Aquatic Sciences Meeting, Albuquerque 2001

SS34 Impacts of Aquaculture and Mariculture

Date: Thursday, February 15, 2001, Time: 10:45:00 AM

Location: Sandia/Santa Ana

Costa-Pierce, B, A, Mississippi-Alabama Sea Grant Consortium, Ocean Springs, USA, b.costapierce@usm.edu

NUTRIENT IMPACTS OF CAGE AQUACULTURE ON A EUTROPHIC TROPICAL RESERVOIR ECOSYSTEM

Waste production from intensive fish cage aquaculture was quantified with sediment traps in the Saguling Reservoir, Bandung, Indonesia. Mean total (25.0 g/m2/day) and carbon (8.2 g C/m2/day) sedimentation rates were significantly greater than controls, while total nitrogen (1,375.5 mg N/m2/day)and phosphorus (2.5 mg P/m2/day) were not. Sedimenting materials from cages had a significantly higher nutrient density than materials collected from control cages. Percent losses of nutrients contained in feeds was low but very variable. Comparable data from temperate zone fish cage aquaculture show higher sedimentation and nutrient loss rates, and higher nutrient densities in sedimenting materials from cages than reported in this study.

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Aquatic Sciences Meeting, Albuquerque 2001

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