Science Response 2011/016
Organic Enrichment in the Vicinity of Three Proposed Finfish Aquaculture Sites in Shelburne County, Nova Scotia
Context
On May 31, 2011, Fisheries and Oceans Canada’s (DFO) Habitat Management Division, Maritimes Region, requested that DFO Science, Maritimes Region, provide advice regarding organic enrichment in the vicinity of three proposed finfish aquaculture sites at Middle Head, Jordan Bay and Blue Island in Shelburne County, Nova Scotia, as well as the likelihood of the proposed development project having negative impacts on fish habitat. The request for advice is in support of Habitat Management’s review of an environmental assessment (EA) of a proposed aquaculture development project pursuant to the Canadian Environmental Assessment Act. Specifically, Habitat Management asked:
- What is the area of sensitivity for organic enrichment predicted by DEPOMOD for each aquaculture site, based on a stocking level of 700,000 fish at the:
- maximum daily feed rate; and
- average daily feed rate.
- What is the area of sensitivity for organic enrichment predicted by DEPOMOD for each aquaculture site, based on a stocking level of 1,000,000 fish at the:
- maximum daily feed rate; and
- average daily feed rate.
- At what daily feed rate would the deposition rate of 5 g m-2 d-1 be exceeded for each site.
- What is the area of sensitivity for organic enrichment for all three sites at the maximum feed rate when resuspension is turned on?
DFO’s Science Special Response Process was used to respond to this request due to the short deadline for advice of August 31, 2011. This Science Response report was developed and reviewed through email correspondence. No review meeting was held.
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