Temporal and fine-scale variation in the biogeochemistry of Jervis Bay
Temporal and fine-scale variation in the biogeochemistry of Jervis Bay
Temporal and fine-scale variation in the biogeochemistry of Jervis Bay
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CERF Mar<strong>in</strong>e Biodiversity Hub <strong>Jervis</strong> <strong>Bay</strong> Survey Report, February 20093. Prelim<strong>in</strong>ary Results3.1 BIOLOGYSieved material varied across station <strong>and</strong> <strong>in</strong>cluded samples dom<strong>in</strong>ated by chaetopteridworms, seagrass, drift algae, coarse s<strong>and</strong>, <strong>and</strong> miscellanous biogenic fragments (Figure5). Initial observations suggest that <strong>variation</strong> among <strong>in</strong>faunal assemblages is greateramong stations (hundreds <strong>of</strong> meters) than with<strong>in</strong> replicates at stations (meters).Figure 5: Material reta<strong>in</strong>ed on a 500 μm sieve from Van Veen grab samples, represent<strong>in</strong>ga range <strong>of</strong> biological assemblages <strong>in</strong>clud<strong>in</strong>g those dom<strong>in</strong>ated by a) chaetopterid worms,likely Mesochaetopterus m<strong>in</strong>utes (Station 73), b) seagrass (Station 64), c) drift algae(Station 62), d) coarse s<strong>and</strong> (Station 66), <strong>and</strong> e) shell grit <strong>and</strong> miscellaneous biogenicfragments (Station 78). Photos by R. Przeslawski.10
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