Geographical Information Systems (GIS) as a Simple Tool to Aid Modelling of Particulate Waste Distribution at Marine Fish Cage Sites

Pérez, Óscar; Telfer, Trevor; Beveridge, M. C. M.; Ross, Liñdsay G.

doi:10.1006/ecss.2001.0870

Cited by 62 publications

(28 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Our predictions of release rates of wastes were lower compared with early values published by Perez (2002), who reported that 87% of feed C was lost to the environment, of which 45% was released as CO 2 and 42% was released as POC. This was likely due to the lower feed losses in the present than those in the study by Perez (2002), who assumed that 10% of the total feed input was lost as uneaten feed.…”

Section: Release Rates Of C N and P Wastescontrasting

confidence: 86%

See 1 more Smart Citation

Chemical composition and release rate of waste discharge from an Atlantic salmon farm with an evaluation of IMTA feasibility

Wang¹,

Andresen²,

Handå³

et al. 2013

Aquacult. Environ. Interact.

View full text Add to dashboard Cite

The carbon (C), nitrogen (N) and phosphorus (P) compositions of salmon feed, fish and faeces were studied at a salmon farm in Badstuvika (63°31' N, 9°9' E) in central Norway. These data were used to estimate the release rates of wastes from 2 salmon cages and the qualities of particulate wastes as food resources for integrated multi-trophic aquaculture (IMTA). About 38% of feed C, 43% of feed N and 24% of feed P were retained as fish biomass. About 62% of feed C, 57% of feed N and 76% of feed P were lost into the environment. Around 40% of feed C was respired as CO 2 , and 39% of feed N and 24% of feed P were excreted as dissolved inorganic nitrogen and phosphorus, respectively. About 19% of feed C, 15% of feed N and 44% of feed P were released as particles. The chemical composition of feed was independent of time (p > 0.05). The faecal C content increased with increasing fish weight (r 2 = 0.14, p < 0.05); however, other faecal chemical components showed no apparent relationships with fish weight (p > 0.05). Our results suggested that P digestibility of feed may be 30%, but more information is still needed to reach conclusions on this. The C content of faeces was 70% of that of feed and the N content of faeces was 50% of that of feed. The P content was far higher than that of feed. The lipid, docosahexaenoic acid and eicosapentaenoic acid contents of faeces were comparable to those of some phytoplankton species. The results suggested that both feed and faeces are adequate food for blue mussels and sea cucumbers co-cultured with salmon, and the nutrient content may meet their nutritional requirements.

show abstract

Section: Release Rates Of C N and P Wastescontrasting

confidence: 86%

“…This was likely due to the lower feed losses in the present than those in the study by Perez (2002), who assumed that 10% of the total feed input was lost as uneaten feed.…”

Section: Release Rates Of C N and P Wastesmentioning

confidence: 51%

Chemical composition and release rate of waste discharge from an Atlantic salmon farm with an evaluation of IMTA feasibility

Wang¹,

Andresen²,

Handå³

et al. 2013

Aquacult. Environ. Interact.

View full text Add to dashboard Cite

show abstract

“…Global aquaculture is the fastest growing food-producing sector, with nearly half of the world's seafood supply now sourced from aquaculture (FAO 2012). A main challenge facing this industry is sustaining a continued increase in fish production while minimizing the impact on the environment (Sugiura et al 2006, 1994, Phillips et al 1991) and the rapid expansion of caged fish culture has raised a general concern about the release of solid and dissolved waste products to the environment (Troell & Norberg 1998, Perez et al 2002, Cheshuk et al 2003, Whitmarsh et al 2006, Valdemarsen et al 2012, Taranger et al 2015. Conspicuous environmental ef fects can stem from the increased organic matter loading on the seafloor, and consequential changes in benthic habitat and communities (Strain & Hargrave 2005, Kutti et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Temporal variations in suspended particulate waste concentrations at open-water fish farms in Canada and Norway

Brager¹,

Cranford²,

Jansen³

et al. 2016

Aquacult. Environ. Interact.

View full text Add to dashboard Cite

“…The concept of physical carrying capacity is straightforward and may be best addressed using hydrographical models to assess areas of interest based on their physical properties and the physical (culture type) and biological requirements of the species of interest, the pertinent data being input into and analysed using Geographic Information Systems (GIS) (Congleton et al, 1999;Arnold et al, 2000;Nath et al, 2000;Pérez et al, 2002). Much of the detailed information for the various parameters needed to determine the physical carrying capacity of a given area may already be available from a variety of sources (e.g., hydrographic charts).…”

Section: Physical Carrying Capacitymentioning

confidence: 99%

Review of recent carrying capacity models for bivalve culture and recommendations for research and management

McKindsey¹,

Thetmeyer²,

Landry³

et al. 2006

Aquaculture

236

118

View full text Add to dashboard Cite

Models and tools for assessing the carrying capacity of an area of interest for bivalve culture can be classified according to their level of complexity and scope. In this report, we discuss and outline four hierarchical categories of carrying capacity studies: physical, production, ecological, and social carrying capacity. The assessment of carrying capacity for progressively higher categories of models is based on a sound understanding of preceding categories. We discuss each in brief and the third in more detail as this is the level at which knowledge is the most lacking and for which science may make the most advances.(1) Physical carrying capacity may be assessed by a combination of hydrodynamic models and physical information, ideally presented and analysed within a Geographic Information System (GIS). (2) Most scientific effort to date has been directed towards modelling production carrying capacity and some of the resulting models have been used successfully to this end. Further development of these models should pay attention to (i) better modelling of feedback mechanisms between bivalve culture and the environment, (ii) a consideration of all steps in the culture process (seed collection, ongrowing, harvesting, and processing), and (iii) culture technique. (3) The modelling of ecological carrying capacity is still in its infancy. The shortcomings mentioned for models for production carrying capacity estimates are even greater for ecological carrying capacity models. GIS may be employed to consider interactions between culture activities and sensitive habitats. (4) It is recommended that social carrying capacity be evaluated only after the preceding levels have been completed so that an unbiased assessment is obtained. This however does not exclude direction from managers for scientists as to which factors (such as water clarity, specific habitats, etc.) should be evaluated. The use of expert systems to aid in management decisions is briefly discussed with a suggested application of a fuzzy expert system to this end.

show abstract

Geographical Information Systems (GIS) as a Simple Tool to Aid Modelling of Particulate Waste Distribution at Marine Fish Cage Sites

Cited by 62 publications

References 7 publications

Chemical composition and release rate of waste discharge from an Atlantic salmon farm with an evaluation of IMTA feasibility

Chemical composition and release rate of waste discharge from an Atlantic salmon farm with an evaluation of IMTA feasibility

Temporal variations in suspended particulate waste concentrations at open-water fish farms in Canada and Norway

Review of recent carrying capacity models for bivalve culture and recommendations for research and management

Contact Info

Product

Resources

About