Article
Biodiversity Conservation
Luiz A. A. Domeignoz-Horta, Grace Pold, Hailey Erb, David Sebag, Eric Verrecchia, Trent Northen, Katherine Louie, Emiley Eloe-Fadrosh, Christa Pennacchio, Melissa A. A. Knorr, Serita D. D. Frey, Jerry M. M. Melillo, Kristen M. M. DeAngelis
Summary: Microbes play a crucial role in cycling carbon through soils, and understanding their physiological response to warming is important for predicting soil carbon stocks under climate change. This study investigated the long-term impacts of warming on microbial physiology and found that microbial thermal acclimation and changes in substrate availability both contribute to these impacts. Additionally, seasonal inputs of fresh litter counteract the apparent thermal acclimation of carbon-cycling processes in response to warming. These findings highlight the indirect effects of long-term warming on microbial physiology and suggest the need for earth system models to incorporate these feedbacks.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Agronomy
Zhenxing Zhou, Xiaojing Yue, Heng Li, Jiajia Zhang, Junqin Liang, Xueting Yuan, Jingyi Ru, Jian Song, Ying Li, Mengmei Zheng, Dafeng Hui, Shiqiang Wan
Summary: This study investigated the impacts of climate change on the phenological sensitivity of dominant temperate grasslands in northern China. The results showed that the sensitivity of flowering phenology to precipitation change was symmetric, while warming stimulated the phenological sensitivity. These findings suggest that arid grasslands are more sensitive to climate warming and that soil moisture and vegetation index play important roles in controlling phenological sensitivity.
AGRICULTURAL AND FOREST METEOROLOGY
(2022)
Article
Environmental Sciences
Xingcai Liu, Wenfeng Liu, Qiuhong Tang, Bo Liu, Yoshihide Wada, Hong Yang
Summary: Climate change has negative effects on water availability and food production. This study develops an integrated agricultural water scarcity index that shows future water scarcity will increase and highlights the importance of green water management for agriculture.
Article
Ecology
Yang Liu, Mingxin Men, Zhengping Peng, James H. Houx, Yunfeng Peng
Summary: Temperature and water availability are considered as primary controls over the effects of warming on ecosystem productivity, but soil nitrogen availability has a stronger influence over a broad geographical scale. The warming effect on productivity is mainly driven by its effect on soil nitrogen availability. Nitrogen addition weakens the positive warming effect, indicating that nitrogen regulates the warming effect.
Article
Plant Sciences
C. Fahey, W. C. Parker, A. Paquette, C. Messier, P. M. Antunes
Summary: This study found that there is a strong relationship between plant diversity and productivity, which is mediated by soil fungi through various mechanisms such as altered resource partitioning, facilitation via fungal networks, and biotic feedbacks. This relationship is context dependent and influenced by resource availability.
JOURNAL OF ECOLOGY
(2023)
Article
Environmental Sciences
Wanxuan Yao, Karin F. Kvale, Wolfgang Koeve, Angela Landolfi, Eric Achterberg, Erin M. Bertrand, Andreas Oschlies
Summary: This study used three biogeochemical models to investigate the changes in marine nitrogen cycle under a high CO2 emissions future scenario. The representation of iron had a significant impact on global nitrogen fixation, especially in the Eastern boundary upwelling zones, where bottom-up control of iron limitation played a key role in reducing export production with warming.
GLOBAL BIOGEOCHEMICAL CYCLES
(2022)
Article
Environmental Sciences
Antonio Jesus Zapata-Sierra, Lourdes Zapata-Castillo, Francisco Manzano-Agugliaro
Summary: Climate change has a major impact on water resources availability in the western Mediterranean basin, with decreasing precipitation and evapotranspiration and increasing temperature. The study predicts a 50% decrease in available resources, which will affect current agricultural land uses and necessitate a reconsideration of surface water use policy.
ENVIRONMENTAL SCIENCES EUROPE
(2022)
Article
Multidisciplinary Sciences
Michael O'Sullivan, Pierre Friedlingstein, Stephen Sitch, Peter Anthoni, Almut Arneth, Vivek K. Arora, Vladislav Bastrikov, Christine Delire, Daniel S. Goll, Atul Jain, Etsushi Kato, Daniel Kennedy, Juergen Knauer, Sebastian Lienert, Danica Lombardozzi, Patrick C. McGuire, Joe R. Melton, Julia E. M. S. Nabel, Julia Pongratz, Benjamin Poulter, Roland Seferian, Hanqin Tian, Nicolas Vuichard, Anthony P. Walker, Wenping Yuan, Xu Yue, Soenke Zaehle
Summary: Current land models capture the observed global net land carbon sink, but there is uncertainty in the partitioning of the sink between vegetation and soil. This uncertainty is mainly driven by plant productivity and turnover, as well as the response of soil to climate and land-use and land-cover change (LULCC).
NATURE COMMUNICATIONS
(2022)
Article
Environmental Sciences
Qun Guo, Zhongmin Hu, Shenggong Li, Yapeng Hao, Naishen Liang, Wenming Bai, Shu Zhang
Summary: The study found that nitrogen enrichment significantly increased the foliar nitrogen content of grassland plants, leading to higher photosynthetic rates and aboveground biomass. This stimulated gross primary productivity but had little effect on ecosystem respiration, resulting in a more negative net ecosystem CO2 exchange. The nitrogen-induced reduction in CO2 exchange increased linearly with increasing water availability, indicating a complex interaction between nitrogen addition, water availability, and carbon fluxes in grassland ecosystems.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2021)
Article
Soil Science
Jane M. Lucas, Bronte S. Sone, Dana Whitmore, Michael S. Strickland
Summary: Antibiotics and rising soil temperatures interact to disrupt bacterial assemblages and network structure, allowing for a rise in fungal dominance and change in soil nutrient stoichiometry. Antibiotics alone decrease bacterial diversity, abundance, total extractable N, and microbial carbon use efficiency, while increasing bioavailable C. Higher temperatures independently homogenize fungal community composition, decrease dissolved organic C and increase soil respiration rates.
SOIL BIOLOGY & BIOCHEMISTRY
(2021)
Article
Plant Sciences
Xuying Hai, Jianping Li, Jiwei Li, Yulin Liu, Lingbo Dong, Xiaozhen Wang, Wenwen Lv, Zhenhong Hu, Zhouping Shangguan, Lei Deng
Summary: Altered precipitation has significant effects on water use efficiency (WUE) of plants in arid and semi-arid regions. Decreased precipitation generally increases WUE in some grass species, while increased precipitation may decrease WUE in certain plants. Grasses have higher WUE compared to forbs.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Environmental Sciences
Shuai Ren, Yingfang Cao, Juan Li
Summary: By synthesizing data from 306 grazing experiments, it was found that grassland plant diversity is controlled by soil nitrogen content. The impact of grazing on plant diversity is influenced by changes in soil nitrogen. In regions with low nitrogen deposition, additional management strategies are required to maintain grassland biodiversity by improving soil fertility.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Agriculture, Multidisciplinary
Matti Sihvonen, Sampo Pihlainen, Tin-Yu Lai, Tapio Salo, Kari Hyytiainen
Summary: The article introduces a multistep modeling approach for optimal management of fertilizer inputs, considering soil nitrogen and carbon dynamics, water and atmosphere externalities. Results show synergy between climate change mitigation and water protection goals, as well as a trade-off between pollution mitigation and crop production goals. Integrated nutrient management system proves better than using only inorganic or organic fertilizers.
AGRICULTURAL SYSTEMS
(2021)
Article
Environmental Sciences
Maria Pia Gervasio, Elisa Soana, Tommaso Granata, Daniela Colombo, Giuseppe Castaldelli
Summary: This study investigated the nitrogen load in the Po River watershed in Northern Italy over the past three decades and its relationship with water temperature trends. The results showed a significant reduction in total nitrogen load, mainly nitrate, in the river, which is attributed to the increasing water temperature. The study suggests that climate change may have negative feedback on eutrophication, contributing to the reduction of nitrogen export.
ENVIRONMENTAL RESEARCH LETTERS
(2022)
Article
Environmental Sciences
Qiongyu Zhang, Jianxing Zhu, Qiufeng Wang, Jan Mulder, Congqiang Liu, Nianpeng He
Summary: N deposition in China's forests has led to soil acidification, with NHx deposition dominating in 80% of the area and NOy deposition dominating in South China. The contribution of NOy has been increasing over the years, while the contribution of NHx has been higher but decreasing. Soil acidification is influenced by the ratio of NHx to NOy, as NOy has a higher net proton production due to leaching in the form of NO3-. This research is important for policymaking and emphasizes the need to consider the synergistic effect of R-NHx/NOy changes to alleviate soil acidification.
GLOBAL BIOGEOCHEMICAL CYCLES
(2023)
Article
Ecology
Marcos Fernandez-Martinez, Catherine Preece, Jordi Corbera, Oriol Cano, Joan Garcia-Porta, Jordi Sardans, Ivan A. Janssens, Francesc Sabater, Josep Penuelas
Summary: The study revealed that bryophyte species have C:N:P ratios intermediate between marine plankton and vascular plants, with differentiated biogeochemical niches among species that are phylogenetically conserved. Differences in individual and species-specific elementomes increased with coexistence between species.
Article
Biodiversity Conservation
Bianca M. Rodriguez-Cardona, Adam S. Wymore, Alba Argerich, Rebecca T. Barnes, Susana Bernal, E. N. Jack Brookshire, Ashley A. Coble, Walter K. Dodds, Hannah M. Fazekas, Ashley M. Helton, Penny J. Johnes, Sherri L. Johnson, Jeremy B. Jones, Sujay S. Kaushal, Pirkko Kortelainen, Carla Lopez-Lloreda, Robert G. M. Spencer, William H. McDowell
Summary: DOC and DON concentrations in streams show different trends in various biomes and the DOC:DON molar ratios increase over time. The recovery from atmospheric acid deposition leads to fundamental changes in the DOM pool, affecting biogeochemical processes and food webs in streams.
GLOBAL CHANGE BIOLOGY
(2022)
Review
Environmental Sciences
Stefan Krause, Benjamin W. Abbott, Viktor Baranov, Susana Bernal, Phillip Blaen, Thibault Datry, Jennifer Drummond, Jan H. Fleckenstein, Jesus Gomez Velez, David M. Hannah, Julia L. A. Knapp, Marie Kurz, Joerg Lewandowski, Eugenia Marti, Clara Mendoza-Lera, Alexander Milner, Aaron Packman, Gilles Pinay, Adam S. Ward, Jay P. Zarnetzke
Summary: Hyporheic zones play a crucial role in enhancing the resilience of freshwater ecosystems to hydrological extremes and global environmental change. However, current conceptualizations of hyporheic exchange and biogeochemical cycling in streambed sediments do not fully capture the complexity observed in streams and rivers. This article seeks to identify the key drivers and controls of hyporheic exchange flow (HEF) and biogeochemical processes, and improve the conceptualization of these processes at different spatial scales. This improved understanding will inform future river research and watershed management strategies.
WATER RESOURCES RESEARCH
(2022)
Article
Water Resources
Adam S. Ward, Aaron Packman, Susana Bernal, Nicolai Brekenfeld, Jen Drummond, Emily Graham, David M. Hannah, Megan Klaar, Stefan Krause, Marie Kurz, Angang Li, Anna Lupon, Feng Mao, M. Eugenia Marti Roca, Valerie Ouellet, Todd Royer, James C. Stegen, Jay P. Zarnetske
Summary: A unified conceptual framework for river corridors requires synthesis of diverse site-, method- and discipline-specific findings. In this study, an inductive approach using machine learning was used to identify potential relationships in river corridor observations. The approach generated numerous previously uninvestigated relationships and highlighted novel research questions.
HYDROLOGICAL PROCESSES
(2022)
Article
Biodiversity Conservation
Sara Castelar, Susana Bernal, Miquel Ribot, Stephanie N. Merbt, Marta Tobella, Francesc Sabater, Jose L. J. Ledesma, Helena Guasch, Anna Lupon, Esperanca Gacia, Jennifer D. Drummond, Eugenia Marti
Summary: Intermittent Mediterranean streams receiving WWTP effluent inputs exhibit temporal and spatial variation in net nutrient uptake. Consideration of the receiving stream's dilution capacity is crucial for managing wastewater inputs and preventing saturation of in-stream nutrient uptake capacity under low flow conditions in urban landscapes.
Article
Engineering, Environmental
Jennifer D. Drummond, Susana Bernal, Warren Meredith, Rina Schumer, Eugenia Marti
Summary: The relevance of wastewater treatment plant effluents in fluvial networks is increasing with urbanization. Urban-sourced fine particles from the effluents can deposit and accumulate in streambed sediment, fueling biogeochemical reactions and CO2 emissions.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Ecology
Helena Guasch, Susana Bernal, Daniel Bruno, Bethanie Carney Almroth, Joaquin Cochero, Natalia Corcoll, Delfina Cornejo, Esperanca Gacia, Alexandra Kroll, Isabelle Lavoie, Jose L. J. Ledesma, Anna Lupon, Henar Margenat, Soizic Morin, Enrique Navarro, Miquel Ribot, Tenna Riis, Mechthild Schmitt-Jansen, Ahmed Tlili, Eugenia Marti
Summary: Microplastics, small polymer particles, are persistent pollutants found in various environments. They interact with biofilms, microbial assemblages, in freshwater ecosystems, impacting biodiversity and ecosystem function. Exploring the interactions between microplastics and biofilms is essential for better management and understanding their effects on the environment.
FRESHWATER SCIENCE
(2022)
Article
Limnology
Susana Bernal, Mathew J. Cohen, Jose L. J. Ledesma, Lily Kirk, Eugenia Marti, Anna Lupon
Summary: This study reveals that in some headwater streams, in-stream metabolism may play a more important role in driving carbon cycling than previously assumed. The production of CO2 within the streams significantly contributes to the total atmospheric CO2 flux.
LIMNOLOGY AND OCEANOGRAPHY
(2022)
Article
Environmental Sciences
Nuria Catalan, Maria Anton-Pardo, Anna Freixa, Pablo Rodriguez-Lozano, Mireia Bartrons, Susana Bernal, Ana Genua-Olmedo, Clara Mendoza-Lera, Gabriela Onandia, Xavier Benito, Maria Mar Sanchez-Montoya, Miguel Canedo-Arguelles Iglesias, Ada Pastor, Anna Lupon
Summary: The article reviews the role and contributions of women in limnology and calls for more recognition and attention to their work. It also analyzes the current issues and future prospects for women in the field of limnology.
WILEY INTERDISCIPLINARY REVIEWS-WATER
(2023)
Article
Ecology
Nuria Catalan, Ruben del Campo, Matthew Talluto, Clara Mendoza-Lera, Giulia Grandi, Susana Bernal, Daniel von Schiller, Gabriel Singer, Enrico Bertuzzo
Summary: Streams and rivers act as bioreactors processing large quantities of particulate organic matter. Climate change impacts the flow regime, affecting the decomposition and transport of organic matter. This study explored the consequences of lateral hydrological contraction on the decomposition and transport of organic matter in river networks.
Article
Limnology
Jacob S. Diamond, Gilles Pinay, Susana Bernal, Matthew J. Cohen, David Lewis, Anna Lupon, Jay Zarnetske, Florentina Moatar
Summary: Stream dissolved oxygen dynamics are influenced by light and discharge, and their synchrony patterns are important for scaling metabolic activity estimates in stream networks and regions.
LIMNOLOGY AND OCEANOGRAPHY
(2023)
Article
Limnology
Anna Lupon, Lluis Gomez-Gener, Megan L. Fork, Hjalmar Laudon, Eugenia Marti, William Lidberg, Ryan A. Sponseller
Summary: This study investigates how groundwater-stream confluences regulate the activity of heterotrophic microbes by combining laboratory bioassays and field additions of a metabolic tracer. The findings suggest that the influence of these confluences on heterotrophic activity varies spatially and temporally, and is related to the dissolved organic matter content and composition. At a larger scale, these confluences increase the spatial heterogeneity and rates of heterotrophic activity in the entire stream, especially during periods of high land-water hydrological connectivity. Overall, this research demonstrates the impact of lateral groundwater connections on heterotrophic activity in streams and their implications for watershed biogeochemical cycles.
LIMNOLOGY AND OCEANOGRAPHY LETTERS
(2023)
Article
Ecology
Xavier Penarroya, Anna Lupon, Xavier Triado-Margarit, Eugenia Marti, Jose L. J. Ledesma, Miquel Ribot, Montserrat Soler, Emilio O. Casamayor, Susana Bernal
Summary: This study investigates the impact of dissolved organic carbon (DOC) and dissolved inorganic nitrogen (DIN) on ammonium (NH4+) uptake and heterotrophic aerobic respiration in a forested Mediterranean headwater stream. It was found that NH4+ uptake and heterotrophic aerobic respiration rates were closely related to the molar ratio of NH4+ to nitrate (NO3-) (NH4+:NO3-) and the ratio of DOC to DIN (DOC:DIN). Additionally, the availability of labile DOC also limited heterotrophic activity. These findings are significant for understanding the seasonal pattern of in-stream N processing in forested Mediterranean headwater streams.
FRESHWATER BIOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Jose L. J. Ledesma, Anna Lupon, Eugenia Marti, Susana Bernal
Summary: In forest headwater streams, the interaction between hydrological conditions and riparian forest coverage plays a significant role in the supply and stoichiometry of dissolved organic carbon (DOC) and nitrate (NO3-). This study highlights the importance of groundwater inputs from riparian forests in maintaining in-stream heterotrophic activity in forest headwater catchments.
HYDROLOGY AND EARTH SYSTEM SCIENCES
(2022)