Depth structuring of pelagic copepod biodiversity in waters adjacent to an Eastern Indian Ocean coral reef

作者：McKinnon A D^*; Duggan S; Boettger Schnack R; Gusmaoa L F M; O'Leary R A

来源：Journal of Natural History, 2013, 47(5-12): 639-665.

DOI：10.1080/00222933.2012.673645

• Copepoda
• biodiversity
• depth
• Indian Ocean

We compared pelagic copepod communities at three (400+ m) stations adjacent to Scott Reef (14 degrees S), a shelf-break reef in Australia's Indian Ocean territory, with those within the shallow (c.50 m) atoll lagoon. The metazooplankton assemblage sampled by our 100-m multinet system was dominated by small (< 1.0 mm) copepods. We identified over 220 copepod species, belonging to five of the nine orders. Of these, 68 (31%) are new records for Australian waters and at least 14 are likely to be undescribed. Redundancy analysis indicated that depth stratum was the most important determinant of community structure: distinct communities were associated with the epipelagic (within which the atoll lagoon community was further distinguished by reef-associated copepods), the chlorophyll maximum/thermocline, the upper mesopelagic and the hyper-benthos. The family Oncaeidae was highly speciose (> 52 taxa) and progressively more important with increasing depth.

• 出版日期2013-3-1