Article
Ecology
Steven E. Campana, Szymon Smolinski, Bryan A. Black, John R. Morrongiello, Stella J. Alexandroff, Carin Andersson, Bjarte Bogstad, Paul G. Butler, Come Denechaud, David C. Frank, Audrey J. Geffen, Jane Aanestad Godiksen, Peter Gronkjaer, Einar Hjorleifsson, Ingibjorg G. Jonsdottir, Mark Meekan, Madelyn Mette, Susanne E. Tanner, Peter van der Sleen, Gotje von Leesen
Summary: Large-scale climate-induced synchrony in fish populations' productivity is increasing in the world's oceans. The costs and benefits of trait synchronization, such as growth rate, depend on the context. Contrary to prevailing views, synchrony among individuals could actually be beneficial for populations, especially during favorable conditions. To study this, century-scale time series of annual otolith growth were used to test for changes in growth synchronization among individuals within multiple populations of Atlantic cod. The results showed increasing conformity in long-term growth rates within northeast Atlantic cod populations, indicating adaptive trait optimization in response to climate variability.
Article
Ecology
Peter G. Coulson, Tim Leary, Arani Chandrapavan, Corey B. Wakefield, Stephen J. Newman
Summary: The extreme marine heatwave off Western Australia in 2010/11, and the high water temperatures in 2011/12 and 2012/13, were partly caused by the out-of-season pole-ward flowing Leeuwin Current. While the event had negative impacts on some fisheries, it also led to increased recruitment and range extensions of tropical marine species in temperate waters. Three large-bodied tropical reef fish were caught in temperate waters off southern Western Australia, far from their usual tropical habitats. The fish were spawned during the 2011/2012 or 2012/2013 austral spring/summer spawning periods, and their ability to acclimatize to the temperate waters was facilitated by the combination of larval swimming speed and the speed of the Leeuwin Current.
REGIONAL STUDIES IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
Yi Wu, Chiyuan Miao, Xuewei Fan, Jiaojiao Gou, Qi Zhang, Haiyan Zheng
Summary: Decomposing the uncertainty of global climate models is crucial for understanding climate change. The study compares sources of uncertainty in temperature and precipitation projections from different phases of the Coupled Model Intercomparison Project and investigates the effectiveness of bias correction methods. The findings provide insights into model characteristics and offer decision-makers more accurate information for climate mitigation and adaptation measures.
Article
Engineering, Civil
Hadush Meresa, Yongqiang Zhang, Jing Tian, Muhammad Abrar Faiz
Summary: Evaluation of peak flood magnitude and frequency in the future at a catchment scale under global warming is crucial for water resource management and flood risk management. This study develops a framework to examine changes and disentangle uncertainties in peak flow, which is tested at five Awash catchments in Ethiopia, a region exposed to extreme flood risk. The results showed that projected extreme precipitation and peak flow magnitude could increase substantially in the coming decades by 30% to 55%.
JOURNAL OF HYDROLOGY
(2022)
Article
Fisheries
Eidi Kikuchi, Sebastian Garcia, Paulo Alberto Silva da Costa, Luis Gustavo Cardoso, Manuel Haimovici
Summary: Otolith shape analysis is a powerful method for fish stock identification, and in the study of Red Porgy, four potential stocks were identified in different regions of the southwestern Atlantic. The differences in otolith shape suggest that Red Porgy does not form a homogeneous group in southern Brazil.
JOURNAL OF FISH BIOLOGY
(2021)
Article
Fisheries
C. Wright, B. B. Wedding, S. Grauf, O. J. Whybird
Summary: The study demonstrates the potential for accurately and rapidly aging southern Gulf of Carpentaria barramundi using FT-NIR spectroscopy, with a high predictive accuracy of 96%. The models were also successful in predicting the age of otoliths from 2006 and 2009, indicating the reliability of the method for long-term storage samples.
MARINE AND FRESHWATER RESEARCH
(2021)
Article
Biology
Konstantina Agiadi, Frederic Quillevere, Rafal Nawrot, Theo Sommeville, Marta Coll, Efterpi Koskeridou, Jan Fietzke, Martin Zuschin
Summary: Mesopelagic fishes play crucial roles in marine food webs, are a vast but largely untapped food resource, and contribute significantly to the biological carbon pump. However, their future under climate change scenarios remains uncertain.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2023)
Article
Biodiversity Conservation
Patrick Reis-Santos, Mario Condini, Cristiano Q. Albuquerque, Tatiana D. Saint'Pierre, Alexandre M. Garcia, Bronwyn M. Gillanders, Susanne E. Tanner
Summary: The sclerochronological approaches using fish otoliths are valuable in evaluating fish responses to environmental variations, especially in regions with limited long-term data. The study on growth patterns and chemical records of dusky grouper Epinephelus marginatus revealed the impact of environmental conditions on individual growth and otolith chemistry composition. Identifying the drivers of fish growth variations is crucial for conservation and fisheries management, as population dynamics and sustainable harvesting are closely connected to individual growth.
ECOLOGICAL INDICATORS
(2021)
Article
Environmental Sciences
Theodore W. Hermann, Fabrice Duponchelle, Leandro Castello, Karin E. Limburg, Luciana A. Pereira, Marilia Hauser
Summary: Freshwater environments, particularly in the Amazon, harbor a significant portion of the world's fish diversity. However, the basic biology of fish species, including migratory behavior, remains poorly understood in the Amazon. Otolith microchemistry shows promise as a tool for studying fish life histories in the region, but its potential and limitations for informing fish conservation strategies in the Amazon are still unclear.
AQUATIC CONSERVATION-MARINE AND FRESHWATER ECOSYSTEMS
(2021)
Article
Environmental Sciences
Lucinda A. Quigley, Paul E. Caiger, Annette F. Govindarajan, Helena McMonagle, J. Michael Jech, Andone C. Lavery, Heidi M. Sosik, Joel K. Llopiz
Summary: Despite growing interest in harvesting potential resources, research on fish diversity and ecology in the ocean's mesopelagic zone is limited. This study assembled a species-specific image library of sagittal otoliths from 70 mesopelagic fishes, documenting and photographing otoliths from 12 species for the first time. Using a combination of morphological characters and DNA barcoding, the fish were identified to species. The otolith image library, along with otolith-size to fish-length relationships, can be used for prey identification and fish size estimation, providing a valuable tool for studying food webs in the poorly understood mesopelagic zone. Additionally, the generated fish barcodes contribute to existing public databases and enable further analysis of cryptic species and metabarcoding.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Plant Sciences
Adam Richard-Bollans, Conal Aitken, Alexandre Antonelli, Cassia Bitencourt, David Goyder, Eve Lucas, Ian Ondo, Oscar A. Perez-Escobar, Samuel Pironon, James E. Richardson, David Russell, Daniele Silvestro, Colin W. Wright, Melanie-Jayne R. Howes
Summary: Plants are a valuable source of bioactive compounds, including antiplasmodial compounds for malaria prevention and treatment. Traditional ethnobotanical knowledge has limitations in identifying antiplasmodial plants, but machine learning incorporating ethnobotanical and plant trait data shows promise in accelerating the search for new compounds. A novel dataset on antiplasmodial activity for three flowering plant families is presented, demonstrating the ability of machine learning algorithms to predict the potential of plant species. Machine learning models outperform ethnobotanical approaches in precision, with the Support Vector classifier performing the best. The results suggest a large, untapped potential in the search for new plant-derived antiplasmodial compounds.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Fisheries
Jialing Qiao, Ren Zhu, Kang Chen, Dong Zhang, Yunzhi Yan, Dekui He
Summary: Teleost otoliths are important for studying changes in fish population structure and dynamics. This study focused on estimating the relationship between otolith morphology and fish length, as well as detecting differences in otolith morphology between planktivorous and benthivorous morphs of Schizopygopsis thermalis in Lake Amdo Tsonak Co on the Qinghai-Tibet Plateau. The results showed that there were significant variations in otolith morphology between the two morphs, and these differences were related to habitat preferences, diet, and growth.
Article
Fisheries
Alexander L. Rigg, Clara Bellotto, Ashley M. Fowler, David J. Booth
Summary: This study assessed the deposition rate of pigment in the otoliths of the range-shifting damselfish, A. vaigiensis, and found that higher stain concentrations provide better clarity but also decrease the increment width.
JOURNAL OF FISH BIOLOGY
(2023)
Article
Biodiversity Conservation
Jennifer M. Sunday, Evan Howard, Samantha Siedlecki, Darren J. Pilcher, Curtis Deutsch, Parker MacCready, Jan Newton, Terrie Klinger
Summary: The California Current Marine Ecosystem is highly vulnerable to anthropogenic climate trends, and the sensitivity of 12 selected species to projected changes in ocean conditions was found to have significant impacts on their performance and population processes. The findings suggest potential loss of canopy-forming kelp, changes in nearshore food webs, and loss of aerobic habitat for certain species.
GLOBAL CHANGE BIOLOGY
(2022)
Article
Fisheries
Rafael Schroeder, Paulo R. Schwingel, Richard Schwarz, Felippe A. Daros, Taynara P. Franco, Natasha T. Hoff, Ana Mendez Vicente, Jorge P. Castro, Andre M. Vaz-dos-Santos, Alberto T. Correia
Summary: Studies on the population structure of Sardinella brasiliensis in Brazil confirmed the existence of two stocks based on regional somatic growth rates and spawning areas. However, limited information is available on sardine movements and connectivity between juvenile recruitment areas and adult fishing grounds.
FISHERIES RESEARCH
(2023)
Article
Ecology
Steven E. Campana, Szymon Smolinski, Bryan A. Black, John R. Morrongiello, Stella J. Alexandroff, Carin Andersson, Bjarte Bogstad, Paul G. Butler, Come Denechaud, David C. Frank, Audrey J. Geffen, Jane Aanestad Godiksen, Peter Gronkjaer, Einar Hjorleifsson, Ingibjorg G. Jonsdottir, Mark Meekan, Madelyn Mette, Susanne E. Tanner, Peter van der Sleen, Gotje von Leesen
Summary: Large-scale climate-induced synchrony in fish populations' productivity is increasing in the world's oceans. The costs and benefits of trait synchronization, such as growth rate, depend on the context. Contrary to prevailing views, synchrony among individuals could actually be beneficial for populations, especially during favorable conditions. To study this, century-scale time series of annual otolith growth were used to test for changes in growth synchronization among individuals within multiple populations of Atlantic cod. The results showed increasing conformity in long-term growth rates within northeast Atlantic cod populations, indicating adaptive trait optimization in response to climate variability.
Article
Fisheries
W. M. Koster, D. Dawson, K. Pomorin, J. R. Morrongiello
Summary: The downstream migration patterns of common galaxias (Galaxias maculatus) in the Bunyip-Tarago River system in southern Australia were investigated using passive integrated transponder technology. It was found that the fish undertake rapid downstream migration from the upper reaches to the lowland reaches near the estuary during the spawning period from March to May, with peak movement between late April and mid-May. Migration was also influenced by increased river discharge and the illumination of the moon.
MARINE AND FRESHWATER RESEARCH
(2023)
Article
Ecology
Justin O'Connor, John Morrongiello, Renae Ayres, Frank Amtstaetter, Wayne Koster, Adrian Kitchingman, Tanya Cowell, Matt Bowler, Robin Hale
Summary: Understanding the habitat use and likelihood of movement of animals can enhance the outcomes of restoration and reintroduction programs. In this study, river blackfish were reintroduced into two sites, one with rehabilitation efforts and the other without manipulation. Fish occupancy, habitat use, and movement drivers were monitored for 9 months after release. Results showed that fish were more likely to remain at the treatment site and spent more time in deeper areas with riparian vegetation. Habitat, flow, and time since release were significant predictors of fish movement.
RESTORATION ECOLOGY
(2023)
Article
Environmental Sciences
Malcolm P. Francis, Warrick S. Lyon, Shelley C. Clarke, Brittany Finucci, Melanie R. Hutchinson, Steven E. Campana, Michael K. Musyl, Kurt M. Schaefer, Simon D. Hoyle, Tom Peatman, Diego Bernal, Keith Bigelow, John Carlson, Rui Coelho, Craig Heberer, David Itano, Emma Jones, Bruno Leroy, Kwang-Ming Liu, Hilario Murua, Francois Poisson, Paul Rogers, Caroline Sanchez, Yasuko Semba, Tim Sippel, Neville Smith
Summary: To combat the decline in pelagic sharks, management and conservation measures have been implemented, such as gear restrictions and no-retention policies. However, it is important to understand the prognostic factors that influence the post-release survival outcomes of discarded sharks. The study found that larger, uninjured sharks and those released with low shark length to trailing branchline ratios had higher survival rates, highlighting the need for improved handling and release practices and reduced bycatch.
AQUATIC CONSERVATION-MARINE AND FRESHWATER ECOSYSTEMS
(2023)
Article
Fisheries
Jens Olsson, Matilda L. Andersson, Ulf Bergstro, Robert Arlinghaus, Asta Audzijonyte, Soren Berg, Laura Briekmane, Justas Dainys, Henrik Dalby Ravn, Jan Droll, Lukasz Dziemian, Dariusz P. Fey, Rob van Gemert, Martyna Greszkiewicz, Adam Grochowski, Egle Jakubaviciute, Linas Lozys, Adam M. Lejk, Noora Mustama, Rahmat Naddafi, Mikko Olin, Lauri Saks, Christian Skov, Szymon Smolinski, Roland Svirgsden, Joni Tiainen, Orjan Ostman
Summary: This study conducted a comprehensive analysis of population trends of northern pike in the Baltic Sea by integrating data from 59 time-series. The results showed an overall decline in pike populations in the region, with variations among countries. Negative trends were observed in central and southern parts, while positive trends were found in Estonia and northern Finland. Considering the socio-economic and ecological significance of pike in coastal areas of the Baltic Sea, actions should be taken to protect and restore their populations.
FISHERIES RESEARCH
(2023)
Article
Multidisciplinary Sciences
Rannveig Rogn C. Leifsdottir, Steven C. Campana
Summary: The vertebrate eye lens grows by adding layers of lens fiber cells and degrading previously-deposited cells to maintain transparency. The study aimed to determine the consistent location of the gelatinous outer cortex and hardened interior of the lens in fish species, and its relationship to fiber cell morphology and function. The finding of a fixed ratio of hardened lens diameter to overall lens diameter suggests a common refractive index profile across fish taxa, and the relationship can be used to backcalculate fish length.
Article
Fisheries
Kevin D. Friedland, Kisei R. Tanaka, Szymon Smolinski, Yanjun Wang, Cameron Hodgdon, Mackenzie Mazur, John Wiedenmann, Chandra Goetsch, Daniel E. Pendleton
Summary: Climate change affects marine species and their habitats, as demonstrated by the increased occurrence area and biomass of fish and macroinvertebrates in the Northeast U.S. Continental Shelf ecosystem over the past few decades. However, the ratio of biomass to occurrence area showed different trends in different seasons.
MARINE AND COASTAL FISHERIES
(2023)
Article
Ecology
Peter van der Sleen, Maartje Rams
Summary: Freshwater fish diversity is highest in large tropical rivers. The annual flood pulse is thought to promote species coexistence by reducing competition during high-water season and controlling population sizes during low-water season. A food web model simulation showed that more species could coexist when a regular flood pulse was present, indicating the important role of flood pulse in maintaining fish diversity. Changes in flood pulse due to deforestation, climate change, and large hydropower dams could lead to species extinctions and lower fish diversity in tropical rivers.
ENVIRONMENTAL BIOLOGY OF FISHES
(2023)
Book Review
Fisheries
Steven E. Campana
FISH AND FISHERIES
(2023)
Article
Fisheries
Steven E. Campana
Summary: This study tests the comparability of age interpretation across different time periods using an 86-year time series data. The results show that changes in otolith preparation, viewing protocol, and age reader can lead to biases in age estimates. The bias is most strongly linked to the individual age reader, and the transition from unsectioned to sectioned otoliths improves precision. The study suggests that old data sets incorporating historic age determinations can still be adequate for many research purposes.
FISHERIES RESEARCH
(2023)
Article
Ecology
Brien H. Roberts, John R. Morrongiello, David L. Morgan, Alison J. King, Thor M. Saunders, Sam C. Banks, David A. Crook
Summary: Many animals exhibit partial migration, which plays a key role in shaping population demography by driving differences in growth, age at maturity, and survival.
JOURNAL OF ANIMAL ECOLOGY
(2023)
Article
Ecology
Endre Moen, Rune Vabo, Szymon Smolinski, Come Denechaud, Nils Olav Handegard, Ketil Malde
Summary: This study developed a machine learning framework for fish age prediction using images of otoliths. The models based on convolutional neural networks achieved an average accuracy of 72.7% and performed well in predicting the age of one- and two-year-old individuals. The best models were EfficientNet B4 and EfficientNet B6 using images taken with low exposure times.
ECOLOGICAL INFORMATICS
(2023)
Article
Ecology
Peter van der Sleen, Maartje Rams
Summary: This study used a food web model to test the role of flood pulses and competitive exclusion in species coexistence. The results showed that more species could coexist when a regular flood pulse was present, indicating the importance of flood pulses for maintaining fish diversity in tropical rivers.
ENVIRONMENTAL BIOLOGY OF FISHES
(2023)