ACOUSTIC REMOTE-SENSING OF REEF BENTHOS IN BROWARD COUNTY, FLORIDA(USA)

机译：美国佛罗里达州布劳沃德县礁礁鱼类的声音遥感

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Benthic assemblages of variable density cover three progressively deeperridges that parallel the Broward County, Florida, coast. An acoustic bottomclassification survey using QTCView5 with a 50 kHz transducer showeddifferent acoustic classes on the shallow reef-ridge and the two deeper reef-lines,which both showed the same acoustic signature. Ground-truthing showed thatthe differences in acoustic signature corresponded to different benthicassemblages: nearshore hardgrounds had low live cover and were dominated byalgae covering substrate, the two deeper reef-ridges had the same acousticsignature and similar benthic assemblages (dominated by sponges andgorgonians). The QTCView5 was also able to differentiate between stable sandscovered by a thin red algae turf and more mobile sand without turf cover.Acoustic remote-sensing methods can be used to differentiate benthicassemblages, as long as enough differences exist in the growth-formcharacteristics of the dominant species to provide for a different acousticroughness.

机译：可变密度的底栖组合覆盖了三个更深的区域与佛罗里达州布劳沃德县沿海平行的山脊。声学底部使用带有50 kHz换能器的QTCView5进行的分类调查显示浅礁脊和两条较深礁线上的声音类别不同，两者都显示出相同的声学特征。实地研究表明声学特征的差异对应于不同的底栖生物集合：近岸硬地的活动覆盖率低，且主要由藻类覆盖基质时，两个更深的礁脊具有相同的声波签名和类似的底栖组合（以海绵和 gorgonians）。 QTCView5还能够区分稳定的沙子被稀薄的红藻草皮覆盖，而没有草皮覆盖的沙土流动性更强。声学遥感方法可用于区分底栖生物组合，只要增长形式中存在足够的差异优势种的特征以提供不同的声学粗糙度。

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《International conference on remote sensing for marine and coastal environments》|2002年|p.1-7|共7页
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R.P. Moyer; B. Riegl; R.E. Dodge; B.K. Walker; D.S. Gilliam;
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中图分类海洋学;
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ACOUSTIC REMOTE-SENSING OF REEF BENTHOS IN BROWARD COUNTY, FLORIDA(USA)

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