Article
Environmental Sciences
Tianyu Zhang, Xin Wang, Yi Qu, Xiaoli Zhang, Qianqian Zhang, Dinglong Yang, Qing Wang, Zhijun Dong, Jianmin Zhao
Summary: Ocean acidification (OA) and antibiotic pollution can cause significant disruptions to the intestinal microbiota of the herbivorous gastropod Trochus niloticus, a keystone species in coral reef ecosystems. OA exposure leads to dysbiosis in the intestinal microbiota, while environmentally relevant concentrations of sulfamethoxazole (SMX) have minimal impact. However, higher concentrations of SMX induce an increase in the copies of sulfonamide resistance genes in the intestinal microbiota. These findings highlight the potential adverse effects of OA and antibiotic pollution on the intestinal health and fitness of T. niloticus.
Review
Environmental Sciences
Hannah L. Green, Helen S. Findlay, Jamie D. Shutler, Peter E. Land, Richard G. J. Bellerby
Summary: The paper discusses the increased economic importance of Arctic Ocean fish stocks under future climate scenarios, highlighting the vulnerability of the Arctic Ocean to ocean acidification and the need to consider it with other stressors to accurately predict fish stock movement towards the Arctic. The roadmap proposed entails improving knowledge through satellite observations, informing experimental studies, regional assessments of vulnerabilities, and implementing appropriate management strategies to address the impact of ocean acidification on Arctic fish stocks.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Environmental Sciences
Zhan Ban, Xiangang Hu, Jinghong Li
Summary: The authors utilize machine learning models to identify multifactor tipping points of global marine phytoplankton. The study reveals that temperature and carbon dioxide are the key risks, and predicts that the tipping points of production and resistance in tropical areas will be crossed by 2100.
NATURE CLIMATE CHANGE
(2022)
Article
Remote Sensing
Hua Su, An Wang, Tianyi Zhang, Tian Qin, Xiaoping Du, Xiao-Hai Yan
Summary: This study proposed machine learning algorithms (CNN and LightGBM) to reconstruct subsurface ocean temperature with higher resolution and evaluated prediction accuracy through various models and metrics. Results showed that LightGBM performed better with small training samples, while CNN outperformed with big training samples.
INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION
(2021)
Review
Environmental Sciences
Sam Purkis, Ved Chirayath
Summary: This article discusses the wide range of remote sensing technologies currently applied in oceans, highlighting next-generation technologies that may revolutionize the field, while also pointing out significant challenges in ocean remote sensing. Despite oceans comprising over 90% of the habitable volume of Earth, their imaging resolution is far below that of the moon and Mars. At this crucial historical moment, our understanding of rapidly changing marine ecosystems is still limited by technological maturity and challenges.
ANNUAL REVIEW OF ENVIRONMENT AND RESOURCES
(2022)
Article
Geochemistry & Geophysics
Huizeng Liu, Qingquan Li, Ping Zhu, Zhongwen Hu, Chao Yang, Yongquan Wang, Aihong Cui, Zuomin Wang, Guofeng Wu
Summary: This study investigates the potential application of Moon-based Earth observation (MEO) for monitoring the marine environment, particularly focusing on ocean color remote sensing. The results show that MEO-based remote sensing offers high spatial and temporal coverage, but there are limitations in high-latitude regions. Atmospheric and surface reflections affect sensor measurements, and further research is needed to improve accuracy. Overall, MEO-based ocean color remote sensing demonstrates great potential as a new perspective and long-term data source for marine environment monitoring.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2022)
Article
Environmental Sciences
Silke Lischka, Michael J. J. Greenacre, Ulf Riebesell, Martin Graeve
Summary: Ocean warming and acidification pose a severe threat to pteropods in the Arctic by reducing their survival and causing the dissolution of their shells. Lipids, especially phospholipids, play a crucial role in the early-stage pteropods. Our experimental study shows that elevated temperatures and high CO2 concentrations lead to a significant decrease in total lipids, mainly due to the reduction of phospholipids. This reduction may compromise cell differentiation and energy balance in the early-stage larvae. The negative effects of warming on lipid metabolism may be a more immediate threat to pteropods than shell dissolution effects caused by acidification.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Oceanography
Barbara Barcelo-Llull, Kyla Drushka, Peter Gaube
Summary: As observations and models improve, it is revealed that small-scale ocean variability is crucial for ocean circulation, air-sea interaction, and biogeochemistry. Although current satellite observations are limited, reconstructions of small-scale sea surface salinity (SSS) in the Northwest Atlantic Ocean show significant improvements in capturing variability, particularly in the continental shelf to the Gulf Stream region. However, variations in the Sargasso Sea remain higher than observed in situ, with enhanced small-scale salinity variability concentrated in specific bands aligned with geographic features.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Environmental Sciences
Ali Mokhtari, Morteza Sadeghi, Yasamin Afrasiabian, Kang Yu
Summary: Satellite remote sensing technology is a promising means for monitoring crop water status and requirements in near real-time. However, thermal information is often required for estimating actual evapotranspiration (ETa), which is not available on every satellite. To address this limitation, a satellite-based ETa estimation model called OPTRAM-ET is proposed, which utilizes optical trapezoid model estimates of soil moisture and a vegetation index (VI). The model showed promising performance across different landcover types and had comparable performance to the conventional land surface temperature (LST)-VI model. Furthermore, OPTRAM-ET benefits from higher spatial and temporal resolution data provided by optical sensors, making it less computationally demanding than LST-VI model.
REMOTE SENSING OF ENVIRONMENT
(2023)
Article
Geochemistry & Geophysics
Elena Savidge, Tasha Snow, Matthew R. Siegfried, Yixi Zheng, Ana B. Villas Boas, Guilherme A. Bortolotto, Lars Boehme, Karen E. Alley
Summary: Antarctica's ice shelves are crucial for regulating ice loss by supporting upstream glaciers. Persistent polynyas at the edge of these ice shelves, maintained by winds and/or ocean heat, have strong interactions between ice, ocean, and atmosphere. However, due to logistical constraints, direct observations of polynyas are limited. This study used temperature and salinity data from seal-borne instruments, along with thermal imagery, to investigate the variability of polynyas near Pine Island Glacier. The findings suggest that MODIS-derived surface thermal anomalies can be used to monitor polynya presence, and higher-resolution thermal imagery provides more detailed insights into subice-shelf processes.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2023)
Article
Multidisciplinary Sciences
Elliot Scanes, Laura M. Parker, Justin R. Seymour, Nachshon Siboni, Michael C. Dove, Wayne A. O'Connor, Pauline M. Ross
Summary: The study found a significant negative relationship between the metabolic rate and bacterial richness in oysters, with the bacterial community composition being influenced by metabolic rate, extracellular CO2, and extracellular pH. The effects of extracellular CO2 depended on genotype, and changes in metabolic rate aligned with a shift in ASVs abundance, indicating a clear relationship between host metabolism and the microbiome in oysters.
SCIENTIFIC REPORTS
(2021)
Article
Engineering, Environmental
Min-Sub Kim, Young Hwan Lee, Yoseop Lee, Eunjin Byeon, Duck-Hyun Kim, Minghua Wang, Atsushi Hagiwara, Manuel Aranda, Rudolf Shiu Sun Wu, Heum Gi Park, Jae-Seong Lee
Summary: The susceptibility of filter-feeding rotifers to high CO2 conditions and nanoplastic exposure depends on their adaptation history. Rotifers with different adaptation histories showed differences in ingestion and accumulation of nanoplastics, which may be related to microRNA-mediated epigenetic regulation.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Environmental Sciences
Ana Gabriela Bonelli, Hubert Loisel, Daniel S. F. Jorge, Antoine Mangin, Odile Fanton d'Andon, Vincent Vantrepotte
Summary: This study presents a new approach for estimating dissolved organic carbon (DOC) over the open ocean using an artificial neural network algorithm. By considering various factors such as optical water classes, sea surface temperature, mixed layer depth, absorption coefficient of dissolved organic matter, and chlorophyll-a concentration, the model successfully estimates DOC from satellite data and shows good agreement with in situ measurements. Additionally, the study provides insight into the contribution of particulate organic carbon (POC) to total organic carbon (TOC) over the global ocean.
REMOTE SENSING OF ENVIRONMENT
(2022)
Review
Environmental Sciences
Meisam Amani, Armin Moghimi, S. Mohammad Mirmazloumi, Babak Ranjgar, Arsalan Ghorbanian, Saeid Ojaghi, Hamid Ebrahimy, Amin Naboureh, Mohsen Eslami Nazari, Sahel Mahdavi, Sayyed Hamed Alizadeh Moghaddam, Reza Mohammadi Asiyabi, Seyed Ali Ahmadi, Soroosh Mehravar, Farzane Mohseni, Shuanggen Jin
Summary: This study comprehensively reviews and discusses 15 applications of remote sensing techniques in the ocean, covering various types of remote sensing systems. It is divided into two parts, providing detailed information and case studies.
Article
Environmental Sciences
Tianyu Zhang, Yi Qu, Qianqian Zhang, Jia Tang, Ruiwen Cao, Zhijun Dong, Qing Wang, Jianmin Zhao
Summary: This study evaluated the effects of ocean acidification and warming on the herbivorous gastropod Trochus niloticus, showing that both factors can lead to physiological disturbances, impaired immune functions, oxidative balance, neurotoxicity, and disorder of energy metabolism. Integrated biomarker response confirmed that the overall fitness of T. niloticus was deleteriously impacted and more stressed under the co-exposure condition, indicating potential long-term impairments to the viability of T. niloticus in the future ocean, leading to degradation of coral reef ecosystems.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
