Article
Geography, Physical
Ian D. L. Foster, John Boardman, Jennine L. Evans, Ruth Copeland-Phillips, Atish N. Vadher, Seeseana Wright, Adrian L. Collins, Christopher Manning
Summary: Farm ponds, reservoirs, and in-stream weirs are common in the lowland river catchments of the UK, and have significant impacts on longitudinal connectivity and sediment transport pathways. Research shows that these structures trap and release sediment in a particle size-specific manner, with finer sediments being depleted in stored sediment while coarser sands are retained.
EARTH SURFACE PROCESSES AND LANDFORMS
(2022)
Article
Multidisciplinary Sciences
Alexander T. Michalek, Gabriele Villarini, Admin Husic
Summary: Structural connectivity, which describes how landscapes facilitate the transfer of matter, is primarily controlled by tectonics, with climate playing a secondary role. However, climate change could alter global connectivity and have implications for human and environmental health.
NATURE COMMUNICATIONS
(2023)
Article
Environmental Sciences
Ewa Szarek-Gwiazda, Dariusz Ciszewski, Andrzej Kownacki
Summary: The effects of channelization on macroinvertebrate communities in mountain rivers have not been well recognized. This study compared two north Carpathian mountain rivers, one channelized with concrete sills and the other with block ramps. The channel modifications altered the river gradient and flow velocity, leading to changes in habitat conditions and dominance of different macroinvertebrate communities.
Article
Water Resources
Lillian M. McGill, J. Renee Brooks, E. Ashley Steel
Summary: Understanding the impact of climate change on river flow in mountainous river basins in the Pacific Northwest is crucial. By measuring the spatial and temporal dynamics of water sources, it is suggested that the baseflow of the Snoqualmie River may be relatively resilient to predicted warming and changes in snowpack.
HYDROLOGICAL PROCESSES
(2021)
Article
Geography, Physical
Lorenzo Martini, Marco Cavalli, Lorenzo Picco
Summary: This study aimed to validate the index of connectivity (IC) as a tool for depicting structural connectivity and predicting sediment dynamics linking sediment sources to the channel network. The results showed that only 15% of sediment sources are connected to the stream network.
EARTH SURFACE PROCESSES AND LANDFORMS
(2022)
Article
Environmental Sciences
Nicholas A. Sutfin, Ellen Wohl, Timothy Fegel, Natalie Day, Laurel Lynch
Summary: The morphology of rivers plays a significant role in the carbon dynamics of mountain streams, with higher organic carbon storage per area in unrestricted valleys and decreased storage in multi-thread channel reaches due to increased microbial transformation of organic matter. Persistent channel-spanning logjams may limit the aggradation of floodplain fine sediment.
WATER RESOURCES RESEARCH
(2021)
Article
Environmental Sciences
Milos Miler, Spela Bavec, Mateja Gosar
Summary: Mining waste deposits (MWDs) are significant and constant sources of pollution for the environment worldwide. This study investigates the long-term environmental impacts of MWDs in Pb-Zn mining districts in Slovenia and assesses the stability of potentially harmful element (PHE)-bearing phases in stream water. The results show that MWDs are important sources of PHEs in stream sediments, with PHEs mainly occurring as fine-grained and liberated ore minerals. The study also suggests a possible solution for reducing the environmental impact of MWDs through the recovery of metals from fine grain size fractions.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Jack Kurki-Fox, Barbara A. Doll, Bonnie Monteleone, Kayla West, Gloria Putnam, Liam Kelleher, Stefan Krause, Uwe Schneidewind
Summary: While the presence of microplastics (MP) in aquatic ecosystems worldwide is known, there is still a lack of understanding regarding the factors and controls influencing their occurrence and distribution. This study examined MP concentrations in water and streambed sediment at various locations in the Neuse River Basin in North Carolina, USA. MP particles with a diameter greater than 335 µm were found in all water samples, with concentrations ranging from 0.02 to 221 particles per cubic meter. Urban streams had the highest concentrations, and a significant correlation between streamflow and MP concentration was observed in urbanized areas. The most common polymer types identified for MPs larger than 335 µm were polyethylene, polypropylene, and polystyrene. When smaller mesh sizes (>64 µm) were used for analysis, a higher concentration of MP particles, with the most common polymer type being polyethylene terephthalate, was observed. The ratio of MP concentrations between the two mesh sizes ranged from 35 to 375, indicating an underestimation of MPs by the larger mesh. MPs were also detected in 14 out of 15 sediment samples. The findings of this study provide valuable insights into the spatial distribution and transport of MPs in river basins, as well as the influences of land cover, hydrology, and sampling methods on MP concentrations.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Green & Sustainable Science & Technology
Katherine del Carmen Camacho-Zorogastua, Julio Cesar Minga, Jhon Walter Gomez-Lora, Victor Hugo Gallo-Ramos, Victor Garces Diaz
Summary: This study used RUSLE and GIS techniques to estimate soil loss rates and sediment rates caused by rainfall. Remote sensing and soil property information were also used for erosion analysis. The results showed severe soil erosion, with the highest erosion rate in steep areas. A large portion of the basin experienced moderate to high soil loss, with certain catchments prioritized for soil conservation efforts. Sediment deposition was found along the flow direction of the mainstream, with the highest rates in specific regions. The central part of the basin was identified as the most vulnerable to increased erosion rates, indicating progressive sediment deposition.
Article
Environmental Sciences
Marco Tangi, Simone Bizzi, Kirstie Fryirs, Andrea Castelletti
Summary: This study presents the basin-scale, dynamic sediment connectivity model D-CASCADE, which successfully reproduces the major phases of sediment transport and associated channel adjustments over the last two centuries. The model is also tested for estimating future trajectories of basin-scale sediment transport and sediment budgets at the river reach scale.
WATER RESOURCES RESEARCH
(2022)
Article
Environmental Sciences
Raul Lopez, Fanny Ville, Celso Garcia, Ramon J. Batalla, Damia Vericat
Summary: Hydropeaking, a method of artificially generating flow peaks, has a significant impact on the hydro-sedimentary dynamics of rivers. This study investigates the effect of hydropeaking on sediment particle motion in a gravel-to-cobble bed river in the Pyrenees. The results show that the maximum flow discharged by the hydropower plant primarily affects the downstream section of the river, entraining finer particles. Differences in sediment supply, bed slope, and surface layer structure control the variability of particle motion between sections. Additionally, hydropeaking leads to partial transport, selectively removing sand and small gravel downstream and increasing armoring.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Civil
Chi Nguyen, Edoardo Daly, Valentijn R. N. Pauwels
Summary: Surface water connectivity between rivers and floodplain lakes is crucial for maintaining biodiversity and ecological functioning in floodplain wetlands. A novel dynamic connectivity metric introduced in this study provides a comprehensive observation on hydrological connectivity in floodplain wetlands. The method was applied to the Northern Lakes of the Narran River catchment in New South Wales, Australia, revealing differences in connectivity between different stages of flood events.
JOURNAL OF HYDROLOGY
(2021)
Article
Multidisciplinary Sciences
Danelle Agnew, Kirstie Fryirs
Summary: By connecting corridors of river recovery, resilience can be built into river systems to mitigate against future floods and droughts. However, there is a lack of methods to identify where these corridors can be built in river management practice. The Open Access NSW River Styles database provides comprehensive information on geomorphic river condition and recovery potential, which can be used to analyze potential locations for river recovery corridors. The study found significant spatial variability in the types and lengths of connections made across different catchments. These findings provide important guidance for river conservation and rehabilitation activities in practice.
Article
Geosciences, Multidisciplinary
A. S. Leenman, L. J. Slater, S. J. Dadson, M. Wortmann, R. Boothroyd
Summary: Geomorphologists have been debating the importance of disturbance magnitude, duration, and frequency in shaping landscapes. For flood-induced river-channel adjustment, some argue that the cumulative hydrograph is the most important factor. However, previous studies relied on small data sets. This study combines satellite imagery and flow data to address this question using a larger data set, finding that erosion during floods is best explained by their duration and cumulative hydrograph.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Geosciences, Multidisciplinary
A. S. Leenman, L. J. Slater, S. J. Dadson, M. Wortmann, R. Boothroyd
Summary: Geomorphologists have debated the importance of disturbance magnitude, duration, and frequency in shaping landscapes. This study combines imagery and flow data to investigate the question using a larger data set. Erosion during floods is best explained by duration and cumulative hydrograph.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Geography, Physical
H. F. Malenda, N. A. Sutfin, G. Guryan, S. Stauffer, J. C. Rowland, K. H. Williams, K. Singha
EARTH SURFACE PROCESSES AND LANDFORMS
(2019)
Article
Geography, Physical
Ellen Wohl, Katherine B. Lininger, Sara L. Rathburn, Nicholas A. Sutfin
EARTH SURFACE PROCESSES AND LANDFORMS
(2020)
Article
Geography, Physical
Bridget Livers, Katherine B. Lininger, Natalie Kramer, Alicia Sendrowski
EARTH SURFACE PROCESSES AND LANDFORMS
(2020)
Article
Environmental Sciences
Jose A. Ortega-Becerril, Bridget Livers, Ellen Wohl
JOURNAL OF MOUNTAIN SCIENCE
(2020)
Article
Environmental Sciences
Nicholas A. Sutfin, Ellen Wohl, Timothy Fegel, Natalie Day, Laurel Lynch
Summary: The morphology of rivers plays a significant role in the carbon dynamics of mountain streams, with higher organic carbon storage per area in unrestricted valleys and decreased storage in multi-thread channel reaches due to increased microbial transformation of organic matter. Persistent channel-spanning logjams may limit the aggradation of floodplain fine sediment.
WATER RESOURCES RESEARCH
(2021)
Editorial Material
Geography, Physical
Katherine B. Lininger, Ann V. Rowan, Bridget Livers, Natalie Kramer, Virginia Ruiz-Villanueva, Alicia Sendrowski, Sallie Burrough
Summary: Many geomorphologists who are mothers struggle to balance field research with pregnancy and childcare responsibilities. This paper offers perspectives on the challenges they face and possible solutions, advocating for support from the community to enhance diversity within the discipline.
EARTH SURFACE PROCESSES AND LANDFORMS
(2021)
Article
Geosciences, Multidisciplinary
Bridget Livers, Ellen Wohl
Summary: This study reveals that logjams spanning the entire channel width are more effective in storing water, sediment, and organic matter than non-spanning logjams. They contain more wood pieces, larger pieces, greater height and volume, and store more water and organic matter.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2021)
Article
Multidisciplinary Sciences
Stephen M. Chignell, Madeline E. Myers, Adrian Howkins, Andrew G. Fountain
Summary: This study explores the relationship between field camp placement and scientific production in the McMurdo Dry Valleys of East Antarctica through integrating bibliometrics, geospatial analysis, and historical research. The findings show that research sites have become more concentrated and closer to field camps over time, however, scientific output does not necessarily correspond to the number of field camps, and establishing a field camp may not always result in an increase in research in the local area.
Article
Ecology
Stephen M. Chignell, Adrian Howkins, Poppie Gullett, Andrew G. Fountain
Summary: Co-authorship networks in Antarctica provide valuable insights into scientific knowledge production and international interdisciplinary collaboration. By using bibliometrics and social network analysis, the study traces the history of environmental science in McMurdo Dry Valleys and reveals a shift from geosciences to biosciences. The study also finds an increase in collaboration among individuals and academic disciplines, with the most productive scientists being the most interdisciplinary.
Article
Geography
Stephen M. Chignell
Summary: This article argues for the application of network analysis to critical physical geography (CPG) in order to gain new insights into knowledge politics, histories of scientific concepts, and ecosocial relations. By utilizing network techniques, CPG can benefit from integrating with a diverse range of research from social sciences, natural sciences, and humanities.
CANADIAN GEOGRAPHIES-GEOGRAPHIES CANADIENNES
(2023)
Article
Environmental Sciences
Kevin A. A. Hughes, Mercedes Santos, Jilda A. A. Caccavo, Stephen M. M. Chignell, Natasha B. B. Gardiner, Neil Gilbert, Adrian Howkins, Bettine Jansen Van Vuuren, Jasmine R. R. Lee, Daniela Liggett, Andrew Lowther, Heather Lynch, Antonio Quesada, Hyoung Chul Shin, Alvaro Soutullo, Aleks Terauds
Summary: Antarctic and Southern Ocean environments are under increasing pressure, thus the independent and objective advice from the Scientific Committee on Antarctic Research (SCAR) is crucial for decision-making, policy development, and effective environmental management. The recently approved SCAR Scientific Research Programme Ant-ICON aims to provide scientific support for the conservation and management of Antarctica, the Southern Ocean, and the sub-Antarctic through high-quality transdisciplinary research.
Editorial Material
Geography
Alana M. Rader, Christine Biermann, Stephen M. Chignell, Katherine R. Clifford, Lisa C. Kelley, Rebecca Lave
CANADIAN GEOGRAPHIES-GEOGRAPHIES CANADIENNES
(2023)
Correction
Ecology
Nicholas E. Young
Article
Geosciences, Multidisciplinary
Adrian Howkins, Stephen M. Chignell, Poppie Gullett, Andrew G. Fountain, Melissa Brett, Evelin Preciado
EARTH SYSTEM SCIENCE DATA
(2020)
Article
Geography
Stephen M. Chignell, Melinda J. Laituri, Nicholas E. Young, Paul H. Evangelista
ANNALS OF THE AMERICAN ASSOCIATION OF GEOGRAPHERS
(2019)
Article
Geography, Physical
A. Securo, C. Del Gobbo, L. Rettig, S. Pillon, A. De Luca, D. Fontana, E. Benedetti Fasil, R. R. Colucci
Summary: Small glaciers in temperate mountain regions have experienced significant reduction and unprecedented melt rates in recent years. Some glaciers have transitioned from clean ice to debris-covered or even rock glaciers. This study examines the surface elevation change of the Popera Alto glacier in the Sesto Dolomites using LiDAR and Structure from Motion surveys, and analyzes its evolution in terms of surface cover and geomorphic processes. The glacier has lost an average of 0.35 m water equivalent per year over the past 16 years, with active modification of its surface cover by geomorphic processes. The role of debris and local topography feedback has allowed the resilience of the glacier, leading to a marked difference between the current environmental equilibrium line altitude (envELA) and the effective ELA (effELA) of the glacier.
Article
Geography, Physical
Zhenzhen Yan, Yaolin Shi, Lili Kang, Xiangtao Fan
Summary: This study proposes a quantitative regional deformation model based on global positioning system (GPS) data to quantitatively analyze the morphological evolution of rivers in the Three Rivers Region. It finds that tectonic deformation phases significantly control regional landscape development and drainage features.
Article
Geography, Physical
Said Mukhtar Ahmad, Nitheshnirmal Sadhasivam, Mona Lisa, Luigi Lombardo, Mustafa Kemal Emil, Amira Zaki, Cees J. Van Westen, Islam Fadel, Hakan Tanyas
Summary: In this study, we investigated a large slow-moving landslide in Northern Pakistan, using Interferometric Synthetic Aperture Radar (InSAR) analysis. Our results showed that the crown of the landslide is moving faster than the surrounding regions, while the footslope experienced high deformations. We discussed the possible roles of meteorologic and anthropogenic factors in causing these deformations.
Article
Geography, Physical
Shuang Bian, Xibin Tan, Yiduo Liu, Suoya Fan, Junfeng Gong, Chao Zhou, Feng Shi, Michael A. Murphy
Summary: The Yarlung River's drainage divide is primarily moving north due to variations in precipitation across the Himalayas. The Gangdese drainage divide shows predominantly northward and southward migration, controlled by base-level rise and downstream influences. The presence of north-trending rifts separates the drainage divides into five zones, each with a distinct migration pattern.
Article
Geography, Physical
Joon-Young Park, Seok Yoon, Deuk-Hwan Lee, Seung-Rae Lee, Hwan-Hui Lim
Summary: This study developed a multiple-regression model to estimate site-specific average growth rates of debris flow events. The proposed model was validated through a case study and showed reasonable predictions of debris flow velocities and heights.
Article
Geography, Physical
Nicholas Reilly Mccarroll, Arnaud Temme
Summary: New geochronological data from hillslope boulder armor in the Flint Hills reveal the rates and timing of lateral retreat in the landscape. Surfaces of limestone boulders dating back to the Pleistocene era were found, and the ages of the hillslope armor increased with distance from the limestone bench. The estimated rate of lateral retreat in this landscape is 0.02 mm/yr.
Article
Geography, Physical
Xinbo Yao, Yuntao Tian
Summary: By studying the Longmenshan-Minshan drainage divide, we found that it has reached a dynamic steady state, indicating a balance between erosion and rock uplift. This study also reveals the process of formation and evolution of the divide and raises questions about the effectiveness of divide migration metrics.
Article
Geography, Physical
Junhui Yu, Pin Yan, Yanlin Wang, Guangjian Zhong, Changliang Chen
Summary: The seafloor mounds in the Chaoshan Depression of the South China Sea are identified as mud volcanoes, with fluids coming from underlying mud-fluid diapirs. The hydrocarbon gases feeding the mud volcanoes and diapirs are reasoned to originate from deep Mesozoic source rocks, indicating significant Mesozoic hydrocarbon potential in the Chaoshan Depression.
Article
Geography, Physical
Marius Huber, Luc Scholtes, Jerome Lave
Summary: This paper investigates the relationships between hillslope stability and fabric anisotropy of brittle rock materials and the implications for landscape shaping. It explores the different stability modes and movement characteristics of anisotropic materials, and demonstrates the significant control of material anisotropy on landscape shaping.
Article
Geography, Physical
Shubhra Sharma, Anil D. Shukla
Summary: The study investigates the relationship between glacial dynamics and lake sedimentation during the mid-Holocene climate variability in the Southern Zanskar ranges. It utilizes geomorphological disposition, elemental geochemistry, and optical chronology of relict lake sediment to reconstruct the pattern of minor glacier responses to climate variability. The results indicate six centennial to millennial-scale climatic phases, with warmer phases represented by decreased mineralogical fine grain flux and increased coarse grain flux. The study highlights the potential of relict lake sediment and para/peri-glacial landforms in understanding glacial dynamics and climate change during the Holocene.
Article
Geography, Physical
Jean-Francois Bernier, Sydney W. Meury, Patrick Lajeunesse
Summary: In this study, an approach combining various data and observation methods was proposed to improve the monitoring of landfast ice dynamics and its geomorphic impact on sedimentary systems. The results demonstrate the ability of the approach to accurately measure interannual variations in landfast ice and constrain geomorphic changes. Additionally, the study found a strong relationship between the severity of freezing seasons and the response of landfast ice to hydrometeorological events, with different geomorphic responses observed under different winter conditions.
Article
Geography, Physical
Heping Shu, Fanyu Zhang
Summary: This study investigates the relationship between susceptibility of soil-water hazards and human activities, geoheritage sites in the Loess Plateau, China. Landslide and gully erosion susceptibility were obtained using gradient boosting and support vector machines, and a hazard matrix was formed to couple landslide and gully erosion susceptibility. The study found different trends in the magnification times of soil-water hazards chain under different scenarios.
Article
Geography, Physical
Guangqiang Qian, Zhuanling Yang, Xuegang Xing, Zhibao Dong, Youyuan Guo
Summary: Granule ripples are aeolian landforms armored against erosion by coarse grains. This study investigates their seasonal morphological evolution and migration in the Sanlongsha Dune Field. The findings show that wind events, especially those exceeding the threshold velocities of coarse grains, significantly influence the morphodynamics of granule ripples. The study highlights the importance of considering the reptation and saltation of coarse grains in future research on granule ripples.
