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  1. Article ; Online: The comparative effects of chronic microplastic and sediment deposition on the scleractinian coral Merulina ampliata.

    Ng, Ming Sheng / Todd, Peter A

    Marine environmental research

    2023  Volume 191, Page(s) 106135

    Abstract: Despite increasing research into the effects of microplastics on corals, no study to date has compared this relatively novel pollutant with a well-established stressor such as downwelling sediments. Here, Merulina ampliata coral fragments were exposed to ...

    Abstract Despite increasing research into the effects of microplastics on corals, no study to date has compared this relatively novel pollutant with a well-established stressor such as downwelling sediments. Here, Merulina ampliata coral fragments were exposed to polyethylene terephthalate (PET) and calcium carbonate particles (200-300 μm) at two deposition levels, high (115.20 ± 5.83 mg cm
    MeSH term(s) Animals ; Anthozoa ; Microplastics ; Plastics/toxicity ; Coral Reefs ; Chlorophyll A ; Water Pollutants, Chemical/toxicity ; Water Pollutants, Chemical/analysis ; Environmental Monitoring ; Geologic Sediments
    Chemical Substances Microplastics ; Plastics ; Chlorophyll A (YF5Q9EJC8Y) ; Water Pollutants, Chemical
    Language English
    Publishing date 2023-08-18
    Publishing country England
    Document type Journal Article
    ZDB-ID 1502505-6
    ISSN 1879-0291 ; 0141-1136
    ISSN (online) 1879-0291
    ISSN 0141-1136
    DOI 10.1016/j.marenvres.2023.106135
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  2. Article ; Online: The effect of coral colony morphology, coral surface condition, particle size, and seeding point on the trapping and deposition of microplastics.

    Yen, Li Peng / Yong, Clara Lei Xin / Todd, Peter A

    The Science of the total environment

    2024  Volume 921, Page(s) 171077

    Abstract: Coral reefs are increasingly identified as microplastic sinks. Understanding the trapping and deposition effects on microplastics among coral colonies of different morphologies can help identify which corals and coral reefs are at higher risk of ... ...

    Abstract Coral reefs are increasingly identified as microplastic sinks. Understanding the trapping and deposition effects on microplastics among coral colonies of different morphologies can help identify which corals and coral reefs are at higher risk of microplastic exposure. Here, we used a current-generating saltwater flume to explore microplastic trapping and deposition among branching coral, Pocillopora acuta, colonies with contrasting morphologies (open and compact), together with varying coral surface conditions (live, dead, and waxed), microplastic sizes (400 to 500 μm and 900 to 1000 μm), and seeding points (above-colony and mid-colony). Results revealed that more microplastics were trapped by, and deposited nearer to, compact colonies compared to those with a more open morphology-likely due to differences in flow dynamics. More of the larger microplastics were trapped, as were those introduced at the mid seeding point, but coral surface condition had no significant effect. These findings add to the growing evidence that corals are effective at trapping and facilitating deposition of microplastics. Branching corals with compact structures are potentially at high risk of microplastic pollution impact. We posit that coral composition, i.e. the relative abundance of compact branching colonies, will affect microplastic accumulation in natural reef environments. SYNOPSIS: This study demonstrates the effects of coral morphology on microplastic trapping and deposition, providing mechanistic insights into the factors that contribute to coral reefs acting as microplastic sinks.
    MeSH term(s) Animals ; Anthozoa ; Microplastics/toxicity ; Plastics ; Particle Size ; Water Pollutants, Chemical/analysis ; Coral Reefs ; Ecosystem
    Chemical Substances Microplastics ; Plastics ; Water Pollutants, Chemical
    Language English
    Publishing date 2024-02-19
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2024.171077
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 949: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

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  3. Article ; Online: Author Correction: Genome-wide analysis to uncover how Pocillopora acuta survives the challenging intertidal environment.

    Poquita-Du, Rosa Celia / Huang, Danwei / Todd, Peter A

    Scientific reports

    2024  Volume 14, Issue 1, Page(s) 10333

    Language English
    Publishing date 2024-05-06
    Publishing country England
    Document type Published Erratum
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-024-60738-8
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  4. Article ; Online: Genome-wide analysis to uncover how Pocillopora acuta survives the challenging intertidal environment.

    Poquita-Du, Rosa Celia / Huang, Danwei / Todd, Peter A

    Scientific reports

    2024  Volume 14, Issue 1, Page(s) 8538

    Abstract: Characterisation of genomic variation among corals can help uncover variants underlying trait differences and contribute towards genotype prioritisation in coastal restoration projects. For example, there is growing interest in identifying resilient ... ...

    Abstract Characterisation of genomic variation among corals can help uncover variants underlying trait differences and contribute towards genotype prioritisation in coastal restoration projects. For example, there is growing interest in identifying resilient genotypes for transplantation, and to better understand the genetic processes that allow some individuals to survive in specific conditions better than others. The coral species Pocillopora acuta is known to survive in a wide range of habitats, from reefs artificial coastal defences, suggesting its potential use as a starter species for ecological engineering efforts involving coral transplantation onto intertidal seawalls. However, the intertidal section of coastal armour is a challenging environment for corals, with conditions during periods of emersion being particularly stressful. Here, we scanned the entire genome of P. acuta corals to identify the regions harbouring single nucleotide polymorphisms (SNPs) and copy number variations (CNVs) that separate intertidal colonies (n = 18) from those found in subtidal areas (n = 21). Findings revealed 74,391 high quality SNPs distributed across 386 regions of the P. acuta genome. While the majority of the detected SNPs were in non-coding regions, 12% were identified in exons (i.e. coding regions). Functional SNPs that were significantly associated with intertidal colonies were found in overrepresented genomic regions linked to cellular homeostasis, metabolism, and signalling processes, which may represent local environmental adaptation in the intertidal. Interestingly, regions that exhibited CNVs were also associated with metabolic and signalling processes, suggesting P. acuta corals living in the intertidal have a high capacity to perform biological functions critical for survival in extreme environments.
    MeSH term(s) Humans ; Animals ; DNA Copy Number Variations ; Genotype ; Genomics ; Anthozoa/genetics ; Engineering
    Language English
    Publishing date 2024-04-12
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-024-59268-0
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  5. Article ; Online: Shoreline armoring potentially diminishes the ecological roles of parrotfishes in urban coral reefs.

    Mark, Rachel Y Y / Taira, Daisuke / Todd, Peter A

    Ecology

    2024  Volume 105, Issue 3, Page(s) e4250

    MeSH term(s) Animals ; Coral Reefs ; Perciformes
    Language English
    Publishing date 2024-01-18
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2010140-5
    ISSN 1939-9170 ; 0012-9658
    ISSN (online) 1939-9170
    ISSN 0012-9658
    DOI 10.1002/ecy.4250
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  6. Article: Relative predation intensity of an intertidal gastropod on artificial coastal defense structures.

    Yeo, Hannah H J / Yeo, Jing Ying / Todd, Peter A

    Ecology and evolution

    2024  Volume 14, Issue 5, Page(s) e11385

    Abstract: Despite seawalls becoming ubiquitous coastal features, and having some physical similarities to natural rocky shores, it remains unclear how these urban habitats influence predator-prey interactions. Predators can affect intertidal mobile prey densities ... ...

    Abstract Despite seawalls becoming ubiquitous coastal features, and having some physical similarities to natural rocky shores, it remains unclear how these urban habitats influence predator-prey interactions. Predators can affect intertidal mobile prey densities through two pathways: (1) successful predation directly influences prey mortality rates, and (2) direct and indirect effects of predation can scare and induce motile prey to seek safer areas. In this study, we investigated whether intertidal predators affect the density of the marine gastropod,
    Language English
    Publishing date 2024-05-12
    Publishing country England
    Document type Journal Article
    ZDB-ID 2635675-2
    ISSN 2045-7758
    ISSN 2045-7758
    DOI 10.1002/ece3.11385
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  7. Article ; Online: Spatio-temporal dynamics of coral-macroalgal interactions and their impacts on coral growth on urbanised reefs.

    Fong, Jenny / Todd, Peter A

    Marine pollution bulletin

    2021  Volume 172, Page(s) 112849

    Abstract: Interactions between corals and macroalgae are important in influencing benthic community structures on coral reefs and have become increasingly common occurrences. However, little is known about their temporal variation as most studies have only ... ...

    Abstract Interactions between corals and macroalgae are important in influencing benthic community structures on coral reefs and have become increasingly common occurrences. However, little is known about their temporal variation as most studies have only documented them from single surveys. To investigate the dynamics of coral-macroalgal interactions, we surveyed three urbanised reefs in Singapore bi-monthly for three years. We found that the frequency of coral-macroalgal interactions varied greatly across sites and seasons. The extent of coral-macroalgal contact was positively correlated with macroalgal abundance, but the correlation differed significantly among macroalgal genera. The growth rates of Goniopora, Montipora and Pavona corals, but not Platygra, were also negatively correlated with the extent of macroalgal interactions. Overall, our results highlight that coral-macroalgal interactions are spatially and temporally dynamic, with varying effects among coral species. It is critical to consider seasonal fluctuations of macroalgae if the overall long-term impacts of macroalgae are to be understood.
    MeSH term(s) Animals ; Anthozoa ; Coral Reefs ; Seasons ; Seaweed ; Singapore
    Language English
    Publishing date 2021-08-20
    Publishing country England
    Document type Journal Article
    ZDB-ID 2001296-2
    ISSN 1879-3363 ; 0025-326X
    ISSN (online) 1879-3363
    ISSN 0025-326X
    DOI 10.1016/j.marpolbul.2021.112849
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  8. Article: Spatio-temporal dynamics of coral–macroalgal interactions and their impacts on coral growth on urbanised reefs

    Fong, Jenny / Todd, Peter A.

    Marine pollution bulletin. 2021 Nov., v. 172

    2021  

    Abstract: Interactions between corals and macroalgae are important in influencing benthic community structures on coral reefs and have become increasingly common occurrences. However, little is known about their temporal variation as most studies have only ... ...

    Abstract Interactions between corals and macroalgae are important in influencing benthic community structures on coral reefs and have become increasingly common occurrences. However, little is known about their temporal variation as most studies have only documented them from single surveys. To investigate the dynamics of coral–macroalgal interactions, we surveyed three urbanised reefs in Singapore bi-monthly for three years. We found that the frequency of coral–macroalgal interactions varied greatly across sites and seasons. The extent of coral–macroalgal contact was positively correlated with macroalgal abundance, but the correlation differed significantly among macroalgal genera. The growth rates of Goniopora, Montipora and Pavona corals, but not Platygra, were also negatively correlated with the extent of macroalgal interactions. Overall, our results highlight that coral–macroalgal interactions are spatially and temporally dynamic, with varying effects among coral species. It is critical to consider seasonal fluctuations of macroalgae if the overall long-term impacts of macroalgae are to be understood.
    Keywords Pavona ; Singapore ; benthic organisms ; corals ; macroalgae ; marine pollution ; urbanization
    Language English
    Dates of publication 2021-11
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 2001296-2
    ISSN 1879-3363 ; 0025-326X
    ISSN (online) 1879-3363
    ISSN 0025-326X
    DOI 10.1016/j.marpolbul.2021.112849
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  9. Article: Sediment trap height affects mass, particle size, and biogeochemical composition of material collected in an equatorial coral reef

    Ng, Ming Sheng / Teo, Aaron / Todd, Peter A.

    Marine pollution bulletin. 2022 Aug. 22,

    2022  

    Abstract: Anthropogenic sedimentation is a major contributor to the worldwide decline in coral cover. Resuspension of benthic material can exacerbate the threat to corals, but evidence of vertical sediment gradients is limited. Here, we installed sediment traps at ...

    Abstract Anthropogenic sedimentation is a major contributor to the worldwide decline in coral cover. Resuspension of benthic material can exacerbate the threat to corals, but evidence of vertical sediment gradients is limited. Here, we installed sediment traps at 10, 20, 30, 40, and 50 cm above the substrate at three equatorial reef sites for three months and determined the dry mass, particle size, and biogeochemical composition of the material collected. As the trap mouth height increased from 10 to 50 cm, dry mass decreased as sediments became finer, poorer in carbonate, and richer in silicate. Despite among-site differences in collected sediment, this vertical gradient was present in all trap arrays, likely driven by resuspension mechanisms on seabed sediments. These results have implications for coral vertical ecology and underline the importance of standardizing sediment collection protocols.
    Keywords carbonates ; coral reefs ; corals ; marine pollution ; particle size ; sediment traps ; sediments ; silicates
    Language English
    Dates of publication 2022-0822
    Publishing place Elsevier Ltd
    Document type Article
    Note Pre-press version
    ZDB-ID 2001296-2
    ISSN 1879-3363 ; 0025-326X
    ISSN (online) 1879-3363
    ISSN 0025-326X
    DOI 10.1016/j.marpolbul.2022.114086
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  10. Article ; Online: EmerSense: A low-cost multiparameter logger to monitor occurrence and duration of emersion events within intertidal zones.

    Poquita-Du, Rosa Celia / Morgia Du, Ian Peter / Todd, Peter A

    HardwareX

    2023  Volume 14, Page(s) e00410

    Abstract: The intertidal zone is a harsh environment for marine life as conditions are often both extreme and variable. A wide range of sessile organisms are partially or fully emersed (exposed above the water line) during low tide. In the tropics, when corals are ...

    Abstract The intertidal zone is a harsh environment for marine life as conditions are often both extreme and variable. A wide range of sessile organisms are partially or fully emersed (exposed above the water line) during low tide. In the tropics, when corals are emersed, high light and temperature can be detrimental to their survival. To date, there is no commercially-available logger that can detect periods of emersion, information that is useful for marine research and for coastal resource management. Here, we present a low-cost Arduino-based multi-parameter logger called 'EmerSense' which can detect instances of emersion while simultaneously recording light and temperature profiles. We describe the different steps involved in fabricating EmerSense, including hardware construction and software design, and discuss the results of our field testing at an intertidal coral reef in Singapore.
    Language English
    Publishing date 2023-03-01
    Publishing country England
    Document type Journal Article
    ISSN 2468-0672
    ISSN (online) 2468-0672
    DOI 10.1016/j.ohx.2023.e00410
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