Oceanological and Hydrobiological Studies最新文献_第9页

Determination of functional structure of soft-bottom marine macrobenthic communities of the Samsun Shelf Area using biological traits analysis 利用生物性状分析确定桑孙大陆架软底海洋大型底栖生物群落的功能结构

IF 0.9 4区环境科学与生态学

Oceanological and Hydrobiological Studies Pub Date : 2021-12-01 DOI: 10.2478/oandhs-2021-0040

Ayşe Van, A. Gümüş

{"title":"Determination of functional structure of soft-bottom marine macrobenthic communities of the Samsun Shelf Area using biological traits analysis","authors":"Ayşe Van, A. Gümüş","doi":"10.2478/oandhs-2021-0040","DOIUrl":"https://doi.org/10.2478/oandhs-2021-0040","url":null,"abstract":"Abstract Biological Traits Analysis (BTA) was used to investigate the functional structure of marine macrobenthic communities along the Samsun Shelf Area (SSA). Benthic samples were collected seasonally from five different locations and at four different depths using a Van Veen grab sampler. Macrofaunal communities distributed in the SSA were assessed using 10 biological traits to identify characteristic traits for each depth and location. It was found that variability of benthic ecosystem functions in the SSA was driven by biological traits such as maximum size, living habit, sediment position, feeding mode and type of reproductive behavior. Bivalves, polychaetes and crustaceans of small to medium size, biodepositing, burying themselves in the sediment (burrowers) and feeding in suspension were relatively more abundant at depths of 0–60 m. However, the biomass of Amphiura, Abra, Papillicardium and some polychaetes characterized by medium to large sizes, diffusive mixing, free living and feeding on deposit and subsurface deposit showed higher values at depths below 60 m. In general, it is concluded that the functional structure of the benthic infauna in the SSA has adapted to physical disturbance, and communities distributed in this area consist mainly of taxa resistant to mechanical pressure.","PeriodicalId":19407,"journal":{"name":"Oceanological and Hydrobiological Studies","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46654152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Distribution of oil, grease and polycyclic aromatic hydrocarbons in coastal water and sediments of Suez Bay 苏伊士湾沿岸水体和沉积物中石油、油脂和多环芳烃的分布

IF 0.9 4区环境科学与生态学

Oceanological and Hydrobiological Studies Pub Date : 2021-12-01 DOI: 10.2478/oandhs-2021-0032

R. Elmorsi

引用次数: 2

Growth pattern, mortality and reproductive biology of common sole, Solea solea (Linneaus, 1758), in the Sea of Marmara, Turkey 土耳其马尔马拉海常见比目鱼Solea Solea（Linneaus，1758）的生长模式、死亡率和繁殖生物学

IF 0.9 4区环境科学与生态学

Oceanological and Hydrobiological Studies Pub Date : 2021-12-01 DOI: 10.2478/oandhs-2021-0034

A. Kahraman, T. Yıldız, Uğur Uzer, Ö. Çanak

{"title":"Growth pattern, mortality and reproductive biology of common sole, Solea solea (Linneaus, 1758), in the Sea of Marmara, Turkey","authors":"A. Kahraman, T. Yıldız, Uğur Uzer, Ö. Çanak","doi":"10.2478/oandhs-2021-0034","DOIUrl":"https://doi.org/10.2478/oandhs-2021-0034","url":null,"abstract":"Abstract The study deals with the growth pattern, mortality, and reproduction of common sole, Solea solea (Linneaus, 1758), from the Sea of Marmara (Turkey). A total of 580 fish specimens were sampled monthly from October 2017 to September 2018. The total length of all sampled individuals ranged from 11.1 to 29.5 cm, corresponding to ages from 1 to 3 years. The length–weight relationship was expressed as W = 0.022 TL2.6838, where the slope indicated negative allometric growth. Growth parameters were L∞ = 33.7 cm, k = 0.48, and t0 = −0.18 for all samples. A seasonally oscillating growth model, indicating the amplitude of oscillations, revealed an important seasonal growth pattern. Total, natural, and fishing mortality rates were calculated as 1.42, 0.47, and 1.01, respectively. The exploitation ratio (E = 0.68) indicates that the fishing pressure on the common sole in the Sea of Marmara was high. The sex ratio (♀/♂) was 1.18. The gonadosomatic index (GSI) for females showed that two main spawning seasons were observed: one in spring (May) and one in autumn (September–October). Sizes at the onset of sexual maturity were estimated for both females and males at 21.6 and 18.6 cm, respectively.","PeriodicalId":19407,"journal":{"name":"Oceanological and Hydrobiological Studies","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49648495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Empirical approach to risk management strategies of Mediterranean mussel farmers in Greece 希腊地中海贻贝养殖户风险管理策略的实证研究

IF 0.9 4区环境科学与生态学

Oceanological and Hydrobiological Studies Pub Date : 2021-12-01 DOI: 10.2478/oandhs-2021-0039

J. Theodorou, I. Tzovenis, G. Katselis

{"title":"Empirical approach to risk management strategies of Mediterranean mussel farmers in Greece","authors":"J. Theodorou, I. Tzovenis, G. Katselis","doi":"10.2478/oandhs-2021-0039","DOIUrl":"https://doi.org/10.2478/oandhs-2021-0039","url":null,"abstract":"Abstract Risk perception and risk responses of Greek mussel farmers are important for understanding their risk behavior and the likely success of different risk mitigation strategies. This allows policy makers and actuarial companies to decide what risk management products to offer to address specific types of risks. Results from an empirical survey showed that ex-farm prices and health/disability status of farmers are perceived as the most important sources of risk. Risk management decisions were strongly influenced by the attitudes of mussel farmers rather than their socioeconomic status or perception of risk sources. Financial reserves and an alternative source of stable income are both preferred by mussel farmers as risk management strategies, while optimizing farm management to produce at the lowest possible cost is commonly practiced to eliminate losses. Farmers recommend that for certain types of risks that lead to total losses, e.g. anoxia, tsunamis, harmful algal blooms (HABs), insurance contracts should be provided by the public sector, as in similar situations in agriculture. For other needs, customized insurance contracts should be provided by the actuarial market.","PeriodicalId":19407,"journal":{"name":"Oceanological and Hydrobiological Studies","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42624565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Tunisian inland water microflora as a source of phycobiliproteins and biological activity with beneficial effects on human health 突尼斯内陆水域微生物群落是藻胆蛋白的来源和对人类健康有益的生物活性

IF 0.9 4区环境科学与生态学

Oceanological and Hydrobiological Studies Pub Date : 2021-12-01 DOI: 10.2478/oandhs-2021-0033

Khaled Gharbi, A. Fathalli, R. Essid, C. Fassatoui, M. Romdhane, F. Limam, A. R. Rejeb Jenhani

{"title":"Tunisian inland water microflora as a source of phycobiliproteins and biological activity with beneficial effects on human health","authors":"Khaled Gharbi, A. Fathalli, R. Essid, C. Fassatoui, M. Romdhane, F. Limam, A. R. Rejeb Jenhani","doi":"10.2478/oandhs-2021-0033","DOIUrl":"https://doi.org/10.2478/oandhs-2021-0033","url":null,"abstract":"Abstract Ten monoclonal microalgal cultures were obtained from several Tunisian inland water bodies, and their dichloromethane and methanolic extracts were screened for antibacterial, antileishmanial, and antioxidant properties, as well as phycobiliprotein production capacity. Cylindrospermopsis raciborskii has been shown to synthesize high levels of phycocyanin and may be an effective alternative source to other sources used for commercial production of phycocyanin. Chroococcus sp. and Leptolyngbya sp1. exhibited the strongest radical scavenging activity against DPPH (IC50 = 212.15 and 263.91 μg ml−1, respectively), indicating their promising potential for use as new effective and non-toxic antioxidants. Furthermore, Dunaliella sp. showed an interesting antileishmanial activity against the pathogens Leishmania infantum and Leishmania major (IC50 = 151 and 284 μg ml−1, respectively), thus representing a good candidate for use against cutaneous and visceral leishmaniasis in Tunisia, a country endemic to these diseases where thousands of new cases are registered every year. These results suggest that the strains of microalgae featured in this work have the potential to serve as natural alternative, safe and sustainable sources of high value-added products that could be used to improve the final biomass value.","PeriodicalId":19407,"journal":{"name":"Oceanological and Hydrobiological Studies","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47672494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of heavy metal contamination in surface sediments of Iskenderun Bay, Turkey 土耳其伊斯肯德伦湾表层沉积物重金属污染分析

IF 0.9 4区环境科学与生态学

Oceanological and Hydrobiological Studies Pub Date : 2021-12-01 DOI: 10.2478/oandhs-2021-0035

B. Kutlu, Tahir Özcan, G. Özcan

引用次数: 3

Effect of water quality on the spatial distribution of charophytes in the Peshawar Valley, Khyber Pakhtunkhwa, Pakistan 水质对巴基斯坦开伯尔-普赫图赫瓦白沙瓦河谷轮藻空间分布的影响

IF 0.9 4区环境科学与生态学

Oceanological and Hydrobiological Studies Pub Date : 2021-12-01 DOI: 10.2478/oandhs-2021-0031

Izaz Khuram, N. Ahmad, S. Barinova

{"title":"Effect of water quality on the spatial distribution of charophytes in the Peshawar Valley, Khyber Pakhtunkhwa, Pakistan","authors":"Izaz Khuram, N. Ahmad, S. Barinova","doi":"10.2478/oandhs-2021-0031","DOIUrl":"https://doi.org/10.2478/oandhs-2021-0031","url":null,"abstract":"Abstract The presented research was conducted in 2018–2019 in the Peshawar Valley, Pakistan, to study for the first time the effect of water quality on the spatial distribution of charophytes. A total of six taxa of charophytes were found at 41 sites in the Peshawar Valley along the banks of seven rivers, 16 streams and two wetlands: Chara braunii C.C.Gmelin, C. connivens Salzmann ex A. Braun, C. contraria A. Braun ex Kützing, C. globularis Thuiller, C. vulgaris Linnaeus, and Nitellopsis obtusa (Desvaux) J. Groves. Chara vulgaris was the most abundant species, followed by C. globularis, and C. contraria. Water pH, electrical conductivity (EC), total dissolved solids (TDS), salinity and dissolved oxygen (DO) were within the permissible limits for Pakistan, while water temperature, oxidation reduction potential (ORP) and resistivity showed deviations. Canonical Correspondence Analysis (CCA) revealed that DO affected Chara vulgaris, pH and resistivity affected C. braunii, C. connivens and C. globularis, temperature and ORP affected C. contraria and Nitellopsis obtusa. Furthermore, CCA showed that TDS, EC, and salinity had no effect on the spatial distribution of Chara contraria, C. vulgaris and Nitellopsis obtusa. Chara contraria and Nitellopsis obtusa should be protected under VU (Vulnerable) status (IUCN) along with their habitats.","PeriodicalId":19407,"journal":{"name":"Oceanological and Hydrobiological Studies","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49597501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Otolith phenotypic analysis for the endemic Anatolian fish species, Caucasian bleak Alburnus escherichii Steindachner, 1897 (Teleostei, Leuciscidae), from Selevir Reservoir, Akarçay Basin, Turkey 土耳其akaray盆地Selevir水库安纳托利亚特有种鱼Caucasian bleak Alburnus escherichii Steindachner, 1897 (Teleostei, Leuciscidae)的耳石表型分析

IF 0.9 4区环境科学与生态学

Oceanological and Hydrobiological Studies Pub Date : 2021-12-01 DOI: 10.2478/oandhs-2021-0037

M. Ozpicak, S. Saygın, S. Yılmaz, N. Polat

{"title":"Otolith phenotypic analysis for the endemic Anatolian fish species, Caucasian bleak Alburnus escherichii Steindachner, 1897 (Teleostei, Leuciscidae), from Selevir Reservoir, Akarçay Basin, Turkey","authors":"M. Ozpicak, S. Saygın, S. Yılmaz, N. Polat","doi":"10.2478/oandhs-2021-0037","DOIUrl":"https://doi.org/10.2478/oandhs-2021-0037","url":null,"abstract":"Abstract Otolith phenotypic variability was analyzed in the Caucasian bleak (Alburnus escherichii) from the Selevir Reservoir in Turkey. Utricular (lapillus) and lagenar (asteriscus) otoliths were removed, while distinguishing between left and right otoliths. All otoliths were photographed on the distal (for asterisci) and dorsal surface (for lapilli) using a Leica DF295 digital camera. Otolith morphometrics were measured to the nearest 0.001 mm using Leica Imaging Software. Linear and nonlinear (power) models were applied to determine the relationships between otolith measurements and total length of fish individuals. Two length classes (Class I: 6.7–10.9 cm Lt; Class II: 11.0–15.0 cm Lt) were established to analyze the shape of otoliths. The Form Factor, Circularity, Roundness, Rectangularity, Aspect Ratio and Ellipticity were used to analyze the shape of otoliths. A standardized model was used to remove the effect of size on otolith measurements. Multivariate analysis was performed to detect differences in otolith shape variation. The results of discriminant function analysis showed that 79.9% of A. escherichii specimens were correctly classified by length classes. In this study, intraspecific variation of asteriscus and lapillus otoliths in A. escherichii is reported for the first time. The results of this study provide the first comprehensive data on otolith shape analysis and the relationship between otolith morphometrics and total length in the Caucasian bleak.","PeriodicalId":19407,"journal":{"name":"Oceanological and Hydrobiological Studies","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46200521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Effects of seasonal changes and depth on growth parameters of the Mediterranean mussel (Mytilus galloprovincialis) on a shipwreck in the Eastern Mediterranean Sea 季节变化和深度对地中海东部沉船事故中地中海贻贝（Mytilus galloprovincialis）生长参数的影响

IF 0.9 4区环境科学与生态学

Oceanological and Hydrobiological Studies Pub Date : 2021-12-01 DOI: 10.2478/oandhs-2021-0038

Tuğçe Şensurat-Genç, Onur Karadal, A. Ç. Oruç, Aytaç Özgül, Altan Lök

{"title":"Effects of seasonal changes and depth on growth parameters of the Mediterranean mussel (Mytilus galloprovincialis) on a shipwreck in the Eastern Mediterranean Sea","authors":"Tuğçe Şensurat-Genç, Onur Karadal, A. Ç. Oruç, Aytaç Özgül, Altan Lök","doi":"10.2478/oandhs-2021-0038","DOIUrl":"https://doi.org/10.2478/oandhs-2021-0038","url":null,"abstract":"Abstract The study was conducted between July 2018 and May 2020 to compare seasonal changes in growth parameters of the Mediterranean mussel (Mytilus galloprovincialis) at different depths in two different areas of the Northeastern Mediterranean Sea (Aegean Sea). In a preliminary study, mussels were placed in cages at different depths of an artificial reef (AR – shipwreck) and natural reef (NR). Temperature, salinity, pH, and dissolved oxygen were determined seasonally at both sites at a depth of 37 m (deepwater) and 25 m (midwater). Linear increases in length and width of mussels at the AR site were recorded, while no consistent changes were observed for mussels at the NR. There was negative correlation between the specific growth rate (SGR) and salinity (r2 = 0.5098) and temperature (r2 = 0.1470) at the AR site. Negative correlations were also recorded between pH and the commercial condition index (CCI) at both the AR (r2 = 0.3869) and NR (r2 = 0.3600) sites. Our findings show that depth had a significant effect (p < 0.05) on the CCI of mussels at the NR site, while its effect was insignificant for this index at the AR site (p > 0.05). This study indicates that natural reefs provide more suitable conditions for the growth of Mediterranean mussels than shipwrecks used as artificial reefs.","PeriodicalId":19407,"journal":{"name":"Oceanological and Hydrobiological Studies","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45394319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Effects of seasonal changes and environmental factors on bioindicator bacteria levels in Çardak Lagoon, Çanakkale Strait, Turkey 季节变化和环境因素对土耳其Çanakkale海峡Çardak泻湖生物指示菌水平的影响

IF 0.9 4区环境科学与生态学

Oceanological and Hydrobiological Studies Pub Date : 2021-09-01 DOI: 10.2478/oandhs-2021-0025

Ibrahim Ender Künili, A. Suat Ateş

{"title":"Effects of seasonal changes and environmental factors on bioindicator bacteria levels in Çardak Lagoon, Çanakkale Strait, Turkey","authors":"Ibrahim Ender Künili, A. Suat Ateş","doi":"10.2478/oandhs-2021-0025","DOIUrl":"https://doi.org/10.2478/oandhs-2021-0025","url":null,"abstract":"Abstract Çardak Lagoon is one of the most important marine environments in the Turkish Strait system, which is home to a variety of organisms. The lagoon is currently under stress and faces the risk of heavy pollution. For this reason, the present state of the lagoon was monitored in this study. During sampling from October 2018 to June 2019, the levels of indicator microorganisms fluctuated up to 4.04 Log10 cfu 100 ml−1 and their presence was found to be higher in warmer seasons. The highest positive correlations were observed for total coliform levels with salinity and chemical oxygen demand, whereas the highest negative correlations were found between the levels of fecal coliforms, pH and temperature. E. coli and fecal streptococci showed moderate correlations with the environmental factors in all seasons. Although nitrite and nitrate (NO2 + NO3) were not significantly correlated with bacteria levels, they were present at elevated levels. Çardak Lagoon showed the lowest microbiological and chemical quality in the summer season, and this situation continued into the autumn season as a possible result of increased wastewater discharge and human activities. The lagoon should therefore be monitored regularly and precautions should be taken to prevent severe ecological deterioration.","PeriodicalId":19407,"journal":{"name":"Oceanological and Hydrobiological Studies","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47689276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1