Article
Geography, Physical
Sunando Bandyopadhyay, Nabendu Sekhar Kar, Susmita Dasgupta, Dipanwita Mukherjee, Abhijit Das
Summary: Delta shapes are influenced by wave, tidal, and fluvial processes, and their coastline changes depend on distributary channel activities. The Sundarban Mangrove Wetlands in India and Bangladesh are located in the fluvially abandoned western part of the Ganga-Brahmaputra-Meghna Delta. Through the comparison of maps and images from different periods, it was found that erosion occurred in the southern islands, while land gain was observed in the western sector. Overall, the area of the islands decreased over time, with a reduction rate of -4.46 km(2)/yr.
Article
Geosciences, Multidisciplinary
P. P. Mohapatra, A. Stephen, P. Singh, S. Prasad, K. Anupama
Summary: This study focuses on palynological and sedimentary records in southeastern India over the past 11040 years, with a particular emphasis on pollen data analysis from the Porayar sediment core. The research reveals transitions from lower to more stable sea levels, and infers regional vegetation changes that provide clues for climate interpretation.
Article
Environmental Sciences
Sourav Samanta, Sugata Hazra, Jon R. French, Robert J. Nicholls, Partho P. Mondal
Summary: In this paper, we conduct simulations to explore the potential evolution of the Indian Sundarbans mangroves under various scenarios of sea-level rise and consider the impacts of inundation and shoreline erosion. The results show significant mangrove decline in all cases, with greater losses as sea level rises. It is estimated that by the end of the century, the Indian Sundarbans mangroves could lose between 42% and 80% of their current area if current management practices continue.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Geosciences, Multidisciplinary
Chetan Sharma, Anoop Kumar Shukla, Yongqiang Zhang
Summary: The study investigated seasonal precipitation changes in the GBM river basin, revealing a significant decrease in monsoon precipitation after 1980, alongside a slight increase in pre-monsoon precipitation. Attribution analysis indicated a significant contribution of anthropogenic activities, mainly greenhouse gas emissions, to the changes in annual monsoon precipitation.
GEOSCIENCE FRONTIERS
(2021)
Article
Chemistry, Multidisciplinary
Eun Je Jeong, Daekyo Cheong, Jin Cheul Kim, Hyoun Soo Lim, Seungwon Shin
Summary: This study traces the evolution of the Nakdong River delta in southeastern Korea using sediment cores, revealing significant changes in sea level and their impact on delta formation and development.
APPLIED SCIENCES-BASEL
(2022)
Article
Geography, Physical
Beatriz L. Figueiredo, Igor Charles C. Alves, Marcelo C. L. Cohen, Luiz C. R. Pessenda, Marlon Carlos Franca, Mariah Izar Francisquini, Adriana de Souza, Nicholas Culligan
Summary: The research found that mangroves existed in the mid-Holocene period in the river valley region of northeast Brazil, gradually replaced by herbaceous vegetation adapted to freshwater over the past 5800 years. At the same time, the Atlantic Forest expanded along the river valley, while herbaceous vegetation contracted on the coastal plateau.
Article
Environmental Sciences
An T. N. Dang, Michael Reid, Lalit Kumar
Summary: This study investigates the potential changes in mangrove distribution in response to future sea level rise scenarios in the Mekong Delta region. The results show significant impacts on mangrove ecosystems, with subsidence being a major driver.
REGIONAL ENVIRONMENTAL CHANGE
(2022)
Article
Environmental Sciences
Md. Munsur Rahman, Anisul Haque, Robert J. Nicholls, Stephen E. Darby, Mahmida Tul Urmi, Md. Maruf Dustegir, Frances E. Dunn, Anika Tahsin, Sadmina Razzaque, Kevin Horsburgh, Md. Aminul Haque
Summary: The research examines the sedimentation and sustainable development of the Ganges-Brahmaputra-Meghna (GBM) delta. The study finds that under quasi-natural conditions, sedimentation can exceed the current rates of relative sea-level rise and potentially create new land mass. Encouraging quasi-natural conditions through the widespread application of sediment management measures has the potential to promote more sustainable outcomes for the GBM delta.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Marcelo Cancela Lisboa Cohen, Adriana Vivan de Souza, Kam-Biu Liu, Erika Rodrigues, Qiang Yao, Luiz Carlos Ruiz Pessenda, Dilce Rossetti, Junghyung Ryu, Marianne Dietz
Summary: RSL rise, decreased fluvial sediment discharge, and increased hurricane activity have contributed to shoreline retreat in Port Fourchon, Louisiana, threatening coastal ecosystems. The study analyzed shoreline dynamics on mangroves and marshes before and after a beach nourishment project in 2013, showing that the project resulted in advancements in the beach barrier but also caused erosion and long-term shoreline retreat.
Article
Geosciences, Multidisciplinary
Till J. J. Hanebuth, Hermann R. Kudrass, Anja M. Zander, Humayun Syed Akhter, Gertrud Neumann-Denzau, Anwar Zahid
Summary: This study reconstructs the coastal subsidence over the past 1300 years in a mangrove region along the Ganges-Brahmaputra Delta coast, showing a faster rate of modern sea level rise that may be influenced by natural sediment accretion and human interference. Accelerated subsidence during specific periods and sudden sinking events highlight the potential major hazard for coastal Bangladesh.
Article
Geography, Physical
Fernando A. Borges da Silva, Marlon C. Franca, Marcelo C. L. Cohen, Luiz C. R. Pessenda, Francis E. Mayle, Neuza A. Fontes, Flavio L. Lorente, Antonio Alvaro Buso Junior, Marisa de C. Piccolo, Jose A. Bendassolli, Kita Macario, Nicholas Culligan
Summary: This study aims to understand the resilience of mangroves to changes in sea level during the late Holocene in southeastern Brazil. By analyzing palynological, sedimentological, and geochemical data, as well as radiocarbon dating, the study reveals the succession of mangrove species and their adaptability to habitat disturbances caused by sea level fluctuations. The results demonstrate that mangroves can withstand the effects of Atlantic sea-level changes.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Article
Geography, Physical
Junghyung Ryu, Kam-biu Liu, Terrence A. McCloskey
Summary: This study evaluates plant diversity and species richness levels and reconstructs the environmental history of a site near Little Lake in southeast Louisiana, USA over the past 3200 years. The study found that six successive ecosystems occurred as a result of changing environmental conditions, influenced by local, regional, and global factors. The study also found that biodiversity increased with increasing river dynamics and decreased with increasing salinity.
QUATERNARY SCIENCE REVIEWS
(2022)
Article
Marine & Freshwater Biology
Lucy M. Bricheno, Judith Wolf, Yujuan Sun
Summary: This study explores how sea-level rise and climate change may interact to control future river salinity in the Ganges-Brahmaputra-Meghna (GBM) delta. Model experiments indicate that future river salinity in the delta will be affected at seasonal and regional scales, with salt intrusion intensifying during the dry season. Sea-level rise in the future is expected to increase river salinity in the GBM delta.
ESTUARINE COASTAL AND SHELF SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
Shixiong Yang, Fang Gu, Bing Song, Siyuan Ye, Yongming Yuan, Lei He, Jie Li, Guangming Zhao, Xigui Ding, Shaofeng Pei, Edward A. Laws, Francesca Sangiorgi
Summary: This study conducted a high-resolution palynological analysis on a well-dated sediment core from the Liaohe Delta in northeast China to reconstruct the Holocene vegetation history. The results reveal that the vegetation changes in the region were influenced by climate warming, delta transgression, and regional sea-level oscillation.
Article
Geography, Physical
Liangtao Ye, Lei Gao, Yongfei Li, Guoqiang Wang
Summary: In this study, the authors investigated the vegetation history of the northern Yangtze deltaic coast and its response to climate and sea-level changes over the past 10.3 ka. It was found that the vegetation in this region was sensitive to global/regional climate change, sea-level oscillations, and human impacts. The study provides valuable insights into the environmental changes in the Yangtze Delta region.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)