Article
Environmental Sciences
Ophelie Fovet, Francois Meric, Alain Crave, Jean-Michel Cador, Anne-Julia Rollet
Summary: The Water Framework Directive aims to restore the ecological and/or sediment continuity of rivers. This study monitored sediment, water temperature, and nutrient concentrations in the Selune River and found that some downstream parameters have already converged towards upstream signals.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Review
Ecology
Stephanie M. Bilodeau, Craig A. Layman, Miles R. Silman
Summary: Species interactions generating consistent landscape or seascape patterns are important to ecosystem health and function. Sand halos in tropical reefscapes have been attributed to herbivory, but grazing alone cannot explain patterns at all locations. Combining nutrients and grazing, along with factors such as fish and invertebrate bioturbators, provides a more comprehensive understanding of the complex underlying causes of these patterns.
Article
Engineering, Environmental
Feilong Li, Fen Guo, Wei Gao, Yanpeng Cai, Yuan Zhang, Zhifeng Yang
Summary: This study investigates the interactive effects of dam construction and nutrient enrichment on river ecosystems using environmental DNA (eDNA) approach. The results reveal that dams and nutrients jointly shape the spatial patterns and community structures of aquatic communities, and additive, synergistic, and antagonistic interactions are commonly observed. Additionally, nutrients have a stronger impact on certain taxonomic groups, such as protozoa, fungi, and eukaryotic algae, while dams have a stronger effect on fish, aquatic insects, and bacteria.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Emma I. Santana, David H. Shull
Summary: This study measured the benthic fluxes of various substances between sediment and overlying water in the Salish Sea. The results showed that sediment oxidation of reduced compounds resulted in higher dissolved oxygen fluxes than dissolved inorganic carbon fluxes. Phosphorus storage in sediments was indicated by the close-to-zero phosphorus fluxes. Denitrification was present in most sites, with higher rates in areas with longer bottom water residence time.
ESTUARIES AND COASTS
(2023)
Article
Multidisciplinary Sciences
Kjell Gundersen, Jane S. Mogster, Vidar Lien, Elizaveta Ershova, Linda F. Lunde, Hilde Arnesen, Ann-Kristin Olsen
Summary: This dataset includes biogeochemical samples from the Norwegian, Greenland, and Iceland Seas, analyzed by the Plankton Chemistry Laboratory at IMR. The number of surveys and stations has varied greatly over the past 30 years. The dataset provides valuable information on dissolved inorganic nutrients, phytoplankton chlorophyll-a, and phaeopigments, contributing to global ocean research and climate change investigations.
Article
Engineering, Environmental
Pearse James Buchanan, Alessandro Tagliabue, Camille de la Vega, Claire Mahaffey
Summary: Stable isotopes of nitrogen (δ N-15) are used to study food web dynamics, but the isotopic gradient between the Pacific and Atlantic sectors of the Arctic Ocean is increasing. This increase is due to the growth in δ N-15 in the Pacific-influenced high Arctic and the decrease in the Atlantic sector. The trends may complicate food web studies but could aid movement studies as the Arctic isoscape becomes more regionally distinct.
Article
Environmental Sciences
Tomas Matys Grygar, Martin Famera, Michal Hosek, Jitka Elznicova, Jan Rohovec, Sarka Matouskova, Tomas Navratil
Summary: Willows act as plant pumps, translocating Cd and Zn from sediment bulk to top strata in floodplains. Senescing foliage of common plant species can increase Cd and Zn ratios in top strata, not related to sediment concentrations. Groundwater and plant foliage reflect shallow groundwater pH, mobilizing risk elements due to typical subsurface sediment acidity in floodplains.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Civil
Jose L. J. Ledesma, Guiomar Ruiz-Perez, Anna Lupon, Silvia Poblador, Martyn N. Futter, Francesc Sabater, Susana Bernal
Summary: This study investigated the potential impact of future climate changes on lateral water transfer and its relationship with surface water quality and carbon cycling. The findings suggest that changes in temperature and precipitation may lead to the downward movement of the lateral water transfer layer, resulting in reduced organic matter inputs and dissolved organic carbon concentrations in streams.
JOURNAL OF HYDROLOGY
(2021)
Article
Ecology
Matthew R. Dunkle, Ryan A. Dunbeck, Christopher C. Caudill
Summary: The presence of carcasses can increase the density of juvenile salmon and decrease emigration rates, but contrary to expectations, there were no differences in growth rates among treatments. The decomposition traits of lamprey and trout carcasses mediate consumer behavioral responses and the incorporation of carcass subsidies into food webs.
Article
Limnology
Toshimi Nakajima, Ryo Sugimoto, Takahiro Kusunoki, Katsuhide Yokoyama, Makoto Taniguchi
Summary: The study found that oceanic water is the main source of nutrients for coastal ecosystems along the Sanriku Bay, but land-derived nutrients can also accelerate coastal primary production during certain seasons.
LIMNOLOGY AND OCEANOGRAPHY
(2021)
Article
Biology
Zachariah G. Schonberger, Kevin McCann, Gabriel Gellner
Summary: Modular food web theory emphasizes the importance of consumptive interactions and weak energetic fluxes in stabilizing food webs. However, current understanding of food web theory within an ecosystem context is limited. Research shows that strong nutrient-plant interactions can stabilize nutrient-limited ecosystems, contrasting the idea that weak consumer-resource interactions are stabilizing.
COMMUNICATIONS BIOLOGY
(2021)
Article
Environmental Sciences
Darci A. Swenson Perger, Ian P. Dwyer, Robert C. Aller, Nils Volkenborn, Christina Heilbrun, Laura M. Wehrmann
Summary: This study found high benthic dissolved iron (Fed) fluxes from sandy sediments, especially when bioirrigation was simulated. Despite low concentrations of labile organic matter and porewater Fed, large fluxes were sustained due to upward advective transport of dissolved porewater constituents. This highlights the importance of permeable sediments in global estimates of benthic Fed fluxes.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
Stephen Plont, Durelle T. Scott, Erin R. Hotchkiss
Summary: Stream confluences play a significant role in connecting previously independent landscapes in freshwater networks. However, the influence of confluences on the transport, mixing, and fate of organic matter (OM) and inorganic nutrients at the scale of river networks has been poorly studied. To understand this influence, the researchers conducted sampling campaigns at five confluences and found that dissolved OM and nutrients mixed non-conservatively downstream of the confluences. The geomorphic variability, water residence time, and microbial respiration differed between reaches upstream and downstream of the confluences, suggesting that biogeochemical processes within the confluence mixing zone drive the non-conservative mixing downstream. This study highlights the importance of considering the unique functional role of confluences in water resource management.
WATER RESOURCES RESEARCH
(2023)
Article
Multidisciplinary Sciences
Adnan Rajib, Qianjin Zheng, Charles R. Lane, Heather E. Golden, Jay R. Christensen, Itohaosa I. Isibor, Kris Johnson
Summary: Floodplains play a crucial role in providing ecosystem services, but human alterations have led to loss of natural floodplain functions, increasing flood risks and causing significant loss of life and property. Despite the growing need for improved floodplain protection and management, there has been no comprehensive global assessment of human floodplain alterations. We have developed the first publicly available global dataset that quantifies these alterations in 15 million km(2) of floodplains across 520 major river basins from 1992 to 2019. Our dataset sheds light on the significant loss of natural floodplains worldwide and provides valuable insights for decision-makers to strengthen strategies for conserving and restoring floodplain functions and habitats.
Article
Geosciences, Multidisciplinary
Julien Arsenault, Julie Talbot, Lee E. Brown, Joseph Holden, Karla Martinez-Cruz, Armando Sepulveda-Jauregui, Graeme T. Swindles, Maxime Wauthy, Jean-Francois Lapierre
Summary: Research has shown that peatland ponds are distinct from lakes in biogeochemical terms, while thermokarst waterbodies share characteristics with peatland ponds, lakes, or both. Peatland ponds tend to have higher dissolved organic carbon concentrations and acidity than lakes, highlighting their unique role in global biogeochemical cycles.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Green & Sustainable Science & Technology
Cathy J. Robinson, Jennifer Mairi Macdonald, Michael Douglas, Justin Perry, Samantha Setterfield, Dennis Cooper, Maria Lee, Jonathan Nadji, Sean Nadji, Alfred Nayinggul, Anita Nayinggul, Kenneth Mangiru, Fred Hunter, Bessie Coleman, Ryan Barrowei, Joe Markham, Jessie Alderson, Feach Moyle, Kadeem May, Na-gangila Bangalang
Summary: Research on sustainability science conducted with Indigenous collaborators must be led by indigenous leaders to achieve impacts aligned with local values and priorities. Evaluation methods for such research are limited, but collaborative and adaptive approaches can help assess the effectiveness of research practices in addressing complex sustainable issues facing Indigenous lands. Indigenous-led evaluations of sustainability research can empower the usability and benefits of negotiated, shared, and co-created knowledge.
SUSTAINABILITY SCIENCE
(2022)
Article
Ecology
David A. Crook, John R. Morrongiello, Alison J. King, Brendan J. Adair, Mark A. Grubert, Brien H. Roberts, Michael M. Douglas, Thor M. Saunders
Summary: Fisheries and natural water resources are facing increasing pressure from human activity. The study on Barramundi recruitment found that climatic/hydrological drivers have a significant impact and increased water resource development may pose risks for fishery productivity.
ECOLOGICAL APPLICATIONS
(2022)
Article
Environmental Sciences
David M. Costello, Scott D. Tiegs, Luz Boyero, Cristina Canhoto, Krista A. Capps, Michael Danger, Paul C. Frost, Mark O. Gessner, Natalie A. Griffiths, Halvor M. Halvorson, Kevin A. Kuehn, Amy M. Marcarelli, Todd Royer, Devan M. Mathie, Ricardo J. Albarino, Clay P. Arango, Jukka Aroviita, Colden Baxter, Brent J. Bellinger, Andreas Bruder, Francis J. Burdon, Marcos Callisto, Antonio Camacho, Fanny Colas, Julien Cornut, Veronica Crespo-Perez, Wyatt F. Cross, Alison M. Derry, Michael M. Douglas, Arturo Elosegi, Elvira Eyto, Veronica Ferreira, Carmen Ferriol, Tadeusz Fleituch, Jennifer J. Follstad Shah, Andre Frainer, Erica A. Garcia, Liliana Garcia, Pavel E. Garcia, Darren P. Giling, R. Karina Gonzales-Pomar, Manuel A. S. Graca, Hans-Peter Grossart, Francois Guerold, Luiz U. Hepp, Scott N. Higgins, Takuo Hishi, Carlos Iniguez-Armijos, Tomoya Iwata, Andrea E. Kirkwood, Aaron A. Koning, Sarian Kosten, Hjalmar Laudon, Peter R. Leavitt, Aurea L. Lemes da Silva, Shawn J. Leroux, Carri J. LeRoy, Peter J. Lisi, Frank O. Masese, Peter B. McIntyre, Brendan G. McKie, Adriana O. Medeiros, Marko Milisa, Yo Miyake, Robert J. Mooney, Timo Muotka, Jorge Nimptsch, Riku Paavola, Isabel Pardo, Ivan Y. Parnikoza, Christopher J. Patrick, Edwin T. H. M. Peeters, Jesus Pozo, Brian Reid, John S. Richardson, Jose Rincon, Geta Risnoveanu, Christopher T. Robinson, Anna C. Santamans, Gelas M. Simiyu, Agnija Skuja, Jerzy Smykla, Ryan A. Sponseller, Franco Teixeira-de Mello, Sirje Vilbaste, Veronica D. Villanueva, Jackson R. Webster, Stefan Woelfl, Marguerite A. Xenopoulos, Adam G. Yates, Catherine M. Yule, Yixin Zhang, Jacob A. Zwart
Summary: Microbes play a critical role in plant litter decomposition and the fate of carbon in rivers and riparian zones. The process of nutrient immobilization, whereby microbes acquire nitrogen and phosphorus from the environment during the decomposition of low-nutrient plant litter, is influenced by nutrient loading and changing climate. However, environmental controls on immobilization are poorly understood due to the complex interplay between environmental factors and plant litter chemistry.
GLOBAL BIOGEOCHEMICAL CYCLES
(2022)
Article
Green & Sustainable Science & Technology
Milena Kiatkoski Kim, Jorge G. Alvarez-Romero, Ken Wallace, David Pannell, Rosemary Hill, Vanessa M. Adams, Michael Douglas, Robert L. Pressey
Summary: Participatory scenario planning focuses on stakeholder feedback and subjective wellbeing to enhance planning legitimacy and relevance. The study found that different social groups had varying assessments of specific scenarios, particularly in evaluating development pathways like large-scale agriculture and poorly regulated development.
SUSTAINABILITY SCIENCE
(2022)
Article
Environmental Sciences
Jordan A. Iles, Neil E. Pettit, Michael J. Donn, Pauline F. Grierson
Summary: This study investigated the influence of dissolved organic matter (DOM) additions on the phosphate sorption kinetics of iron-rich sediments. The results showed that low-dose DOM addition reduced sediment P adsorption capacity, while high-dose DOM addition increased it. The study also revealed that phosphorus availability in dryland streams can be modulated by varying the concentration of humic-rich DOM.
Article
Ecology
Caroline A. Canham, Calum Woods, Samantha A. Setterfield, Erik J. Veneklaas, Fiona L. Freestone, Leah S. Beesley, Michael M. Douglas
Summary: Riparian trees are crucial for freshwater ecosystems, but they are being impacted by human-induced changes to water regimes around the world. This study focused on the Fitzroy River in Australia and used a trait-based approach to understand the distribution of nine riparian tree species along a hydrological gradient. The study found that leaf traits and water availability traits were related to species' habitat preferences. Additionally, lower stem specific density values may indicate flood adaptation. Differences in leaf traits were primarily driven by the distinction between evergreen Myrtaceous and deciduous non-Myrtaceous species, rather than hydrological habitat preferences.
Article
Ecology
Leah S. Beesley, Savannah Killerby-Smith, Daniel C. Gwinn, Bradley J. Pusey, Michael M. Douglas, Peter A. Novak, Thiaggo C. Tayer, Chris S. Keogh, Mark J. Kennard, Caroline A. Canham, Samantha A. Setterfield
Summary: Water development poses a threat to rivers and their biodiversity, especially for amphidromous shrimp species. This study explores the habitat associations and flow-ecology of Macrobrachium spinipes, a species of amphidromous shrimp in the Fitzroy River, Australia. The findings highlight the importance of protecting wet-season flow and passage for the conservation of this and other amphidromous shrimp species across the region.
FRESHWATER BIOLOGY
(2023)
Article
Ecology
Jordan A. Iles, Neil E. Pettit, Greg Cawthray, Pauline F. Grierson
Summary: This study investigates the effects of nutrient limitation on periphyton communities in freshwater streams. Results show that nitrogen and phosphorus are co-limiting factors for periphyton production and community structure. Nitrogen addition shifts the community from diatom-dominated to chlorophyte-dominated, benefiting cyanophyta growth. Phosphorus addition reduces diatoms and leads to cell lysis. The study highlights the importance of nutrient balance in freshwater ecosystems and the potential impacts on food webs.
FRESHWATER BIOLOGY
(2022)
Article
Geography, Physical
Thiaggo C. Tayer, Michael M. Douglas, Mauricio C. R. Cordeiro, Andre D. N. Tayer, J. Nik Callow, Leah Beesley, Don McFarlane
Summary: Mapping surface water in intermittent rivers using optical imagery is challenging due to the contraction of water into narrow linear features and isolated pools. The Water Detect algorithm is a highly accurate and open-source method for water detection without the need for ancillary data. However, its performance with high-resolution Planetscope imagery and the influence of input parameters are unknown. In this study, we automated a method for band sharpening and synthesis and conducted a sensitivity analysis to identify optimal parameters for water detection. Our results showed that using the parameters from the sensitivity analysis and Visible + Near-infrared (VNIR) bands improved the accuracy of water detection, while image sharpening had limited impact. The regularization parameter had less influence than maximum clustering. Calibrating input parameters to local conditions is crucial for accurate results. Our approach was effective in detecting linear features in intermittent rivers. Practitioners using the Water Detect algorithm should follow a similar workflow to improve its accuracy.
GISCIENCE & REMOTE SENSING
(2023)
Article
Engineering, Civil
Thiaggo C. Tayer, Leah S. Beesley, Michael M. Douglas, Sarah A. Bourke, J. Nik Callow, Karina Meredith, Don McFarlane
Summary: Accurately describing intermittent rivers' hydrology is crucial for improving our knowledge and management of freshwater ecosystems. Multispectral imagery provides a cost-effective approach to characterize hydrology and gain ecological insight in remote intermittent rivers with little or no gauging infrastructure. In this study, an algorithm was developed to extract hydrological attributes and metrics from Sentinel-2 multispectral imagery, demonstrating its effectiveness in describing seasonal patterns, transitions from wet to dry, and identifying river sections with different hydrological persistence.
JOURNAL OF HYDROLOGY
(2023)
Article
Ecology
Nadine Ebm, Fen Guo, Michael T. Brett, Stuart E. Bunn, Brian Fry, Martin J. Kainz
Summary: Organisms at the base of stream food webs have a low supply of long-chain polyunsaturated fatty acids (LC-PUFA) such as docosahexaenoic acid (DHA), while consumers at higher trophic levels are rich in LC-PUFA. This study investigated the origins of LC-PUFA in these consumers and found that they are likely obtained through selective retention of dietary sources rather than endogenous conversion. Stable isotopes were used to track the sources of LC-PUFA, with results showing that consumers retained algal-derived PUFA in oligotrophic headwater streams.
FRESHWATER BIOLOGY
(2023)
Article
Multidisciplinary Sciences
Johan Rockstroem, Joyeeta Gupta, Dahe Qin, Steven J. Lade, Jesse F. Abrams, Lauren S. Andersen, David I. Armstrong McKay, Xuemei Bai, Govindasamy Bala, Stuart E. Bunn, Daniel Ciobanu, Fabrice DeClerck, Kristie Ebi, Lauren Gifford, Christopher Gordon, Syezlin Hasan, Norichika Kanie, Timothy M. Lenton, Sina Loriani, Diana M. Liverman, Awaz Mohamed, Nebojsa Nakicenovic, David Obura, Daniel Ospina, Klaudia Prodani, Crelis Rammelt, Boris Sakschewski, Joeri Scholtens, Ben Stewart-Koster, Thejna Tharammal, Detlef van Vuuren, Peter H. Verburg, Ricarda Winkelmann, Caroline Zimm, Elena M. Bennett, Stefan Bringezu, Wendy Broadgate, Pamela A. Green, Lei Huang, Lisa Jacobson, Christopher Ndehedehe, Simona Pedde, Juan Rocha, Marten Scheffer, Lena Schulte-Uebbing, Wim de Vries, Cunde Xiao, Chi Xu, Xinwu Xu, Noelia Zafra-Calvo, Xin Zhang
Summary: The stability and resilience of the Earth system and human well-being are closely linked but often treated independently. This study proposes safe and just Earth system boundaries to maintain stability and minimize harm to humans from Earth system change. Findings show that justice considerations have a greater impact on setting boundaries than safety considerations.
Article
Zoology
Thiely O. Garcia, Naraiana L. Benone, Bruno S. Prudente, Naiara R. Torres, Stuart E. Bunn, Mark J. Kennard, Luciano F. A. Montag
Summary: The Amazon River basins have unique natural and anthropogenic characteristics that affect the structure and biota of stream habitats. This study aimed to evaluate the influence of local, macroscale, and land-use variables on the structure of stream fish assemblages in Amazonian catchments with different deforestation levels. The results showed that macroscale and local variables explained the variation in fish composition, while land use also played a role in the variation when spatial effects were not considered. In forested catchments, the fish assemblages were associated with streams with natural characteristics, while in deforested catchments, they were associated with land use, sandy catchments, and less complex streams.
NEOTROPICAL ICHTHYOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Ben Stewart-Koster, Stuart E. Bunn, Pamela Green, Christopher Ndehedehe, Lauren S. Andersen, David I. Armstrong McKay, Xuemei Bai, Fabrice DeClerck, Kristie L. Ebi, Christopher Gordon, Joyeeta Gupta, Syezlin Hasan, Lisa Jacobson, Steven J. Lade, Diana Liverman, Sina Loriani, Awaz Mohamed, Nebojsa Nakicenovic, David Obura, Dahe Qin, Crelis Rammelt, Juan C. Rocha, Johan Rockstroem, Peter H. Verburg, Caroline Zimm
Summary: This study assesses whether renewable surface water is enough to meet people's basic needs and estimates that approximately 2.6 billion people live in river basins where groundwater is needed, while over 1.4 billion people would require demand-side transformations and another 1.5 billion people would require both supply and demand-side transformations. These findings highlight the challenges and opportunities of meeting basic water access needs and protecting aquatic ecosystems.
NATURE SUSTAINABILITY
(2023)
Article
Biology
Mariana A. Campbell, Vinay Udyawer, Timothy D. Jardine, Yusuke Fukuda, R. Keller Kopf, Stuart E. Bunn, Hamish A. Campbell
Summary: This study explores the dietary changes of estuarine crocodiles during their population recovery. The results show that contemporary crocodiles have a preference for terrestrial food sources rather than marine ones, possibly due to increased competition and a higher abundance of feral ungulates. The study also reveals that the consumption of feral pigs by crocodiles helps control pig population growth and increase the flow of terrestrially derived nutrients into aquatic ecosystems.
