Brazilian Journal of Aquatic Science and Technology最新文献_第10页

Melia azedarach L. Fruit Extract as a potencial candidate in controlling the Neuraeschna Hagen, 1867 (Odonata: Aeshnidae), predominant predators for fish fingerlings

Brazilian Journal of Aquatic Science and Technology Pub Date : 2016-09-14 DOI: 10.14210/BJAST.V20N1.4465

Osmar Tomazelli, G. M. Souza-Franco, Antonio Carlos Munarini, R. Niero, F. Monache, J. D. Magro

引用次数: 1

Caracterização sedimentológica de dez planícies intermareais localizadas nas baías norte e sul da Grande Florianópolis – SC, Brasil 巴西大florianopolis - SC海湾北部和南部10个潮间带平原的沉积学特征

Brazilian Journal of Aquatic Science and Technology Pub Date : 2016-09-14 DOI: 10.14210/BJAST.V18N2.5904

Ana Paula Rosso, P. R. Pezzuto, João Thadeu de Menezes

{"title":"Caracterização sedimentológica de dez planícies intermareais localizadas nas baías norte e sul da Grande Florianópolis – SC, Brasil","authors":"Ana Paula Rosso, P. R. Pezzuto, João Thadeu de Menezes","doi":"10.14210/BJAST.V18N2.5904","DOIUrl":"https://doi.org/10.14210/BJAST.V18N2.5904","url":null,"abstract":"The particle size of clastic sediments can provide important information about mechanisms of transport, selection and deposition which are related to the dominant hydrodynamic processes. This study describes the superficial sediments of ten intertidal plains located along the North (one site) and South (nine sites) Bays in Florianópolis, SC, where the clam Anomalocardia brasiliana is artisanally exploited. Systematic sedimentological sampling was carried out in all areas during the fall of 2008, summing up 464 samples. In the laboratory, samples were subjected to particle size analysis techniques. Sand was the predominant constituent in all banks analyzed, ranging from 70.59% in Maruim to 97.56% in Maciambú. Mean particle diameter varied from 1φ to 3φ in the study area, corresponding to medium to fine sands. Clay and silt attained higher percentages in Praia da Daniela bank, in North Bay, specially as compared to the banks located in the eastern and southern sectors of the South Bay. Such sediment distribution seems to be related to the more energetic characteristic of the South Bay as compared to the North Bay, where tidal and wind-induced currents are more gentle favouring the deposition of finer sediments.","PeriodicalId":410031,"journal":{"name":"Brazilian Journal of Aquatic Science and Technology","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128918472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A ictiofauna da bacia do rio Sarapuí, SP, Brasil: estrutura das assembleias e a influência da sazonalidade 巴西sarapui河流域鱼类区系:群落结构和季节性的影响

Brazilian Journal of Aquatic Science and Technology Pub Date : 2016-09-12 DOI: 10.14210/bjast.v20n1.5984

W. S. Smith, M. B. Nascimento

{"title":"A ictiofauna da bacia do rio Sarapuí, SP, Brasil: estrutura das assembleias e a influência da sazonalidade","authors":"W. S. Smith, M. B. Nascimento","doi":"10.14210/bjast.v20n1.5984","DOIUrl":"https://doi.org/10.14210/bjast.v20n1.5984","url":null,"abstract":"Esse trabalho teve como objetivo determinar a composicao da ictiofauna da bacia do rio Sarapui e caracterizar a sua comunidade, utilizando para isso coletas em 4 pontos no rio principal, 2 no ribeirao do Camapua e 2 no ribeirao dos Macacos alem de trabalhos realizados anteriormente em outros pontos da bacia. As coletas foram realizadas no periodo chuvoso e seco durante o ano de 2010. Tambem foi realizada uma caracterizacao ambiental a fim de verificar possiveis atividades antropicas, tais como desmatamento, agricultura, pecuaria e vestigios de antigas extracoes de areia, alem de analise de pH e temperatura. Os peixes foram coletados com 2 baterias de redes de espera e peneira. Foram identificadas 27 especies, distribuidas em 13 familias e 04 ordens. A ordem mais representativa foi Characiformes, destacando a familia Characidae e a especie Astyanax altiparanae . Os pontos Sa01 e Sa03 foram os mais representativos em numero de especies, o ponto Sa04 em abundância, enquanto que a diversidade foi maior no ponto Sa03. Considerando todos os trabalhos realizados ate o momento foi constatada a ocorrencia de 61 especies distribuidas em 6 ordens e 19 familias, sendo as ordens Characiformes e Siluriformes as mais representativas. O presente estudo contribui para o levantamento de informacoes acerca das assembleias de peixes da Bacia do rio Sarapui e permite concluir que a apesar da bacia sofre inumeras perturbacoes que colocam em risco a sua ictiofauna, o fator mais influente sobre os atributos das comunidades avaliadas no rio Sarapui e a sazonalidade enquanto que esse fator nao e relevante para os rios de menor ordem.","PeriodicalId":410031,"journal":{"name":"Brazilian Journal of Aquatic Science and Technology","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115377241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A survey of the eutrophication state of an urbanized tropical estuary, the case of the Great Vitória Estuarine System, Brazil. 城市化热带河口富营养化状况的调查，以巴西Vitória河口系统为例。

Brazilian Journal of Aquatic Science and Technology Pub Date : 2016-09-06 DOI: 10.14210/BJAST.V20N1.5230

C. Grilo, C. C. Santos, C. D. Boina, T. K. Pinto, G. Barroso, R. R. Neto, E.V.R. de Castro, M. A. Vicente

{"title":"A survey of the eutrophication state of an urbanized tropical estuary, the case of the Great Vitória Estuarine System, Brazil.","authors":"C. Grilo, C. C. Santos, C. D. Boina, T. K. Pinto, G. Barroso, R. R. Neto, E.V.R. de Castro, M. A. Vicente","doi":"10.14210/BJAST.V20N1.5230","DOIUrl":"https://doi.org/10.14210/BJAST.V20N1.5230","url":null,"abstract":"Although, estuarine ecosystems have an ecological and economical importance as they have a high biological productivity and occur within a unique and dynamic environment, they have been subjected to anthropogenic alterations. The Great Vitoria Estuarine System (GVES), Espirito Santo State, Brazil, is not an exception, as urbanization is growing around it with a high quantity of sewage been added to the system. In order to evaluate the eutrophication state as well as the meiofauna response to it, several parameters in both sediments and in the water column were assessed. Orthophosphate, nitrite, nitrate, ammonia, chla and Fecal Coliform counts (FC) ranged from 0.2 to 3.2 μM, 0.25 to 1.14 μM, 1.83 to 0.19μM, 4.19 to 49.23 μM, 0.61 to 6.72 μg/L and 14 to 5.0x104 MPN/100 mL of water, respectively. These results showed that the GVES is under an eutrophication process and that the Passagem Channel experienced the largest impacts. Sewage plays an important role in this eutrophication process as indicated by PCA and correlations tests. The density of meiofauna showed similar values to those found in environments with similar levels of anthropogenic stress. This multi-approach evaluation revealed several aspects of the impacted estuary and could be used as an important tool to manage better the estuary.","PeriodicalId":410031,"journal":{"name":"Brazilian Journal of Aquatic Science and Technology","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132421115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Dieta da Gurijuba - Sciades parkeri - Desembarcada pelas pescarias artesanais de larga escala da costa norte do Brasil

Brazilian Journal of Aquatic Science and Technology Pub Date : 2016-09-02 DOI: 10.14210/BJAST.V20N1.7354

Jeanne Duarte Paula, Luciane de Carvalho Nogueira, Zélia Maria Nunes Pimentel, Bianca Bentes

{"title":"Dieta da Gurijuba - Sciades parkeri - Desembarcada pelas pescarias artesanais de larga escala da costa norte do Brasil","authors":"Jeanne Duarte Paula, Luciane de Carvalho Nogueira, Zélia Maria Nunes Pimentel, Bianca Bentes","doi":"10.14210/BJAST.V20N1.7354","DOIUrl":"https://doi.org/10.14210/BJAST.V20N1.7354","url":null,"abstract":"Sciades parkeri e um peixe marinho/estuarino conhecido popularmente como gurijuba. Para o estudo da dieta foram coletadas amostras bimestrais, na costa do Amapa, entre setembro de 2011 e dezembro de 2012. Em laboratorio, os estomagos foram removidos, pesados e seus conteudos gastricos foram analisados com auxilio de estereomicroscopio. A dieta foi avaliada a partir de metodos de frequencia de ocorrencia, indice de analise volumetrica e indice de importância alimentar. Foram analisados 189 estomagos; destes, 139 continham alimentos, 25 continham sedimento, 25 estavam vazios. Os itens alimentares principais foram fragmentos de crustaceos (n=60) peixes (n=33), Cycloplax pinnotheroides (Brachyura) (n=22), Os itens que apresentara as maiores frequencias de ocorrencia e indice de importância alimentar tanto no periodo chuvoso quanto no seco foram fragmentos de crustaceos (chuvoso F i =38,64% e AI i = 65,35% e seco Fi = 48,15% e AI i = 67,76%) e fragmentos de peixes (chuvoso F i =20,45% e AI i = 19,89% e seco Fi = 27,78% e AI i = 23,45%). As analises indicaram que a S. parkeri e uma especie essencialmente carnivora.","PeriodicalId":410031,"journal":{"name":"Brazilian Journal of Aquatic Science and Technology","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123990113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

APLICAÇÃO DE UM PROTOCOLO DE AVALIAÇÃO AMBIENTAL RÁPIDA EM DOIS RESERVATÓRIOS DO SEMIÁRIDO BRASILEIRO 在巴西半干旱地区的两个水库实施快速环境评估方案

Brazilian Journal of Aquatic Science and Technology Pub Date : 2016-09-02 DOI: 10.14210/BJAST.V20N1.6992

Maiara Brito, Silvano Lima do Nascimento Filho, G. Viana, Mauro de Melo Júnior

引用次数: 4

Influência de vórtices na concentração de clorofila da confluência Brasil-Malvinas: Mecanismos inferidos por sensoriamento remoto 涡旋对巴西-福克兰汇合处叶绿素浓度的影响:遥感推断机制

Brazilian Journal of Aquatic Science and Technology Pub Date : 2016-09-02 DOI: 10.14210/BJAST.V20N1.4782

Ingrid M. Angel-Benavides, Gabriela S. Pilo, Fabio Boeira Dias, C. A. Garcia

{"title":"Influência de vórtices na concentração de clorofila da confluência Brasil-Malvinas: Mecanismos inferidos por sensoriamento remoto","authors":"Ingrid M. Angel-Benavides, Gabriela S. Pilo, Fabio Boeira Dias, C. A. Garcia","doi":"10.14210/BJAST.V20N1.4782","DOIUrl":"https://doi.org/10.14210/BJAST.V20N1.4782","url":null,"abstract":"This study aims to (a) identify the spatial patterns in the surface phytoplankton abundance, here indexed as satellite chlorophyll-a concentration ([chla]), associated with mesoscale eddies of the Brazil-Malvinas Confluence (BMC) and (b) infer which are the physical mechanisms responsible for such patterns. In this work, the 57 largest eddies in the broad BMC region were selected from a global eddy dataset based on merged satellite altimetry data. Using those eddies, the main mechanisms which may eddies affect the [chla] were tested: (a) the eddy-pumping, (b) the eddy Ekman pumping and (c) the eddy advection of meridional [chla] gradients. Mean spatial chlorophyll and chlorophyll patterns associated with the selected eddies, as well as correlations between variables that describe the [chla], and its spatial anomalies (Δ[chla]), distribution and the eddies’ physical characteristics, were calculated. Positive and negative anomalies associated with cyclonic and anticyclonic eddies’ interiors, respectively, and significant inverse correlations between eddies’ amplitudes and the difference between Δ[chla] inside and outside the eddies, were found as evidence of eddy-pumping mechanism. The [chla] spatial pattern associated to the eddy advection of meridional gradients was evident in the eastern side of the features, as low (high) [chla] being advected from south (north) in anticyclonic (cyclonic) eddies. The magnitude of the difference between Δ[chla] in the east and west eddies’ hemispheres presented itself more dependent on the [chla] meridional gradient intensity than on the eddy rotational velocity. Furthermore, the non-linear parameter of the studied eddies suggest that BCM eddies are capable to transport the water parcels trapped inside them, helping in the propagation of the eddy-pumping signature.","PeriodicalId":410031,"journal":{"name":"Brazilian Journal of Aquatic Science and Technology","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121431929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Nutrients and chlorophyll-a distribution over the continental margin between Cabo Frio (RJ) and Ubatuba (SP): winter of 2010 卡波弗里奥(RJ)和乌巴图巴(SP)之间大陆边缘的养分和叶绿素-a分布:2010年冬季

Brazilian Journal of Aquatic Science and Technology Pub Date : 2016-08-25 DOI: 10.14210/BJAST.V19N3.4791

R. A. Takanohashi, G. Moser, A. Fernandes, A. Enrich-Prast, R. Pollery

引用次数: 2

Variabilidade do sistema corrente do Brasil associada aos cenários de mudanças climáticas A1F1 e B1 与A1F1和B1气候变化情景相关的巴西当前系统的变异性

Brazilian Journal of Aquatic Science and Technology Pub Date : 2016-08-23 DOI: 10.14210/BJAST.V19N3.4703

Carina Stefoni Böck, L. Assad, L. Landau

{"title":"Variabilidade do sistema corrente do Brasil associada aos cenários de mudanças climáticas A1F1 e B1","authors":"Carina Stefoni Böck, L. Assad, L. Landau","doi":"10.14210/BJAST.V19N3.4703","DOIUrl":"https://doi.org/10.14210/BJAST.V19N3.4703","url":null,"abstract":"The aim of this work is to investigate the behavior of volume transport and advective heat flux patterns which are related to the Brazil Current System (BCS) according to the climate change scenarios suggested by the Intergovernmental Panel on Climate Changes. The results deriving from the global model Climate Model version 2.1 (GFDL-CM2.1) for future scenarios of climate change A1FI and B1 and for the scenario that represents the climate in the Twentieth Century (20C3M) have been used in this work. Volume transport and advective heat flux integrated for the whole BCS as well as for each water mass which constitutes the system have been calculated applying these data. Estimates were made for three zonal sections (23oS, 25oS and 30oS) and then were used in the Wavelet Analysis. The performed analysis showed the occurrence of interannual variability for the estimated properties in the region. It also showed that the BCS shows changes in both intensity and variability of these parameters when comparing A1FI and B1 to 20C3M. Results from Wavelet Analysis for the total volume transport and advective heat flux integrated per section show that the period between three and six years prevails in sections 23oS and 25oS. The variability in 30oS however, is significantly higher than eight years. It could also be observed the change of the variability of the total volume transport and heat flux temporal series towards higher frequencies when they are submitted to A1FI and B1 climate changes scenarios.","PeriodicalId":410031,"journal":{"name":"Brazilian Journal of Aquatic Science and Technology","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132730192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spatial distribution of eggs and larvae of Engraulis anchoita (Hubbs & Marini, 1935) in the southern brazilian shelf 巴西南部陆架凤尾鱼卵和幼虫的空间分布(Hubbs & Marini, 1935)

Brazilian Journal of Aquatic Science and Technology Pub Date : 2016-08-18 DOI: 10.14210/BJAST.V19N3.4653

Felipe Torquato, J. Muelbert

{"title":"Spatial distribution of eggs and larvae of Engraulis anchoita (Hubbs & Marini, 1935) in the southern brazilian shelf","authors":"Felipe Torquato, J. Muelbert","doi":"10.14210/BJAST.V19N3.4653","DOIUrl":"https://doi.org/10.14210/BJAST.V19N3.4653","url":null,"abstract":"This paper describes the horizontal distribution patterns of eggs and larvae of the anchovy, Engraulis anchoita, at two distinct oceanographic regions in the Southern Brazilian Shelf (SBS). Santa Marta Cape (SMC; 28°30’) is characterized by upwelling, while Albardao (33o) is influenced by Plata Plume Waters (PPW) and the Subtropical Shelf Front (SSF). Ichthyoplankton was sampled during winter 2005 and summer 2007 in SMC and Albardao during darkness and daytime with a Multinet. Three 330μm mesh-nets results were combined to express the horizontal distribution of anchovy early stages. Maps of salinity, temperature, fish eggs and larvae were made to evaluate spatial distributional patterns. Temperature-Salinity-Icthyoplankton (TSI) diagrams were used to infer fish larvae distribution with respect to water mass composition. Mean larvae and eggs abundance during winter was greater than summer, and SMC had higher ichthyoplankton abundance than Albardao. In both seasons the largest concentration of anchovy eggs and larvae were found in coastal areas with low salinity. Eggs and larvae were usually present in cold waters during winter and summer. According TSI diagrams, PPW was found in both regions and was positively associated with ichthyoplankton abundance.","PeriodicalId":410031,"journal":{"name":"Brazilian Journal of Aquatic Science and Technology","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116547791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1