Fish assemblages in residential canal developments near the mouth of a subtropical Queensland estuary
1992
Morton, R.M. (WBM Oceanics Australia, Spring Hill)
In a study over 15 months in southern Queensland, in contrast to canal developments situated in bays or the middle reaches of estuaries, downstream canals did not entrap sediments, and only minimal silt deposition occurred in those canals most isolated from the river. Hydrological conditions within the canals were generally within recommended limits for fish survival. The ichthyofauna was dominated by planktivores-microcarnivores of no direct importance to fisheries. These fish guilds occurred in substantially greater numerical proportions in the canals than in undisturbed wetland areas. Well-flushed canals in nontidal sandy areas are likely to have minimal impact on existing fish communities and could increase the area of available fish habitat.
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