Article
Environmental Sciences
Natalie Corrales, Mariana Meerhoff, Dermot Antoniades
Summary: Studies have shown that glyphosate-based herbicides can have suppressive and stimulatory effects on diatoms in aquatic ecosystems, impacting community structure and diversity significantly.
ENVIRONMENTAL POLLUTION
(2021)
Article
Biodiversity Conservation
Christine L. Weilhoefer, Yangdong Pan
Summary: The relationship between diatom motility trait and fine sediment is complex, and the refinement of the motility trait can improve model performance. However, variables related to streambed fine sediments are not important predictors for diatom motility. Water quality, flow, and watershed characteristics are the most important environmental predictors for diatom motility. Stratifying sites by ecoregion or total phosphorus concentrations only result in slight improvements in model performance, but do not strengthen the relationship between diatom motility indices and sediment conditions.
ECOLOGICAL INDICATORS
(2022)
Article
Environmental Sciences
Antonija Kulas, Marija Gligora Udovic, Kalman Tapolczai, Petar Zutinic, Sandi Orlic, Zlatko Levkov
Summary: The study focused on diatom diversity in a karstic river, utilizing morphological and molecular approaches for biomonitoring assessment. While there were differences in community composition between the two methods, both approaches proved to be effective in evaluating ecological status.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Microbiology
Laura Kergoat, Pascale Besse-Hoggan, Martin Leremboure, Jeremie Beguet, Marion Devers, Fabrice Martin-Laurent, Matthieu Masson, Soizic Morin, Amelie Roinat, Stephane Pesce, Chloe Bonnineau
Summary: The study found that sulfonamides can alter microbial community structures and diversity at concentrations currently present in the environment. These compounds have persistent effects on the bacterial structure and can affect the diversity and viability of diatom communities. Different concentrations of sulfonamides have varying effects on diatom diversity and species richness, with exposed biofilms showing higher mortality rates of diatoms.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Marine & Freshwater Biology
Pablo Castillejo, Sofia Ortiz, Gabriela Jijon, Eduardo A. Lobo, Carla Heinrich, Isabel Ballesteros, Blanca Rios-Touma
Summary: Population growth and increasing production demands are threatening the diverse Andean freshwater ecosystems. Diatom and macroinvertebrate assemblages are commonly used bioindicators to assess water pollution, and their response and relationship in Andean rivers were evaluated in this research. The results showed that both bioindicators were sensitive to changes in land use and nutrients, with epilithic diatoms responding more to water chemistry and macroinvertebrates to fluvial habitat and land use changes. The use of both indices provided complementary information and is suitable for Andean streams.
Article
Environmental Sciences
Run Zhang, Yue Zhao, Jia Liu, Shengtao Yang, Liandong Jing
Summary: Periphyton plays an important role in ecological systems, even in environments with strong ultraviolet radiation. However, our understanding of periphyton under UV radiation is limited. This study investigated the physiological characteristics and bacterial community of immature and mature periphyton under UVB irradiation. The results showed that both immature and mature periphyton could adapt well to low-intensity UVB, but high-intensity UVB inhibited their growth and caused physiological damage. The bacterial community composition and function were also affected by UVB, with a stronger response observed in immature periphyton. This study provides valuable insights for improving the application of periphyton in UV radiation environments.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Environmental Sciences
Christopher T. Nietch, Nathan J. Smucker, Leslie Gains-Germain, Christopher P. Peck, Stefania Guglielmi, Susanna DeCelles, James Lazorchak, Brent Johnson, Paul Weaver
Summary: A stream mesocosm dose-response experiment was conducted to assess the impacts of wastewaters from mountaintop mining and deep well brines on stream ecology. Results showed that mountaintop mining wastewaters had a greater negative impact on secondary production and invertebrate taxa compared to deep well brines. However, overall, significant changes in stream ecology were not expected below a specific conductivity of 300 mu S/cm.
Article
Environmental Sciences
M. Megan Woller-Skar, Alexandra Locher, Ellen Audia, Evan W. Thomas
Summary: The substrate geology influences periphyton community assemblages in the Keweenaw Peninsula, and changes in water levels can impact the surface area of periphyton habitat, leading to shifts in species composition that could alter the structure of aquatic food webs and ecological processes.
Article
Marine & Freshwater Biology
Elaine C. R. Bartozek, Richard W. Lambrecht, Stefano Zorzal-Almeida, Marina R. Auricchio, Cleto K. Peres
Summary: This study investigated the factors influencing periphyton biomass and found that stream morphology, water dynamics, and agrochemicals were the main factors, while light availability and nutrients had a smaller impact.
Article
Environmental Sciences
Matteo Roncoroni, Davide Mancini, Floreana Miesen, Tom Mueller, Mattia Gianini, Boris Ouvry, Melanie Clemencon, Frederic Lardet, Tom J. Battin, Stuart N. Lane
Summary: The rapid recession of glaciers exposes potential phototrophic ecosystems and ecological succession, where periphyton play a role in modifying the physical environment. Periphyton can develop in stable areas with accessible water sources but struggle in unstable areas with harsh conditions. These factors greatly influence the role of periphyton in ecosystem succession.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Zhenfang Wang, Sicheng Yin, Qingchuan Chou, Dong Zhou, Erik Jeppesen, Liqing Wang, Wei Zhang
Summary: This study investigated the effects of oxytetracycline hydrochloride (OTC) on the community structure and ecological function of photoautotrophic epilithon and epipelon and its impact on nitrogen and phosphorus concentrations in the water column. The experiment showed that nitrogen and phosphorus concentrations increased rapidly during the initial days of exposure and then decreased. The growth and photosynthesis of epilithon were stimulated in the low concentration group but reduced in the medium and high concentration groups. The photosynthetic efficiency of epilithon was negatively correlated with nitrogen and phosphorus concentrations in the water column. The study also found that the community structure of epilithic algae showed rapid adaptability and resilience after 8 days of exposure.
ENVIRONMENTAL POLLUTION
(2022)
Article
Geography, Physical
Einer Sepulveda-Zuniga, Nora I. Maidana, Leonardo A. Villacis, Esteban A. Sagredo, Patricio I. Moreno
Summary: This study investigates the response of terrestrial and aquatic ecosystems in northwestern Patagonia to climatic and human influences during the last millennium. The findings suggest that human disturbances during historical times have exceeded the natural ranges of variability and resilience of these ecosystems, causing abrupt changes in biodiversity, species composition, and community structure.
QUATERNARY SCIENCE REVIEWS
(2022)
Article
Ecology
Maria Myrstener, Megan L. Fork, Ann-Kristin Bergstrom, Isolde Callisto Puts, Demian Hauptmann, Peter D. F. Isles, Ryan M. Burrows, Ryan A. Sponseller
Summary: Nutrient inputs in northern freshwaters have the potential to alter aquatic ecosystem functioning. Primary producer growth is sensitive to nutrient supply but also constrained by light and temperature. This study examined the differences in nutrient limitation status and drivers of algal biomass between lakes and streams in northern Sweden. The results showed that there are distinct patterns and responses to nutrient availability in different parts of aquatic networks.
Editorial Material
Biochemistry & Molecular Biology
Kimberlee Thamatrakoln
Summary: The new study shows that phosphorus-limited diatoms activate a rapid calcium-based signaling pathway upon phosphorus resupply, which enhances nitrogen uptake and assimilation, setting the stage for recovery from nutrient deprivation.
Article
Ecology
Samantha E. Walker, Gary Robbins, Ashley M. Helton, Beth A. Lawrence
Summary: A study was conducted to investigate the effects of deicing salts on exurban forested wetlands in southern New England. It was found that soil salinity decreased with distance from roads, while base cation concentrations increased. Despite changes in plant nutrient uptake near roads, there were no detectable differences in plant community composition in response to road salt-induced soil chemistry gradients in the field.
Article
Biodiversity Conservation
Yongcui Lan, Jinliang Wang, Qianwei Liu, Fang Liu, Lanfang Liu, Jie Li, Mengjia Luo
Summary: This study focuses on the five major plateau lake basins in central Yunnan, China, and constructs an ecological security pattern using the source-resistance surface-corridor-pinch point framework. The study simulates land use/cover change in the region and identifies early warning regions where future urban expansion poses a threat to current ecological source areas and corridors.
ECOLOGICAL INDICATORS
(2024)
Article
Biodiversity Conservation
Pingping Huang, Feng Zhao, Bailing Zhou, Kuidong Xu
Summary: This study investigates the distribution of benthic microeukaryotes in the China Seas and finds that they can stride over the ecological barrier of 32 degrees N. The study also highlights the significant influence of depth, temperature, and latitude on communities in the China Seas.
ECOLOGICAL INDICATORS
(2024)
Article
Biodiversity Conservation
Federico Morelli, Yanina Benedetti, Jesse Stanford, Leszek Jerzak, Piotr Tryjanowski, Paolo Perna, Riccardo Santolini
Summary: Species distribution models (SDMs) are numerical tools used for predicting species' spatial distribution. This study found that ecological characteristics, such as habitat specialization, play a role in improving the accuracy of SDMs.
ECOLOGICAL INDICATORS
(2024)
Article
Biodiversity Conservation
Xiaoxuan Wu, Hang Liu, Wei Liu
Summary: Global climate change, urbanization, and economic development have increased the need for sustainable human development, urban ecological governance, and low-carbon energy transformation. This study analyzes the green ecological transition in Chengdu based on panel data from 2010 to 2020, exploring its spatiotemporal evolution and key factors. The results show an overall upward trend in Chengdu's green ecological development and positive spatial autocorrelation in certain districts.
ECOLOGICAL INDICATORS
(2024)
Article
Biodiversity Conservation
Castaldi Simona, Formicola Nicola, Mastrocicco Micol, Morales Rodriguez Carmen, Morelli Raffaella, Prodorutti Daniele, Vannini Andrea, Zanzotti Roberto
Summary: Sustainable agricultural practices are increasingly important for global and national environmental policies and economy. This study compared the sustainability of grape production under integrated and organic management using multiple indicators. The results showed that organic management was more beneficial for most environmental aspects of the agroecosystem compared to integrated management, without affecting grape yield.
ECOLOGICAL INDICATORS
(2024)
Article
Biodiversity Conservation
Gaia Vaglio Laurin, Alexander Cotrina-Sanchez, Luca Belelli-Marchesini, Enrico Tomelleri, Giovanna Battipaglia, Claudia Cocozza, Francesco Niccoli, Jerzy Piotr Kabala, Damiano Gianelle, Loris Vescovo, Luca Da Ros, Riccardo Valentini
Summary: Phenology monitoring is important for understanding forest functioning and climate impacts. This research compares the phenological behavior of European beech forests using Tree-Talker (TT+) and Sentinel 2 satellite data. The study finds differences in the information derived by the two sensor types, particularly in terms of season length, phenology changepoints, and leaf period variability. TT+ with its higher temporal resolution demonstrates precision in capturing the phenological changepoints, especially when satellite image availability is limited.
ECOLOGICAL INDICATORS
(2024)
Article
Biodiversity Conservation
Huanhuan Pan, Ziqiang Du, Zhitao Wu, Hong Zhang, Keming Ma
Summary: The land use and cover changes resulting from coal mining activities and ecological restoration have had a significant impact on ecosystem services in mining areas. This study investigates the relationship between ecosystem services and land use intensity in coal mining areas, emphasizing the importance of understanding this interdependence for balanced human-land system development. The research examines the evolving relationship across different reclamation stages in Shanxi, China, using a coupling coordination degree model. The findings suggest the need for timely and judicious reclamation of coalfields, considering the land's bearing capacity.
ECOLOGICAL INDICATORS
(2024)
Article
Biodiversity Conservation
Jingjuan He, Yijun Shi, Lihua Xu, Zhangwei Lu, Mao Feng
Summary: This study examines the spatial interplay between changes in the blue-green spatial distribution and modifications in land surface temperature grades in Shanghai. The findings reveal that the transformation of the blue-green spatial pattern differs between different sectors of the city, and the impact on the thermal environment varies spatially.
ECOLOGICAL INDICATORS
(2024)
Article
Biodiversity Conservation
Yi Xu, Di Zhang, Junqiang Lin, Qidong Peng, Xiaohui Lei, Tiantian Jin, Jia Wang, Ruifang Yuan
Summary: This study analyzed the response relationship between phytoplankton growth and water environmental parameters in the Middle Route of the South-to-North Water Diversion Project in China using long-term monitoring data and machine learning models. The results revealed the differences between monitoring sites and identified the key parameters that affect phytoplankton growth.
ECOLOGICAL INDICATORS
(2024)