Pub Date : 2021-05-07DOI: 10.19080/OFOAJ.2021.13.555866
Nuno Miguel Araújo Gomes
Nuno Miguel Araújo Gomes1,2*, Dimítri De Araújo Costa1,2, Harold Casalís Cantallo1, Tiago José Andrade Ribeiro1 and Carlos Antunes1,2 1Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Portugal 2Aquamuseu do Rio Minho, Parque do Castelinho, Portugal Submission: March 30, 2021; Published: May 07, 2021 Corresponding author: Nuno Miguel Araújo Gomes, Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, s/n, 4450-208 Matosinhos, Portugal. Email: Nuno@ciimar.up.pt
Nuno Miguel Araújo gomes1,2 *， Dimítri De Araújo costa1,2, Harold Casalís Cantallo1, Tiago joss Andrade Ribeiro1 and Carlos antunes 1,2 1 1葡萄牙波尔图大学海洋与环境研究跨学科中心2 aquamuseu do里约热内卢Minho, Parque do Castelinho，葡萄牙提交日期:2021年3月30日;通讯作者:Nuno Miguel Araújo Gomes，波尔图大学海洋与环境研究跨学科中心(CIIMAR)， Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, s/n, 4450-208 Matosinhos，葡萄牙。电子邮件:Nuno@ciimar.up.pt
{"title":"Isopods (Crustacea, Malacostraca) from International Minho River, Iberian Peninsula","authors":"Nuno Miguel Araújo Gomes","doi":"10.19080/OFOAJ.2021.13.555866","DOIUrl":"https://doi.org/10.19080/OFOAJ.2021.13.555866","url":null,"abstract":"Nuno Miguel Araújo Gomes1,2*, Dimítri De Araújo Costa1,2, Harold Casalís Cantallo1, Tiago José Andrade Ribeiro1 and Carlos Antunes1,2 1Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Portugal 2Aquamuseu do Rio Minho, Parque do Castelinho, Portugal Submission: March 30, 2021; Published: May 07, 2021 Corresponding author: Nuno Miguel Araújo Gomes, Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, s/n, 4450-208 Matosinhos, Portugal. Email: Nuno@ciimar.up.pt","PeriodicalId":308766,"journal":{"name":"Oceanography & Fisheries Open access Journal","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134315598","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}
Pub Date : 2021-04-21DOI: 10.19080/OFOAJ.2021.13.555865
Carlos Zamora‐Tovar
Ecological restoration activities with the participation of the fisherman community in a natural protected area, and the government and ac ademic support have established the possibility to provide an ecosystem functional that benefit to the population and also allow the sustainable decision-making to management natural resources at the present and immediate future. In addition, and another sense, is promote the productivity of its artisanal fisheries, in this case is evident that the volumes of shrimp and crab catch from different years were correlated with the dates scheduled for reforestation activities, showing that productivity increases were better over time.
{"title":"The Fishing Communities Involved in Mangrove Restoration Promote the Productivity of its Artisanal Fisheries","authors":"Carlos Zamora‐Tovar","doi":"10.19080/OFOAJ.2021.13.555865","DOIUrl":"https://doi.org/10.19080/OFOAJ.2021.13.555865","url":null,"abstract":"Ecological restoration activities with the participation of the fisherman community in a natural protected area, and the government and ac ademic support have established the possibility to provide an ecosystem functional that benefit to the population and also allow the sustainable decision-making to management natural resources at the present and immediate future. In addition, and another sense, is promote the productivity of its artisanal fisheries, in this case is evident that the volumes of shrimp and crab catch from different years were correlated with the dates scheduled for reforestation activities, showing that productivity increases were better over time.","PeriodicalId":308766,"journal":{"name":"Oceanography & Fisheries Open access Journal","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115876314","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}
Pub Date : 2021-04-01DOI: 10.19080/OFOAJ.2021.13.555863
L. M. Pérez
Leonardo Martín Pérez1,2,3* 1Grupo de Biotecnología de Materiales y Medioambiente (Bio&TecMA, UCA-CONICET), Instituto de Investigaciones en Ingeniería Ambiental, Química y Biotecnología Aplicada (INGEBIO-UCA), Facultad de Química e Ingeniería del Rosario, Pontificia Universidad Católica Argentina (UCA), Av. Pellegrini 3314, S2002QEO Rosario (Santa Fe), Argentina 2Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ministerio de Ciencia, Tecnología e Innovación, Godoy Cruz 2290, C1425FQB CABA (Buenos Aires), Argentina 3UNESCOSOST-Argentina, UNESCO Chair on Sustainability-Universitat Politècnica de Catalunya (UPC-BarcelonaTech), C/ Colom, 1, TR1, ESEIAAT, 08222 Terrassa, Spain Submission: January 04, 2021; Published: April 01, 2021 Corresponding author: Leonardo Martín Pérez, Instituto de Investigaciones en Ingeniería Ambiental, Química y Biotecnología Aplicada (INGEBIO-UCA), Facultad de Química e Ingeniería del Rosario, Pontificia Universidad Católica Argentina (UCA), Av Pellegrini 3314, S2002QEO Rosario (Santa Fe), Argentina
Leonardo马丁Pérez1,2,3 * 1Grupo材料和环境生物技术研究所(Bio&TecMA UCA-CONICET)、环境工程、化学和生物技术研究应用(INGEBIO-UCA化学与工程学院、del Rosario,阿根廷天主教大学(aau)、av佩莱格里尼的3314 S2002QEO Rosario (Santa Fe)、阿根廷2Consejo全国科学技术研究,科学、技术和创新部,联合国教科文组织-阿根廷，联合国教科文组织可持续发展主席-加泰罗尼亚理工大学(UPC-BarcelonaTech)， C/ Colom, 1, TR1, ESEIAAT, 08222 Terrassa，西班牙通讯作者:Leonardo martin perez，环境工程、化学和应用生物技术研究所(INGEBIO-UCA)，罗萨里奥化学和工程学院，Pontificia Universidad catolica Argentina (UCA)， Av Pellegrini 3314, S2002QEO Rosario (Santa Fe)，阿根廷
{"title":"Prospects of Plant-Based Systems as an Eco-Technological Approach for Heavy Metals Removal from Polluted-Waters","authors":"L. M. Pérez","doi":"10.19080/OFOAJ.2021.13.555863","DOIUrl":"https://doi.org/10.19080/OFOAJ.2021.13.555863","url":null,"abstract":"Leonardo Martín Pérez1,2,3* 1Grupo de Biotecnología de Materiales y Medioambiente (Bio&TecMA, UCA-CONICET), Instituto de Investigaciones en Ingeniería Ambiental, Química y Biotecnología Aplicada (INGEBIO-UCA), Facultad de Química e Ingeniería del Rosario, Pontificia Universidad Católica Argentina (UCA), Av. Pellegrini 3314, S2002QEO Rosario (Santa Fe), Argentina 2Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ministerio de Ciencia, Tecnología e Innovación, Godoy Cruz 2290, C1425FQB CABA (Buenos Aires), Argentina 3UNESCOSOST-Argentina, UNESCO Chair on Sustainability-Universitat Politècnica de Catalunya (UPC-BarcelonaTech), C/ Colom, 1, TR1, ESEIAAT, 08222 Terrassa, Spain Submission: January 04, 2021; Published: April 01, 2021 Corresponding author: Leonardo Martín Pérez, Instituto de Investigaciones en Ingeniería Ambiental, Química y Biotecnología Aplicada (INGEBIO-UCA), Facultad de Química e Ingeniería del Rosario, Pontificia Universidad Católica Argentina (UCA), Av Pellegrini 3314, S2002QEO Rosario (Santa Fe), Argentina","PeriodicalId":308766,"journal":{"name":"Oceanography & Fisheries Open access Journal","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133156456","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}
Pub Date : 2021-03-24DOI: 10.19080/OFOAJ.2021.13.555862
J. J. Pérez
River discharges are strongly influenced by rainfall, which, when increasing, is directly proportional to the expenses of the rivers, which are direct fertilizers for the sea [1]. The Tuxpan river is located in the northern coastal area of the state of Veracruz and is located 10 km from the Tuxpan reef and 15 km from the Enmedio and Tanhujio reefs, which are part of the Lobos-Tuxpan (LT) reef matrix located in the north part of the southwestern reef corridor from the Gulf of Mexico [2,3] (Figure 1). The study area is irrigated by the Common Gulf of México Water (CGMW) recirculated by a diurnal tide and dominated by a mesoscale and wind induced circulation [3-5]. It has been a matter of debate by specialists in the study of corals, whether the plume of the Tuxpan river affect the Tuxpan ́s reefs with sandy and mud type sediments which had been found there (Jordán-Garza, personal communication).
{"title":"Could the Plume of Tuxpan River Influence the Norther Reefs of the Reef Corridor of The Southwestern Gulf of Mexico?","authors":"J. J. Pérez","doi":"10.19080/OFOAJ.2021.13.555862","DOIUrl":"https://doi.org/10.19080/OFOAJ.2021.13.555862","url":null,"abstract":"River discharges are strongly influenced by rainfall, which, when increasing, is directly proportional to the expenses of the rivers, which are direct fertilizers for the sea [1]. The Tuxpan river is located in the northern coastal area of the state of Veracruz and is located 10 km from the Tuxpan reef and 15 km from the Enmedio and Tanhujio reefs, which are part of the Lobos-Tuxpan (LT) reef matrix located in the north part of the southwestern reef corridor from the Gulf of Mexico [2,3] (Figure 1). The study area is irrigated by the Common Gulf of México Water (CGMW) recirculated by a diurnal tide and dominated by a mesoscale and wind induced circulation [3-5]. It has been a matter of debate by specialists in the study of corals, whether the plume of the Tuxpan river affect the Tuxpan ́s reefs with sandy and mud type sediments which had been found there (Jordán-Garza, personal communication).","PeriodicalId":308766,"journal":{"name":"Oceanography & Fisheries Open access Journal","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130665776","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}
Pub Date : 2021-03-17DOI: 10.19080/OFOAJ.2021.13.555861
H. Osman
The growth and reproductive biology of the commercially important reef fish, the twobar seabream, Acanthopagrus bifasciatus , were investigated in order to evaluate the impact of fishing on its resource, and to derive information required for its management in the Red Sea. Samples were collected during 2017-2019 from Hurgada fishing harbor. Age was determined by using sagittal otolith. The maximum age recorded was 18 years. The von Bertalanffy growth parameters fit to length at age data were estimated as K = 0.131 year−1, L ∞ = 59.48 cm (TL), t o = −1.778 years. The length-weight relationship for combined sexes was represented by the equation, W=0.0135*L 3.1112 which exhibit positive allometric growth. Spawning was recorded during January and February, and the mean sizes and ages at first sexual maturity were 27.2 cm (2.9 years) for males and 30.1 cm (3.6 years) for females. Sex ratio was (females 50.5%, males 48.4% and hermaphrodites 1.1%). Sex ratio by size indicated that females were dominant among small/young fishes while males were dominant among old/large fishes. This suggested a protogynous hermaphrodite life history style, which may be widespread in Acanthopagrus species. The rate of fishing mortality (F cur = 0.238) exceeded the target (F opt = 0.121), and the limit reference points (F limit = 0.161). Further expansion of the fishery should be constrained.
为了评价捕捞对其资源的影响，并为其在红海的管理获得所需的资料，研究了具有重要商业价值的礁鱼，双棘海鱼的生长和生殖生物学。样本于2017-2019年在赫尔格达渔港采集。用矢状面耳石测定年龄。记录的最高年龄为18岁。与年龄数据拟合的von Bertalanffy生长参数估计为K = 0.131 year - 1, L∞= 59.48 cm (TL)， t = - 1.778 years。组合性别的长权关系为W=0.0135*L 3.1112，表现为正异速生长。1 - 2月产卵，雄鱼平均体长27.2 cm(2.9年)，雌鱼平均体长30.1 cm(3.6年)。性别比为:女性50.5%，男性48.4%，雌雄同体1.1%。大小性别比表明，小鱼以雌鱼为主，大鱼以雄鱼为主。这表明棘棘属物种可能普遍存在一种雌雄同体的生活史。渔获死亡率(F cur = 0.238)超过目标值(F opt = 0.121)和极限参考点(F limit = 0.161)。应限制渔业的进一步扩大。
{"title":"Fisheries Biology of the twobar Seabream, Acanthopagrus bifasciatus from the Egyptian Sector of the Red Sea","authors":"H. Osman","doi":"10.19080/OFOAJ.2021.13.555861","DOIUrl":"https://doi.org/10.19080/OFOAJ.2021.13.555861","url":null,"abstract":"The growth and reproductive biology of the commercially important reef fish, the twobar seabream, Acanthopagrus bifasciatus , were investigated in order to evaluate the impact of fishing on its resource, and to derive information required for its management in the Red Sea. Samples were collected during 2017-2019 from Hurgada fishing harbor. Age was determined by using sagittal otolith. The maximum age recorded was 18 years. The von Bertalanffy growth parameters fit to length at age data were estimated as K = 0.131 year−1, L ∞ = 59.48 cm (TL), t o = −1.778 years. The length-weight relationship for combined sexes was represented by the equation, W=0.0135*L 3.1112 which exhibit positive allometric growth. Spawning was recorded during January and February, and the mean sizes and ages at first sexual maturity were 27.2 cm (2.9 years) for males and 30.1 cm (3.6 years) for females. Sex ratio was (females 50.5%, males 48.4% and hermaphrodites 1.1%). Sex ratio by size indicated that females were dominant among small/young fishes while males were dominant among old/large fishes. This suggested a protogynous hermaphrodite life history style, which may be widespread in Acanthopagrus species. The rate of fishing mortality (F cur = 0.238) exceeded the target (F opt = 0.121), and the limit reference points (F limit = 0.161). Further expansion of the fishery should be constrained.","PeriodicalId":308766,"journal":{"name":"Oceanography & Fisheries Open access Journal","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132629510","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}
Pub Date : 2021-03-11DOI: 10.19080/OFOAJ.2021.13.555860
M. Iqbal
During 2006-2017, we made a series of observations of Boleophthalmus pectinirostris on the east coast of South Sumatra province and Bangka island, Sumatra, Indonesia. This species is very similar to B. boddarti, in size, external morphological characters and behaviour. In this paper, we discuss the external morphological differences between B. pectinirostris and B. boddarti . Records of B. pectinirostris in southern Sumatra increase the known distribution range of this species 800 km southwards, indicating that this species was previously confused with B. boddarti in Indonesian waters.
{"title":"Similar but Different: Differences Hitherto Overlooked between Boleophthalmus pectinirostris and B. boddarti (Teleostei: Oxudercinae) in Indonesian Waters","authors":"M. Iqbal","doi":"10.19080/OFOAJ.2021.13.555860","DOIUrl":"https://doi.org/10.19080/OFOAJ.2021.13.555860","url":null,"abstract":"During 2006-2017, we made a series of observations of Boleophthalmus pectinirostris on the east coast of South Sumatra province and Bangka island, Sumatra, Indonesia. This species is very similar to B. boddarti, in size, external morphological characters and behaviour. In this paper, we discuss the external morphological differences between B. pectinirostris and B. boddarti . Records of B. pectinirostris in southern Sumatra increase the known distribution range of this species 800 km southwards, indicating that this species was previously confused with B. boddarti in Indonesian waters.","PeriodicalId":308766,"journal":{"name":"Oceanography & Fisheries Open access Journal","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134366153","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}
Pub Date : 2021-03-03DOI: 10.19080/OFOAJ.2021.13.555859
N. Saher
The first record of seahorse Hippocampus kelloggi commonly known as the great Seahorse from the coastal waters of Pakistan based on morphological and morphometric characteristics. The Seahorses belong to family Syngnathidae and about 50 species have been reported across the world. They have been found to inhabit coral reefs, seagrass beds and also coastal mangroves. All seahorse species ( Hippocampus sp .) are vulnerable and according to the global conservation status of Hippocampus kelloggi is also among them. H. kelloggi is listed as data deficient since 2003 and then classified as IUCN Red List (http://www.iucnredlist.org) Category & Criteria: A2cd version 3.1 (2017). The Hippocampus kelloggi previously recorded from the Indo Pacific regions, including China; India; Indonesia; Japan; Malaysia; Philippines; Thailand; United Republic of Tanzania; Viet Nam. The current study confirmed the presence of H. kelloggi from the coastal waters of Pakistan.
{"title":"First Record and Morphological Identification of the Seahorse Hippocampus kelloggi Great Seahorse Jordan and Snyder (1902) in Coastal Waters of Pakistan","authors":"N. Saher","doi":"10.19080/OFOAJ.2021.13.555859","DOIUrl":"https://doi.org/10.19080/OFOAJ.2021.13.555859","url":null,"abstract":"The first record of seahorse Hippocampus kelloggi commonly known as the great Seahorse from the coastal waters of Pakistan based on morphological and morphometric characteristics. The Seahorses belong to family Syngnathidae and about 50 species have been reported across the world. They have been found to inhabit coral reefs, seagrass beds and also coastal mangroves. All seahorse species ( Hippocampus sp .) are vulnerable and according to the global conservation status of Hippocampus kelloggi is also among them. H. kelloggi is listed as data deficient since 2003 and then classified as IUCN Red List (http://www.iucnredlist.org) Category & Criteria: A2cd version 3.1 (2017). The Hippocampus kelloggi previously recorded from the Indo Pacific regions, including China; India; Indonesia; Japan; Malaysia; Philippines; Thailand; United Republic of Tanzania; Viet Nam. The current study confirmed the presence of H. kelloggi from the coastal waters of Pakistan.","PeriodicalId":308766,"journal":{"name":"Oceanography & Fisheries Open access Journal","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129367305","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}
Pub Date : 2021-02-22DOI: 10.19080/OFOAJ.2021.13.555858
S. Jinadasa
In order to obtain first insights on the ocean turbulence and mixing in the waters around Sri Lanka, the microstructure measurements in the South Monsoon Current to the south of Weligama (along 80.5°E and near the shelf break) and in the East Indian Coastal Current in the Bay of Bengal to the east of Trincomalee (along 8°N) was conducted by National Aquatic Resources Research and Development Agency (NARA) of Sri Lanka aboard the research vessel Samuddrika. It is shown that in strongly startified pycnocline, which is dynamically detached from the low-sa-line surface mixed layer, the probability distributions of the logarithm of the kinetic energy dissipation rate follow generalized extreme value (GEV) model. This could be associated with the occurrence of rare highly-energetic turbulent patches in the pycnocline due to intermittent breaking of internal-wave and sporadic shear-induced instabilities. The mixing Reynolds number (a nomalized eddy diffusivity) was found to be a function of the gradient Richardson number, and followed the parameterization proposed by [1].
{"title":"Turbulence and Mixing in Energetic Environment of the Coastal Waters of Sri Lanka","authors":"S. Jinadasa","doi":"10.19080/OFOAJ.2021.13.555858","DOIUrl":"https://doi.org/10.19080/OFOAJ.2021.13.555858","url":null,"abstract":"In order to obtain first insights on the ocean turbulence and mixing in the waters around Sri Lanka, the microstructure measurements in the South Monsoon Current to the south of Weligama (along 80.5°E and near the shelf break) and in the East Indian Coastal Current in the Bay of Bengal to the east of Trincomalee (along 8°N) was conducted by National Aquatic Resources Research and Development Agency (NARA) of Sri Lanka aboard the research vessel Samuddrika. It is shown that in strongly startified pycnocline, which is dynamically detached from the low-sa-line surface mixed layer, the probability distributions of the logarithm of the kinetic energy dissipation rate follow generalized extreme value (GEV) model. This could be associated with the occurrence of rare highly-energetic turbulent patches in the pycnocline due to intermittent breaking of internal-wave and sporadic shear-induced instabilities. The mixing Reynolds number (a nomalized eddy diffusivity) was found to be a function of the gradient Richardson number, and followed the parameterization proposed by [1].","PeriodicalId":308766,"journal":{"name":"Oceanography & Fisheries Open access Journal","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122748260","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}
Pub Date : 2021-02-16DOI: 10.19080/OFOAJ.2021.13.555857
K. Krishna
The concentration of chlorophyll-a (Chl-a) is influenced by the impact of El-Nino southern oscillation in Bay of Bengal sea water. In this study using data, monthly mean chlorophyll data derived from the sea-viewing Wild of view-sensor, the sea surface temperature is derived from the National Oceanic and Atmospheric Administration Advanced Very High-Resolution Radiometer, satellite derived monthly wind data is derived from the using CCMP, satellite altimeter sea surface height anomaly data derived from the TOPEX and the monthly mean mixed layer depth is taken from the Argo gridded data. The study period in this study is 1980-2017 (January-December) were analyzed the provincial nature of the ENSO linked with the above parameters. This satellite derived ocean data was used to identify the variability of the chlorophyll-a in Bay of Bengal associated with the ENSO. The witness of the Bay of Bengal is varied and response of climate modes due to El-Nino southern oscillation. These changing climate models have been impacting and influence the chlorophyll productivity in Bay of Bengal waters. Keeping in this view this study attempts to analyze the chlorophyll activity during the strong El-Nino years (1993, 1988, 1992, 1998, 2010, 2016) and strong La-Nina years (1989, 1999, 2000, 2008) in Bay of Bengal. In this study we must choose six provinces and observed that the variability and response of chlorophyll variability in Bay of Bengal during with peak El-Nino years (2010&2016) and La-Nina years (2008&2011) in Bay of Bengal. The relation between sea surface temperature and Chl-a indicates that, during peak El-Nino years the low Chl-a concentration were observed due to down-welling process. The high Chl-a concentration (0.15mg/m 3 ) were observed during peak La-Nina years in Bay of Bengal. The variability of the chlorophyll concentration is used to understand and improve the climate mode at different provinces in Bay of Bengal during ENSO time.
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Pub Date : 2021-02-04DOI: 10.19080/OFOAJ.2021.13.555856
D. Kar
Studies revealed rich biodiversity of fishes in North-East (NE) India biodiversity (BD) hotspot region. Fish habitats portrayed both lotic and lentic systems having different types of microhabitats and substrata in different stretches. Various limnological and ichthyological studies were done on Sone Beel wetland of national importance. Various studies were done on the zooplankton of different wetlands. Integrated Fish farming with fish and pigs have been found to a profitable venture. Occurrence of parasites have been reported from fishes in various wetlands. The dreadful EUS fish disease has been killing innumerable fishes of this region rendering many of them endangered. Attempts are being made to manage and conserve the fishes of the region through Community Based Fisheries Management (CBFM) involving the stakeholders from the grass root level.
{"title":"Fish and Their Habitats in North-East India Biodiversity Hotspot","authors":"D. Kar","doi":"10.19080/OFOAJ.2021.13.555856","DOIUrl":"https://doi.org/10.19080/OFOAJ.2021.13.555856","url":null,"abstract":"Studies revealed rich biodiversity of fishes in North-East (NE) India biodiversity (BD) hotspot region. Fish habitats portrayed both lotic and lentic systems having different types of microhabitats and substrata in different stretches. Various limnological and ichthyological studies were done on Sone Beel wetland of national importance. Various studies were done on the zooplankton of different wetlands. Integrated Fish farming with fish and pigs have been found to a profitable venture. Occurrence of parasites have been reported from fishes in various wetlands. The dreadful EUS fish disease has been killing innumerable fishes of this region rendering many of them endangered. Attempts are being made to manage and conserve the fishes of the region through Community Based Fisheries Management (CBFM) involving the stakeholders from the grass root level.","PeriodicalId":308766,"journal":{"name":"Oceanography & Fisheries Open access Journal","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116895119","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}
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