Shallow Waters
Mostrando 1-12 de 52 artigos, teses e dissertações.
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1. ROBUST METHODOLOGY FOR DETECTION OF SPIKES IN MULTIBEAM ECHO SOUNDER DATA
Abstract Currently, during the operation in shallow waters, scanning systems, such as multibeam systems, are capable of collecting thousands of points in a short time, promoting a greater coverage of the submerged bottom, with consequent increase in the detection capacity of objects. Although there has been an improvement in the accuracy of the depths collec
Bol. Ciênc. Geod.. Publicado em: 14/10/2019
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2. Association between deep-water scale-worms (Annelida: Polynoidae) and black corals (Cnidaria: Antipatharia) in the Southwestern Atlantic
ABSTRACT Polynoid scale-worms have been found living as commensals with deep-water antipatharians (commonly known as black corals) in the Potiguar Basin, off Rio Grande do Norte State, Northeastern Brazil. In this paper two polychaete species and four black corals species are redescribed. Benhamipolynoe cf. antipathicola and Parahololepidella cf. greeffi, an
Zoologia (Curitiba). Publicado em: 27/06/2019
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3. Cetacean movements in coastal waters of the southwestern Atlantic ocean
Resumo: Cetáceos foram monitorados em cerca de 700 km da costa sudeste do Brasil (22°S a 25°S) entre 1995 e 2014 com o uso da fotoidentificação. O objetivo deste estudo foi de identificar quaisquer presenças de movimentos de longa distância de indivíduos das espécies monitoradas e discutir suas implicações. Dados de movimentos de longa distância
Biota Neotrop.. Publicado em: 21/03/2019
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4. Heteromysis cocoensis n. sp. (Crustacea: Mysida: Mysidae) from coastal waters of Isla del Coco, Costa Rica
ABSTRACT A survey of the invertebrate fauna of coral reef hard bottom communities in the shallow waters of Isla del Coco yielded a new species of mysid belonging to the genus Heteromysis S. I. Smith, 1873. Heteromysis (Olivemysis) cocoensis, n. sp. was collected from coral rubble at depths of 8 to 34 m. It differs from its congeners by having male pleopods 1
Nauplius. Publicado em: 21/06/2018
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5. Morphology and morphometry of upland lakes over lateritic crust, Serra dos Carajás, southeastern Amazon region
ABSTRACT High-resolution satellite images, digital elevation models, bathymetric and sedimentological surveys coupled with statistical analysis were used to understand the physical environment and discuss their influence on water quality of the five upland lakes of Serra Sul dos Carajás, southeast Amazonia. The lakes have mid-altitude ranges (elevation), ve
An. Acad. Bras. Ciênc.. Publicado em: 17/05/2018
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6. New azhdarchoid pterosaur (Pterosauria, Pterodactyloidea) with an unusual lower jaw from the Portezuelo Formation (Upper Cretaceous), Neuquén Group, Patagonia, Argentina
ABSTRACT A new azhdarchoid pterosaur from the Upper Cretaceous of Patagonia is described. The material consists of an incomplete edentulous lower jaw that was collected from the upper portion of the Portezuelo Formation (Turonian-Early Coniacian) at the Futalognko site, northwest of Neuquén city, Argentina. The overall morphology of Argentinadraco barrealen
An. Acad. Bras. Ciênc.. Publicado em: 25/09/2017
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7. Hunting tactics of the lemon shark, Negaprion brevirostris, in shallow waters of an oceanic insular area in the western equatorial Atlantic
RESUMO As táticas de caça do tubarão-limão, Negaprion brevirostris, são descritas a partir de observações subaquáticas e de mirantes no Arquipélago de Fernando de Noronha, no Atlântico ocidental equatorial, Brasil. Duas táticas principais foram observadas em águas rasas de praias arenosas e ambientes recifais: (i) “inspeção do substrato” de
Neotrop. ichthyol.. Publicado em: 23/03/2017
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8. Diel Variations and Ecological Aspects in Fish Assemblages of a Sandy Beach in the Semi-Arid Region of Northeast Brazil.
ABSTRACT For the demersal fish that inhabit sandy beaches, the variation between day and night periods represents a determinant factor in their behavior, especially for species that live in shallow waters. This research aims at determining whether there are differences in the fish assemblage structure of the sandy beach of São Cristóvão, RN, Brazil, betwe
Braz. arch. biol. technol.. Publicado em: 31/10/2016
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9. A review of the Leptostraca of the British Isles with discussion of the genus Sarsinebalia Dahl
Abstract A survey of the Leptostracan fauna of the British Isles collected from routine environmental monitoring samples revealed six species of Nebaliidae to be present in shallow waters. These species were identified as Nebalia herbstii Leach, 1814, Nebalia strausi Risso, 1826, Nebalia borealis Dahl, 1985, Nebalia kocatasi Moreira, Koçak and Katagan, 2007
Nauplius. Publicado em: 14/07/2016
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10. A rare sighting of a bottlenose whale (Hyperoodon planifrons, Flower, 1882) in shallow waters off southeastern Brazil
Braz. j. oceanogr.. Publicado em: 2016-03
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11. GENOTOXICITY OF SHALLOW WATERS NEAR THE BRAZILIAN ANTARCTIC STATION "COMANDANTE FERRAZ" (EACF), ADMIRALTY BAY, KING GEORGE ISLAND, ANTARCTICA
Séries de biomonitoramentos foram executadas semanalmente, durante o mês de fevereiro de 2012, para se investigar a genotoxicidade de ambientes costeiros rasos no entorno da Estação Antártica "Comandante Ferraz (EACF). O ensaio cometa foi aplicado para se avaliar os danos ao DNA hemocitário de crustáceos anfípodes Gondogeneia antarctica coletados em
Braz. j. oceanogr.. Publicado em: 2015-03
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12. Larval and adult density of the porcellanid crab Petrolisthes armatus (Anomura: Porcellanidae) in an Amazon estuary, northern Brazil
Petrolisthes armatus (Gibbes, 1850) is a porcellanid crab with a wide geographical distribution. In the present study we analyzed variations in the abundance of P. armatus adults and larvae over an annual cycle in the Marapanim estuary of the Amazon coastal zone, in the northeastern portion of the state of Pará, Brazil. Particularly, we focused on the prese
Zoologia (Curitiba). Publicado em: 06/12/2013