Temporal variation in benthic primary production in streams of the Australian wet–dry tropics

Erica A. Garcia, Neil E. Pettit, Danielle M. Warfe, Peter M. Davies, Peter M. Kyne, Peter Novak, Michael M. Douglas

    Research output: Contribution to journalArticleResearchpeer-review

    Abstract

    In the Australian wet–dry tropics, seasonal changes in hydrology can influence abiotic conditions and consequently influence standing stocks of benthic biomass and production. While there is some understanding of these processes at riverscape scales, effects of seasonal hydrology on benthic biomass and production in low-order streams remain largely unquantified. We observed changes in water quality, algal and macroinvertebrate biomass, and stream benthic primary productivity over a 15-month period in three low-order streams with contrasting flow regimes in the wet–dry tropics of northern Australia. Water quantity and quality showed a distinct seasonal signature reflected in seasonal peaks in algal (maximum 1.29 µg cm−2) and macroinvertebrate biomass (maximum 0.24 g m−2), and productivity (maximum 0.41 g C m−2 days−1). In particular, transitional periods between dry and wet seasons were key times of elevated production and algal biomass. Overall, variation in biomass and benthic primary production was greater between seasons than among streams indicating that extrapolation between seasons may not be appropriate.

    Original languageEnglish
    Pages (from-to)43-55
    Number of pages13
    JournalHydrobiologia
    Volume760
    Issue number1
    DOIs
    Publication statusPublished - 25 Nov 2015

    Fingerprint

    Tropics
    temporal variation
    primary production
    primary productivity
    tropics
    Biomass
    biomass
    Hydrology
    macroinvertebrates
    hydrology
    macroinvertebrate
    water quality
    Productivity
    water quantity
    productivity
    Extrapolation
    scale effect
    Water quality
    dry season
    wet season

    Cite this

    Garcia, E. A., Pettit, N. E., Warfe, D. M., Davies, P. M., Kyne, P. M., Novak, P., & Douglas, M. M. (2015). Temporal variation in benthic primary production in streams of the Australian wet–dry tropics. Hydrobiologia, 760(1), 43-55. https://doi.org/10.1007/s10750-015-2301-6
    Garcia, Erica A. ; Pettit, Neil E. ; Warfe, Danielle M. ; Davies, Peter M. ; Kyne, Peter M. ; Novak, Peter ; Douglas, Michael M. / Temporal variation in benthic primary production in streams of the Australian wet–dry tropics. In: Hydrobiologia. 2015 ; Vol. 760, No. 1. pp. 43-55.
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    abstract = "In the Australian wet–dry tropics, seasonal changes in hydrology can influence abiotic conditions and consequently influence standing stocks of benthic biomass and production. While there is some understanding of these processes at riverscape scales, effects of seasonal hydrology on benthic biomass and production in low-order streams remain largely unquantified. We observed changes in water quality, algal and macroinvertebrate biomass, and stream benthic primary productivity over a 15-month period in three low-order streams with contrasting flow regimes in the wet–dry tropics of northern Australia. Water quantity and quality showed a distinct seasonal signature reflected in seasonal peaks in algal (maximum 1.29 µg cm−2) and macroinvertebrate biomass (maximum 0.24 g m−2), and productivity (maximum 0.41 g C m−2 days−1). In particular, transitional periods between dry and wet seasons were key times of elevated production and algal biomass. Overall, variation in biomass and benthic primary production was greater between seasons than among streams indicating that extrapolation between seasons may not be appropriate.",
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    Garcia, EA, Pettit, NE, Warfe, DM, Davies, PM, Kyne, PM, Novak, P & Douglas, MM 2015, 'Temporal variation in benthic primary production in streams of the Australian wet–dry tropics', Hydrobiologia, vol. 760, no. 1, pp. 43-55. https://doi.org/10.1007/s10750-015-2301-6

    Temporal variation in benthic primary production in streams of the Australian wet–dry tropics. / Garcia, Erica A.; Pettit, Neil E.; Warfe, Danielle M.; Davies, Peter M.; Kyne, Peter M.; Novak, Peter; Douglas, Michael M.

    In: Hydrobiologia, Vol. 760, No. 1, 25.11.2015, p. 43-55.

    Research output: Contribution to journalArticleResearchpeer-review

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    AU - Garcia, Erica A.

    AU - Pettit, Neil E.

    AU - Warfe, Danielle M.

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    KW - stream

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    KW - tropical region

    KW - water quality

    KW - Australia

    KW - algae

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