Environmental sustainability of future aquaculture production: Analysis of Singaporean and Norwegian policies

Production Systems ◽

Household Food Security ◽

Small Scale ◽

Annual Household Income ◽

The Past ◽

Household Food ◽

Integrated Agriculture ◽

The Impact ◽

Abstract Southern Malawi is characterized by the Rift valley and the Shire Highlands, which are dominated by the Zomba and Mulanje plateaux, and the Kirk Range. These mountainous areas are a source of various rivers and streams, which support small-scale integrated agriculture-aquaculture systems (IAA). The IAA systems were introduced to Malawi in 1986 by the WorldFish Center when a range of IAA technologies were developed and disseminated to farmers. The most common IAA system consists of fishponds, vegetables, fish, rice and irrigated maize. This system is practised by over 2,000 farmers in southern Malawi. The number of farmers practising this system has grown by 25% per year over the past 5 years because of the impact that this system has on household food security, income and environmental sustainability. Farmers practising IAA achieve yields of over 1,500 kg ha-1 yr-1 extrapolated from 450 m2 ponds compared with 900 kg ha-1 yr-1 for non-integrated farms and twice as much annual household income (US$ 270) than non-IAA farms.

Towards Environmental Sustainability in Marine Finfish Aquaculture

Frontiers in Marine Science ◽

10.3389/fmars.2021.666662 ◽

2021 ◽

Vol 8 ◽

Author(s):

Carlos Brais Carballeira Braña ◽

Kristine Cerbule ◽

Paula Senff ◽

Insa Kristina Stolz

Keyword(s):

Food Production ◽

Disease Outbreaks ◽

Industry Environment ◽

Main Factors ◽

Coastal Space ◽

Ecological Concern ◽

The Relationship ◽

Finfish Aquaculture ◽

Aquaculture is one of the fastest growing food production sectors and has great potential for food security and livelihoods. However, it generates concerning consequences for the environment, including chemical and biological pollution, disease outbreaks, unsustainable feeds and competition for coastal space. Recent investigations are focusing on sustainable techniques (e.g., polyculture, offshore facilities) to improve the relationship between the industry, environment and society. This review provides an overview of the main factors of ecological concern within marine finfish aquaculture, their interactions with the environment, and highlights sustainable alternatives that are currently in use or development. Adequate environmental monitoring and location of farms, the reduction and exploitation of wastes and chemicals being used is crucial to ensure the growth and continuity of aquaculture production.

Systematic Mapping of Research on Farm-Level Sustainability in Finfish Aquaculture

Sustainability ◽

10.3390/su12239985 ◽

2020 ◽

Vol 12 (23) ◽

pp. 9985

Author(s):

Stefan Gunnarsson ◽

Katarina Arvidsson Segerkvist ◽

Torun Wallgren ◽

Per Hjelmstedt ◽

Ulf Sonesson ◽

...

Keyword(s):

Three Dimensions ◽

Human Consumption ◽

Social Dimensions ◽

Systematic Mapping ◽

Farm Level ◽

Global Environmental ◽

On Farm ◽

Finfish Aquaculture ◽

The sustainability of future finfish aquaculture needs to be improved to meet global environmental challenges. Global fish aquaculture production has expanded significantly recently, due to the increased demand for fish for human consumption. Therefore, it is important to mitigate challenges to the sustainability of the sector, such as pollution and depletion of natural resources. In this study, we systematically mapped the scientific literature on farm-level sustainability in fish aquaculture. The concept of sustainability was considered holistically, covering its economic, environmental and social dimensions, each consisting of a range of different aspects that may contradict or reinforce each other. Literature published between January 2000 and August 2020 with the geographical focus on Europe, Northern America and Australia–New Zealand was included. The search resulted in a total of 287 hits, but after the exclusion of articles that did not match the scope, only 17 papers remained for the systematic mapping. Of these, five papers covered all three dimensions of sustainability. Economic sustainability was addressed in 10 papers, environmental sustainability in 13 papers and social sustainability in 12 papers. This systematic mapping provides an important foundation for discussions and prioritisations of future actions to increase knowledge on farm-level sustainability in finfish aquaculture.

MARICULTURE DEVELOPMENT IN INDONESIA: Prospects and Constraints

Indonesian Aquaculture Journal ◽

10.15578/iaj.5.2.2010.187-201 ◽

2010 ◽

Vol 5 (2) ◽

pp. 187 ◽

Cited By ~ 2

Author(s):

Michael A. Rimmer

Keyword(s):

Production Systems ◽

Current Status ◽

Efficient Production ◽

Foreign Earnings ◽

Seed Supply ◽

Spiny Lobsters ◽

Seafood Products ◽

The Government ◽

Mariculture is an important component of Indonesian fisheries and aquaculture production, directly contributing an estimated US$ 320 million in 2008. Because most mariculture production is focussed on producing for export markets, mariculture production is an important source of foreign earnings for the Indonesian economy. This paper reviews the current status and prospects for continuing development of mariculture in Indonesia. Currently the major mariculture commodity in Indonesia is seaweed for carrageenan production. Seaweed production accounts for 98% of total Indonesian mariculture production and 84% of value. The other major commodity groups are marine finfish and pearl oysters. Commodities being developed for mariculture in Indonesia include abalone and spiny lobsters. Prospects for continued development of mariculture in Indonesia appear positive. Indonesia has several advantages for mariculture development, including many potential mariculture sites, a stable tropical climate, and does not suffer from cyclonic storms. The Government of Indonesia is planning to increase aquaculture production substantially over the next four years, including mariculture production. Globally, demand for seafood products is expanding due to increasing population and increased per capita consumption of fish products. Constraints to the continued development of mariculture in Indonesia include: limited seed supply, particularly of species which cannot be economically produced in hatcheries, such as spiny lobsters; need to develop more efficient production systems for some marine finfish; the need to improve environmental sustainability by improving feeds and reducing environmental impacts; and market issues relating to environmental sustainability.

Optimization of Macroalgal Density and Salinity for Nutrient Removal by Caulerpa lentillifera from Aquaculture Effluent

Processes ◽

10.3390/pr7050303 ◽

2019 ◽

Vol 7 (5) ◽

pp. 303 ◽

Cited By ~ 3

Author(s):

B.V.A.S. Manori Bambaranda ◽

Nophea Sasaki ◽

Anong Chirapart ◽

Krishna R. Salin ◽

Takuji W. Tsusaka

Keyword(s):

Nutrient Uptake ◽

Caulerpa Lentillifera ◽

Salinity Levels ◽

Linear Effects ◽

Excessive Nutrients ◽

Positive Effect ◽

Aquaculture Production ◽

Aquaculture Effluent

Determining the optimum levels of macroalgal density and salinity for removing aquaculture effluent has gained increasing research interest in recent years because of the growing concerns over environmental sustainability. Here, we determined the effects of macroalgal density and salinity on the uptake of NO2−, NO3−, NH3, and PO43− by Caulerpa lentillifera from the effluent of Poecilia latipinna using spectrophotometry. Laboratory experiments were conducted to measure nutrient uptake at five different macroalgal density levels (10, 20, 30, 40, and 50 g/L) and three salinity levels (20, 30, and 40 ppt) with and without aeration. Quadratic regression analysis revealed significant nonlinear and linear effects of macroalgal density on the uptake of NO2−, NO3−, NH3, and PO43−, where the maximum uptake was predicted to occur at the macroalgal densities of 31.6, 33.3, 50.0, and 20.0 g/L, respectively. Likewise, the effects of salinity on the uptake of NO2−, NO3−, NH3, and PO43− were significant and nonlinear where the maximum uptake was predicted to occur at the salinity levels of 29.1, 30.7, 29.5, and 29.5 ppt, respectively. The result of the effects of aeration was mixed but somewhat indicated a positive effect on the nutrient uptake within the 24 h period. Our results could help aquaculturists to minimize the excessive nutrients by C. lentillifera from aquaculture effluent while achieving long-term sustainable aquaculture production.

Aquaculture Production and Its Environmental Sustainability in Thailand: Challenges and Potential Solutions

Sustainability ◽

10.3390/su12052010 ◽

2020 ◽

Vol 12 (5) ◽

pp. 2010 ◽

Cited By ~ 6

Author(s):

Tiptiwa Sampantamit ◽

Long Ho ◽

Carl Lachat ◽

Nantida Sutummawong ◽

Patrick Sorgeloos ◽

...

Keyword(s):

Environmental Impacts ◽

Management Strategies ◽

Habitat Destruction ◽

Extensive Literature ◽

Aquatic Product ◽

Healthy Diets ◽

Management Approaches ◽

Though aquaculture plays an important role in providing foods and healthy diets, there are concerns regarding the environmental sustainability of prevailing practices. This study examines the trends and changes in fisheries originating from aquaculture production in Thailand and provides insights into such production’s environmental impacts and sustainability. Together with an extensive literature review, we investigated a time series of Thai aquaculture production data from 1995 to 2015. Overall, Thai aquaculture production has significantly increased during the last few decades and significantly contributed to socio-economic development. Estimates of total aquaculture production in Thailand have gradually grown from around 0.6 to 0.9 million tons over the last twenty years. Farmed shrimp is the main animal aquatic product, accounting for an estimated 40% of total yields of aquaculture production, closely followed by fish (38%) and mollusk (22%). Estimates over the past decades indicate that around 199470 ha of land is used for aquaculture farming. Out of the total area, 61% is used for freshwater farms, and 39% is used for coastal farms. However, this industry has contributed to environmental degradation, such as habitat destruction, water pollution, and ecological effects. Effective management strategies are urgently needed to minimize the environmental impacts of aquaculture and to ensure it maximally contributes to planetary health. Innovative and practical solutions that rely on diverse technology inputs and smart market-based management approaches that are designed for environmentally friendly aquaculture farming can be the basis for viable long-term solutions for the future.