Ocean and Coastal Research最新文献_第7页

Farming Pacific oysters using the spat-on-shell system in a shallow area in the subtropical coast of Brazil 在巴西亚热带海岸的浅水区，使用拍打壳系统养殖太平洋牡蛎

IF 0.8 4区地球科学

Ocean and Coastal Research Pub Date : 2022-01-01 DOI: 10.1590/2675-2824070.21100fs

F. Suplicy, R. V. Souza

{"title":"Farming Pacific oysters using the spat-on-shell system in a shallow area in the subtropical coast of Brazil","authors":"F. Suplicy, R. V. Souza","doi":"10.1590/2675-2824070.21100fs","DOIUrl":"https://doi.org/10.1590/2675-2824070.21100fs","url":null,"abstract":"of structures are used in the initial/nursery phase) to commercial size and sell them mostly raw for the The Santa Catarina Island Bay (SCIB) contributes with the largest production of cultivated oysters in Brazil, which is almost entirely based on hatchery produced cultchless oyster spat, whose metamorphosis is induced by an epinephrine solution. A production scale experiment was carried out to analyze the technical feasibility of the spat-on-shell system in SCIB. The experiment was carried out for 47 weeks, involving an internal phase, the larval settlement, and an external phase, encompassing nursery and growth. Nursery periods varied according to the experimental treatments: T3W - 3 weeks; T5W - 5 weeks; and T12W - 12 weeks. T3W and T5W showed lower survival during the two-week period shortly after transfer of the cultch from the nursery to the grow-out phase, likely linked to premature exposure of the spat in the cultch strings to predators such as fish. The 12-week nursery period showed the best results with clusters with a median of 6 animals and 11.4 g of meat per oyster at the end of the experimental period. Future studies could verify whether longer nursery periods or alternative methods to avoid exposure to predators can outperform these results. 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":"67143507","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

Impacts of the Red Sea and Persian Gulf on the Northern Indian Ocean in Numerical Simulations 数值模拟中红海和波斯湾对北印度洋的影响

IF 0.8 4区地球科学

Ocean and Coastal Research Pub Date : 2022-01-01 DOI: 10.1590/2675-2824070.22019ejdc

E. Campos, A. Gordon, Geórgenes H. Cavalcante, B. Kjerfve, M. Abouleish

引用次数: 0

First description of archaeal communities in carbonate-rich seafloor and subseafloor sediments from the Southwestern Atlantic slope 首次描述西南大西洋斜坡富含碳酸盐的海底和海底沉积物中的古细菌群落

IF 0.8 4区地球科学

Ocean and Coastal Research Pub Date : 2022-01-01 DOI: 10.1590/2675-2824070.22134agb

A. Bendia, F. Nakamura, A. Butarelli, M. Kmit, R. B. Ramos, C. N. Signori, R. A. Lourenço, M. Mahiques, P. Sumida, V. Pellizari

引用次数: 2

A multidisciplinary approach for studying deep-sea habitats in Santos Basin 桑托斯盆地深海栖息地的多学科研究方法

IF 0.8 4区地球科学

Ocean and Coastal Research Pub Date : 2022-01-01 DOI: 10.1590/2675-2824070.22161agb

A. Bendia, Orlemir Carrerette

引用次数: 1

Environmental factors associated with southern brown shrimp (Penaeus subtilis) yield at Brazilian Amazon coast 影响巴西亚马逊河沿岸南部枯草对虾产量的环境因素

IF 0.8 4区地球科学

Ocean and Coastal Research Pub Date : 2022-01-01 DOI: 10.1590/2675-2824070.21102jana

José Augusto Negreiros Aragão, I. Cintra, K. Silva, D. Martins, M. Petrere Júnior

引用次数: 0

Sedimentation in the adjacencies of a southwestern Atlantic giant carbonate ridge 西南大西洋巨型碳酸盐岩脊附近的沉积

IF 0.8 4区地球科学

Ocean and Coastal Research Pub Date : 2022-01-01 DOI: 10.1590/2675-2824070.21109rfds

Rosangela Felicio dos Santos, B. Kim, T. Trevizani, Rodrigo Udenal de Oliveira, Mascimiliano Maly, R. B. Ramos, R. Figueira, M. Mahiques

{"title":"Sedimentation in the adjacencies of a southwestern Atlantic giant carbonate ridge","authors":"Rosangela Felicio dos Santos, B. Kim, T. Trevizani, Rodrigo Udenal de Oliveira, Mascimiliano Maly, R. B. Ramos, R. Figueira, M. Mahiques","doi":"10.1590/2675-2824070.21109rfds","DOIUrl":"https://doi.org/10.1590/2675-2824070.21109rfds","url":null,"abstract":"Although carbonate mounds have been investigated for 100 years, few studies focus on the giant variety. The Alpha Crucis Carbonate Ridge (ACCR), a ~17 x 12-km ring-shaped ridge formed by hundreds of mounded structures, located between the 300 and 800-m isobaths and reaching a maximum height of 340 meters above the adjacent seafloor, is the first giant carbonate mounded feature described for the SW Atlantic margin. This study provides the first multiproxy approach to investigate sediments covering the ACCR and its adjacencies. Most of the area is located under the Intermediate Western Boundary Current (IWBC) flow, which carries the nutrient-rich Antarctic Intermediate Water (AAIW). Radiocarbon aging shows pronounced differences for the shallow layers (MIS3 for the top of the mounds and late Holocene for the adjacencies). Grain size data indicate the prevalence of sandy fractions on top of the mounds and muddy sediments in the adjacent areas. Fe/Ca and Ti/Ca proxies allowed for identifying mainly biogenic sedimentation in the area. However, the input of allochthonous terrigenous sediment is necessary for mound buildup, and values of Fe and Ti collected on the top of the mounds are significant. End-Members distributions and metal concentrations also allowed for recognition of distinct sources of sediment. εNd and Ln(Fe/K) indicated two primary terrigenous sources, the Precambrian rocks of the Brazilian shield (Cabo Frio end-member) and the multiple lithologies drained by the Rio de la Plata basin. Redox condition proxies indicated that the area is submitted to oxic conditions, probably reflecting the action of the IWBC. This work provides the first insight into an integrated grain-size and geochemical characterization of the Alpha Crucis Carbonate Ridge (southwestern Atlantic margin).","PeriodicalId":19418,"journal":{"name":"Ocean and Coastal Research","volume":"27 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67143649","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: 3

Characterization of the organic matter in pockmark areas of the Southwestern Atlantic upper slope 西南大西洋上斜坡麻坑区有机质特征

IF 0.8 4区地球科学

Ocean and Coastal Research Pub Date : 2022-01-01 DOI: 10.1590/2675-2824070.22022ral

R. A. Lourenço, N. Kunrath, Doris Nagaoka, C. A. Magalhães, Antonio Derley S. Pereira, Basílio Magno Tavares Sotão Neto, C. T. Timoszczuk, F. R. Santos, Guilherme A. Pedrão, L. Araujo, Lorena Sampaio Nascimento, Nayara Ferreira Carvalho, J. Silva, S. Taniguchi, M. Mahiques, M. Bícego, P. Sumida

引用次数: 2

Scanning electron microscope analysis of Emiliania huxleyi samples revealed the presence of a single morphotype in the Dardanelles Strait, Turkey 扫描电子显微镜分析赫胥黎标本显示，在土耳其达达尼尔海峡存在一种单一形态

IF 0.8 4区地球科学

Ocean and Coastal Research Pub Date : 2022-01-01 DOI: 10.1590/2675-2824070.22038ek

E. Kocum

引用次数: 0

Trophic analysis of female mangrove crabs at two sites from Southeastern Brazil (Rio de Janeiro) 巴西东南部(里约热内卢de Janeiro)两个地点红树林雌蟹营养分析

IF 0.8 4区地球科学

Ocean and Coastal Research Pub Date : 2022-01-01 DOI: 10.1590/2675-2824070.21032evda

E. V. Almeida, V. T. Kütter, E. Silva-Filho

{"title":"Trophic analysis of female mangrove crabs at two sites from Southeastern Brazil (Rio de Janeiro)","authors":"E. V. Almeida, V. T. Kütter, E. Silva-Filho","doi":"10.1590/2675-2824070.21032evda","DOIUrl":"https://doi.org/10.1590/2675-2824070.21032evda","url":null,"abstract":"The mangrove crab Ucides cordatus (Linnaeus, 1763) is a burrowing crab with an important role in mangrove nutrient cycling. The species holds major socioeconomic importance, generating yield for traditional and low-income populations. Despite its ecological and economic importance, there are few experiments in Brazil applying stable isotope tools to trophic crab classification, and even fewer considering females in the reproductive period. Females have different energy demands than males; studies examining C and N can reveal details regarding the differences. Hence, the present study is the first analysis of the δ 13 C, δ 15 N, and the C/N ratio in ovigerous females of two populations from Southeastern Brazil (Caceribu River - Guanabara Bay and Gargaú mangrove - Paraiba do Sul River secondary estuary). The Caceribu mangrove is larger and is located in one of the most impacted bays in the world. In the Paraiba do Sul River region, the mangrove swamp is about ten times smaller, has a substantially lower population in the surrounding area, and is more influenced by agricultural activities. The δ 13 C analysis confirmed mangrove leaves as their main food source. The significant δ 13 C variation between the Guanabara and Paraiba do Sul estuary populations can be related to differences in food availability and nutritional value. However, the δ 15 N values can be related to the ingestion of other food items during the breeding season as well as the influence of anthropogenic mangrove degradation. At both study sites, the δ15N values were higher than those observed in other mangrove crab populations and other herbivorous species. Significant ( p < 0.05) isotopic differences were found among populations, suggesting variations in biogeochemical cycles that may be related to different environmental conditions between the sites. 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":"67342299","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

Seasonal variation of estuarine birds from Trapandé Bay, Cananéia, Brazil 巴西，加拿大，特拉潘达湾河口鸟类的季节变化

IF 0.8 4区地球科学

Ocean and Coastal Research Pub Date : 2022-01-01 DOI: 10.1590/2675-2824070.21067lyr

L. Roselli, Edison Barbieri

{"title":"Seasonal variation of estuarine birds from Trapandé Bay, Cananéia, Brazil","authors":"L. Roselli, Edison Barbieri","doi":"10.1590/2675-2824070.21067lyr","DOIUrl":"https://doi.org/10.1590/2675-2824070.21067lyr","url":null,"abstract":"Estuaries are important environments for birds as resting and foraging sites. Therefore, information about the abundance, distribution, and biology of bird populations are necessary for preservation of such ecosystems. In this work, we studied the dynamic population of birds at Baixio do Arrozal, Trapandé Bay, Cananéia Estuary on the southern coast of São Paulo state, Brazil. As an original hypothesis, we expected that the species abundances would display differences across months and seasons. Using the point count method, bird data were collected monthly between April and December 2013. For comparing the assemblages, a bar chart of the total abundance as a function of the monthly frequency was used along with boxplot graph of this index as a function of the seasons. We also investigated variations in the abundance of some specific bird populations. The results obtained for the total abundance indicated a seasonal pattern, peaking during the warmer months. The population analyses showed a greater abundance occurring in spring/summer, and a decrease of resident species populations in the winter. Migratory birds were recorded in the autumn and spring, following the migratory movements. This demonstrated that bird assemblages varied according to seasons due to the life cycle and the population sizes. Therefore, Baixio do Arrozal is an important environment for avifauna, which use the area throughout the year and need to be preserved.","PeriodicalId":19418,"journal":{"name":"Ocean and Coastal Research","volume":"9 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67342608","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