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Espinoza M, Quesada-Perez F, Madrigal-Mora S, Naranjo-Elizondo B, Clarke TM, Cortés J. A decade of submersible observations revealed temporal trends in elasmobranchs in a remote island of the Eastern Tropical Pacific Ocean. Sci Rep 2024; 14:13786. [PMID: 38877056 PMCID: PMC11178919 DOI: 10.1038/s41598-024-64157-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 06/05/2024] [Indexed: 06/16/2024] Open
Abstract
No-take marine protected areas (MPAs) can mitigate the effects of overfishing, climate change and habitat degradation, which are leading causes of an unprecedented global biodiversity crisis. However, assessing the effectiveness of MPAs, especially in remote oceanic islands, can be logistically challenging and often restricted to relatively shallow and accessible environments. Here, we used a long-term dataset (2010-2019) collected by the DeepSee submersible of the Undersea Hunter Group that operates in Isla del Coco National Park, Costa Rica, to (1) determine the frequency of occurrence of elasmobranch species at two depth intervals (50-100 m; 300-400 m), and (2) investigate temporal trends in the occurrence of common elasmobranch species between 2010 and 2019, as well as potential drivers of the observed changes. Overall, we observed 17 elasmobranch species, 15 of which were recorded on shallow dives (50-100 m) and 11 on deep dives (300-400 m). We found a decreasing trend in the probability of occurrence of Carcharhinus falciformis over time (2010-2019), while other species (e.g. Taeniurops meyeni, Sphyrna lewini, Carcharhinus galapagensis, Triaenodon obesus, and Galeocerdo cuvier) showed an increasing trend. Our study suggests that some species like S. lewini may be shifting their distributions towards deeper waters in response to ocean warming but may also be sensitive to low oxygen levels at greater depths. These findings highlight the need for regional 3D environmental information and long-term deepwater surveys to understand the extent of shark and ray population declines in the ETP and other regions, as most fishery-independent surveys from data-poor countries have been limited to relatively shallow waters.
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Affiliation(s)
- Mario Espinoza
- Centro de Investigación en Ciencias del Mar y Limnología, Universidad de Costa Rica, San Pedro, San José, 11501-2060, Costa Rica.
- Escuela de Biología, Universidad de Costa Rica, San Pedro, San José, 11501-2060, Costa Rica.
- MigraMar, Bodega Bay, CA, 94923, USA.
| | - Fabio Quesada-Perez
- Centro de Investigación en Ciencias del Mar y Limnología, Universidad de Costa Rica, San Pedro, San José, 11501-2060, Costa Rica
| | | | - Beatriz Naranjo-Elizondo
- Centro de Investigación en Ciencias del Mar y Limnología, Universidad de Costa Rica, San Pedro, San José, 11501-2060, Costa Rica
- MigraMar, Bodega Bay, CA, 94923, USA
- Centro de Investigación en Estructuras Microscópicas (CIEMic), Universidad de Costa Rica, San Pedro, San José, 11501-2060, Costa Rica
- Pelagos Okeanos, Moravia, San José, 11401, Costa Rica
| | - Tayler M Clarke
- Changing Ocean Research Unit, Institute for the Oceans and Fisheries, University of British Columbia, AERL, 2202 Main Mall, Vancouver, BC, V6T 1Z4, Canada
| | - Jorge Cortés
- Centro de Investigación en Ciencias del Mar y Limnología, Universidad de Costa Rica, San Pedro, San José, 11501-2060, Costa Rica
- Escuela de Biología, Universidad de Costa Rica, San Pedro, San José, 11501-2060, Costa Rica
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3He/4He Signature of Magmatic Fluids from Telica (Nicaragua) and Baru (Panama) Volcanoes, Central American Volcanic Arc. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12094241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Constraining the magmatic 3He/4He signature of fluids degassed from a magmatic system is crucial for making inferences on its mantle source. This is especially important in arc volcanism, where variations in the composition of the wedge potentially induced by slab sediment fluids must be distinguished from the effects of magma differentiation, degassing, and crustal contamination. The study of fluid inclusions (FIs) trapped in minerals of volcanic rocks is becoming an increasingly used methodology in geochemical studies that integrates the classical study of volcanic and geothermal fluids. Here, we report on the first noble gas (He, Ne, Ar) concentrations and isotopic ratios of FI in olivine (Ol) and pyroxene (Px) crystals separated from eruptive products of the Telica and Baru volcanoes, belonging to the Nicaraguan and Panamanian arc-segments of Central America Volcanic arc (CAVA). FIs from Telica yield air corrected 3He/4He (Rc/Ra) of 7.2–7.4 Ra in Ol and 6.1–7.3 in Px, while those from Baru give 7.1–8.0 Ra in Ol and 4.2–5.8 Ra in Px. After a data quality check and a comparison with previous 3He/4He measurements carried out on the same volcanoes and along CAVA, we constrained a magmatic Rc/Ra signature of 7.5 Ra for Telica and of 8.0 Ra for Baru, both within the MORB range (8 ± 1 Ra). These 3He/4He differences also reflect variations in the respective arc-segments, which cannot be explained by radiogenic 4He addition due to variable crust thickness, as the mantle beneath Nicaragua and Panama is at about 35 and 30 km, respectively. We instead highlight that the lowest 3He/4He signature observed in the Nicaraguan arc segment reflects a contamination of the underlying wedge by slab sediment fluids. Rc/Ra values up to 9.0 Ra are found at Pacaya volcano in Guatemala, where the crust is 45 km thick, while a 3He/4He signature of about 8.0 Ra was measured at Turrialba volcano in Costa Rica, which is similar to that of Baru, and reflects possible influence of slab melting, triggered by a change in subduction conditions and the contemporary subduction of the Galapagos hot-spot track below southern Costa Rica and western Panama.
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Paleomagnetism of IODP Site U1380: Implications for the Forearc Deformation in the Costa Rican Erosive Convergent Margin. Sci Rep 2018; 8:11430. [PMID: 30061741 PMCID: PMC6065392 DOI: 10.1038/s41598-018-29243-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 07/06/2018] [Indexed: 11/18/2022] Open
Abstract
The destructive nature of subduction erosion poses challenges to fully understanding the evolution of erosive convergent margins that are critical to understanding crustal recycling and seismogenesis. Forearc deformation holds important clues to the evolution of erosive convergent margins. Here we present detailed paleomagnetic and structural analyses of IODP Site U1380 cores from the middle slope of the forearc of the Costa Rican erosive convergent margin. The analyses reveal a strong deformation zone from ~490 to ~550 mbsf that is characterized by abundant fissility/foliations shallower than the bedding. Similar relatively strong deformation zones are recognized from the frontal prism and upper slope sites, and are broadly correlative, forming a zone of strong deformation across the forearc. This zone spans ~2.0 to 1.83 Ma and the deformation likely occurred briefly at ~1.80 Ma. The widespread, short-lived, and strong deformation is interpreted as a result of intense subhorizontal shear following the rapid forearc subsidence driven by the dramatic subduction erosion associated with the abrupt onset of the Cocos Ridge subduction. Given the typical occurrence of forearc subsidence by subduction erosion, similar styles of deformation are probably common in other erosive convergent margins as well.
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Harris R, Sakaguchi A, Petronotis K, Baxter A, Berg R, Burkett A, Charpentier D, Choi J, Diz Ferreiro P, Hamahashi M, Hashimoto Y, Heydolph K, Jovane L, Kastner M, Kurz W, Kutterolf S, Li Y, Malinverno A, Martin K, Millan C, Nascimento D, Saito S, Sandoval Gutierrez M, Screaton E, Smith-Duque C, Solomon E, Straub S, Tanikawa W, Torres M, Uchimura H, Vannucchi P, Yamamoto Y, Yan Q, Zhao X. Expedition 344 summary. PROCEEDINGS OF THE IODP 2013. [DOI: 10.2204/iodp.proc.344.101.2013] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Morell KD, Kirby E, Fisher DM, van Soest M. Geomorphic and exhumational response of the Central American Volcanic Arc to Cocos Ridge subduction. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/2011jb008969] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Buchs DM, Baumgartner PO, Baumgartner-Mora C, Bandini AN, Jackett SJ, Diserens MO, Stucki J. Late Cretaceous to Miocene seamount accretion and mélange formation in the Osa and Burica Peninsulas (Southern Costa Rica): episodic growth of a convergent margin. ACTA ACUST UNITED AC 2009. [DOI: 10.1144/sp328.17] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
AbstractMultidisciplinary study of the Osa and Burica peninsulas, Costa Rica, recognizes the Osa Igneous Complex and the Osa Mélange – records of a complex Late Cretaceous–Miocene tectonic–sedimentary history. The Igneous Complex, an accretionary prism (sensu stricto) comprises mainly basaltic lava flows, with minor sills, gabbroic intrusives, pelagic limestones and radiolarites. Sediments or igneous rocks derived from the upper plate are absent. Four units delimited on the base of stratigraphy and geochemistry lie in contact along reactivated palaeo-décollement zones. They comprise fragments of a Coniacian–Santonian oceanic plateau (Inner Osa Igneous Complex) and Coniacian–Santonian to Middle Eocene seamounts (Outer Osa Igneous Complex). The units are unrelated to other igneous complexes of Costa Rica and Panama and are exotic with respect to the partly overthickened Caribbean Plate; they formed by multiple accretions between the Late Cretaceous and Middle Eocene, prior to the genesis of the mélange. Events of high-rate accretion alternated with periods of low-rate accretion and tectonic erosion. The NW Osa Mélange in contact with the Osa Igneous Complex has a block-in-matrix texture at various scales, produced by sedimentary processes and later tectonically enhanced. Lithologies are mainly debris flows and hemipelagic deposits. Clastic components (grains to large boulders) indicate Late Eocene mass wasting of the Igneous Complex, forearc deposits and a volcanic arc. Gravitational accumulation of a thick pile of trench sediments culminated with shallow-level accretion. Mass-wasting along the margin was probably triggered by seamount subduction and/or plate reorganization at larger scale. The study provides new geological constraints for seamount subduction and associated accretionary processes, as well as on the erosive/accretionary nature of convergent margins devoid of accreted sediments.
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Affiliation(s)
- David Marc Buchs
- Institut de Géologie et Paléontologie, Université de Lausanne, Bâtiment Anhtropole, 1015 Lausanne, Switzerland
| | - Peter Oliver Baumgartner
- Institut de Géologie et Paléontologie, Université de Lausanne, Bâtiment Anhtropole, 1015 Lausanne, Switzerland
| | - Claudia Baumgartner-Mora
- Institut de Géologie et Paléontologie, Université de Lausanne, Bâtiment Anhtropole, 1015 Lausanne, Switzerland
| | - Alexandre Nicolas Bandini
- Institut de Géologie et Paléontologie, Université de Lausanne, Bâtiment Anhtropole, 1015 Lausanne, Switzerland
| | - Sarah-Jane Jackett
- Institut de Géologie et Paléontologie, Université de Lausanne, Bâtiment Anhtropole, 1015 Lausanne, Switzerland
| | - Marc-Olivier Diserens
- Institut de Géologie et Paléontologie, Université de Lausanne, Bâtiment Anhtropole, 1015 Lausanne, Switzerland
| | - Jérôme Stucki
- Institut de Géologie et Paléontologie, Université de Lausanne, Bâtiment Anhtropole, 1015 Lausanne, Switzerland
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Norabuena E, Dixon TH, Schwartz S, DeShon H, Newman A, Protti M, Gonzalez V, Dorman L, Flueh ER, Lundgren P, Pollitz F, Sampson D. Geodetic and seismic constraints on some seismogenic zone processes in Costa Rica. ACTA ACUST UNITED AC 2004. [DOI: 10.1029/2003jb002931] [Citation(s) in RCA: 93] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Edmundo Norabuena
- Rosenstiel School of Marine and Atmospheric Sciences; University of Miami; Miami Florida USA
| | - Timothy H. Dixon
- Rosenstiel School of Marine and Atmospheric Sciences; University of Miami; Miami Florida USA
| | - Susan Schwartz
- Earth Sciences Department; University of California; Santa Cruz California USA
| | - Heather DeShon
- Earth Sciences Department; University of California; Santa Cruz California USA
| | - Andrew Newman
- Earth Sciences Department; University of California; Santa Cruz California USA
| | - Marino Protti
- Observatorio Vulcanológico y Sismológico de Costa Rica; Universidad Nacional; Heredia Costa Rica
| | - Victor Gonzalez
- Observatorio Vulcanológico y Sismológico de Costa Rica; Universidad Nacional; Heredia Costa Rica
| | - LeRoy Dorman
- Scripps Institution of Oceanography; University of California, San Diego; La Jolla California USA
| | - Ernst R. Flueh
- Leibniz Institut fur Meereswissenshaften, Forschungszentrum fur Marine Geowissenschaften (IFM-GEOMAR) and SFB574 Christian-Albrechts Universitat; Kiel Germany
| | - Paul Lundgren
- Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
| | - Fred Pollitz
- U.S. Geological Survey; Menlo Park California USA
| | - Dan Sampson
- Earth Sciences Department; University of California; Santa Cruz California USA
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DeShon HR, Schwartz SY, Bilek SL, Dorman LM, Gonzalez V, Protti JM, Flueh ER, Dixon TH. Seismogenic zone structure of the southern Middle America Trench, Costa Rica. ACTA ACUST UNITED AC 2003. [DOI: 10.1029/2002jb002294] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- H. R. DeShon
- Department of Earth Sciences and the Institute of Geophysical and Planetary Physics; University of California, Santa Cruz; Santa Cruz California USA
| | - S. Y. Schwartz
- Department of Earth Sciences and the Institute of Geophysical and Planetary Physics; University of California, Santa Cruz; Santa Cruz California USA
| | - S. L. Bilek
- Department of Geological Sciences; University of Michigan; Ann Arbor Michigan USA
| | - L. M. Dorman
- Scripps Institution of Oceanography; University of California, San Diego; La Jolla California USA
| | - V. Gonzalez
- Observatorio Vulcanológico y Sismológico de Costa Rica; Universidad Nacional; Heredia Costa Rica
| | - J. M. Protti
- Observatorio Vulcanológico y Sismológico de Costa Rica; Universidad Nacional; Heredia Costa Rica
| | - E. R. Flueh
- Forschungszentrum für Marine Geowisssenschaften (GEOMAR); Christian-Albrechts-University of Kiel; Kiel Germany
| | - T. H. Dixon
- Rosenstiel School of Marine and Atmospheric Science; University of Miami; Miami Florida USA
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Kopp H, Kopp C, Phipps Morgan J, Flueh ER, Weinrebe W, Morgan WJ. Fossil hot spot-ridge interaction in the Musicians Seamount Province: Geophysical investigations of hot spot volcanism at volcanic elongated ridges. ACTA ACUST UNITED AC 2003. [DOI: 10.1029/2002jb002015] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- H. Kopp
- GEOMAR Research Center for Marine Geosciences; Kiel Germany
| | - C. Kopp
- GEOMAR Research Center for Marine Geosciences; Kiel Germany
| | | | - E. R. Flueh
- GEOMAR Research Center for Marine Geosciences; Kiel Germany
| | - W. Weinrebe
- GEOMAR Research Center for Marine Geosciences; Kiel Germany
| | - W. J. Morgan
- Department of Geosciences; Princeton University; Princeton New Jersey USA
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