Arsenic distribution and species in two Zostera capricorni seagrass ecosystems, New South Wales, Australia

William Maher, Simon Foster, Anne Taylor, Anthony Chariton

    Research output: Contribution to journalArticle

    27 Citations (Scopus)

    Abstract

    Arsenic concentrations and species were compared in biota from two Zostera capricorni ecosystems. Mean arsenic concentrations were not significantly different for non-vegetative sediment, rhizosphere sediment, Z. capricorni blades, roots, rhizomes, epiphytes, amphipods, polychaetes, molluscs, crustaceans and fish, but were significantly different in detritus. Sediments and plant tissues contained mostly inorganic arsenic and PO4â¿¿arsenoriboside. Detritus contained mostly PO4â¿¿arsenoriboside. Fish tissues contained predominately arsenobetaine. Other animals had lower proportions of arsenobetaine and variable quantities of minor arsenic species. Bioconcentration but not biomagnification of arsenic is occurring with no evidence of arsenic hyper accumulation. The proportion of arsenobetaine increases through the food web and is attributed to a shift from a mixed diet at lower trophic levels to animals containing mostly arsenobetaine at higher trophic levels and the more efficient retention of arsenobetaine, compared to other arsenic species.
    Original languageEnglish
    Pages (from-to)9-18
    Number of pages10
    JournalEnvironmental Chemistry
    Volume8
    DOIs
    Publication statusPublished - 2011

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    Arsenic
    seagrass
    Ecosystems
    arsenic
    ecosystem
    Sediments
    trophic level
    Fish
    Animals
    Molluscs
    Tissue
    hyperaccumulation
    sediment
    animal
    rhizome
    Nutrition
    fish
    amphipod
    mollusc
    detritus

    Cite this

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    title = "Arsenic distribution and species in two Zostera capricorni seagrass ecosystems, New South Wales, Australia",
    abstract = "Arsenic concentrations and species were compared in biota from two Zostera capricorni ecosystems. Mean arsenic concentrations were not significantly different for non-vegetative sediment, rhizosphere sediment, Z. capricorni blades, roots, rhizomes, epiphytes, amphipods, polychaetes, molluscs, crustaceans and fish, but were significantly different in detritus. Sediments and plant tissues contained mostly inorganic arsenic and PO4{\^a}¿¿arsenoriboside. Detritus contained mostly PO4{\^a}¿¿arsenoriboside. Fish tissues contained predominately arsenobetaine. Other animals had lower proportions of arsenobetaine and variable quantities of minor arsenic species. Bioconcentration but not biomagnification of arsenic is occurring with no evidence of arsenic hyper accumulation. The proportion of arsenobetaine increases through the food web and is attributed to a shift from a mixed diet at lower trophic levels to animals containing mostly arsenobetaine at higher trophic levels and the more efficient retention of arsenobetaine, compared to other arsenic species.",
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    author = "William Maher and Simon Foster and Anne Taylor and Anthony Chariton",
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    language = "English",
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    Arsenic distribution and species in two Zostera capricorni seagrass ecosystems, New South Wales, Australia. / Maher, William; Foster, Simon; Taylor, Anne; Chariton, Anthony.

    In: Environmental Chemistry, Vol. 8, 2011, p. 9-18.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Arsenic distribution and species in two Zostera capricorni seagrass ecosystems, New South Wales, Australia

    AU - Maher, William

    AU - Foster, Simon

    AU - Taylor, Anne

    AU - Chariton, Anthony

    PY - 2011

    Y1 - 2011

    N2 - Arsenic concentrations and species were compared in biota from two Zostera capricorni ecosystems. Mean arsenic concentrations were not significantly different for non-vegetative sediment, rhizosphere sediment, Z. capricorni blades, roots, rhizomes, epiphytes, amphipods, polychaetes, molluscs, crustaceans and fish, but were significantly different in detritus. Sediments and plant tissues contained mostly inorganic arsenic and PO4â¿¿arsenoriboside. Detritus contained mostly PO4â¿¿arsenoriboside. Fish tissues contained predominately arsenobetaine. Other animals had lower proportions of arsenobetaine and variable quantities of minor arsenic species. Bioconcentration but not biomagnification of arsenic is occurring with no evidence of arsenic hyper accumulation. The proportion of arsenobetaine increases through the food web and is attributed to a shift from a mixed diet at lower trophic levels to animals containing mostly arsenobetaine at higher trophic levels and the more efficient retention of arsenobetaine, compared to other arsenic species.

    AB - Arsenic concentrations and species were compared in biota from two Zostera capricorni ecosystems. Mean arsenic concentrations were not significantly different for non-vegetative sediment, rhizosphere sediment, Z. capricorni blades, roots, rhizomes, epiphytes, amphipods, polychaetes, molluscs, crustaceans and fish, but were significantly different in detritus. Sediments and plant tissues contained mostly inorganic arsenic and PO4â¿¿arsenoriboside. Detritus contained mostly PO4â¿¿arsenoriboside. Fish tissues contained predominately arsenobetaine. Other animals had lower proportions of arsenobetaine and variable quantities of minor arsenic species. Bioconcentration but not biomagnification of arsenic is occurring with no evidence of arsenic hyper accumulation. The proportion of arsenobetaine increases through the food web and is attributed to a shift from a mixed diet at lower trophic levels to animals containing mostly arsenobetaine at higher trophic levels and the more efficient retention of arsenobetaine, compared to other arsenic species.

    KW - arsenic occurrence

    KW - biomagnification

    KW - biotransference

    KW - C and N isotopes

    KW - food web

    KW - speciation.

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