacity of successfully meeting the goals of a scientific project is often related to the capacity of forecasting and anticipating the many different potential mishaps. In order to do that, experience and logistic support are crucial. On the scientific side, the team must be aware of its tasks and be prepared to carry out observations in a hostile environment: both technology and human resources have to be suitably selected, prepared, tested and trained. On the logistic side, nations, institutions and any other organisation involved in the expeditions must ensure the proper amount of competence and practical support. The history of modern Italian Antarctic expeditions dates back to the middle 80’s when the first infrastructures of “Mario Zucchelli Station”, formerly Terra Nova Bay Station, were settled at Terra Nova Bay, Northern Victoria Land. Only a few years later, the first geodetic infrastructures were planned and built. Italian geodetic facilities and activities were, ever since, being constantly maintained and developed. Nowadays, the most remarkable geodetic infrastructures are the permanent Global Positioning System (GPS) station (TNB1) installed at Mario Zucchelli and the GPS geodetic network Victoria Land Network for DEFormation control (VLNDEF) entirely deployed on an area extending between 71° S and 76° S and 160° E and 170° E. These facilities do not only allow carrying out utmost geodetic investigations but also posses interesting capacities on the international multidisciplinary scientific scenario. In order to fully exploit their potentiality, management and maintenance of the infrastructure are crucial; nevertheless, in order to perform high quality scientific research, these abilities must be coupled with the knowledge concerning a proper use and a correct processing of the information that these infrastructures can provide. This work focuses on the different methods that can be applied to process the observations that are performed with GPS technique in Northern Victoria Land, aiming at reaching the highest accuracy of results and assuring the larger significance and versatility of the processing outcomes. Three software were used for the analysis, namely: Bernese v.5.0, Gipsy/Oasis II and Gamit/Globk. The working data sets are (i) the permanent GPS station TNB1 observations continuously performed since 1998 and (ii) the five episodic campaigns performed on the sites of VLNDEF. The two infrastructures can be regarded as neat examples of standard geodetic installation in Antarctica. Therefore, the technological solutions that were adopted and applied for establishing the GPS permanent station and the VLNDEF geodetic network as well as the data processing strategies and the data analysis procedures that were tested on their observation will be illustrated in detail. The results will be presented, compared and discussed. Furthermore, their potentials and role in geodetic research will be carefully described; their versatility will also be highlighted in the foreground of a multidisciplinary Antarctic international scientific activity.
    Description: Published
    Description: 37-72
    Description: 1.8. Osservazioni di geofisica ambientale
    Description: reserved
    Keywords: Antarctica ; Geodesy ; Geodetic Infrastructures ; GPS ; 01. Atmosphere::01.01. Atmosphere::01.01.08. Instruments and techniques
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: book chapter
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