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Nazir A, Lai CF, Wang SW, Lin SM, Li HC, Chung MT, Wang PL, Tseng YC, Shiao JC. Anthropogenic nitrogen pollution inferred by stable isotope records of crustose coralline algae. MARINE POLLUTION BULLETIN 2024; 198:115839. [PMID: 38052138 DOI: 10.1016/j.marpolbul.2023.115839] [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: 06/09/2023] [Revised: 11/19/2023] [Accepted: 11/21/2023] [Indexed: 12/07/2023]
Abstract
Since reef ecosystems can offer intricate habitats for various marine organisms, calcified reefs may contain valuable long-term environmental data. This study investigated stable isotopic composition of marine organisms from the Taoyuan and Linshanbi crustose coralline algae (CCA) reef ecosystems to understand sewage pollution. CCA samples from Taoyuan (Palaeo Xin A: ∼1000 years old and Palaeo G: ∼7000 years old) and Linshanbi (Palaeo L: ∼7000 years old and modern CCA) had significantly lower δ15N values (2.5-5.6 ‰) compared to modern CCA from Taoyuan (10.2 ± 1.2 ‰). Intertidal organisms from the Taoyuan CCA reef also showed higher δ15N values than those from Linshanbi CCA reef, indicating anthropogenic stress in both ecosystems. Long-term pollution monitoring and effective strategies to mitigate sewage pollution are recommended for these CCA reef ecosystems.
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Affiliation(s)
- Aafaq Nazir
- Institute of Oceanography, National Taiwan University, Taipei, Taiwan
| | - Chiao-Feng Lai
- Institute of Oceanography, National Taiwan University, Taipei, Taiwan
| | - Shih-Wei Wang
- Department of Geology, National Museum of Natural Science, Taichung, Taiwan
| | - Showe-Mei Lin
- Institute of Marine Biology, National Taiwan Ocean University, Keelung, Taiwan
| | - Hong-Chun Li
- Department of Geosciences, National Taiwan University, Taipei, Taiwan
| | - Ming-Tsung Chung
- Institute of Oceanography, National Taiwan University, Taipei, Taiwan
| | - Pei-Ling Wang
- Institute of Oceanography, National Taiwan University, Taipei, Taiwan
| | - Yung-Che Tseng
- Marine Research Station, Institute of Cellular and Organismic Biology, Academia Sinica, Yilan, Taiwan
| | - Jen-Chieh Shiao
- Institute of Oceanography, National Taiwan University, Taipei, Taiwan.
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2
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Winston M, Oliver T, Couch C, Donovan MK, Asner GP, Conklin E, Fuller K, Grady BW, Huntington B, Kageyama K, Kindinger TL, Kozar K, Kramer L, Martinez T, McCutcheon A, McKenna S, Rodgers K, Shayler CK, Vargas-Angel B, Zgliczynski B. Coral taxonomy and local stressors drive bleaching prevalence across the Hawaiian Archipelago in 2019. PLoS One 2022; 17:e0269068. [PMID: 36048764 PMCID: PMC9436070 DOI: 10.1371/journal.pone.0269068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 05/13/2022] [Indexed: 11/18/2022] Open
Abstract
The Hawaiian Archipelago experienced a moderate bleaching event in 2019—the third major bleaching event over a 6-year period to impact the islands. In response, the Hawai‘i Coral Bleaching Collaborative (HCBC) conducted 2,177 coral bleaching surveys across the Hawaiian Archipelago. The HCBC was established to coordinate bleaching monitoring efforts across the state between academic institutions, non-governmental organizations, and governmental agencies to facilitate data sharing and provide management recommendations. In 2019, the goals of this unique partnership were to: 1) assess the spatial and temporal patterns of thermal stress; 2) examine taxa-level patterns in bleaching susceptibility; 3) quantify spatial variation in bleaching extent; 4) compare 2019 patterns to those of prior bleaching events; 5) identify predictors of bleaching in 2019; and 6) explore site-specific management strategies to mitigate future bleaching events. Both acute thermal stress and bleaching in 2019 were less severe overall compared to the last major marine heatwave events in 2014 and 2015. Bleaching observed was highly site- and taxon-specific, driven by the susceptibility of remaining coral assemblages whose structure was likely shaped by previous bleaching and subsequent mortality. A suite of environmental and anthropogenic predictors was significantly correlated with observed bleaching in 2019. Acute environmental stressors, such as temperature and surface light, were equally important as previous conditions (e.g. historical thermal stress and historical bleaching) in accounting for variation in bleaching during the 2019 event. We found little evidence for acclimation by reefs to thermal stress in the main Hawaiian Islands. Moreover, our findings illustrate how detrimental effects of local anthropogenic stressors, such as tourism and urban run-off, may be exacerbated under high thermal stress. In light of the forecasted increase in severity and frequency of bleaching events, future mitigation of both local and global stressors is a high priority for the future of corals in Hawai‘i.
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Affiliation(s)
- Morgan Winston
- Cooperative Institute for Marine and Atmospheric Research, University of Hawai‘i, Honolulu, Hawai‘i, United States of America
- Pacific Islands Fisheries Science Center, National Marine Fisheries Service, Honolulu, Hawai‘i, United States of America
- Center for Global Discovery and Conservation Science and School of Geographic Sciences and Urban Planning, Arizona State University, Hilo, Hawai‘i, United States of America
- * E-mail:
| | - Thomas Oliver
- Pacific Islands Fisheries Science Center, National Marine Fisheries Service, Honolulu, Hawai‘i, United States of America
| | - Courtney Couch
- Cooperative Institute for Marine and Atmospheric Research, University of Hawai‘i, Honolulu, Hawai‘i, United States of America
- Pacific Islands Fisheries Science Center, National Marine Fisheries Service, Honolulu, Hawai‘i, United States of America
| | - Mary K. Donovan
- Center for Global Discovery and Conservation Science and School of Geographic Sciences and Urban Planning, Arizona State University, Hilo, Hawai‘i, United States of America
| | - Gregory P. Asner
- Center for Global Discovery and Conservation Science and School of Geographic Sciences and Urban Planning, Arizona State University, Hilo, Hawai‘i, United States of America
| | - Eric Conklin
- The Nature Conservancy, Honolulu, Hawai‘i, United States of America
| | - Kimberly Fuller
- Division of Aquatic Resources (O‘ahu), Anuenue Fisheries Research Center, Honolulu, Hawai‘i, United States of America
| | - Bryant W. Grady
- Center for Global Discovery and Conservation Science and School of Geographic Sciences and Urban Planning, Arizona State University, Hilo, Hawai‘i, United States of America
| | - Brittany Huntington
- Cooperative Institute for Marine and Atmospheric Research, University of Hawai‘i, Honolulu, Hawai‘i, United States of America
- Pacific Islands Fisheries Science Center, National Marine Fisheries Service, Honolulu, Hawai‘i, United States of America
| | - Kazuki Kageyama
- Division of Aquatic Resources (O‘ahu), Anuenue Fisheries Research Center, Honolulu, Hawai‘i, United States of America
| | - Tye L. Kindinger
- Pacific Islands Fisheries Science Center, National Marine Fisheries Service, Honolulu, Hawai‘i, United States of America
| | - Kelly Kozar
- Pacific Island Network Inventory and Monitoring Program, Hawai‘i National Park, Hawai‘i, United States of America
| | - Lindsey Kramer
- Division of Aquatic Resources (Kona), Kailua-Kona, Hawai‘i, United States of America
| | - Tatiana Martinez
- Division of Aquatic Resources (Maui), Wailuku, Hawai‘i, United States of America
| | - Amanda McCutcheon
- Pacific Island Network Inventory and Monitoring Program, Hawai‘i National Park, Hawai‘i, United States of America
| | - Sheila McKenna
- Pacific Island Network Inventory and Monitoring Program, Hawai‘i National Park, Hawai‘i, United States of America
| | - Ku‘ulei Rodgers
- Hawai‘i Institute of Marine Biology, Kāne‘ohe, Hawai‘i, United States of America
| | | | - Bernardo Vargas-Angel
- Cooperative Institute for Marine and Atmospheric Research, University of Hawai‘i, Honolulu, Hawai‘i, United States of America
- Pacific Islands Fisheries Science Center, National Marine Fisheries Service, Honolulu, Hawai‘i, United States of America
| | - Brian Zgliczynski
- Scripps Institution of Oceanography, La Jolla, California, United States of America
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Casella N, Careddu G, Calizza E, Sporta Caputi S, Rossi L, Belluscio A, Ardizzone G, Calcagnile L, Quarta G, D'Elia M, Costantini ML. Increasing nutrient inputs over the last 500 years in an Italian low-impacted seagrass meadow. MARINE POLLUTION BULLETIN 2022; 174:113298. [PMID: 34995890 DOI: 10.1016/j.marpolbul.2021.113298] [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: 07/29/2021] [Revised: 12/17/2021] [Accepted: 12/22/2021] [Indexed: 06/14/2023]
Abstract
Posidonia oceanica is a seagrass endemic to the Mediterranean and it has been widely used as a bioindicator. We studied the layers of a 500-year-old matte using a multiproxy approach (δ13C, δ15N, 14C and C and N concentrations in seagrass debris) in order to evaluate the potential of P. oceanica as a long-term environmental indicator of N pollution and CO2 emissions. From 1581 to 1800, accumulation rate was ca. 0.35 cm year-1, while in the last 100 years it has amounted to ca. 0.51 cm year-1. We observed increasing δ15N values with height in the vertical matte profile, indicating an increase in anthropogenic organic N inputs over time. In contrast, no clear trend in the δ13C values was observed. This study reconstructs the long-term impact of human activities on a seagrass meadow located off the Italian coast, yielding long-term background information that can help managers to implement efficient plans.
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Affiliation(s)
- Nicolò Casella
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
| | - Giulio Careddu
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy; CoNISMa, National Inter-University Consortium for Marine Sciences, Rome, Italy.
| | - Edoardo Calizza
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy; CoNISMa, National Inter-University Consortium for Marine Sciences, Rome, Italy
| | - Simona Sporta Caputi
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy; CoNISMa, National Inter-University Consortium for Marine Sciences, Rome, Italy
| | - Loreto Rossi
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy; CoNISMa, National Inter-University Consortium for Marine Sciences, Rome, Italy
| | - Andrea Belluscio
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
| | | | - Lucio Calcagnile
- CEDAD (CEnter of Applied Physics, DAting and Diagnostics), Department of Mathematics and Physics "Ennio De Giorgi", University of Salento, Lecce, Italy
| | - Gianluca Quarta
- CEDAD (CEnter of Applied Physics, DAting and Diagnostics), Department of Mathematics and Physics "Ennio De Giorgi", University of Salento, Lecce, Italy
| | - Marisa D'Elia
- CEDAD (CEnter of Applied Physics, DAting and Diagnostics), Department of Mathematics and Physics "Ennio De Giorgi", University of Salento, Lecce, Italy
| | - Maria Letizia Costantini
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy; CoNISMa, National Inter-University Consortium for Marine Sciences, Rome, Italy
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Park G, Dam HG. Cell-growth gene expression reveals a direct fitness cost of grazer-induced toxin production in red tide dinoflagellate prey. Proc Biol Sci 2021; 288:20202480. [PMID: 33563117 DOI: 10.1098/rspb.2020.2480] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Induced prey defences against consumers are conspicuous in microbes, plants and animals. In toxigenic prey, a defence fitness cost should result in a trade-off between defence expression and individual growth. Yet, previous experimental work has failed to detect such induced defence cost in toxigenic phytoplankton. We measured a potential direct fitness cost of grazer-induced toxin production in a red tide dinoflagellate prey using relative gene expression (RGE) of a mitotic cyclin gene (cyc), a marker that correlates to cell growth. This approach disentangles the reduction in cell growth from the defence cost from the mortality by consumers. Treatments where the dinoflagellate Alexandrium catenella were exposed to copepod grazers significantly increased toxin production while decreasing RGE of cyc, indicating a defence-growth trade-off. The defence fitness cost represents a mean decrease of the cell growth rate of 32%. Simultaneously, we estimate that the traditional method to measure mortality loss by consumers is overestimated by 29%. The defence appears adaptive as the prey population persists in quasi steady state after the defence is induced. Our approach provides a novel framework to incorporate the fitness cost of defence in toxigenic prey-consumer interaction models.
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Affiliation(s)
- Gihong Park
- Department of Marine Sciences, University of Connecticut, 1080 Shennecossett Road, Groton, CT 06340, USA
| | - Hans G Dam
- Department of Marine Sciences, University of Connecticut, 1080 Shennecossett Road, Groton, CT 06340, USA
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5
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Miller EA, Lisin SE, Smith CM, Van Houtan KS. Herbaria macroalgae as a proxy for historical upwelling trends in Central California. Proc Biol Sci 2020; 287:20200732. [PMID: 32546101 PMCID: PMC7329038 DOI: 10.1098/rspb.2020.0732] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 05/23/2020] [Indexed: 11/12/2022] Open
Abstract
Planning for future ocean conditions requires historical data to establish more informed ecological baselines. To date, this process has been largely limited to instrument records and observations that begin around 1950. Here, we show how marine macroalgae specimens from herbaria repositories may document long-term ecosystem processes and extend historical information records into the nineteenth century. We tested the effect of drying and pressing six macroalgae species on amino acid, heavy metal and bulk stable isotope values over 1 year using modern and archived paper. We found historical paper composition did not consistently affect values. Certain species, however, had higher variability in particular metrics while others were more consistent. Multiple herbaria provided Gelidium (Rhodophyta) samples collected in southern Monterey Bay from 1878 to 2018. We examined environmental relationships and found δ15N correlated with the Bakun upwelling index, the productivity regime of this ecosystem, from 1946 to 2018. Then, we hindcasted the Bakun index using its derived relationship with Gelidium δ15N from 1878 to 1945. This hindcast provided new information, observing an upwelling decrease mid-century leading up to the well-known sardine fishery crash. Our case study suggests marine macroalgae from herbaria are an underused resource of the marine environment that precedes modern scientific data streams.
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Affiliation(s)
- Emily A. Miller
- Conservation Research Department, Monterey Bay Aquarium, 886Cannery Row, Monterey, CA 93950, USA
| | - Susan E. Lisin
- Conservation Research Department, Monterey Bay Aquarium, 886Cannery Row, Monterey, CA 93950, USA
| | - Celia M. Smith
- Botany Department, University of Hawai’i at Manoa, 3190 Maile Way, Honolulu, Hawai‘i 96822, USA
| | - Kyle S. Van Houtan
- Conservation Research Department, Monterey Bay Aquarium, 886Cannery Row, Monterey, CA 93950, USA
- Nicholas School of the Environment, Duke University, Box 90328, Durham, NC 27708, USA
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Ricci F, Rossetto Marcelino V, Blackall LL, Kühl M, Medina M, Verbruggen H. Beneath the surface: community assembly and functions of the coral skeleton microbiome. MICROBIOME 2019; 7:159. [PMID: 31831078 PMCID: PMC6909473 DOI: 10.1186/s40168-019-0762-y] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 10/17/2019] [Indexed: 05/24/2023]
Abstract
Coral microbial ecology is a burgeoning field, driven by the urgency of understanding coral health and slowing reef loss due to climate change. Coral resilience depends on its microbiota, and both the tissue and the underlying skeleton are home to a rich biodiversity of eukaryotic, bacterial and archaeal species that form an integral part of the coral holobiont. New techniques now enable detailed studies of the endolithic habitat, and our knowledge of the skeletal microbial community and its eco-physiology is increasing rapidly, with multiple lines of evidence for the importance of the skeletal microbiota in coral health and functioning. Here, we review the roles these organisms play in the holobiont, including nutritional exchanges with the coral host and decalcification of the host skeleton. Microbial metabolism causes steep physico-chemical gradients in the skeleton, creating micro-niches that, along with dispersal limitation and priority effects, define the fine-scale microbial community assembly. Coral bleaching causes drastic changes in the skeletal microbiome, which can mitigate bleaching effects and promote coral survival during stress periods, but may also have detrimental effects. Finally, we discuss the idea that the skeleton may function as a microbial reservoir that can promote recolonization of the tissue microbiome following dysbiosis and help the coral holobiont return to homeostasis.
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Affiliation(s)
- Francesco Ricci
- School of BioSciences, University of Melbourne, Parkville, 3010 Australia
| | - Vanessa Rossetto Marcelino
- Marie Bashir Institute for Infectious Diseases and Biosecurity, Sydney Medical School, Westmead Clinical School, The University of Sydney, Sydney, NSW 2006 Australia
| | - Linda L. Blackall
- School of BioSciences, University of Melbourne, Parkville, 3010 Australia
| | - Michael Kühl
- Marine Biological Section, University of Copenhagen, Strandpromenaden 5, DK-3000 Helsingør, Denmark
- Climate Change Cluster, University of Technology Sydney, Ultimo, NSW 2007 Australia
| | - Mónica Medina
- Pennsylvania State University, University Park, PA 16802 USA
| | - Heroen Verbruggen
- School of BioSciences, University of Melbourne, Parkville, 3010 Australia
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