Article
Ecology
Mohammed Hamdan, Jan Karlsson, Par Bystrom, Mohammed J. Al-Haidarey, Jenny Ask
Summary: This study found that benthic microalgal GPP can be CO2-limited when light is not limiting, and both dissolved inorganic carbon and DOC additions can stimulate benthic GPP.
FRESHWATER BIOLOGY
(2022)
Article
Environmental Sciences
Dulce Flores-Renteria, Josue Delgado-Balbuena, Emmanuel F. Campuzano, Jorge Curiel Yuste
Summary: The study focuses on rates and controls of CO2 exchange in the Chihuahuan Desert in Mexico. It reveals the poor understanding of CO2 exchange in arid ecosystems, despite their significant role in global CO2 sink capacity. The study highlights the variations in controlling mechanisms of CO2 exchange between wet and dry seasons, with radiation, temperature, and soil moisture being key factors. Understanding these changes is crucial for predicting the impact of future climate changes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Agronomy
Bingxue Wang, Weinan Chen, Junhu Dai, Zhaolei Li, Zheng Fu, Sangeeta Sarmah, Yiqi Luo, Shuli Niu
Summary: This study analyzed data from 326 globally distributed sites and found that GPP_T_opt responds non-linearly to climate variables such as soil moisture, solar radiation, temperature, and vapor pressure deficit. The response of GPP_T_opt to global warming depends on the dryness conditions, with vegetation in humid climates benefiting more from a warmer climate.
AGRICULTURAL AND FOREST METEOROLOGY
(2022)
Article
Environmental Sciences
Yulong Lv, Hong Chi, Peichen Shi, Duan Huang, Jialiang Gan, Yifan Li, Xinyi Gao, Yifei Han, Cun Chang, Jun Wan, Feng Ling
Summary: In this study, a phenology-based strategy was used to estimate the parameter e(0) and its optimal photosynthetic responses in different phenological stages. The results showed that the phenology-based GPP(phe-based) tracked the seasonal dynamics and inter-annual variation of GPP(EC) well, especially in forest, cropland, and wetland ecosystems. Additionally, the phenology-based e(0) was found to be more appropriate for GPP estimation in herbaceous plants compared to the VPM-based GPP(VPM).
Article
Environmental Sciences
Lingxiao Huang, Xiaofeng Lin, Shouzheng Jiang, Meng Liu, Yazhen Jiang, Zhao-Liang Li, Ronglin Tang
Summary: This study proposes a new two-stage light-use efficiency model that can improve the estimation of gross primary production in agroecosystems and shows great potential at a global scale.
ENVIRONMENTAL RESEARCH LETTERS
(2022)
Article
Geosciences, Multidisciplinary
Benjamin Wild, Irene Teubner, Leander Moesinger, Ruxandra-Maria Zotta, Matthias Forkel, Robin van der Schalie, Stephen Sitch, Wouter Dorigo
Summary: Long-term global monitoring of terrestrial gross primary production (GPP) is crucial for assessing ecosystem responses to global climate change. This study introduces a new dataset, VODCA2GPP, which utilizes microwave remote sensing estimates of vegetation optical depth (VOD) to estimate GPP at the global scale for the period 1988-2020. The dataset shows robust performance and provides valuable data for assessing large-scale and long-term changes in GPP for global vegetation and carbon cycle studies.
EARTH SYSTEM SCIENCE DATA
(2022)
Article
Environmental Sciences
Manolaki Paraskevi, Gimenez-Grau Pau, Pastor Ada, Baattrup-Pedersen Annette, Riis Tenna
Summary: Weed cutting in a large lowland river in Denmark significantly altered the physical conditions of the river and reduced the metabolic rates of Gross Primary Production (GPP) and Ecosystem Respiration (ER). Moreover, the metabolic rates did not fully recover to pre-weed cutting levels within 2-6 weeks. The study highlights the need to consider the cascade effects of metabolic rate alterations on ecosystem structure and functioning in future management plans.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Geochemistry & Geophysics
Daniel E. Pabon-Moreno, Mirco Migliavacca, Markus Reichstein, Miguel D. Mahecha
Summary: In the past decade, various methodologies have been developed to estimate the spatiotemporal dynamics of GPP. Predictions of GPP using machine learning techniques or semiempirical models, especially the availability of red-edge bands for estimating canopy chlorophyll content, have shown significant potential.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2022)
Article
Environmental Sciences
Dandan Du, Chaolei Zheng, Li Jia, Qiting Chen, Min Jiang, Guangcheng Hu, Jing Lu
Summary: This study developed a light-use-efficiency model driven by remote sensing data to estimate cropland gross primary production (GPP). The model includes a limiting factor accounting for soil water availability. The results showed that the model with optimized parameters and the water availability limiting factor improved the estimation accuracy of GPP. The model was also able to capture the impacts of water stress on cropland GPP.
Article
Agronomy
Ruiyang Yu, Yunjun Yao, Qingxin Tang, Changliang Shao, Joshua B. Fisher, Jiquan Chen, Kun Jia, Xiaotong Zhang, Yufu Li, Ke Shang, Junming Yang, Lu Liu, Xueyi Zhang, Xiaozheng Guo, Zijing Xie, Jing Ning, Jiahui Fan, Lilin Zhang
Summary: A novel LUE-Gradient Boosting Regression Trees (GBRT) model framework was proposed to improve the estimation of grassland GPP by deriving water scalar from five different water constraints. The performance of the LUE-GBRT model was evaluated and compared with other GPP models, and it was found that LUE-GBRT showed superior performance with the highest Kling-Gupta efficiency and lowest root-mean-square error. The innovation of this method lies in its combination of machine learning and physical-based framework for optimal accuracy.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Biodiversity Conservation
Hongzhe Li, Yi He, Lifeng Zhang, Shengpeng Cao, Qiang Sun
Summary: This study explores the spatiotemporal patterns of Gross Primary Production (GPP) in the Yellow River Basin of China from interannual, seasonal, and vegetation-type perspectives using solar-induced chlorophyll fluorescence GPP data. The results show a general upward trend of GPP in the Yellow River Basin during 2001-2020, but intensive climate change and human activity lead to a rapid decline in local areas, especially in large and medium-sized cities. The driving factors of GPP rank as leaf area index>precipitation>evapotranspiration>temperature, and the explanatory power for GPP spatial heterogeneity is nonlinearly enhanced after multi-factor interaction. Climate-driven effects on GPP are concentrated in the grassland of the western region, while human-activity effects are mainly manifested through crops in the southeastern farming region with significant seasonal variations. This study provides a theoretical basis for the ecological protection and sustainable development of the Yellow River Basin in China.
GLOBAL ECOLOGY AND CONSERVATION
(2023)
Correction
Multidisciplinary Sciences
Yao Zhang, Xiangming Xiao, Xiaocui Wu, Sha Zhou, Geli Zhang, Yuanwei Qin, Jinwei Dong
Summary: A correction to this paper has been published.
Article
Environmental Sciences
Ruonan Chen, Liangyun Liu, Xinjie Liu, Zhunqiao Liu, Lianhong Gu, Uwe Rascher
Summary: This study presents methods to accurately estimate sub-daily GPP from SIF in evergreen needleleaf forests and demonstrates that the interactions among light, canopy structure, and leaf physiology regulate the SIF-GPP relationship at the canopy scale.
REMOTE SENSING OF ENVIRONMENT
(2024)
Article
Environmental Sciences
Yipu Wang, Rui Li, Jiheng Hu, Yuyun Fu, Jiawei Duan, Yuanxi Cheng
Summary: This study developed a new LUE model coupled with a passive microwave vegetation index for daily GPP estimation, and validated the model using 8-year in-situ measurements from seven flux tower sites. The model showed better accuracy in capturing short-term variations in daily GPP, particularly under moderate and heavy cloud cover conditions.
REMOTE SENSING OF ENVIRONMENT
(2021)
Article
Environmental Sciences
Michele A. Burford, Stephen J. Faggotter
Summary: Estuaries in the tropical Gulf of Carpentaria in Australia are facing increasing pressure from catchment water development. The addition of nutrients can stimulate mudflat primary production, with the Flinders estuary being the most productive of the three. However, excessive water development may impact productivity in these estuaries.
MARINE POLLUTION BULLETIN
(2021)
Article
Environmental Sciences
Spencer Hays, Bandana Kumari, Ben Stewart-Koster, Edward L. Boone, Fran Sheldon
Summary: This paper focuses on identifying a subset of sites and times that could be removed from sampling with a minimal impact on the subsequent ecosystem health scores, in order to reduce sampling costs while maintaining the integrity of the monitoring program.
ENVIRONMENTAL AND ECOLOGICAL STATISTICS
(2021)
Article
Multidisciplinary Sciences
Luz Boyero, Javier Perez, Naiara Lopez-Rojo, Alan M. Tonin, Francisco Correa-Araneda, Richard G. Pearson, Jaime Bosch, Ricardo J. Albarino, Sankarappan Anbalagan, Leon A. Barmuta, Leah Beesley, Francis J. Burdon, Adriano Caliman, Marcos Callisto, Ian C. Campbell, Bradley J. Cardinale, J. Jesus Casas, Ana M. Chara-Serna, Szymon Ciapala, Eric Chauvet, Checo Colon-Gaud, Aydee Cornejo, Aaron M. Davis, Monika Degebrodt, Emerson S. Dias, Maria E. Diaz, Michael M. Douglas, Arturo Elosegi, Andrea C. Encalada, Elvira de Eyto, Ricardo Figueroa, Alexander S. Flecker, Tadeusz Fleituch, Andre Frainer, Juliana S. Franca, Erica A. Garcia, Gabriela Garcia, Pavel Garcia, Mark O. Gessner, Paul S. Giller, Jesus E. Gomez, Sergio Gomez, Jose F. Goncalves, Manuel A. S. Graca, Robert O. Hall, Neusa Hamada, Luiz U. Hepp, Cang Hui, Daichi Imazawa, Tomoya Iwata, S. A. Junior Edson, Samuel Kariuki, Andrea Landeira-Dabarca, Maria Leal, Kaisa Lehosmaa, Charles M'Erimba, Richard Marchant, Renato T. Martins, Frank O. Masese, Megan Camden, Brendan G. McKie, Adriana O. Medeiros, Jen A. Middleton, Timo Muotka, Junjiro N. Negishi, Jesus Pozo, Alonso Ramirez, Renan S. Rezende, John S. Richardson, Jose Rincon, Juan Rubio-Rios, Claudia Serrano, Angela R. Shaffer, Fran Sheldon, Christopher M. Swan, Nathalie S. D. Tenkiano, Scott D. Tiegs, Janine R. Tolod, Michael Vernasky, Anne Watson, Mourine J. Yegon, Catherine M. Yule
Summary: The study found significant differences in the impact of litter functional diversity on decomposition processes across different latitudes, indicating distinct evolutionary adaptations of litter-consuming detritivores at low and high latitudes.
Article
Agriculture, Multidisciplinary
Peta Zivec, Stephen Balcombe, James McBroom, Fran Sheldon, Samantha J. Capon
Summary: The study found that naturally regenerating woody vegetation on old-fields exhibited similarities to remnant vegetation in terms of composition but varied substantially with respect to key structural attributes.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2021)
Article
Fisheries
F. Sheldon, D. Barma, L. J. Baumgartner, N. Bond, S. M. Mitrovic, R. Vertessy
Summary: The study examined three significant fish death events that occurred in the Lower Darling River, Australia, from late 2018 to early 2019, attributing the causes to extreme hot and dry climate conditions, stratification and hypoxia in weir pools, and broader climatic, hydrological, and basin management contexts. The observations have implications for future river management, with suggestions made for policy makers and river operators to minimize fish death risks.
MARINE AND FRESHWATER RESEARCH
(2022)
Article
Environmental Sciences
Ross M. Thompson, Emily J. Barbour, Corey J. A. Bradshaw, Sue Briggs, Neil Byron, Michael Grace, Barry T. Hart, Alison J. King, Gene E. Likens, Carmel A. Pollino, Fran Sheldon, Michael J. Stewardson, Martin Thoms, Robyn J. Watts, J. Angus Webb
Summary: In the face of environmental and political challenges in river management, accurate and timely scientific information is crucial. Water scientists need to consider important points when engaging with policymakers and environmental water managers to inform policy and management effectively.
RIVER RESEARCH AND APPLICATIONS
(2022)
Article
Environmental Sciences
Songyan Yu, Peter M. Rose, Nick R. Bond, Stuart E. Bunn, Mark J. Kennard
Summary: This study demonstrates a new approach to identify surface water bodies as priority refuges for efficient conservation management of freshwater biodiversity in intermittent stream networks, considering the spatial distribution of dry-season aquatic refuges within river networks and the temporal dynamics of hydrological connectivity between them.
AQUATIC CONSERVATION-MARINE AND FRESHWATER ECOSYSTEMS
(2022)
Article
Ecology
Andressa da Silva Reis, Stuart E. Bunn, Miriam Pilz Albrecht
Summary: The study investigated the responses of fish communities to land use change in the Atlantic Forest ecoregion of southeast Brazil. The results showed that land use change affected the food web structure of fish communities and their inter-species and intra-guild trophic interactions. The study suggested that assessments of trophic interactions can detect the effects of land-use disturbance on fish communities.
FRESHWATER BIOLOGY
(2022)
Article
Ecology
Peta Zivec, Fran Sheldon, Samantha Capon
Summary: This study investigated the regenerative capacity of old-fields in semi-arid floodplains of eastern Australia through a year-long seedling emergence experiment, revealing that soil, leaf litter, and animal scats all contain rich germinable species. Overstory tree species are mainly absent from these seed sources, but they play an important role in the regeneration of understory and midstory species.
RESTORATION ECOLOGY
(2022)
Article
Ecology
Luke Carpenter-Bundhoo, Gavin L. L. Butler, Nick R. R. Bond, Jason D. D. Thiem, Stuart E. E. Bunn, Mark J. J. Kennard
Summary: Variation in river flow is crucial for the movement of freshwater fish species, with environmental flows playing a significant role in influencing their behavior. In a study of two native fish species in regulated rivers in Australia, it was found that environmental flow releases impacted the movement behaviors of the fish. Different species responded differently to environmental flow releases, and the timing of flow pulses was shown to influence their movements.
FRESHWATER BIOLOGY
(2022)
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.
Article
Water Resources
Michael J. Stewardson, Nick Bond, Justin Brookes, Samantha Capon, Fiona Dyer, Mike Grace, Paul Frazier, Barry Hart, Avril Horne, Alison King, Marcia Langton, Rory Nathan, Ian Rutherfurd, Fran Sheldon, Ross Thompson, Rob Vertessy, Glen Walker, Q. J. Wang, Skye Wassens, Robyn Watts, Angus Webb, Andrew W. Western
Summary: Some water scientists working in the Murray-Darling Basin have been accused of possible administrative capture, wherein they are perceived to advocate for government-favored policies in order to gain personal benefits. While this claim lacks substantial evidence and is unproven, it highlights the increasing politicization of science in basin water planning.
AUSTRALASIAN JOURNAL OF WATER RESOURCES
(2021)