Article
Marine & Freshwater Biology
Guandong Li, Kehui Xu, Z. George Xue, Haoran Liu, Samuel J. Bentley
Summary: Barataria Bay serves as a receiving basin for a large sediment diversion project in Louisiana, USA, with data showing that salinity variations are controlled by wind and tidal currents in the region. Sediment resuspension is primarily triggered by wave-current shear stress, with net sediment transport occurring during cold front passages. Sediment transport direction and magnitude change significantly with shifting wind patterns, impacting wetland sedimentation and potential sediment escape from the bay. The timing of diversion operations, wind directions, and water levels should all be considered for effective future management of coastal areas.
ESTUARINE COASTAL AND SHELF SCIENCE
(2021)
Article
Environmental Sciences
Yun Ma, Tianwei Xu, Qiao Mao, Xinmei Zhou, Rui Wang, Jianqiang Sun, Anping Zhang, Shanshan Zhou
Summary: The study on the distribution patterns of OCPs in the surface sediments collected from Prydz Bay, Antarctica revealed that concentrations were mainly influenced by HCHs and DDTs, with a distinct quasiconcentric circle pattern controlled by total organic carbon and local hydrodynamic conditions. Source apportionment indicated that HCHs and chlordanes were primarily derived from long range atmospheric transport. Annual sedimentary fluxes of OCPs in Antarctica were one to three orders of magnitude lower than some data from the Arctic areas, implying a long active lifetime of OCPs in the Antarctic environment.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Jing Nie, Sana Mirza, Michael Viteritto, Yuanyi Li, Benjamin B. Witherell, Yang Deng, Shinjae Yoo, Huan Feng
Summary: This study was conducted to estimate nutrient fluxes and residence time in Newark Bay by collecting biweekly concentration data of total inorganic nitrogen (TIN) and orthophosphate from the Passaic River, the Hackensack River, and Newark Bay over a period of 15 years (2004-2019). The annual loading of TIN and ortho-P from the Passaic River ranged from 915 x 10(3) kg y(-1) to 251 x 10(4) kg y(-1) and 94 x 10(3) kg y(-1) to 372 x 10(3) kg y(-1) respectively. The annual loading of TIN and ortho-P from the Hackensack River ranged from 3.13 x 10(3) kg y(-1) to 234 x 10(3) kg y(-1) and 0.28 x 10(3) kg y(-1) to 6.97 x 10(3) kg y(-1) respectively. Seasonal variation showed that hurricane events significantly increased nutrient loading from riverine input and decreased residence time in Newark Bay.
MARINE POLLUTION BULLETIN
(2023)
Article
Biodiversity Conservation
Qi Yan, Tingting Cheng, Junting Song, Jin Zhou, Chin-Chang Hung, Zhonghua Cai
Summary: Shenzhen Bay, as a highly eutrophic area, is mainly influenced by internal nutrient loading which contributes 65% and 69% of total input fluxes of dissolved DIN and PO43--P. Sediment resuspension plays a significant role in providing nitrogen and bioavailable phosphate to the bay, while a considerable amount of DIN and PO43--P are exported through water exchange and residual flows into the Pearl River.
ECOLOGICAL INDICATORS
(2021)
Article
Environmental Sciences
Daniel J. Nowacki, Neil K. Ganju
Summary: Bay-marsh systems, consisting of an embayment and fringing marshes, are influenced by external sediment availability, marsh-edge erosion, and sea-level rise. Observations reveal a divergent sedimentary system where most suspended sediment is exported seaward, with a smaller fraction imported landward through tidal channels.
ESTUARIES AND COASTS
(2021)
Article
Multidisciplinary Sciences
Romy Hulskamp, Arjen Luijendijk, Bas van Maren, Antonio Moreno-Rodenas, Floris Calkoen, Etienne Kras, Stef Lhermitte, Stefan Aarninkhof
Summary: This study presents a global assessment of the distribution and change of muddy coasts using satellite imagery and coastal geospatial datasets. The findings show that 14% of the world's ice-free coastline is muddy, with the majority experiencing erosion rates exceeding 1 meter per year over the past three decades.
NATURE COMMUNICATIONS
(2023)
Article
Environmental Sciences
Yuichi Horii, Kotaro Minomo, James C. W. Lam, Nobuyoshi Yamashita
Summary: The study investigated mass loading and spatial distribution of volatile methylsiloxanes (VMSs) in Tokyo Bay, Japan, revealing elevated mass loadings of VMSs in certain rivers inflowing to the bay. The historical pollution profiles of VMSs in estuarine sediments suggest a correlation with the historical use of VMSs and potential impact on the aquatic environment.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Microbiology
Autif Hussain Mangi, Qi Yan, Xiao Song, Junting Song, Xia Lan, Jin Zhou, Zhong-Hua Cai
Summary: Oysters are ecological engineers whose role in the aquatic environment remains debated. However, research shows that oyster biodeposition (OBD) significantly decreases total organic carbon and total nitrogen in sediments, alleviating nutrient overload in sediment under oyster farming. Microbial metabolic roles are likely responsible for enhancing carbon/nitrogen flux speed and reducing overall nutrient status.
FRONTIERS IN MICROBIOLOGY
(2021)
Review
Environmental Sciences
A. Polrot, J. R. Kirby, J. W. Birkett, G. P. Sharples
Summary: This paper reviews the potential coupling of sediment management and (bio)remediation in the maritime environment and ports, highlighting a sustainable alternative method to address siltation. It discusses the positive remediation effect of fluidizing sediment in situ and points out the lack of full-scale field applications for potential remediation techniques. Additionally, an overview of port contamination, remediation, and recent research on aerobic (bio)degradation of port contaminants is provided.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Claudia I. Mazur, Alia N. Al-Haj, Nicholas E. Ray, Isabel Sanchez-Viruet, Robinson W. Fulweiler
Summary: This study in Long Island Sound showed that sediments have high oxygen demand in the western basin during summer, are a source of dissolved inorganic N and P, and release greenhouse gases N2O and methane. The efficiency of benthic metabolism is around 30%, with the potential to remove approximately 9% of the total land-based N load entering Long Island Sound.
Article
Environmental Sciences
Chunhui Yang, Pan Yang, Hongbin Yin
Summary: This study conducted an in situ experiment to control sediment nutrient loading and fluxes in the confluence area using modified zeolite (MZ) in combination with poly aluminum chloride (PAC) and lanthanum-modified bentonite (LMB). The results showed a significant reduction in phosphorus and nitrogen fluxes under the influence of external loading, but efficiency decreased during summertime algal blooming season. The control efficiency varied with different inactivation agents and dosing methods and was largely reduced under the influence of external loading and algal blooms.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Wei He, Siyuan Feng, Yonghong Bi, Aili Jiang, Yuan Li, Wei Huang, Jian Zhang, Hui Xu, Chunsheng Liu
Summary: This study investigates the effects of water level fluctuations (WLFs) on bays in the Three Gorges Reservoir (TGR) area. The results show that both upward and downward WLFs can change water exchange and nutrient distribution in the bays, which helps control nutrient concentrations and prevent algal blooms.
ENVIRONMENTAL RESEARCH
(2023)
Article
Marine & Freshwater Biology
Kazuhiro Aoki, Yugo Shimizu, Toshihiro Yamamoto, Kazuki Yokouchi, Kaori Kishi, Hideyuki Akada, Hiroaki Kurogi
Summary: This study quantified the offshore-derived nutrient loading in a semienclosed bay and discussed its contribution to oligotrophication. It found a significant decadal change in the inward nutrient flux and suggested that the decrease in nutrient flux from offshore contributes to oligotrophication in Tokyo Bay.
ESTUARINE COASTAL AND SHELF SCIENCE
(2022)
Article
Environmental Sciences
W. R. Boynton, M. A. C. Ceballos, C. L. S. Hodgkins, D. Liang, J. M. Testa
Summary: This study conducted measurements of sediment-water fluxes in Chesapeake Bay and Maryland Coastal Bays, and analyzed the primary controlling factors and relative contribution of sediment-water fluxes to nutrient cycling. Hotspots for sediment-water fluxes were identified, and statistical models showed that temperature, bottom water oxygen and nutrient concentration, and sediment organic matter were important controlling variables. Long-term variations in fluxes exhibited weak evidence of trends, while interannual variability was related to water column and sediment variables. Additionally, the importance of recycled nutrients in these shallow systems was revealed.
ESTUARIES AND COASTS
(2023)
Review
Environmental Sciences
Sofia L. D'Ambrosio, John A. Harrison
Summary: This article provides a critical review of methods used to estimate the diffusive flux of CH4 from lake sediments, including incubation, benthic chambers, and modeling approaches. The limitations and advantages of each method are discussed, along with published comparisons between different methods. The article also highlights the need for the development and application of new methods to advance understanding of lake CH4 fluxes.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Environmental Sciences
Leslie Mabon, Jun Kita, Hiromitsu Onchi, Midori Kawabe, Toshiya Katano, Hiroshi Kohno, Yi-Chen Huang
MARINE POLLUTION BULLETIN
(2020)
Article
Marine & Freshwater Biology
Takaharu Hamada, Sangyeob Kim
Summary: The Simpson's stratification index phi may have limitations in scenarios with significant tidal amplitudes, therefore the stratification potential-energy anomaly V* is proposed as a more suitable standardized stratification index in estuaries and regions of freshwater influence. Analysis of observational data from Isahaya Bay in Japan shows that the V* index is most effective in removing tidal cycle fluctuations.
ESTUARINE COASTAL AND SHELF SCIENCE
(2021)
Article
Multidisciplinary Sciences
Ayumi Tsunashima, Hiroshi Itoh, Toshiya Katano
Summary: The study investigated the abundance and egg production of Acartia omorii in Tokyo Bay, Japan, revealing that temperature and phytoplankton community composition have significant impacts on egg production. Subitaneous eggs may contribute to population development in spring, while diapause eggs enhance their recurrence in winter. The findings suggest that edible diatoms may induce subitaneous egg production, while low-food availability may induce diapause egg production.
SCIENTIFIC REPORTS
(2021)
Article
Ecology
Takashi Nakada, Toshiya Katano, Keigo Hashimoto, Maiko Kagami
Summary: The study on the abundance of phytoplankton species in Tokyo Bay showed that diatoms, particularly Chaetoceros spp., Skeletonema spp., and Thalassiosira spp., were the dominant taxa. The data can provide valuable insight into how anthropogenic disturbances like eutrophication and global warming affect the density and community composition of phytoplankton.
ECOLOGICAL RESEARCH
(2021)
Article
Fisheries
Tito Aria Nugraha, Alim Isnansetyo, Triyanto, Mukhlisna Djalil
Summary: The study demonstrated that using fermented earthworms as a feed additive had a positive impact on the non-specific immune response of walking catfish, significantly increasing respiratory burst activity, hematocrit, phagocytic activity, phagocytic index, superoxide dismutase, and leucocyte differentiation.
AQUACULTURE INTERNATIONAL
(2022)
Article
Fisheries
Desy Putri Handayani, Alim Isnansetyo, Indah Istiqomah, Jumina Jumina
Summary: Pseudoalteromonas xiamenensis STKMTI.2 was isolated from mangrove sediments in Setokok Island, Indonesia. The bacterium showed antagonistic properties against Vibrio spp., with active compounds extracted and tested for antibacterial activities. The study provides a new report on the anti-Vibrio activity of P. xiamenensis STKMTI.2, suggesting potential as novel antibiotics.
AQUACULTURE RESEARCH
(2022)
Article
Limnology
Ko Hosoda, Takahiro Murata, Akihito Mochizuki, Toshiya Katano, Yuji Tanaka, Tetsuro Mimura, Osamu Mitamura, Shin-ichi Nakano, Yuko Sugiyama, Yasuhiro Satoh, Yasunori Watanabe, Ayuriin Dulmaa, Chananbaatar Ayushsuren, Darmaa Ganchimeg, Valentin V. Drucker, Vladimir A. Fialkov, Masahito Sugiyama
Summary: The objective of this study is to clarify the biogeochemical characteristics of the Hovsgol-Ustilimsk water system in Mongolia and Russia. The results showed that the water quality in different areas of the system was influenced by factors such as river confluences, dilution from tributaries, and the transition from a riverine zone to a lacustrine zone. However, the basic water type throughout the system remained Ca-HCO3.
Article
Biotechnology & Applied Microbiology
Desy Putri Handayani, Alim Isnansetyo, Indah Istiqomah, Jumina Jumina
Summary: Pseudoalteromonas xiamenensis STKMTI.2 is a marine bacterium isolated from mangrove soil sediment in Batam, Indonesia, with a genome containing gene clusters responsible for the synthesis of industrially important bioactive and antibacterial compounds.
MARINE BIOTECHNOLOGY
(2022)
Article
Oceanography
Joji Ishizaka, Mengmeng Yang, Naoki Fujii, Toshiya Katano, Masahiro Hori, Takayuki Mine, Katsuya Saitoh, Hiroshi Murakami
Summary: A station of AERONET-OC has been set up for the verification of SGLI data. The study found that SGLI Version 1 data underestimated the shortwave reflectance, but Version 2 improved the estimation by correcting the reflectance values. The water constituents of SGLI were also examined and improved from Version 1 to Version 2. Regression algorithms were tested and more sophisticated algorithms may be needed. The study compared the time series of water constituents derived from AERONET-OC and SGLI data with river discharge and spring-neap tidal cycles.
JOURNAL OF OCEANOGRAPHY
(2022)
Article
Food Science & Technology
Amir Husni, Nuzulia Izmi, Fatimah Zahra Ayunani, Aprilia Kartini, Naila Husnayain, Alim Isnansetyo, Swarup Roy
Summary: This study examined the impact of different extraction methods on the characteristics and antioxidant activity of fucoidan from Sargassum hystrix. It was found that fucoidan extracted using method C showed the highest antioxidant activity, which was influenced by sulfate levels.
INTERNATIONAL JOURNAL OF FOOD SCIENCE
(2022)
Editorial Material
Oceanography
Jota Kanda, Toshiya Katano, Naho Horimoto-Miyazaki, Chiho Sukigara, Jiro Yoshida
JOURNAL OF OCEANOGRAPHY
(2023)
Article
Oceanography
Yo Ueno, Mai Takano, Toshiya Katano, Kenji Yoshino, Naho Miyazaki-Horimoto, Saori Yasui-Tamura, Chiho Sukigara, Issei Hamana, Fuminori Hashihama, Jota Kanda, Takashi Ishimaru
Summary: The composition of phytoplankton community in Tokyo Bay was studied from 2003 to 2017. Three diatom genera dominated and accounted for 75% of the total phytoplankton cell density. The community composition showed seasonal changes and could be grouped into three seasons. The abundance of Pseudo-nitzschia increased significantly in the late stratified season at 0 m depth, while Skeletonema abundance decreased at 5 m depth in the same season. The succession of the phytoplankton community was more evident when analyzing the yearly trend for each season.
JOURNAL OF OCEANOGRAPHY
(2023)
Article
Agriculture, Dairy & Animal Science
Dini Siswani Mulia, Rarastoeti Pratiwi, Widya Asmara, Mohamad Azzam-Sayuti, Ina Salwany Md. Yasin, Alim Isnansetyo
Summary: This study characterized the species and virulence gene diversity of Aeromonas spp. isolated from diseased catfish. The presence of multiple virulence genes in these Aeromonas strains poses a significant threat to the freshwater aquaculture industry.
Article
Food Science & Technology
Toto Sudargo, Bianda Aulia, Atika Anif Prameswari, Alim Isnansetyo, Indun Dewi Puspita, Siti Ari Budiyanti, Rahadyana Muslichah, Tira Aristasari, Sheila Rosmala Putri, Khusnul Alfionita
Summary: This study developed a potential supplementary food called Chaguro, made of chayote and tuna fish, to help lower blood glucose and improve lipid profile in diabetes and dyslipidemia. The administration of Chaguro formulas improved blood markers and prevented weight loss in diabetic rats, showing promising effects in diabetes and dyslipidemia management.
CURRENT RESEARCH IN NUTRITION AND FOOD SCIENCE
(2021)
Proceedings Paper
Fisheries
Bambang Triyatmo, Rustadi, Alim Isnansetyo
3RD INTERNATIONAL SYMPOSIUM ON MARINE AND FISHERIES RESEARCH (3RD ISMFR)
(2020)