Article
Engineering, Marine
Diwakar Prakash, Chandra Bhushan Tiwary, Ram Kumar
Summary: This study investigated the ecological dynamics in the downstream of Hooghly River in India. The results showed that the water quality and abundance of planktonic organisms were higher in the downstream compared to the upstream. The study highlights the importance of river continuum, land-driven lateral discharge, and seawater intrusion in shaping the community structure of aquatic ecosystems.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Microbiology
Rebecca E. Garner, Susanne A. Kraemer, Vera E. Onana, Yannick Huot, Irene Gregory-Eaves, David A. Walsh
Summary: Protists play important roles in freshwater lakes, but their diversity is challenged by environmental heterogeneity. This study assessed protist diversity in Canadian lakes and found that it is influenced by lake trophic state, agricultural activity, and watershed soil characteristics. The findings highlight the vulnerability of lake ecosystems to land use changes and the importance of assessing terrestrial interfaces for understanding freshwater ecosystem dynamics.
Article
Environmental Sciences
Konstantinos Stefanidis, George Varlas, George Papaioannou, Anastasios Papadopoulos, Elias Dimitriou
Summary: This study utilized data from Copernicus Lake Water products, Hydrological Predictions for the Environment (HYPE), and ERA5-Land data repositories to create a large longitudinal dataset for 22 European lakes. The analysis revealed seasonal variations in water turbidity and trophic state index (TSI), and identified the influence of environmental factors on these parameters.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Ecology
Roohollah Noori, R. Iestyn Woolway, Changhyun Jun, Sayed M. Bateni, Danial Naderian, Sadegh Partani, Mohsen Maghrebi, Merja Pulkkanen
Summary: This study analyzed the changes in lake surface water temperature (LSWT), lake deepwater temperature (LDWT), and lake volumetrically weighted mean temperature (LVWMT) of Lake Konnevesi, Finland from 1984 to 2021. The results showed a significant increase in LSWT and LVWMT, while LDWT remained unchanged. The analysis also revealed that the inter-annual variability in LSWT and LVWMT correlated with the upward trends of summer mean air temperature and solar radiation.
ECOLOGICAL INFORMATICS
(2023)
Article
Multidisciplinary Sciences
John K. Pearman, Georgia Thomson-Laing, Lucy Thompson, Sean Waters, Marcus J. Vandergoes, Jamie D. Howarth, Ian C. Duggan, Ian D. Hogg, Susanna A. Wood
Summary: Lakes provide habitat for a diverse array of species and offer ecosystem services, but are highly vulnerable to adverse actions both directly impacting the lakes and from the surrounding environment. This study in New Zealand sampled different biotic components in 34 lakes and used metabarcoding to investigate bacteria and eukaryotes. The results showed that deterministic processes dominated the assembly of lake communities, with variable and homogeneous selection playing different roles in different biotic components.
Article
Limnology
Shin-Ichiro S. Matsuzaki, Richard C. Lathrop, Stephen R. Carpenter, Jake R. Walsh, M. Jake Vander Zanden, Mark R. Gahler, Emily H. Stanley
Summary: This study found that climate change and food web structure can impact the significant clear-water phase in lakes, with effects varying among different metrics. Higher water temperature leads to earlier start and peak dates of the clear-water phase, while the proportion of D. pulicaria affects all clear-water phase metrics, and high Bythotrephes density delays the start date of the clear-water phase.
LIMNOLOGY AND OCEANOGRAPHY
(2021)
Article
Limnology
Johanna Laakso, Tom Jilbert, Timo Saarinen
Summary: This study investigated the early diagenesis of phosphorus in three lakes in Southwest Finland. The results showed that the nutrient status and sediment biogeochemical environment have significant impacts on phosphorus burial, and the speciation and dominant processes controlling phosphorus burial vary among different lakes.
Article
Engineering, Environmental
Konstantinos Stefanidis, George Varlas, Aikaterini Vourka, Anastasios Papadopoulos, Elias Dimitriou
Summary: Understanding the impact of climatic variables on eutrophication in lakes is crucial for effective management, but predicting phytoplankton biomass is challenging. Models using climate reanalysis data and in-situ measurements showed promising predictive performance for chlorophyll-a, with boosted regression trees and GAMLSS outperforming models for phytoplankton biomass.
Article
Microbiology
Angia Sriram Pradeep Ram, Telesphore Sime-Ngando
Summary: The impact of viruses on bacterial carbon metabolism in aquatic environments is limited. A study on freshwater systems showed that eutrophic lakes had higher microbial abundances (viruses and bacteria) compared to non-eutrophic lakes, as well as higher bacterial production and viral lytic infection. Viruses had an antagonistic impact on bacterial growth efficiency in eutrophic lakes through selective lysis, while in non-eutrophic lakes, viruses exerted a synergistic influence on carbon metabolism through substrate release.
Article
Computer Science, Information Systems
Nikhil Pachauri, Chang Wook Ahn
Summary: This study proposes a predictive model based on a generalized additive model for the electrical power prediction of a combined cycle power plant (CCPP) at full load. The results demonstrate that the model outperforms other commonly used models, improving the reliability and financial performance of the power plant.
Article
Ecology
Mark H. Hancock, Daniela Klein, Robert Hughes, Paul Stagg, Paul Byrne, Trevor D. Smith, Alison MacLennan, Paul P. J. Gaffney, Colin W. Bean
Summary: Reducing trout biomass and reintroducing traditional angling in Scotland's Flow Country can increase macro-invertebrate groups and usage by invertivorous waterbirds.
Article
Environmental Sciences
Elizabeth Mckay, Sergei Katsev, Sairah Malkin, Ted Ozersky
Summary: This study investigated the freshwater Thioploca in the Great Lakes and found that, even in low-sulfate environments, Thioploca can attain biomass comparable to marine sediments. The study also indicates that the distribution and abundance of Thioploca in freshwater sediments are influenced by environmental conditions.
JOURNAL OF GREAT LAKES RESEARCH
(2023)
Article
Ecology
Clara E. Calatayud Pavia, Francisco Mascareno Suarez, Jacopo Brunetti, Miguel Eliceche, Kathryn A. Ayres
Summary: This study used citizen science to investigate shark species in the coastal areas of Los Cabos off the Baja California Peninsula, Mexico. It found that the presence of short-fin mako sharks, smooth hammerhead sharks, and silky sharks is closely related to environmental factors such as sea surface temperature, wind speed, sampling site, and year. The involvement of a tourism operator allowed for public participation in scientific research and provided a platform for data collection. This monitoring program will continue to provide valuable baseline data for the local artisanal fisheries that target sharks in the area.
ENVIRONMENTAL BIOLOGY OF FISHES
(2023)
Article
Environmental Sciences
Jari Hanninen, Katja Makinen, Klaus Nordhausen, Jussi Laaksonlaita, Olli Loisa, Joni Virta
Summary: In this study, a forecasting tool for predicting the state of eutrophication in the Archipelago Sea was developed using a Generalized Additive Mixed Model (GAMM) fitted to marine environmental monitoring data. The tool utilizes the Seili-index, derived from the data collected by an automated profiling buoy, to forecast the chlorophyll-alpha (chl-a) concentration in the seawater. The accuracy of the predictions was validated using a separate 2019 data set, demonstrating the tool's effectiveness in predicting chl-a levels, particularly in the upper water layer. The study also applied GAMMs to predict cyanobacteria blooms based on temperature and wind conditions, showing promising results for short-term predictions. The use of automated monitoring data and the GAMM model in assessing natural resource management and pollution risks is discussed.
ENVIRONMENTAL MODELING & ASSESSMENT
(2022)
Article
Ecology
V. A. Gabyshev, S. I. Sidelev, E. N. Chernova, O. I. Gabysheva, I. V. Voronov, Z. A. Zhakovskaya
Summary: The first data on cyanobacterial toxins distribution and cyanotoxin producers determination in lakes in Yakutia have been obtained. The lakes are characterized by high concentrations of nitrogen, phosphorus, chlorophyll a, and organic matter. Water blooms were observed in some lakes during the summer. Eight species of potentially toxigenic cyanobacteria were found in phytoplankton. Microcystis and Dolichospermum were identified as the main producers of microcystins. Multiple structural variants of microcystins were identified in lake plankton. The potential hazard of cyanobacteria toxins to human health should be further studied.
CONTEMPORARY PROBLEMS OF ECOLOGY
(2023)
Article
Ecology
Sophia I. Passy, Joseph L. Mruzek, William R. Budnick, Thibault Leboucher, Aurelien Jamoneau, Jonathan M. Chase, Janne Soininen, Eric R. Sokol, Juliette Tison-Rosebery, Annika Vilmi, Jianjun Wang, Chad A. Larson
Summary: This study is the first spatially explicit examination of the species-area relationship (SAR) in subcontinental freshwater ecosystems, focusing on the shape and origins of the SAR across different organismal groups (diatoms, insects, and fish) with varying body size and dispersal capacity. The results show that scale and species group are the most important predictors of the SAR shape, while climatic factors and metacommunity properties are secondary predictors. Different models are applicable to different organismal groups, scales, and metacommunity properties. Therefore, future research should investigate how climate change affects metacommunity properties and alters the SAR.
Article
Ecology
Siwen He, Beixin Wang, Kai Chen, Janne Soininen
Summary: Metacommunity structure is influenced by both deterministic and stochastic factors, with their importance varying depending on environmental and trait heterogeneity. Environmental filtering is most strongly associated with regions of moderate environmental heterogeneity and high trait heterogeneity. Associations with stochastic factors are more variable and difficult to predict.
FRESHWATER BIOLOGY
(2023)
Article
Ecology
Janne Soininen
Summary: This study aimed to investigate the variation of stream diatom community assembly processes at different spatial scales. It was found that environmental filtering dominated the assembly of diatom communities, especially at small scales, while stochastic factors such as random dispersal and ecological drift became more influential at larger scales.
FRESHWATER BIOLOGY
(2023)
Article
Multidisciplinary Sciences
Mika Rantanen, Matti Kamarainen, Pekka Niittynen, Gareth K. K. Phoenix, Jonathan Lenoir, Ilya Maclean, Miska Luoto, Juha Aalto
Summary: The Arctic is experiencing the fastest rate of warming among all regions on Earth, leading to increased occurrences of extreme weather events and disturbances to Arctic ecosystems. In order to investigate the changes in Arctic terrestrial ecosystems, a new dataset called ARCLIM has been introduced. This dataset includes bioclimatic indices calculated from hourly ERA5-Land reanalysis data for the northern high-latitude land areas > 45 degrees N, covering the period of 1950-2021. The dataset provides comprehensive information on extreme weather events, climate variability, and the changing bioclimate of the Arctic.
Article
Biodiversity Conservation
Tuuli Rissanen, Pekka Niittynen, Janne Soininen, Anna-Maria Virkkala, Miska Luoto
Summary: The relationships between key environmental drivers and plant functional traits in the tundra are largely consistent across spatial scales. Summer temperature and snow persistence are the most important variables explaining community trait composition. Snow has significant impacts on seed mass, specific leaf area, and vegetation height.
Article
Ecology
Bjoern Kroger, Geza B. Selmeczy, Peter Casper, Janne Soininen, Judit Padisak
Summary: Climate warming and legacy phosphorus in sediments are counteracting efforts to prevent eutrophication of freshwater lakes and reservoirs. Lake Stechlin in Germany shows that even when external phosphorus sources are blocked, legacy phosphorus from sediments can still drive eutrophication. The study highlights the challenges of managing freshwater ecosystems in the context of climate warming.
FRESHWATER BIOLOGY
(2023)
Article
Ecology
Heidi K. Mod, Tuuli Rissanen, Pekka Niittynen, Janne Soininen, Miska Luoto
Summary: By assessing the relationships between species occupancy and niche metrics, as well as trait variability, at different spatial scales in four study areas north of the Arctic Circle, this study found that species' traits were more important at fine scales, while abiotic filtering played a larger role at broad scales. These findings highlight the scale-dependency of factors driving species occupancy.
JOURNAL OF BIOGEOGRAPHY
(2023)
Article
Environmental Sciences
Jonathan F. Jupke, Sebastian Birk, Apostolos Apostolou, Jukka Aroviita, Annette Baattrup-Pedersen, Peter Balazi, Libuse Baresova, Saul Blancoi, Maria Borrego-Ramos, Herman van Dam, Elias Dimitriou, Christian K. Feld, Maria Teresa Ferreira, Gana Gecheva, Joan Goma, Nikola Hanzek, Ida Marie Haslev, Tsvetelina Isheva, Aurelien Jamoneau, Jenny Jyrkaenkallio-Mikkola, Maria Kahlert, Ioannis Karaouzas, Satu Maaria Karjalainen, Adriana Olenici, Piotr Panek, Petr Paril, Edwin T. H. M. Peeters, Marek Polasek, Didier Pont, Audrone Pumputyte, Leonard Sandin, Lucia Sochuliakova, Janne Soininen, Igor Stankovic, Michal Straka, Mirela Susnjara, Tapio Sutela, Juliette Tison-Rosebery, Marija Gligora Udovic, Michiel Verhofstad, Petar Zutinic, Ralf B. Schaefer
Summary: Typology systems used in ecology fail to accurately classify site groups with distinct biological communities. Combining segment-based and region-based typology systems might improve their utility for freshwater biota.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Microbiology
Zhenyu Huang, Baozhu Pan, Janne Soininen, Xinyuan Liu, Yiming Hou, Xing Liu
Summary: Uncovering the mechanisms underlying phytoplankton community assembly remains a major challenge in freshwater ecology. In Tibetan floodplain ecosystems, the roles of environmental filtering and spatial processes in shaping phytoplankton metacommunity under various hydrological conditions are still unclear. This study compared the spatiotemporal patterns and assembly processes of phytoplankton communities in a river-oxbow lake system during non-flood and flood periods. The results showed significant seasonal and habitat variations in phytoplankton communities, with lower density, biomass, and alpha diversity during the flood period. Habitat differences were less pronounced during the flood period, potentially due to increased hydrological connectivity.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Ecology
Tuuli Rissanen, Aino Aalto, Heli Kainulainen, Olli Kauppi, Pekka Niittynen, Janne Soininen, Miska Luoto
Summary: This study examined the relationship between plant diversity and environmental factors in northern Norway. The results revealed that snow and fluvial conditions were strongly linked to taxonomic, functional, and phylogenetic plant diversity in tundra ecosystems. The study emphasized the importance of investigating multiple facets of biodiversity and addressing local hydrological conditions in understanding vegetation patterns.
Article
Environmental Sciences
Pieter Sanczuk, Karen De Pauw, Emiel De Lombaerde, Miska Luoto, Camille Meeussen, Sanne Govaert, Thomas Vanneste, Leen Depauw, Jorg Brunet, Sara A. O. Cousins, Cristina Gasperini, Per-Ola Hedwall, Giovanni Iacopetti, Jonathan Lenoir, Jan Plue, Federico Selvi, Fabien Spicher, Jaime Uria-Diez, Kris Verheyen, Pieter Vangansbeke, Pieter De Frenne
Summary: Macroclimatic changes have global impacts on ecosystems. Forest floors under dense tree canopies buffer the impacts of macroclimate change on forest biodiversity, while canopy opening exacerbates these impacts. A cross-continental transplant experiment was conducted to understand the role of forest microclimates in shaping future plant distributions.
NATURE CLIMATE CHANGE
(2023)
Article
Ecology
Benjamin Weigel, Caio Graco-Roza, Jenni Hultman, Virpi Pajunen, Anette Teittinen, Maria Kuzmina, Evgeny V. V. Zakharov, Janne Soininen, Otso Ovaskainen
Summary: Understanding how species respond to land-use change is crucial for the expansion of agricultural areas and increasing pressures from land-use. Microbial communities display the fastest responses to environmental change and provide key ecosystem functions. However, regional land-use effects on local environmental conditions are often underestimated, highlighting the importance of considering these effects when studying community responses.
ISME COMMUNICATIONS
(2023)
Article
Geography, Physical
Oona Leppiniemi, Olli Karjalainen, Juha Aalto, Miska Luoto, Jan Hjort
Summary: This study models the suitable environments for palsas and peat plateaus in the Northern Hemisphere permafrost region and assesses the impact of climate change on these landforms. The research finds that climate change will significantly reduce the suitable environments and have important implications for greenhouse gas emissions in the circumpolar region.
Article
Biodiversity Conservation
Yuan Xu, Xinyi Chen, Caio Graco-Roza, Janne Soininen
Summary: This study found that the assembly processes of bacterial communities are scale-dependent, with deterministic processes dominating at the local scale and dispersal limitation dominating at regional and subcontinental scales. In contrast, fungal community assembly is consistently driven by drift across all spatial scales. These findings highlight the importance of adopting a multi-scale approach to understanding the complex spatial patterns of microbial communities.