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Stock BC, Mullen AD, Jaffe JS, Candelmo A, Heppell SA, Pattengill-Semmens CV, McCoy CM, Johnson BC, Semmens BX. Protected fish spawning aggregations as self-replenishing reservoirs for regional recovery. Proc Biol Sci 2023; 290:20230551. [PMID: 37161330 PMCID: PMC10170206 DOI: 10.1098/rspb.2023.0551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023] Open
Abstract
Dispersal of eggs and larvae from spawning sites is critical to the population dynamics and conservation of marine fishes. For overfished species like critically endangered Nassau grouper (Epinephelus striatus), recovery depends on the fate of eggs spawned at the few remaining aggregation sites. Biophysical models can predict larval dispersal, yet these rely on assumed values of key parameters, such as diffusion and mortality rates, which have historically been difficult or impossible to estimate. We used in situ imaging to record three-dimensional positions of individual eggs and larvae in proximity to oceanographic drifters released into egg plumes from the largest known Nassau grouper spawning aggregation. We then estimated a diffusion-mortality model and applied it to previous years' drifter tracks to evaluate the possibility of retention versus export to nearby sites within 5 days of spawning. Results indicate that larvae were retained locally in 2011 and 2017, with 2011 recruitment being a substantial driver of population recovery on Little Cayman. Export to a nearby island with a depleted population occurred in 2016. After two decades of protection, the population appears to be self-replenishing but also capable of seeding recruitment in the region, supporting calls to incorporate spawning aggregation protections into fisheries management.
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Affiliation(s)
- Brian C Stock
- Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093, USA
- Institute of Marine Research, Nye Flødevigveien 20, 4817 His, Norway
| | - Andrew D Mullen
- Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093, USA
| | - Jules S Jaffe
- Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093, USA
| | - Allison Candelmo
- Reef Environmental Education Foundation, Key Largo, FL 33037, USA
- Central Caribbean Marine Institute, N Coast Road E Box 37, Little Cayman KY3-2501, Cayman Islands
| | - Scott A Heppell
- Department of Fisheries, Wildlife, and Conservation Sciences, Oregon State University, Corvallis, OR 97331, USA
| | | | - Croy M McCoy
- Department of Environment, Cayman Islands Government, Grand Cayman KY1-1002, Cayman Islands
- School of Ocean Sciences, Bangor University, Menai Bridge LL59 5AB, UK
| | - Bradley C Johnson
- Department of Environment, Cayman Islands Government, Grand Cayman KY1-1002, Cayman Islands
| | - Brice X Semmens
- Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093, USA
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Dyomin V, Morgalev Y, Morgalev S, Morgaleva T, Davydova A, Polovtsev I, Kirillov N, Olshukov A, Kondratova O. Features of phototropic response of zooplankton to paired photostimulation under adverse environmental conditions. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:503. [PMID: 36952065 DOI: 10.1007/s10661-023-11102-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Accepted: 03/09/2023] [Indexed: 06/18/2023]
Abstract
Our previous studies showed that the change in the plankton response to light could be an indicator of environmental pollution. This study experimentally reveals that the response of Daphnia magna Straus and Daphnia pulex plankton ensembles to photostimulation depends on the intensity of the attracting light. This makes it difficult to identify the occurrence and change of pollutant concentration. The large variability in the magnitude of the behavioral response is caused by the nonlinear response of plankton ensembles to the intensity of the attractor stimulus. As the intensity of the photostimulation increases, the variability of the phototropic response passes through increase, decrease, and relative stabilization phases. The paper proposes a modification of the photostimulation method-paired photostimulation involving successive exposure to two photostimuli of increasing intensity. The first stimulus stabilizes the behavioral response, while the increase in response to the second stimulus makes it possible to more accurately assess the responsiveness of the plankton ensemble. The paper studies the sensitivity of the method of paired stimulation of the behavioral response of different types of freshwater plankton ensembles: Daphnia magna Straus, Daphnia pulex to the effects of pollutants (potassium bichromate, microplastic). The study demonstrates good reliability and increased sensitivity of this method of detecting changes in environmental toxicity compared to single photostimulation or traditional bioindication through the survival rate of test organisms.
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Affiliation(s)
- Victor Dyomin
- Laboratory for Radiophysical and Optical Methods of Environmental Research, National Research Tomsk State University, Tomsk, Russia
| | - Yuri Morgalev
- Center for Biotesting of Nanotechnologies and Nanomaterials Safety, National Research Tomsk State University, Tomsk, Russia
| | - Sergey Morgalev
- Center for Biotesting of Nanotechnologies and Nanomaterials Safety, National Research Tomsk State University, Tomsk, Russia
| | - Tamara Morgaleva
- Center for Biotesting of Nanotechnologies and Nanomaterials Safety, National Research Tomsk State University, Tomsk, Russia
| | - Alexandra Davydova
- Laboratory for Radiophysical and Optical Methods of Environmental Research, National Research Tomsk State University, Tomsk, Russia.
| | - Igor Polovtsev
- Laboratory for Radiophysical and Optical Methods of Environmental Research, National Research Tomsk State University, Tomsk, Russia
| | - Nikolay Kirillov
- Laboratory for Radiophysical and Optical Methods of Environmental Research, National Research Tomsk State University, Tomsk, Russia
| | - Alexey Olshukov
- Laboratory for Radiophysical and Optical Methods of Environmental Research, National Research Tomsk State University, Tomsk, Russia
| | - Oksana Kondratova
- Center for Biotesting of Nanotechnologies and Nanomaterials Safety, National Research Tomsk State University, Tomsk, Russia
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Dyomin V, Davydova A, Kirillov N, Morgalev S, Naumova E, Olshukov A, Polovtsev I. In Situ Measurements of Plankton Biorhythms Using Submersible Holographic Camera. SENSORS (BASEL, SWITZERLAND) 2022; 22:6674. [PMID: 36081129 PMCID: PMC9460462 DOI: 10.3390/s22176674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 08/27/2022] [Accepted: 08/29/2022] [Indexed: 06/15/2023]
Abstract
The paper presents a diagnostic complex for plankton studies using the miniDHC (digital holographic camera). Its capabilities to study the rhythmic processes in plankton ecosystems were demonstrated using the natural testing in Lake Baikal in summer. The results of in situ measurements of plankton to detect the synchronization of collective biological rhythms with medium parameters are presented and interpreted. The most significant rhythms in terms of the correlation of their parameters with medium factors are identified. The study shows that the correlation with water temperature at the mooring site has the greatest significance and reliability. The results are verified with biodiversity data obtained by the traditional mesh method. The experience and results of the study can be used for the construction of a stationary station to monitor the ecological state of the water area through the digitalization of plankton behavior.
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Affiliation(s)
- Victor Dyomin
- Laboratory for Radiophysical and Optical Methods of Environmental Research, National Research Tomsk State University, 36 Lenin Avenue, 634050 Tomsk, Russia
| | - Alexandra Davydova
- Laboratory for Radiophysical and Optical Methods of Environmental Research, National Research Tomsk State University, 36 Lenin Avenue, 634050 Tomsk, Russia
| | - Nikolay Kirillov
- Laboratory for Radiophysical and Optical Methods of Environmental Research, National Research Tomsk State University, 36 Lenin Avenue, 634050 Tomsk, Russia
| | - Sergey Morgalev
- Laboratory for Radiophysical and Optical Methods of Environmental Research, National Research Tomsk State University, 36 Lenin Avenue, 634050 Tomsk, Russia
| | - Elena Naumova
- Laboratory for Radiophysical and Optical Methods of Environmental Research, National Research Tomsk State University, 36 Lenin Avenue, 634050 Tomsk, Russia
- Laboratory of Ichtyology, Limnological Institute SB RAS, 3 Ulan-Batorskaya Street, 664033 Irkutsk, Russia
| | - Alexey Olshukov
- Laboratory for Radiophysical and Optical Methods of Environmental Research, National Research Tomsk State University, 36 Lenin Avenue, 634050 Tomsk, Russia
| | - Igor Polovtsev
- Laboratory for Radiophysical and Optical Methods of Environmental Research, National Research Tomsk State University, 36 Lenin Avenue, 634050 Tomsk, Russia
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Oellermann M, Jolles JW, Ortiz D, Seabra R, Wenzel T, Wilson H, Tanner RL. Open Hardware in Science: The Benefits of Open Electronics. Integr Comp Biol 2022; 62:1061-1075. [PMID: 35595471 PMCID: PMC9617215 DOI: 10.1093/icb/icac043] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 04/30/2022] [Accepted: 05/13/2022] [Indexed: 11/30/2022] Open
Abstract
Openly shared low-cost electronic hardware applications, known as open electronics, have sparked a new open-source movement, with much untapped potential to advance scientific research. Initially designed to appeal to electronic hobbyists, open electronics have formed a global “maker” community and are increasingly used in science and industry. In this perspective article, we review the current costs and benefits of open electronics for use in scientific research ranging from the experimental to the theoretical sciences. We discuss how user-made electronic applications can help (I) individual researchers, by increasing the customization, efficiency, and scalability of experiments, while improving data quantity and quality; (II) scientific institutions, by improving access to customizable high-end technologies, sustainability, visibility, and interdisciplinary collaboration potential; and (III) the scientific community, by improving transparency and reproducibility, helping decouple research capacity from funding, increasing innovation, and improving collaboration potential among researchers and the public. We further discuss how current barriers like poor awareness, knowledge access, and time investments can be resolved by increased documentation and collaboration, and provide guidelines for academics to enter this emerging field. We highlight that open electronics are a promising and powerful tool to help scientific research to become more innovative and reproducible and offer a key practical solution to improve democratic access to science.
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Affiliation(s)
- Michael Oellermann
- Technical University of Munich, TUM School of Life Sciences, Aquatic Systems Biology Unit, Mühlenweg 22, D-85354 Freising, Germany.,University of Tasmania, Institute for Marine and Antarctic Studies, Fisheries and Aquaculture Centre, Private Bag 49, Hobart, TAS 7001, Australia
| | - Jolle W Jolles
- Centre for Research on Ecology and Forestry Applications (CREAF), Campus UAB, Edifici C. 08193 Bellaterra Barcelona, Spain
| | - Diego Ortiz
- INTA, Instituto Nacional de Tecnología Agropecuaria, Estación Experimental Manfredi, Ruta 9 Km 636, 5988, Manfredi, Córdoba, Argentina
| | - Rui Seabra
- CIBIO-InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, Campus Agrário de Vairão, 4485-661, Vairão, Portugal
| | - Tobias Wenzel
- Pontificia Universidad Católica de Chile, Institute for Biological and Medical Engineering, Schools of Engineering (IIBM), Medicine and Biological Sciences, Santiago, Chile
| | - Hannah Wilson
- Utah State University, College of Science, Biology Department, 5305 Old Main Hill, Logan, UT, 84321, USA
| | - Richelle L Tanner
- Chapman University, Environmental Science and Policy Program, 1 University Drive, Orange, CA 92866, USA
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Lertvilai P, Jaffe JS. In situ
size and motility measurement of aquatic invertebrates with an underwater stereoscopic camera system using tilted lenses. Methods Ecol Evol 2022. [DOI: 10.1111/2041-210x.13855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Pichaya Lertvilai
- Scripps Institution of Oceanography University of California San Diego La Jolla CA USA
| | - Jules S. Jaffe
- Scripps Institution of Oceanography University of California San Diego La Jolla CA USA
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Merz E, Kozakiewicz T, Reyes M, Ebi C, Isles P, Baity-Jesi M, Roberts P, Jaffe JS, Dennis SR, Hardeman T, Stevens N, Lorimer T, Pomati F. Underwater dual-magnification imaging for automated lake plankton monitoring. WATER RESEARCH 2021; 203:117524. [PMID: 34418642 DOI: 10.1016/j.watres.2021.117524] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 07/08/2021] [Accepted: 08/01/2021] [Indexed: 06/13/2023]
Abstract
The Dual Scripps Plankton Camera (DSPC) is a new approach for automated in-situ monitoring of phyto- and zooplankton communities based on a dual magnification dark-field imaging microscope. Here, we present the DSPC and its associated image processing while evaluating its capabilities in i) detecting and characterizing plankton species of different size and taxonomic categories and ii) measuring their abundance in both laboratory and field applications. In the laboratory, body size and abundance estimates by the DSPC significantly and robustly scaled with measurements derived by microscopy. In the field, a DSPC installed permanently at 3 m depth in Lake Greifensee (Switzerland) delivered images of plankton individuals, colonies, and heterospecific aggregates at hourly timescales without disrupting natural arrangements of interacting organisms, their microenvironment or their behavior. The DSPC was able to track the dynamics of taxa, mostly at the genus level, in the size range between ∼10 μm to ∼ 1 cm, covering many components of the planktonic food web (including parasites and potentially toxic cyanobacteria). Comparing data from the field-deployed DSPC to traditional sampling and microscopy revealed a general overall agreement in estimates of plankton diversity and abundances. The most significant disagreements between traditional methods and the DSPC resided in the measurements of zooplankton community properties. Our data suggest that the DSPC is better equipped to study the dynamics and demography of heterogeneously distributed organisms such as zooplankton, because high temporal resolution and continuous sampling offer more information and less variability in taxa detection and quantification than traditional sampling. Time series collected by the DSPC depicted ecological succession patterns, algal bloom dynamics and diel fluctuations with a temporal frequency and morphological resolution that was never observed by traditional methods. Access to high frequency, reproducible and real-time data of a large spectrum of the planktonic ecosystem expands our understanding of both applied and fundamental plankton ecology. We conclude the DSPC is robust for both research and water quality monitoring and suitable for stable long-term deployments.
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Affiliation(s)
- Ewa Merz
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Ueberlandstrasse 133, 8600 Dübendorf, Switzerland.
| | - Thea Kozakiewicz
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Ueberlandstrasse 133, 8600 Dübendorf, Switzerland
| | - Marta Reyes
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Ueberlandstrasse 133, 8600 Dübendorf, Switzerland
| | - Christian Ebi
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Ueberlandstrasse 133, 8600 Dübendorf, Switzerland
| | - Peter Isles
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Ueberlandstrasse 133, 8600 Dübendorf, Switzerland
| | - Marco Baity-Jesi
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Ueberlandstrasse 133, 8600 Dübendorf, Switzerland
| | - Paul Roberts
- Scripps Institution of Oceanography, University of California San Diego,9500 Gilman Drive, La Jolla, CA 92093-0238, United States; Monterey Bay Aquarium Research Institute (MBARI), 7700 Sandholdt Road, Moss Landing, CA 95039, United States
| | - Jules S Jaffe
- Scripps Institution of Oceanography, University of California San Diego,9500 Gilman Drive, La Jolla, CA 92093-0238, United States
| | - Stuart R Dennis
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Ueberlandstrasse 133, 8600 Dübendorf, Switzerland
| | - Thomas Hardeman
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Ueberlandstrasse 133, 8600 Dübendorf, Switzerland
| | - Nelson Stevens
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Ueberlandstrasse 133, 8600 Dübendorf, Switzerland
| | - Tom Lorimer
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Ueberlandstrasse 133, 8600 Dübendorf, Switzerland; Scripps Institution of Oceanography, University of California San Diego,9500 Gilman Drive, La Jolla, CA 92093-0238, United States
| | - Francesco Pomati
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), Ueberlandstrasse 133, 8600 Dübendorf, Switzerland.
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Underwater Holographic Sensor for Plankton Studies In Situ including Accompanying Measurements. SENSORS 2021; 21:s21144863. [PMID: 34300611 PMCID: PMC8309876 DOI: 10.3390/s21144863] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 07/08/2021] [Accepted: 07/13/2021] [Indexed: 11/17/2022]
Abstract
The paper presents an underwater holographic sensor to study marine particles—a miniDHC digital holographic camera, which may be used as part of a hydrobiological probe for accompanying (background) measurements. The results of field measurements of plankton are given and interpreted, their verification is performed. Errors of measurements and classification of plankton particles are estimated. MiniDHC allows measurement of the following set of background data, which is confirmed by field tests: plankton concentration, average size and size dispersion of individuals, particle size distribution, including on major taxa, as well as water turbidity and suspension statistics. Version of constructing measuring systems based on modern carriers of operational oceanography for the purpose of ecological diagnostics of the world ocean using autochthonous plankton are discussed. The results of field measurements of plankton using miniDHC as part of a hydrobiological probe are presented and interpreted, and their verification is carried out. The results of comparing the data on the concentration of individual taxa obtained using miniDHC with the data obtained by the traditional method using plankton catching with a net showed a difference of no more than 23%. The article also contains recommendations for expanding the potential of miniDHC, its purpose indicators, and improving metrological characteristics.
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8
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Jolles JW. Broad‐scale applications of the Raspberry Pi: A review and guide for biologists. Methods Ecol Evol 2021. [DOI: 10.1111/2041-210x.13652] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jolle W. Jolles
- Zukunftskolleg University of Konstanz Konstanz Germany
- Department of Collective Behaviour Max Planck Institute of Animal Behaviour Konstanz Germany
- Centre for Research on Ecology and Forestry Applications (CREAF) Barcelona Spain
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