Sponges as sentinels: Patterns of spatial and intra-individual variation in trace metal concentration

C. de Mestre, William Maher, David Roberts, A. Broad, A Davis

    Research output: Contribution to journalArticle

    23 Citations (Scopus)

    Abstract

    If sponges are to be effective biomonitors we require a better understanding of the spatial scales over which metals vary in these organisms. We determined how concentration of Cd, Zn, Cu, Pb, Hg and Se varied over four spatial scales for two common estuarine sponge species in the Sydney region. We examined variability with a fully nested sampling design; between coastal lakes, within coastal lakes, between sponges and within sponges. Calculation of variance components confirmed that â¿¿within-spongeâ¿¿ variation in Cd, Zn, Cu, Pb and Se concentrations were low (1â¿¿14%) relative to the two largest spatial scales (49â¿¿98%) examined. In contrast, Hg concentrations exhibited marked variability â¿¿between-spongesâ¿¿ and were below detection at one location. There was little evidence that sponge size was a good predictor of metal concentration. Taken together, these outcomes confirm that fragments of these sponges could be successfully transplanted and therefore show promise as biomonitors of metal contamination.
    Original languageEnglish
    Pages (from-to)80-89
    Number of pages10
    JournalMarine Pollution Bulletin
    Volume64
    DOIs
    Publication statusPublished - 2012

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    sponge
    trace metal
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    Lakes
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    Contamination
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    Sampling
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    Trace metals
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    Cite this

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    title = "Sponges as sentinels: Patterns of spatial and intra-individual variation in trace metal concentration",
    abstract = "If sponges are to be effective biomonitors we require a better understanding of the spatial scales over which metals vary in these organisms. We determined how concentration of Cd, Zn, Cu, Pb, Hg and Se varied over four spatial scales for two common estuarine sponge species in the Sydney region. We examined variability with a fully nested sampling design; between coastal lakes, within coastal lakes, between sponges and within sponges. Calculation of variance components confirmed that {\^a}¿¿within-sponge{\^a}¿¿ variation in Cd, Zn, Cu, Pb and Se concentrations were low (1{\^a}¿¿14{\%}) relative to the two largest spatial scales (49{\^a}¿¿98{\%}) examined. In contrast, Hg concentrations exhibited marked variability {\^a}¿¿between-sponges{\^a}¿¿ and were below detection at one location. There was little evidence that sponge size was a good predictor of metal concentration. Taken together, these outcomes confirm that fragments of these sponges could be successfully transplanted and therefore show promise as biomonitors of metal contamination.",
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    Sponges as sentinels: Patterns of spatial and intra-individual variation in trace metal concentration. / de Mestre, C.; Maher, William; Roberts, David; Broad, A.; Davis, A.

    In: Marine Pollution Bulletin, Vol. 64, 2012, p. 80-89.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Sponges as sentinels: Patterns of spatial and intra-individual variation in trace metal concentration

    AU - de Mestre, C.

    AU - Maher, William

    AU - Roberts, David

    AU - Broad, A.

    AU - Davis, A

    PY - 2012

    Y1 - 2012

    N2 - If sponges are to be effective biomonitors we require a better understanding of the spatial scales over which metals vary in these organisms. We determined how concentration of Cd, Zn, Cu, Pb, Hg and Se varied over four spatial scales for two common estuarine sponge species in the Sydney region. We examined variability with a fully nested sampling design; between coastal lakes, within coastal lakes, between sponges and within sponges. Calculation of variance components confirmed that â¿¿within-spongeâ¿¿ variation in Cd, Zn, Cu, Pb and Se concentrations were low (1â¿¿14%) relative to the two largest spatial scales (49â¿¿98%) examined. In contrast, Hg concentrations exhibited marked variability â¿¿between-spongesâ¿¿ and were below detection at one location. There was little evidence that sponge size was a good predictor of metal concentration. Taken together, these outcomes confirm that fragments of these sponges could be successfully transplanted and therefore show promise as biomonitors of metal contamination.

    AB - If sponges are to be effective biomonitors we require a better understanding of the spatial scales over which metals vary in these organisms. We determined how concentration of Cd, Zn, Cu, Pb, Hg and Se varied over four spatial scales for two common estuarine sponge species in the Sydney region. We examined variability with a fully nested sampling design; between coastal lakes, within coastal lakes, between sponges and within sponges. Calculation of variance components confirmed that â¿¿within-spongeâ¿¿ variation in Cd, Zn, Cu, Pb and Se concentrations were low (1â¿¿14%) relative to the two largest spatial scales (49â¿¿98%) examined. In contrast, Hg concentrations exhibited marked variability â¿¿between-spongesâ¿¿ and were below detection at one location. There was little evidence that sponge size was a good predictor of metal concentration. Taken together, these outcomes confirm that fragments of these sponges could be successfully transplanted and therefore show promise as biomonitors of metal contamination.

    KW - Trace metals

    KW - Spatial variation

    KW - Sponge

    KW - Biomonitors

    KW - Porifera

    U2 - 10.1016/j.marpolbul.2011.10.020

    DO - 10.1016/j.marpolbul.2011.10.020

    M3 - Article

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    SP - 80

    EP - 89

    JO - Marine Pollution Bulletin

    JF - Marine Pollution Bulletin

    SN - 0025-326X

    ER -