خيارات البحث
النتائج 1 - 10 من 18
Influence of intensive net cage farming on hydrodynamic and geochemical environmental conditions and the mass mortality of abalone in South Korea
2021
Sim, Bo-Ram | Kim, Hyung-Chul | Kang, Sungchan | Park, Kyeong Dong | Yoon, Sunyoung | Hong, Sokjin | Yoon, Sang-Pil | Kim, Jeong Bae | Lee, Won-Chan
The abalone aquaculture industry in South Korea has grown rapidly since the 2000s. In this study, we investigated the sedimentary pollution at four major abalone farms responsible for ~60% of all South Korean abalone produced. We also surveyed the current statuses of cage facilities, abalone mass mortality, and current velocities within and outside farm cages. The concentrations of total organic carbon in the study area were 7.92 ± 2.09 mg g⁻¹, indicating a mild level of sedimentary pollution. We observed higher mortality rates in rectangular-shaped shelter cages than in triangular shelters. With increases in the number and size of abalone farming facilities, current velocities inside the cages declined by an average of 45% relative to those outside the cages, leading to poor habitat conditions for farmed abalone. Our results provide insights into the current status of the benthic environments and major causes of mass mortality in the abalone farms of South Korea.
اظهر المزيد [+] اقل [-]A pilot study on remediation of sediments enriched by oyster farming wastes using granulated coal ash
2015
Yamamoto, T. | Kim, K.H. | Shirono, K.
In order to evaluate the ability of granulated coal ash (GCA), a byproduct of coal thermal electric power stations, to remove hydrogen sulfide from organically enriched sediments, a pilot study was carried out at oyster farming sites, where sediments were enriched with oyster feces and dead oysters. Concentration of hydrogen sulfide in the interstitial water of the sediment decreased to nearly zero in both experimental sites, whereas it remained over 0.2mg/l in the control site. Concentration of acid volatile sulfide (AVS) in the sediment also decreased significantly in both experimental sites, while remained over 0.4mg/g in the control site. Increases were observed in both the number of benthic microalgae species and the individual number of benthic animals in the surface sediments. This may have been due to the decrease in hydrogen sulfide.
اظهر المزيد [+] اقل [-]Cadmium and methylmercury bioaccumulation by nymphs of the burrowing mayfly Hexagenia rigida from the water column and sediment
1995
Odin, M. | Ribeyre, F. | Boudou, A. (Bordeaux Univ., Talence Cedex (France). Lab. d'Ecotoxicologie)
Temporal and spatial variations in dominance, diversity and biotic indices along a limestone stream receiving a trout farm effluent
1992
Camargo, J.A. (Center of Research and Technology INIA, Madrid (Spain))
[Benthic foraminifera (protozoa) as biomarkers of pollution in coastal area: situation on knowledge]
1995
Bourdillon, C. (Bureau de Recherches Geologiques et Minieres, Orleans (France))
Biochemical markers of pollution by polycyclic aromatic compounds in mussel and fish: field studies on the French coast of the Mediterranean sea
1995
Narbonne, J.F. (Universite de Bordeaux 1 (France). Laboratoire de Toxicologie Alimentaire) | Ribera, D. | Michel, X. | Lafaurie, M. | Monod, J.L. | Raoux, C. | Garrigues, P.
[In situ experimentation as an evaluative criterion of pollution effects: a study of evolutionary mechanisms and repopulation of polluted sediments]
1987
Stora, G. (Centre d'Oceanologie de Marseille-Station Marine d'Endoume, Marseille (France)) | Arnoux, A. | Diana, C.
Occurrence of tintinnids in two polluted areas of Alexandria coast
1987
Dorgham, M.M. (Qatar Univ., Doha (Qatar). Dept. of Marine Science)
[Modifications in the planktonic ecosystem caused by pollution of Lebanese coastal waters]
1987
Lakkis, S. (Universite Libanaise, Hadeth (Lebanon). Faculte des Sciences) | Zeidane, R.
Changes in the benthic communities due to various pollutants in Izmir Bay (Turkey)
1987
Kocatas, A. | Ergen, Z. | Katagan, T. (Ege Univ., Izmir (Turkey). Faculty of Science)
