Ocean and Coastal Research最新文献_第4页

Marine Protected Areas Affected by the most extensive Oil Spill on the Southwestern Atlantic coast 受西南大西洋沿岸最广泛的石油泄漏影响的海洋保护区

IF 0.8 4区地球科学

Ocean and Coastal Research Pub Date : 2023-01-01 DOI: 10.1590/2675-2824071.22153bzn

Beatriz Zachello Nunes, M. Soares, Eliete Zanardi-Lamardo, Í. Castro

引用次数: 0

Feeding ecology of Brevoortia aurea larvae (Clupeidae, Alosinae) from Río de la Plata estuary off Uruguay 乌拉圭附近Río de la Plata河口金色短尾蠊幼虫的食性生态

IF 0.8 4区地球科学

Ocean and Coastal Research Pub Date : 2022-12-16 DOI: 10.1590/2675-2824071.22101lrg

L. Rodríguez-Graña, D. Calliari, G. Cervetto

{"title":"Feeding ecology of Brevoortia aurea larvae (Clupeidae, Alosinae) from Río de la Plata estuary off Uruguay","authors":"L. Rodríguez-Graña, D. Calliari, G. Cervetto","doi":"10.1590/2675-2824071.22101lrg","DOIUrl":"https://doi.org/10.1590/2675-2824071.22101lrg","url":null,"abstract":"This study analyses the feeding ecology of Brevortia aurea (Brazilian menhaden) larvae during a reproductive season in the Río de la Plata estuary (RPE), and explores its changes along larval development. Data were obtained from stomach content analyses of 205 individuals collected with a Bongo net during spring 2001. Larvae were discriminated into preflexion (PF), flexion (F) and post-flexion (PsF) stages. Feeding was described using complementary metrics like Feeding incidence (FI), the Relative Importance of different prey types consumed (IRI), the Degree of prey digestion (E) and Diet overlap (D), which were estimated and compared between stages. Also, larval morphometric relationships (body length, BL vs mouth width, MW) and between MW and maximum prey width (Wmax) were established for the range of observed larval sizes. The overall FI was 46.3% and increased with the development stage: 40.4% PF, 63.3% F, 78.6% PsF. Feeding occurred mainly during sunlit hours but no clear daily cycle could be established. Copepods and in particular Acartia tonsa were well represented among ingested preys, followed by invertebrate eggs and nauplii. Prey diversity and overlap between stages tended to decrease as development progressed. B. aurea exhibited isometric growth of MW in relation to BL. Average Wmax was 222.5 µm ± 100.9 SD, and increased non-linearly with both BL and MW. Gape size alone did not seem to be the limiting factor for prey choice (size), and we hypothesize that factors involved in the feeding mechanism other than mouth gape and linked with capture performance substantially influence the feeding ecology of this species in the RPE. Abstract","PeriodicalId":19418,"journal":{"name":"Ocean and Coastal Research","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67144666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Observations of the exchange of ocean waters between the Pacific Ocean and the Gulf of California 太平洋和加利福尼亚湾之间海水交换的观测

IF 0.8 4区地球科学

Ocean and Coastal Research Pub Date : 2022-01-01 DOI: 10.1590/2675-2824070.22036cac

C. Collins, R. Castro

引用次数: 2

The January 15th, 2022 Hunga Tonga-Hunga Ha’apai eruption recorded in Brazil 2022年1月15日在巴西记录的Hunga Tonga-Hunga Ha 'apai火山喷发

IF 0.8 4区地球科学

Ocean and Coastal Research Pub Date : 2022-01-01 DOI: 10.1590/2675-2824070.22050fd

Francisco Dourado, Alessandro Filippo, R. Candella, L. S. D. Souza, Domingos Urbano, H. Evangelista, Pedro J. M. Costa

引用次数: 0

Conversion factor for size structure reconstruction and growth of Lophius gastrophysus Miranda Ribeiro, 1915 catches in the South Atlantic Ocean Miranda Ribeiro, 1915年南大西洋捕获的Lophius gastrophysus的大小、结构重建和生长的转换因子

IF 0.8 4区地球科学

Ocean and Coastal Research Pub Date : 2022-01-01 DOI: 10.1590/2675-2824070.21063atds

Arthur Tavares da Silva, R. Tubino, R. Martins, C. Monteiro-Neto, M. R. Costa

{"title":"Conversion factor for size structure reconstruction and growth of Lophius gastrophysus Miranda Ribeiro, 1915 catches in the South Atlantic Ocean","authors":"Arthur Tavares da Silva, R. Tubino, R. Martins, C. Monteiro-Neto, M. R. Costa","doi":"10.1590/2675-2824070.21063atds","DOIUrl":"https://doi.org/10.1590/2675-2824070.21063atds","url":null,"abstract":"Lophius gastrophysus is an exploited deep-sea demersal fishing resource in the Southeast-South region of Brazil, a capture target for the twin trawl multi-specific bottom trawling fleet. Considered a prized fish, it is commonly processed on board, retaining commercial cuts of the tail called colas . Thus it is diffcult to recognize the original length of the specimens and, consequently, to assess the dynamics of sources and the impacts of catches. Individual length and weight data were used to generate body predictive models correlated to the monkfish cola . The parameters of growth, mortality and exploitation rate were also estimated from the size structure of Lophius gastrophysus captured by the industrial bottom trawling fleet in Southeast Brazil between May 2013 and April 2015, assessing monkfish stock based on indirect estimates of life history information. All predictive models of body size showed coeffcients of determination above 0.9 (P 0.001), indicating good data addustments. The growth parameters were determined by the minimum residual variance methodology, being: L ∞ = 92.4 cm and k = 0.158/year. The size structure tended to increase with depth in the spring. Individuals under the age of sexual maturity contributed significantly to catches. The length of first sexual maturation was estimated at 48.6 cm and the recruitment age was between 6 and 7 years. The coeffcients of total, natural, fishing and exploitation rates were estimated at: Z = 0.676; M = 0.241; F = 0.436 and E = 0.644. The fishing mortality rate was higher than the reference value (E > 0.50) indicating a state of overexploitation of the southeast most part of stock. A review of the current Brazilian legislation established for the species on the southeast coast is recommended. Abstract","PeriodicalId":19418,"journal":{"name":"Ocean and Coastal Research","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67342537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Temporally Varying Mesoscale Eddy Characteristics in the California Current System Identified from RAFOS Floats 由RAFOS浮标识别的加利福尼亚洋流系统中尺度涡的时间变化特征

IF 0.8 4区地球科学

Ocean and Coastal Research Pub Date : 2022-01-01 DOI: 10.1590/2675-2824070.21064pcc

P. Chu, C. Fan

引用次数: 1

Spreading and accumulation of river-borne sediments in the coastal ocean after the environmental disaster at the Doce River in Brazil 巴西多塞河环境灾难后沿海海洋中河流沉积物的扩散和积累

IF 0.8 4区地球科学

Ocean and Coastal Research Pub Date : 2022-01-01 DOI: 10.1590/2675-2824070.21097atl

A. T. Lemos, A. Osadchiev, P. L. Mazzini, Guilherme N. Mill, Sabrina A. R. Fonseca, R. Ghisolfi

引用次数: 4

Seasonal factors affecting sea turtle nesting in the Southeastern Caribbean Sea (Gulf of Paria, Venezuela) 影响加勒比海东南部海龟筑巢的季节性因素(委内瑞拉帕里亚湾)

IF 0.8 4区地球科学

Ocean and Coastal Research Pub Date : 2022-01-01 DOI: 10.1590/2675-2824070.22049cb

Clemente Balladares, Digna Rueda-Roa, D. Rodríguez, F. Muller‐Karger, H. Barrios-Garrido

{"title":"Seasonal factors affecting sea turtle nesting in the Southeastern Caribbean Sea (Gulf of Paria, Venezuela)","authors":"Clemente Balladares, Digna Rueda-Roa, D. Rodríguez, F. Muller‐Karger, H. Barrios-Garrido","doi":"10.1590/2675-2824070.22049cb","DOIUrl":"https://doi.org/10.1590/2675-2824070.22049cb","url":null,"abstract":"The nesting characteristics (number of nests and eggs, time of year, nesting initiation, and nesting length) of leatherback ( Dermochelys coriacea ) and hawksbill ( Eretmochelys imbricata ) sea turtles of the southern Caribbean Sea (specifically in the Gulf of Paria in Venezuela), were examined in association with weekly precipitation averages and number of rainy days per week during the period between 2009 and 2018. We hypothesized about the influence of rainfall intensity and patterns as the main abiotic factor for sea turtle nesting. On average, leatherbacks preferred nesting during the drier season of each year (March, April, and May), while hawksbills nested during the rainy season (June to September). For both species, we found few significant correlations between the number of nests or clutch size (number of eggs per nest) and weekly averages of seasonal precipitation rates in the region. Average hawksbill clutch sizes were not correlated with average precipitation rates but were positively correlated with the number of rainy days per week (r=0.66, P≤0.05). Average hawksbill clutch sizes decreased each year on average (-3.3 eggs/year, r=-0.88, P≤0.001), which coincided with a negative long-term trend in the number of rainy days (-0.11 rainy days/week, r=-0.69, P≤0.05). During the study period, nesting activities for both leatherback and hawksbills started progressively later (0.9 and 0.6 weeks/year, respectively p≤0.05) and were shorter (-0.9 and -0.8 weeks /year, P≤0.1 and P≤0.05, respectively). Abstract","PeriodicalId":19418,"journal":{"name":"Ocean and Coastal Research","volume":"39 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67144059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A vertical-mode extrapolation scheme applied to the Brazil Current domain: quasi-synoptic scenarios 应用于巴西海流域的垂直模式外推方案:准天气情景

IF 0.8 4区地球科学

Ocean and Coastal Research Pub Date : 2022-01-01 DOI: 10.1590/2675-2824070.22141jpma

João P. M. Amorim, Ilson C. A. da Silveira, Milton Borges-Silva, Pedro W. M. Souza‐Neto, Wellington C. Belo, C. Z. Lazaneo, P. S. Bernardo, M. Dottori, R. Martins, Daniel L. Moreira

引用次数: 2

Potential control of invasive species of orange cup coral Tubastrea coccinea Lesson, 1829 using a synthetic natural compound 橘杯珊瑚(Tubastrea coccinea Lesson, 1829)入侵物种的潜在控制

IF 0.8 4区地球科学

Ocean and Coastal Research Pub Date : 2022-01-01 DOI: 10.1590/2675-2824070.21069rdsc

R. S. Costa, D. Batista, W. Batista, M. H. Neves, C. Lopes, Rosangela Sabattini Capella Lopes, E. Braga, T. S. Nascimento, S. Dobretsov, R. Coutinho

引用次数: 0