Article
Environmental Sciences
Taylor R. Stewart, Mark R. Vinson, Jason D. Stockwell
Summary: Changes in winter conditions have been observed in the Laurentian Great Lakes for more than 20 years, with decreased ice coverage and duration being noted. Experimental results show significant differences in cisco embryo responses to different light treatments, providing a step towards better understanding the high variability observed in coregonine recruitment.
JOURNAL OF GREAT LAKES RESEARCH
(2021)
Article
Ecology
Pieter A. Arnold, Shuo Wang, Alexandra A. Catling, Loeske E. B. Kruuk, Adrienne B. Nicotra
Summary: Climate change presents challenges for plants due to increased temperature exposure. Phenotypic plasticity plays an important role in plant responses. Different traits show different responses to temperature. Temperature affects plasticity in germination, leaf, physiology, and reproductive traits, and plasticity variation among family lines is related to fitness.
FUNCTIONAL ECOLOGY
(2022)
Article
Ecology
Jenna E. Pruett, Daniel A. Warner
Summary: Phenotypic variation within populations is influenced by environmental factors like plasticity and natural selection, which can impact fitness. Plastic responses during early development play a crucial role in shaping fitness across different life stages. The study showed that developmental temperature affects offspring morphology and survival, with differences between embryo and hatchling stages, highlighting the importance of temporal thermal heterogeneity in influencing survival outcomes.
FUNCTIONAL ECOLOGY
(2021)
Article
Biology
Grace S. Gleason, Katherine Starr, Thomas J. Sanger, Alex R. Gunderson
Summary: Adaptive thermal tolerance plasticity can reduce the negative effects of warming. In this study, we tested the capacity for heat hardening in lizard embryos and found that hardened embryos had greater survival after lethal heat exposure. However, heat pre-treatment led to an increase in embryo heart rates, indicating an energetic cost. These results support the existence of adaptive thermal tolerance plasticity in embryos and emphasize the associated costs. The findings highlight the importance of considering thermal tolerance plasticity as a mechanism for embryo response to warming.
Article
Biodiversity Conservation
R. Kathleen Callery, E. Sarah Schulwitz, R. Anjolene Hunt, M. Jason Winiarski, J. W. Christopher McClure, A. Richard Fischer, A. Julie Heath
Summary: Optimal reproductive performance of birds occurs when they time reproduction with peak food availability. Deviation from optimal timing can affect productivity, but birds can modify incubation behavior to mitigate some of the effects. This study focused on American kestrels and found that nesting timing impacts their productivity, with differing effects across regions. Early onset of male incubation was associated with increased hatching asynchrony. Overall, kestrels are likely to be sensitive to climate-driven changes in growing seasons and phenological mismatch.
GLOBAL ECOLOGY AND CONSERVATION
(2022)
Review
Physiology
Alexander G. Little, Frank Seebacher
Summary: This review introduces the importance of physiological performance curves across phylogenetic and functional boundaries, highlighting their dynamic nature and potential shifts in response to environmental pressures and programming. Individual differences in performance curves can have cascading effects on higher levels of biological organization.
FRONTIERS IN PHYSIOLOGY
(2021)
Article
Ecology
Mats Ittonen, Alexandra Hagelin, Christer Wiklund, Karl Gotthard
Summary: Daylength affects diapause induction in butterflies, but northern populations are able to adapt rapidly to their local daylength conditions during range expansions.
Article
Geosciences, Multidisciplinary
Daniele Tonina, James A. McKean, Daniel Isaak, Rohan M. Benjankar, Chunling Tang, Qiuwen Chen
Summary: Climate change threatens biodiversity, particularly the habitats of cold-water fishes like Chinook salmon. The decline in summer flow caused by climate change leads to reductions in habitat area and connectivity for these fishes, posing risks to population abundance and persistence.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Ecology
Lumir Gvozdik, David S. Boukal
Summary: Predation is a key ecological interaction affected by climate warming, with modifications in predator-prey dynamics observed due to predator-induced plasticity of prey locomotor activity. However, this effect has minor influence on the joint predator-prey behavioural response. The study suggests that within-population variation in prey locomotor activity can buffer the impact of body temperature and predation risk cues on predator-prey interactions.
JOURNAL OF ANIMAL ECOLOGY
(2021)
Article
Biophysics
Hasan Karakelle, Guelsah Ozcalisan, Fatih Sahin, Dogan Narinc
Summary: The study investigated the effects of cold acclimation during the incubation period on various traits of Japanese quail embryos. It was found that cold exposure had no adverse effects on hatchability, livability, developmental stability, fear response, live weight, and slaughter-carcass characteristics. However, it negatively affected the quality of the chicks. The growth curve of the embryos exposed to cold exhibited changes, with compensatory growth occurring in the early posthatch period.
INTERNATIONAL JOURNAL OF BIOMETEOROLOGY
(2023)
Review
Environmental Sciences
S. Andrefouet, O. Bionaz
Summary: This study reviews the use of MCRMP products in 62 representative studies since 2004, showcasing their application in coral reef inventories, conservation planning, biodiversity mapping, and connectivity and climate change modeling. The products have also been utilized for mapping other ecosystems, highlighting their versatility and potential impact in global-scale mapping projects.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Biodiversity Conservation
Natalie Pilakouta, Patrick J. O'Donnell, Amelie Crespel, Marie Levet, Marion Claireaux, Joseph L. Humble, Bjarni K. Kristjansson, Skuli Skulason, Jan Lindstrom, Neil B. Metcalfe, Shaun S. Killen, Kevin J. Parsons
Summary: The costs and benefits of social behavior in animals are influenced by environmental conditions, particularly temperature. Temperature affects food availability, predator abundance, and physiological traits related to social behavior. Understanding the effects of temperature on sociality is important in the context of climate change.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Biodiversity Conservation
Ellen P. Robertson, Evan P. Tanner, R. Dwayne Elmore, Samuel D. Fuhlendorf, Jonathan D. Mays, Jennifer Knutson, John R. Weir, Scott R. Loss
Summary: As the effects of climate change intensify, there is a growing need to understand the thermal properties of landscapes and their influence on wildlife. Vegetation structure and composition are key thermal properties of landscapes, which can be altered by management approaches, potentially affecting wildlife thermoregulation. Consideration of spatial scale is important in understanding how management practices impact the thermal properties of landscapes relevant to wildlife.
GLOBAL CHANGE BIOLOGY
(2022)
Article
Biology
Michaela Hau, Caroline Deimel, Maria Moiron
Summary: Fluctuations in environmental temperature have an impact on the plasticity of vertebrate behavior and physiology, particularly related to glucocorticoid hormone responses. This study focused on free-living individuals of wild great tits to examine the individual variation in glucocorticoid plasticity in response to environmental temperature changes. The results show that individuals differ significantly in their plastic responses to temperature gradients, indicating the potential for coping with temperature fluctuations through plastic or evolutionary changes.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2022)
Article
Water Resources
J. C. White, K. Khamis, S. Dugdale, F. L. Jackson, I. A. Malcolm, S. Krause, D. M. Hannah
Summary: High river water temperature extremes during drought conditions have significant implications for freshwater ecosystem health and river management practices. The mechanisms and factors controlling water temperature dynamics during droughts are still poorly understood. This study reviews these mechanisms using the United Kingdom as a case study and highlights critical future research questions that need to be addressed.
HYDROLOGICAL PROCESSES
(2023)
Article
Biodiversity Conservation
Chloe Vagnon, Franck Cattaneo, Jean Guillard, Victor Frossard
Summary: Identifying the trophic attributes of cooccurring invaders is essential for understanding and managing their impacts. This study used an allometric niche model to predict the trophic attributes of two invasive species in Lake Bourget, France. Both invaders were found to compete for resources and exert predatory pressure on resident species, highlighting the need for management actions.
BIOLOGICAL INVASIONS
(2022)
Article
Fisheries
Arthur Blanluet, Sven Gastauer, Franck Cattaneo, Chloe Goulon, David Grimardias, Jean Guillard
Summary: With the increasing demand for hydroelectric energy, there is a significant rise in the number of reservoirs worldwide. These reservoirs, constructed on uncut forests, often have many trees submerged in the water, hindering fish assessments. To address this issue, researchers have developed a method to discriminate fish schools from immersed trees in reservoirs.
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2022)
Article
Fisheries
Chloe Vagnon, Simon Bazin, Franck Cattaneo, Chloe Goulon, Jean Guillard, Victor Frossard
Summary: The European catfish (Silurus glanis) in large peri-alpine lakes primarily relies on littoral resources but also consumes prey from pelagic and deep benthic habitats. Individual diet variations are mostly reflected in stomach contents, supporting opportunistic trophic behavior. Body size has minimal impact on the catfish's diet, indicating that ontogeny does not strongly shape its feeding habits. This study highlights the feeding plasticity of the European catfish and its ability to exploit resources from different habitats in peri-alpine lakes.
ECOLOGY OF FRESHWATER FISH
(2022)
Article
Fisheries
Clement Rautureau, Chloe Goulon, Jean Guillard
Summary: Fishery acoustics is a reliable method commonly used in scientific studies and monitoring surveys. The EK60 and EK80 echo-sounders from Simrad have been widely used in Europe. This study tested the hypothesis that there were no statistically significant differences in target strength (TS) recorded by the EK60 and EK80 systems. While some differences were found, they were not large enough to affect fish density for management or research purposes. Therefore, switching from the EK60 to the EK80 for lake ecosystem research and monitoring is feasible.
FISHERIES RESEARCH
(2022)
Article
Marine & Freshwater Biology
Timo J. Marjomaki, Linda Mustajarvi, Jesse Manttari, Mikko Kiljunen, Juha Karjalainen
Summary: The study examined polymorphism in behaviour, morphology, and stable isotope signatures of burbot from Lake Southern Konnevesi, Finland, Europe. It found differences in spawning behaviour, morphology, and diet between two morphs of burbot, with variations in body weight, head width, and length-at-age. This study is the first to suggest polymorphism in burbot populations from a lake in Eurasia.
Article
Environmental Sciences
Patrice Brehmer, Marc Soria, Viviane David, Pablo Ivan Caballero Pinzon, Pascal Bach, Ndague Diogoul, Jean Guillard
Summary: High-resolution multibeam sonar can estimate the movements of pelagic fish schools at short range. By calculating a Straightness Index, we can quantify the proportion of actively migrating fish schools compared to those residing in lagoon channels. This enhances our understanding of fish school displacements and migration processes, which are crucial for understanding ecosystem functioning.
Article
Fisheries
Chloe Vagnon, Franck Cattaneo, Chloe Goulon, Jean Guillard, Victor Frossard
Summary: This study assessed the vulnerability of whitefish to European catfish invasion in peri-Alpine lakes and found that the catfish effectively consumed whitefish, with young individuals being the most vulnerable. These findings suggest that the European catfish may pose a growing threat to whitefish in the context of global change.
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2022)
Article
Biodiversity Conservation
Jani Heino, Jorge Garcia Giron, Heikki Hamalainen, Seppo Hellsten, Jari Ilmonen, Juha Karjalainen, Teemu Makinen, Kristiina Nyholm, Janne Ropponen, Antti Takolander, Kimmo T. Tolonen
Summary: This study proposes a novel approach to conservation planning that takes into account taxonomic uniqueness, functional uniqueness, and environmental uniqueness. The results demonstrate that certain sites can help protect a significant portion of the ecological uniqueness of a lake. This approach can be applied to different ecosystems and spatial scales.
DIVERSITY AND DISTRIBUTIONS
(2022)
Article
Marine & Freshwater Biology
Emilie Realis-Doyelle, Nathalie Cottin, Martin Daufresne, Emmanuel Naffrechoux, Stephane Reynaud, Jean Guillard
Summary: This study aimed to investigate the effects of PCB pollution on the Arctic char population and explore how increased water temperature could magnify the effects of PCB. The results showed that co-exposure to increased temperature and maternal PCB contamination influenced biodemographic, physiological, and behavioural parameters, with the effects highly dependent on the developmental stage. Based on the pace-of-life syndrome theory, a continuum of life traits that may reflect potential physiological and behavioural modifications in response to these concurrent stressors is highlighted.
AQUATIC TOXICOLOGY
(2023)
Article
Ecology
Salla A. A. Ahonen, Jukka Seppala, Juha S. S. Karjalainen, Jonna Kuha, Anssi V. V. Vahatalo
Summary: The depth of the mixed layer is crucial for phytoplankton's nutrient and light availability in stratified waterbodies. Climate change affects surface waters and modifies the physical structure, including the mixed layer, but its impact on phytoplankton biomass is not well understood. To investigate the response of phytoplankton biomass to the mixed layer depth, light availability, and meteorological forcing, we studied a boreal lake during the early summer stratification period. We found that phytoplankton biomass increased with deepening mixed layer driven by high wind speeds and low air temperature relative to the mixed layer temperature, while shallow mixed layer due to heatwave conditions and low wind speed reduced the biomass. Moderate light availability led to the highest phytoplankton biomass, while the highest light availability resulted in low biomass. Our study highlights the importance of wind speed and air temperature relative to water temperature in controlling mixed layer depth and subsequent phytoplankton biomass during the early summer stratification period. Increasing air temperature and declining wind speeds have the potential to reduce phytoplankton biomass in non-eutrophic lakes with sufficient light availability.
FRESHWATER BIOLOGY
(2023)
Article
Environmental Sciences
Juha Karjalainen, Xiaoxuan Hu, Mikko Makinen, Anna Karjalainen, Johanna Jarvisto, Kaisa Jarvenpaa, Minna Sepponen, Matti T. Leppanen
Summary: Elevated concentrations of sulfate in waterways, caused by anthropogenic activities, can harm aquatic life in freshwaters. This study conducted chronic and acute sulfate toxicity tests with aquatic organisms from 10 families, providing valuable data on soft freshwater conditions. The results identified the most sensitive species to sulfate and derived hazardous concentrations for soft freshwaters. The study found that most tested organisms could tolerate high sulfate concentrations, but harmful effects were observed on the reproduction of Daphnia longispina and the growth of Lymnaea stagnalis at specific sulfate levels.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Article
Limnology
Fabien Bourinet, Orlane Anneville, Hilaire Drouineau, Chloe Goulon, Jean Guillard, Alexandre Richard
Summary: This study investigates synchronic variations in European whitefish populations in five peri-alpine lakes and finds that the synchrony is likely driven by a combination of interacting environmental and anthropogenic factors rather than a single common variable.
JOURNAL OF LIMNOLOGY
(2023)
Article
Multidisciplinary Sciences
Azenor Le Quinio, Eric De Oliveira, Alexandre Girard, Jean Guillard, Jean-Marc Roussel, Fabrice Zaoui, Francois Martignac
Summary: Acoustic cameras are being increasingly used in monitoring diadromous fish populations, but identifying anguilliform fish automatically from the data is challenging. This study developed a computer vision-based method to automatically detect, identify, and count anguilliform fish using data from multiple models of acoustic cameras. Promising results were obtained for large eels, with over 75% being successfully identified, but the detection rate for smaller eels was only 42%, with the best performance observed at detection ranges of 4-9 m. Despite the need for improvements, the cross-camera method shows promise for automatically detecting and counting large eels in long-term monitoring studies in complex environments.
Article
Fisheries
Timo J. Marjomaki, Pentti Valkeajarvi, Juha Karjalainen
Summary: The study estimated the difference in mortality between male and female Vendace and demonstrated how the sex ratio might decrease with increasing age of spawners during recruitment failure. The findings suggest that a lack of males per female spawner could impact recruitment success and contribute to population collapses in Vendace populations.
TRANSACTIONS OF THE AMERICAN FISHERIES SOCIETY
(2023)
Article
Geosciences, Multidisciplinary
Olivia Desgue-Itier, Laura Melo Vieira Soares, Orlane Anneville, Damien Bouffard, Vincent Chanudet, Pierre Alain Danis, Isabelle Domaizon, Jean Guillard, Theo Mazure, Najwa Sharaf, Frederic Soulignac, Viet Tran-Khac, Brigitte Vincon-Leite, Jean-Philippe Jenny
Summary: The long-term effects of climate change on lakes globally include substantial changes in thermal regime and oxygen solubility, which can alter ecosystem processes, habitats, and substance concentrations. Although long-term model projections of climate change effects on lakes have been developed, they are rarely compared with multi-decade observations. Additionally, global-scale forcing parameters in lake models have limitations that require significant downscaling. In this study, the effects of climate change on thermal regime and oxygen solubility were analyzed in the four largest French peri-alpine lakes over a period of 1850-2100. The results indicate a critical alteration in lake thermal and oxygen conditions in the coming decades and underscore the need for better integration of long-term lake observatories data and lake models to anticipate climate effects on lake thermal regimes and habitats.
HYDROLOGY AND EARTH SYSTEM SCIENCES
(2023)
