A Definition of Aquaculture Intensity Based on Production Functions—The Aquaculture Production Intensity Scale (APIS)

Oddsson, Guðmundur Valur

doi:10.3390/w12030765

Cited by 39 publications

(16 citation statements)

References 59 publications

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“…Furthermore, our study showed the average production, shrimp feed used, lime used and labour (h) per yield in the intensive farm were higher than the semi‐intensive systems (Table 3). Findings are congruent with the results of Carballo et al (2008) and Oddsson (2020), where authors differentiated characters between semi‐intensive and intensive systems. In the stochastic frontier model, the feed cost correlated positively with TE in the intensive system (Table 1).…”

Section: Discussionsupporting

confidence: 91%

Influence of socio‐economic factors and environmental hazards on technical efficiency of shrimp farms: A stochastic frontier production analysis

Folorunso

Rahman²,

Olowe

et al. 2021

Aquaculture Research

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Shrimp farming is a key component of Vietnamese aquaculture contributing ~5% to their gross domestic product annually. Environmental hazards and socio‐economic parameters among other factors influence shrimp productivity in Vietnam. The present study employed the stochastic frontier production approach to investigate how technical efficiency (TE) of semi‐intensive and intensive shrimp farms is influenced by socio‐economic factors and environmental hazards. A questionnaire was administered to ascertain farmers' cost of major inputs (labour, seed, feed and lime), socio‐economic factors, coupled with environmental hazards (flood, pollution and drought experience). Findings revealed a mean TE of approximately 65% and 76% for semi‐intensive and intensive farms respectively (though, non‐significant as p ≥ 0.05). The input variables, shrimp seeds, feed and lime were found to be important variables in the intensive systems, as they positively correlated with TE in intensive systems. In the inefficiency model, education positively correlated with the TE in both systems, indicating that educated farmers are more efficient. Pollution negatively correlated with TE in both systems. With <80% of the farmers extremely affected by floods and droughts, and about 95% affected by pollution, the present study concludes there is a thorough impact of the above environmental hazards on farmers' technical efficiency.

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Section: Discussionsupporting

confidence: 91%

Influence of socio‐economic factors and environmental hazards on technical efficiency of shrimp farms: A stochastic frontier production analysis

Folorunso

Rahman²,

Olowe

et al. 2021

Aquaculture Research

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“…Mangrove forests absorb CO2 and produce O2 at a relatively high rate compared to other forest types (Hossain and Nuruddin 2016). In addition, mangroves have high adaptability when combined with an anaerobic environment and conditions (Oddsson 2020), resulting in significant long carbon storage potential (Murdiyarso et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Mangrove species diversity and carbon stock in silvofishery ponds in Deli Serdang District, North Sumatra, Indonesia

et al. 2022

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Abstract. Harefa MS, Nasution Z, Mulya MB, Maksum A. 2021. Mangrove species diversity and carbon stock in silvofishery ponds in Deli Serdang District, North Sumatra, Indonesia. Biodiversitas 23: 655-662. Mangrove-based silvofishery ponds are promoted as a win-win solution for biodiversity conservation, climate change mitigation as well as income generation for coastal communities. This study aimed to analyze the species diversity and carbon stock of mangrove vegetation in silvofishery ponds in Tanjung Rejo Village, Percut Seituan Sub-district, Deli Serdang District, North Sumatra, Indonesia. Data of the mangrove species were obtained using vegetation analysis, and the potential carbon stock was estimated based on allometric equations of both above- and below-ground tree biomass. For this purpose, plot samples from 22 silvofishery ponds were taken by establishing 5 aligned circular plots, each with a radius of 5.64 m, perpendicular to the coastline and with a distance of 15 meters between their perimeters. The results show that the mangrove species with the highest Importance Value Index (IVI) was Rhizophora apiculata (122.05%), followed by Excoecaria agallocha (42.29%) and Avicennia marina (36.84%), and the lowest IVI was Sonneratia caseolaris (1.48%). Higher IVI values indicate a larger carbon deposit from mangrove vegetation in silvofishery ponds. Our results indicate that mangrove area coverage of 44-80% per hectare in silvofishery ponds can deposit 40-50 tonnes of carbon per hectare and have greater potential carbon stock compared to coverage below 40%. The mangrove management activities with the sylvofishery scheme have a good impact on the community's economy and also maintain the existence of mangroves as carbon storage.

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“…A traditional cultivation system is the simplest type of system and is characterized by low stocking densities, natural food feeding, relatively small business capital, and cultivation activities that are more dependent on natural conditions (Anras et al 2010). Semi-intensive and intensive methods are characterized by high stocking densities, a combination of natural and artificial feeds, the presence of periodic water quality measurements, and greater business capital (Oddsson 2020). In response to the high demand for whiteleg shrimp, many farmers have implemented intensive systems because they can significantly increase shrimp production (Nguyen et al 2020).…”

Section: Introductionmentioning

confidence: 99%

The effectiveness of silvofishery system in water treatment in intensive whiteleg shrimp (Litopenaeus vannamei) ponds, Probolinggo District, East Java, Indonesia

et al. 2020

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Abstract. Musa M, Lusiana ED, Buwono NR, Arsad S, Mahmudi M. 2020. The effectiveness of silvofishery system in water treatment in intensive whiteleg shrimp (Litopenaeus vannamei) ponds, Probolinggo District, East Java Indonesia. Biodiversitas 21: 4695-4701. Whiteleg shrimp (Litopenaeus vannamei) is a popular aquaculture species in Indonesia due to its high market demand. It requires excellent water quality to ensure its growth rate and production. Therefore, intensive culture system is considered. However, the system threatens the sustainability of the adjacent environment and thus proper water treatment is necessary to increase the quality of water used in shrimp farming as well as the wastewater it produces. In this study, we explored the use of a silvofishery system that integrates mangroves into a pond as a potential solution to this issue. This study aimed to assess the effectiveness of the silvofishery system at treating water inputs and effluents of a whiteleg shrimp pond in Probolinggo District, East Java, Indonesia. Eight physicochemical water quality parameters and a phytoplankton community at four sampling sites during neap tide period were examined in this study. The effectiveness of the silvofishery system in increasing water quality was analyzed using analysis of variance (ANOVA), while the diversity of phytoplankton for biomonitoring was measured with the Shannon-Wiener diversity index (H’). The results showed that the mangrove effectively increased the quality of the water supply and wastewater in the intensive whiteleg shrimp pond-especially in terms of nutrient removal-as well as the biodiversity of its phytoplankton community. Other parameters such as TOM and ammonia also decreased, though this was not statistically proven.

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A Definition of Aquaculture Intensity Based on Production Functions—The Aquaculture Production Intensity Scale (APIS)

Cited by 39 publications

References 59 publications

Influence of socio‐economic factors and environmental hazards on technical efficiency of shrimp farms: A stochastic frontier production analysis

Influence of socio‐economic factors and environmental hazards on technical efficiency of shrimp farms: A stochastic frontier production analysis

Mangrove species diversity and carbon stock in silvofishery ponds in Deli Serdang District, North Sumatra, Indonesia

The effectiveness of silvofishery system in water treatment in intensive whiteleg shrimp (Litopenaeus vannamei) ponds, Probolinggo District, East Java, Indonesia

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