Large wood in the Snowy River estuary, Australia
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文摘
In estuaries, wind and tide are as important as river flow in transporting and stranding large wood. Due to the action of wind and waves, large wood is predominantly parallel to the shore and in contact with the shore. Large wood in estuaries generally protects against bank erosion but does not affect the hydraulics or sediment transport. Large wood provides roosting and nesting sites for water birds and some shelter against currents and predators for marine life. The sparse but clumped distribution in south-eastern Australian estuaries requires more complete sampling rather than representative transect or quadrat methods. The use of inexpert undergraduates to perform field work, rather than postgraduates or professional staff, reduced the quality of data but enabled the surveys to cover a much larger area and to sample all the wood.
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