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
Environmental Sciences
Ryan B. Wallace, Christopher J. Gobler
Summary: This study investigated the dynamic nature of hypoxia and acidification in eutrophic estuaries through continuous measurements, revealing their potential impact on marine food webs. The results showed high rates of respiration, diurnal variations in water column pH and dissolved oxygen, and contributions of nitrification and oxidation processes to acidification in these environments.
MARINE POLLUTION BULLETIN
(2021)
Article
Green & Sustainable Science & Technology
Qian Xu, Ren Yang, Dachang Zhuang, Zongliang Lu
Summary: This study analyzed the impact of urban and rural spatial gradients, landscape gradients, and urban development planning on ecosystem services supply and demand in the Pearl River Delta region. It found significant differences in the ES supply function among different cities, with regulating services being the most important function type. The study also observed a gradual increase in ES value within cities and complex variations in ES values between cities.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Ecology
J. D. Hosen, K. S. Aho, J. H. Fair, E. D. Kyzivat, S. Matt, J. Morrison, A. Stubbins, L. C. Weber, B. Yoon, P. A. Raymond
Summary: The study suggests that in large temperate rivers, the switch between autochthonous sources of DOM at low flows and terrestrial sources of DOM at high flows maintains the chemostasis of DOM concentrations, which is critical for river ecology during the summer. The dominance of terrigenous DOM during higher flow periods and the significant contribution of annual DOM fluxes to the coast being terrestrial are consistent with the Pulse-Shunt Concept and have implications for both inland waters and coastal ecosystems.
Article
Multidisciplinary Sciences
Taylor Maavara, Erica R. Siirila-Woodburn, Fadji Maina, Reed M. Maxwell, James E. Sample, K. Dana Chadwick, Rosemary Carroll, Michelle E. Newcomer, Wenming Dong, Kenneth H. Williams, Carl Steefel, Nicholas J. Bouskill
Summary: There is a growing understanding of the role of bedrock weathering as a nitrogen source in various environmental systems, especially in mountainous regions. However, the relative contributions of rock-derived nitrogen to nitrogen supply in mountainous watersheds are not well understood. The study developed a suite of models to quantify the sources, transformations, and sinks of geogenic and atmospheric nitrogen in a mountain watershed.
Article
Construction & Building Technology
Yingman Guo, Bin Fu, Yukuan Wang, Pei Xu, Qin Liu
Summary: Urban river recreation services (URRS) are important for enhancing the quality of urban life. This study examined the supply and demand of URRS in Jinjiang River and identified spatial mismatches using the 2SFCA method. The results showed severe supply-demand mismatches in the region, with factors such as distance to the city center, supply of river recreation spaces, and riverfront distance influencing the patterns. The research findings can contribute to improving the quantity and distribution of urban riverfront green spaces and inform urban residential layout and planning.
SUSTAINABLE CITIES AND SOCIETY
(2022)
Article
Environmental Sciences
Hejie Wei, Qing Han, Yi Yang, Ling Li, Mengxue Liu
Summary: A watershed ecosystem health assessment system is constructed based on an EVORSH framework and utilized to assess the ecosystem health in the Yihe River Basin in central China's Henan province. The evaluation result shows that the ecosystem health level in the Yihe River Basin is good, with considerable spatial heterogeneity. Population density, rainfall, and potential evapotranspiration are identified as the main factors influencing the distribution of ecosystem health in the basin.
Article
Engineering, Civil
Ke Zhu, Xintong Qiu, Yiwen Luo, Miaolin Dai, Xiaoqi Lu, Chuanfu Zang, Weiqiang Zhang, Xianhua Gan, Wuyun Zhula
Summary: This study used the Soil and Water Assessment Tool (SWAT) to analyze the spatial and temporal dynamics of water resources in typical ecosystems in the Dongjiang River Basin over the last 50 years. The findings revealed significant changes in the total quantity of water resources in the basin, influenced by precipitation and temperature. The water resources of typical ecosystems showed a declining trend, with the total quantity of water resources in the forest ecosystem increasing and then decreasing. Changes in land use were identified as a significant factor in the evolution of water resources.
JOURNAL OF HYDROLOGY
(2022)
Article
Engineering, Civil
Hongxiang Wang, Lintong Huang, Haitao Zhang, Yicheng Fu, Wenxian Guo, Xuyang Jiao, Haotong Zhou, Yongwei Zhu
Summary: Maintaining river health is vital for enhancing the service value of river basin ecosystems amidst changing environments. Researchers proposed an ecological flow threshold process with multiple ecological constraints, incorporating the Range of Variability Approach method and Improved Intra-annual Spreading method. Combining this with a multi-source dataset and the InVEST model, they established an 'ecology-function pattern-driven and decision' service framework. The study found that the Xiangjiang River basin's important ecological constraints on ecological flow changed over time due to hydrological changes (1991-2019).
JOURNAL OF HYDROLOGY
(2023)
Article
Ecology
Natalie K. Rideout, Zacchaeus G. Compson, Wendy A. Monk, Meghann R. Bruce, Mehrdad Hajibabaei, Teresita M. Porter, Michael T. G. Wright, Donald J. Baird
Summary: The study examines the relationships among floodplain wetland habitats, invertebrate communities, and ecosystem function. It reveals the importance of environmental filters and traits linked to ecosystem functions in shaping the diversity and stability of floodplain ecosystems.
FUNCTIONAL ECOLOGY
(2022)
Article
Environmental Sciences
Flavia Tromboni, Erin R. Hotchkiss, Anne E. Schechner, Walter K. Dodds, Simon R. Poulson, Sudeep Chandra
Summary: Diel variations in the isotopic composition of dissolved oxygen in river water suggest that carbon cycling in rivers may be faster than previously thought. By comparing oxygen concentration data with stable oxygen isotope signatures, researchers found that ecosystem respiration and gross primary production in rivers were higher than predicted by traditional methods.
COMMUNICATIONS EARTH & ENVIRONMENT
(2022)
Article
Green & Sustainable Science & Technology
Ziyong Su, Zhanqi Wang, Liguo Zhang
Summary: A reasonable watershed ecological compensation scheme is important for water resource protection and ecological sustainability. This study focuses on the Middle Route of South-to-North Water Diversion Project and calculates the change in the watershed's total ecosystem service value from 1990 to 2015 to develop a compensation scheme. Results show a slight downward trend in total ecosystem service value, but some functions have increased.
Article
Environmental Sciences
Shaun A. Forrest, Jesse C. Vermaire
Summary: River water in the Ottawa River watershed was analyzed for microplastics at 105 locations. The study standardized the sampling techniques and found that microplastic concentrations were relatively uniform throughout the watershed, with no significant accumulation in the lower reaches. The only significant factors influencing microplastic concentration were downstream distance and boat launch locations, although the relationships were not strong, suggesting a complex interaction of microplastics in large watersheds.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2023)
Article
Limnology
Alice M. Carter, Joanna R. Blaszczak, James B. Heffernan, Emily S. Bernhardt
Summary: Studies have found frequent occurrences of hypoxia in rivers and streams in the North Carolina Piedmont region, especially during warm and low flow periods. It is crucial to use new approaches to assess and compare oxygen levels in rivers.
LIMNOLOGY AND OCEANOGRAPHY
(2021)
Article
Environmental Sciences
Victoria J. Garcia, Erin R. Hotchkiss, Patricia Rodriguez
Summary: Beaver activity and dams have a significant impact on ecosystem metabolism in sub-Antarctic streams and rivers, despite no detectable effects on physical and chemical variables.
Article
Ecology
Alejandra Goldenberg-Vilar, Cristina Delgado, Francisco J. Penas, Jose Barquin
Summary: Rivers globally are being intensively managed with unprecedented flow alterations, leading to a growing interest in the ecological response of organisms. This study found consistent patterns of change in diatom and macrophyte communities in Spanish river basins affected by dam-induced flow alterations, suggesting common thresholds of response to altered hydrological attributes. The most impacted hydrological indices were related to the magnitude and duration of minimum flows, highlighting the importance of considering interrelationships between different hydrological attributes in flow management.
Article
Marine & Freshwater Biology
Lorena Gonzalez-Paz, Maria Comesana, Isabel Pardo, Jose Barquin, Alejandra Goldenberg-Vilar, Cristina Delgado
Summary: In the rivers of the Picos de Europa mountain range, the composition of diatom assemblages did not show significant changes over the past two decades, with decreases in water chemistry indicators. While diversity and evenness decreased over time, the overall ecological status in these minimally disturbed streams remained high, indicating the persistence of biodiversity.
Article
Environmental Sciences
Gonzalo Hernandez-Romero, Jose Manuel Alvarez-Martinez, Ignacio Perez-Silos, Ana Silio-Calzada, David R. Vieites, Jose Barquin
Summary: Human activities have significantly affected the function and services provided by ecosystems, particularly in mountainous landscapes. This study develops a remote sensing-based approach to identify areas for nature-based solutions that reduce the vulnerability of aquatic ecosystems to siltation. The results showcase the effectiveness of forest management in controlling erosion effects and maximizing sediment filtering.
Article
Environmental Sciences
Alexia Maria Gonzalez-Ferreras, Sheila Leal, Jose Barquin, Ana Almodovar
Summary: This study investigates the genetic consequences of altered connectivity of brown trout in the Deva-Cares catchment in northern Spain. The results show that isolation by impermeable barriers plays a significant role in determining the genetic structure, and most of the genetic groups have small effective population sizes.
Letter
Multidisciplinary Sciences
J. Barquin, L. Concostrina-Zubiri, I. Perez-Silos, G. Hernandez-Romero, A. Velez-Martin, J. M. Alvarez-Martinez
Article
Environmental Sciences
Jonathan F. Jupke, Sebastian Birk, Mario Alvarez-Cabria, Jukka Aroviita, Jose Barquin, Oscar Belmar, Nuria Bonada, Miguel Canedo-Arguelles, Gabriel Chiriac, Emilia Misikova Elexova, Christian K. Feld, M. Teresa Ferreira, Peter Haase, Kaisa-Leena Huttunen, Maria Lazaridou, Margita Lestakova, Marko Milisa, Timo Muotka, Riku Paavola, Piotr Panek, Petr Paril, Edwin T. H. M. Peeters, Marek Polasek, Leonard Sandin, Denes Schmera, Michal Straka, Philippe Usseglio-Polatera, Ralf B. Schaefer
Summary: Human activities have greatly impacted freshwater ecosystems globally, leading to a loss of biodiversity. Regulatory frameworks, such as the Water Framework Directive, have been developed to address this issue. However, this study found that the current typology systems, including the Broad River Types, do not effectively capture the differences in macroinvertebrate communities across Europe.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Francisco Javier Bravo-Cordoba, Juan Francisco Fuentes-Perez, Ana Garcia-Vega, Francisco Jesus Penas, Jose Barquin, Francisco Javier Sanz-Ronda
Summary: This study evaluated the effectiveness of a free-flow pool-weir-type fishway, which showed a 19% success rate for fish passage. Larger fish and fishway sections with lower power dissipation values were associated with better performance. The results suggest that this type of fishway may serve as an alternative for upstream passage of brown trout populations under certain circumstances.
Article
Biodiversity Conservation
Francisco J. Penas, Mario Alvarez-Cabria, Marta Sainz-Bariain, Maria Pilar Mata-Campo, Aaron Perez-Haase, Marc Ventura, Maria Jose Polo-Gomez, Carlos Alonso, Ignacio Granados, Mario Morellon, Carmen Perez-Martinez, Angel Rubio-Romero, Presentacion Carrillo, Carmen Zamora-Munoz, Maria Valladolid-Martin, Lluis Camarero, Esperanca Gacia, Mariangels Puig, Teresa Buchaca, Jose Barquin
Summary: Identifying and quantifying global change impacts on ecosystems is critical for effective conservation strategies. Harmonization of local monitoring programs is necessary to establish relevant comparisons at different scales. This study evaluated freshwater monitoring programs in International Long Term Ecological Research (ILTER) nodes and mountain National Parks, highlighting the lack of a common strategy and the need for coordinated monitoring efforts at national, continental, and global scales.
BIODIVERSITY AND CONSERVATION
(2023)
Article
Biodiversity Conservation
Cassia Rocha Pompeu, Francisco J. Penas, Jose Barquin
Summary: Freshwater ecosystems are highly threatened and effective conservation strategies should be based on understanding biodiversity patterns and drivers. In this study, the impact of environmental and dispersal-connectivity controls on freshwater diatom and fish communities was investigated. The results showed that spatial and environmental variations were key factors influencing these communities, and fish communities had stronger spatial dependency due to weaker dispersal ability. Broad-scale environmental characteristics were more predictive for fish assemblages compared to diatoms. Trait-based similarities were less affected by dispersal-connectivity effects than taxonomic datasets. This study highlights the importance of considering dispersal-connectivity processes in conservation and biomonitoring strategies.
BIODIVERSITY AND CONSERVATION
(2023)
Article
Marine & Freshwater Biology
Alvaro Javier Moyano Salcedo, Edurne Estevez, Humbert Salvado, Jose Barquin, Miguel Canedo-Arguelles
Summary: This study evaluates the impact of human activities on the temporal dynamics of electrical conductivity in Spanish rivers. The results show strong evidence that human activities disrupt the temporal dynamics of salinity, which could have significant effects on aquatic biodiversity. The study suggests incorporating this impact into monitoring and management plans.
Review
Ecology
Daniel Garcia, Susana Suarez-Seoane, Borja Jimenez-Alfaro, David alvarez, Pedro Alvarez-alvarez, Jose Manuel Alvarez-Martinez, Jose Barquin, Leonor Calvo, Juan Carlos Illera, Paola Laiolo, Ignacio Perez-Silos, Mario Quevedo, Jose Valentin Roces-Diaz, Cristina Santin
Summary: Passive rewilding refers to the spontaneous regeneration of ecosystems after human land use abandonment. It can lead to biodiversity recovery and ecosystem service restoration, but also cause declines in certain species and changes in disturbance regimes. This review integrates current knowledge on the ecological patterns and processes of passive rewilding in the Cantabrian Cordillera, providing a scientific basis for environmental management guidelines.
Article
Environmental Sciences
Diana Derepasko, Felix Witing, Francisco J. Penas, Jose Barquin, Martin Volk
Summary: The success of river water diversion planning decisions depends on uncertain environmental conditions. An adaptive water management framework is used to incorporate this uncertainty at all stages of management. This study demonstrates an exploratory modeling approach to assess river water availability for diversion under future environmental scenarios in a river basin in Northern Spain. The results highlight seasonal shifts and spatial heterogeneity of diversion volumes as the main challenges for future diversion management.
Review
Biodiversity Conservation
M. Fernandez-Martinez, J. Barquin, N. Bonada, M. Cantonati, C. Churro, J. Corbera, C. Delgado, M. Dulsat-Masvidal, G. Garcia, O. Margalef, R. Pascual, J. Penuelas, C. Preece, F. Sabater, H. Seiler, J. M. Zamora-Marin, E. Romero
Summary: This paper provides a synthesis of the main characteristics and functioning of Mediterranean spring ecosystems and highlights the main threats these ecosystems face, such as changes in climate patterns and increasing human pressures.
GLOBAL CHANGE BIOLOGY
(2023)