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  • Biology  (6,923)
  • 2020-2022  (6,737)
  • 2015-2019  (186)
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  • 1
    Publication Date: 2022-10-20
    Description: © The Author(s), 2019. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Wang, Z. A., Moustahfid, H., Mueller, A., V., Michel, A. P. M., Mowlem, M., Glazer, B. T., Mooney, T. A., Michaels, W., McQuillan, J. S., Robidart, J. C., Churchill, J., Sourisseau, M., Daniel, A., Schaap, A., Monk, S., Friedman, K., & Brehmer, P. Advancing observation of ocean biogeochemistry, biology, and ecosystems with cost-effective in situ sensing technologies. Frontiers in Marine Science, 6, (2019): 519, doi:10.3389/fmars.2019.00519.
    Description: Advancing our understanding of ocean biogeochemistry, biology, and ecosystems relies on the ability to make observations both in the ocean and at the critical boundaries between the ocean and other earth systems at relevant spatial and temporal scales. After decades of advancement in ocean observing technologies, one of the key remaining challenges is how to cost-effectively make measurements at the increased resolution necessary for illuminating complex system processes and rapidly evolving changes. In recent years, biogeochemical in situ sensors have been emerging that are threefold or more lower in cost than established technologies; the cost reduction for many biological in situ sensors has also been significant, although the absolute costs are still relatively high. Cost savings in these advancements has been driven by miniaturization, new methods of packaging, and lower-cost mass-produced components such as electronics and materials. Recently, field projects have demonstrated the potential for science-quality data collection via large-scale deployments using cost-effective sensors and deployment strategies. In the coming decade, it is envisioned that ocean biogeochemistry and biology observations will be revolutionized by continued innovation in sensors with increasingly low price points and the scale-up of deployments of these in situ sensor technologies. The goal of this study is therefore to: (1) provide a review of existing sensor technologies that are already achieving cost-effectiveness compared with traditional instrumentation, (2) present case studies of cost-effective in situ deployments that can provide insight into methods for bridging observational gaps, (3) identify key challenge areas where progress in cost reduction is lagging, and (4) present a number of potentially transformative directions for future ocean biogeochemical and biological studies using cost-effective technologies and deployment strategies.
    Description: The unpublished work related to iTag and mini-DO sensor was supported by the US National Science Foundation (NSF) (DBI-145559). The US NSF (OCE-1233654), the US National Institute of Standards and Technology (NIST) (60NANB10D024), and the NOAA Sea Grant (2017-R/RCM-51) supported the development of the CHANOS sensor. Part of this work was supported by the European Commission via the STEMM-CCS, AtlantOS, SenseOCEAN, TriAtlas, and Preface projects under the European Union’s Horizon 2020 research and innovation program (Grant Nos. 603521, 654462, 633211, 614141, and 817578), as well as the AWA project (IRD and BMBF; 01DG12073E), and the Blue Belt Initiative (BBI). The work on the LOC nutrients and carbonate sensors was supported by the Autonuts and CarCASS projects, part of the UK Natural Environment Research Council capital program OCEANIDS (NE/P020798/1 and NE/P02081X/1). The work on zooplankton and chlorophyll sensors was co-supported by the ROEC program (Reseau d’Observation en Environnement Côtier 2015–2020) and the European Regional Development Fund (ERDF).
    Keywords: In situ ; Sensor ; OceanObs ; Ocean technology ; EOVs ; Biogeochemistry ; Biology ; Cost effective
    Repository Name: Woods Hole Open Access Server
    Type: Article
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  • 2
    Publication Date: 2021-11-22
    Description: In the present study, different oxygen levels were examined in two weight groups of great sturgeon Huso huso including small size (with initial weight 280.9 ± 49.2 g) and large size (with initial weight 1217.9 ± 138.1 g). The fish were kept in hypoxia (2-3 mg/l), normoxia (5-6 mg/l) and hyperoxia (9-10 mg/l) conditions for 8 weeks and then were individually placed in the tanks with oxygen level of 6 mg/l to levels causing sedate fish and subsequently dissolved oxygen level in water was measured every 30 minutes. No significant effects on blood cortisol and glucose levels were observed after 8 weeks (P〉0.05), but there were significant differences in cortisol concentrations between treatments (P〈0.05) after stress. Significant differences were found in cortisol and glucose levels in pre and post stress conditions in small size, but no significant differences were observed (P〉0.05) in large size. There were no significant differences in oxygen consumption among treatments (P〉0.05). Results revealed that dissolved oxygen had a significant effect on growth of H. huso and also a low level of oxygen accompanied by reduction in feed intake resulted in lower growth and changes in stress response.
    Description: Published
    Keywords: Biology ; Physiology ; Great Sturgeon ; Huso huso ; Growth performance ; Hypoxia ; Hyperoxia ; Oxygen consumption ; Stress ; Weight ; Consumption
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.533-549
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  • 3
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    In:  http://aquaticcommons.org/id/eprint/7455 | 424 | 2012-01-05 13:01:55 | 7455 | Centre de Recherches Océanologiques, Côte d'Ivoire
    Publication Date: 2021-09-24
    Description: In this report, accurate data from coastal stations and from the Vridi hydrological station were gathered. The used experiments took place from 1989 to 1991.
    Keywords: Biology ; Fisheries ; Management ; Côte d'Ivoire ; Vridi hydrological station ; coastal stations ; temperature ; salinity ; data collection
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 1-68
    Format: 68
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  • 4
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    In:  http://aquaticcommons.org/id/eprint/7485 | 424 | 2012-01-05 13:03:40 | 7485 | Centre de Recherches Océanologiques, Côte d'Ivoire
    Publication Date: 2021-09-24
    Description: In this report were gathered accurate data from coastal stations and from a hydrological station. The used experiments took place from 1986 to 1988.
    Keywords: Biology ; Fisheries ; Management ; Côte d'Ivoire ; Vridi hydrological station ; coastal stations ; temperature ; salinity ; data collection
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 1-54
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  • 5
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    In:  http://aquaticcommons.org/id/eprint/7489 | 424 | 2011-12-15 09:24:19 | 7489 | Centre de Recherches Océanographiques, Côte d'Ivoire
    Publication Date: 2021-09-24
    Description: On tables 1 to 12, daily beach surface temperatures are presented. These temperatures are also ploted on figures 2 to 5 in daily values and in 7, 15, 30 days means. Salinity variations are less important than these of temperature (Fig. 6, 7). It follows that during upwelling period, variations of dynamic height anomaly are closely correlated with temperature (Fig. 6 and 8).
    Keywords: Atmospheric Sciences ; Biology ; Information Management ; Côte d'Ivoire ; sea surface temperature variations ; coastal hydrological stations ; salinity ; data analysis
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 1-74
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  • 6
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    In:  http://aquaticcommons.org/id/eprint/8004 | 424 | 2012-03-08 12:47:02 | 8004 | Centre de Recherches Océanographiques, Côte d'Ivoire
    Publication Date: 2021-09-24
    Description: Petersen disc tag marking experiments confirm the influence of animal size and marking time on the recapture rate. Westward migrations occur, probably following the Ivorian undercurrent. Catchability coefficients have been evaluated for the Grand-Bassam fishing ground and tentatively extrapolated to the other fishing areas. The extrapolated non weighted coefficient for the entire fishing areas is q=0.00069/fishing day for an area of 390 miles. The instantaneous coefficient of residual mortality X taken as a first and possibly slightly overestimated value of M the natural mortality, has been estimated at 0.155/month, strongly corroborating Berry's results (1967). This value is however much smaller than that given by earlier authors. It is suggested that q could have a higher value during the very first weeks of exploitation at sea, when the juveniles are concentrated near the lagoon outlets.
    Keywords: Biology ; Ecology ; Côte d'Ivoire ; Penaeus duorarum ; migration ; tagging ; recapture ; mortality
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 21-44
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  • 7
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    In:  http://aquaticcommons.org/id/eprint/7937 | 424 | 2012-03-08 06:32:18 | 7937 | Centre de Recherches Océanographiques, Côte d'Ivoire
    Publication Date: 2021-09-24
    Description: The Petersen method was used to make growth assessments from experimental data collected during 1966-67 and 1969-70. The parameters K and L ∞ were calculated from the Von Bertalanffy growth curve. There was very little difference between the two years although growth in 1969 appeared slightly greater. A comparison of our results in Côte d'Ivoire with those from Senegal and Gulf of Mexico showed that the greatest growth occured on the west African coast and especially off the Côte d'Ivoire.
    Keywords: Biology ; Côte d'Ivoire ; Penaeus duorarum ; Northern pink shrimp ; growth assessment ; Petersen method
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 17-48
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  • 8
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    In:  http://aquaticcommons.org/id/eprint/7960 | 424 | 2012-03-07 15:19:38 | 7960 | Centre de Recherches Océanographiques, Côte d'Ivoire
    Publication Date: 2021-09-24
    Description: The seasonal variations of vertical distribution and abundance over the shelf are investigated for Doliolids, Salps and Larvacea. The 3 groups present many similar ecological features. Two maxima of abundance occur during the little and main cool seasons. The second maximum is usually the most important, except for Salps. The 3 taxons inhabit more superficial layers in cool than in warm seasons. This allows them to follow the phytoplankton maximum which drifts near the thermocline during the warm season. Pelagic Tunicates come back to the phytoplankton enrichment areas by the deeper Ivorian under-current. A relationship between the vertical distribution pattern and the life cycle (sexual or asexual generation) is suggested.
    Keywords: Biology ; Ecology ; Oceanography ; Côte d'Ivoire ; Doliolida ; Salps ; Larvacea ; Tunicates ; zooplankton ; vertical distribution ; life cycle
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 45-61
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  • 9
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    In:  http://aquaticcommons.org/id/eprint/7962 | 424 | 2012-03-07 15:19:01 | 7962 | Centre de Recherches Océanographiques, Côte d'Ivoire
    Publication Date: 2021-09-24
    Description: The warm season is the abundance period of the planktonic larval stages of Decapod Crustacea and of Lucifer faxonii in Ivoirian waters. Two or three maxima occur each year during the enrichments interrupting the warm and oligotropic season: February (small upwellings), June - some years - (first rains) and September - November (flood of rivers, end of cold season). Vertical distribution follows seasonal variations and varies little among the taxons. In a general way, Decapod larvae and Lucifer inhabit superficial layers in cold season and sink down during the warm season. It allows them to follow the maximum of primary production. Lucifer faxonii is breeding almost the year long. Breeds succede at rate of 3,7 weeks approximately.
    Keywords: Biology ; Ecology ; Oceanography ; Côte d'Ivoire ; Decapods larvae ; Lucifer ; zooplankton ; vertical distribution ; life cycle
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 63-84
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  • 10
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    In:  http://aquaticcommons.org/id/eprint/7963 | 424 | 2012-03-07 15:17:44 | 7963 | Centre de Recherches Océanographiques, Côte d'Ivoire
    Publication Date: 2021-09-24
    Description: Euphausiids vertical distribution on the Côte d'Ivoire continental shelf during different seasons, average zonal distrubution, mean distance to the shore, and seasonal variations in abundance computed for five years, suggest that the appearance, and the shifting of euphausiids across and along the shelf are related with the variations of the distance from the shore of the ivorian under-current. The author reports that Nyctiphanes capensis has not been found in the region.
    Keywords: Biology ; Ecology ; Oceanography ; Côte d'Ivoire ; Euphausiacea ; Nyctiphanes capensis ; zooplankton ; vertical distribution ; life cycle
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 85-90
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