Expert Knowledge and Perceptions about the Ecosystem Services and Natural Values of Hungarian Fishpond Systems

Palásti, Péter; Kiss, Márton; Gulyás, Ágnes; Kerepeczki, Éva

doi:10.3390/w12082144

Cited by 6 publications

(7 citation statements)

References 42 publications

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“…For example, fishpond and river restoration in Northern China was found to increase the diversity of plankton as well as biomass and quality of fish, leading to a higher selling price and economic profit (Mi et al, 2015). In other locations, such as Bangladesh, Hungary, and the Czech Republic, fishponds are being considered in land use planning as a way to restore some of the natural values and ecosystem services endangered by climate change (Palásti et al, 2020; Sychra & Adámek, 2011; Yu et al, 2020). Overall, recovering and restoring Indigenous aquaculture systems globally could transform modern aquaculture into locally adapted systems that can benefit ecosystem health and community food security (Costa‐Pierce, 2022).…”

Section: Discussionmentioning

confidence: 99%

Restoration of an Indigenous aquaculture system can increase reef fish density and fisheries harvest in Hawai‘i

Innes‐Gold,

Madin,

Stokes

et al. 2024

Ecosphere

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While aquaculture is increasingly considered a globally important source of protein, growing fish for human consumption is not new. Indigenous aquaculture systems, such as loko i‘a (fishponds), were successfully implemented in ancient Hawai‘i and represent a technological advancement designed to sustain a growing human population while maintaining—instead of supplanting—natural ecosystem function in the process of increasing food availability. Biocultural restoration efforts in Hawai‘i, aimed at revitalizing Indigenous stewardship, have included restoration of loko i‘a to sustainably increase the availability of local seafood. While it is clear from historical accounts that loko i‘a can augment fish within estuaries, their role as a nursery ground that supplements surrounding fish populations and fisheries harvest (i.e., providing spillover) remains unstudied in the current literature. This study aimed to test the extent to which loko i‘a restoration can supplement fish populations and fisheries harvest both inside the loko i‘a and in the surrounding waters. A food web model was constructed representing nutrients, phytoplankton, fish, and fisheries in three distinct habitats. The model, set in Kāne‘ohe Bay, O‘ahu, Hawai‘i, revealed that there were interactive effects of the area under loko i‘a management, bay fishing effort, and fish dispersal rates on fish density and fisheries harvest. We found that increasing the area under loko i‘a management not only increased loko i‘a fish density and fisheries harvest but also created the potential to supplement bay fish populations and fisheries harvest under certain scenarios. We also identified a trade‐off whereby at high fish dispersal rates, a larger area under loko i‘a management provided maximal benefits to the bay fish population and fisheries harvest, while at low fish dispersal rates, a smaller area under loko i‘a management was more beneficial to bay fish populations and harvest. As expected, loko i‘a also created a surplus of fish within the pond. Our results support the idea that restoration of Indigenous aquaculture systems can positively impact conservation efforts and food security by increasing local fish availability, through both direct production and supplementation of surrounding fish stocks.

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Section: Discussionmentioning

confidence: 99%

Restoration of an Indigenous aquaculture system can increase reef fish density and fisheries harvest in Hawai‘i

Innes‐Gold,

Madin,

Stokes

et al. 2024

Ecosphere

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“…The objective is to maintain ecosystem services provided by the natural ecosystem and to provide new services via aquaculture activities (see a list in ref 56). This includes the role of fish ponds in retaining water, recycling organic nutrients, and providing fertilisers for adjacent crops 57–59 . For extensive pond systems, some of these services (e.g., providing fertilisers and habitats for biodiversity) depend strongly on pond management practices and thus aquaculture activities 60–62 .…”

Section: First Principle: Safeguarding and Regenerating The Health Of...mentioning

confidence: 99%

“…This includes the role of fish ponds in retaining water, recycling organic nutrients, and providing fertilisers for adjacent crops. [57][58][59] For extensive pond systems, some of these services (e.g., providing fertilisers and habitats for biodiversity) depend strongly on pond management practices and thus aquaculture activities. [60][61][62] Ecosystem services of marine aquaculture systems are also well documented, especially those provided by extractive marine species 63,64 such as nutrient removal by bivalves or seaweed.…”

Section: Regenerative Practices and Systemsmentioning

confidence: 99%

Transforming sustainable aquaculture by applying circularity principles

Chary,

van Riel,

Muscat

et al. 2023

Reviews in Aquaculture

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A circular economy is considered one way to reduce environmental impacts of human activities, by more efficient use of resources and recovery, resulting in less waste and emissions compared to linear take‐make‐dispose systems. Muscat et al. developed five ecological principles to guide biomass use towards a circular economy. A few studies have demonstrated environmental benefits of applying these principles to land‐based food systems, but to date, these principles have not been explored in aquaculture. The current study expands on these principles and provides a narrative review to (i) translate them to aquaculture, while identifying implications for the main species and production systems, and (ii) identify the main pathways to make aquaculture more circular. We show that the underlying concepts of the ‘safeguard’, ‘entropy’, and ‘recycle’ principles have been well researched and sometimes well implemented. In contrast, the ‘avoid’ and ‘prioritise’ principles have been explored much less; doing so would provide an opportunity to decrease environmental impacts of aquaculture at the food‐system level. One example is prioritising the production of species that contribute to food and nutrition security, have low environmental impacts and thinking at wider food system scale to avoid feed‐food competition in aquaculture. We identified six priorities that could make aquaculture more circular: (i) increase production and demand for the most essential species, (ii) decrease food loss and waste at farm and post‐harvest stages, (iii) support nutrient recycling practices at multiple scales, (iv) adapt aquafeed formulations, (v) inform consumers about benefits of species of low trophic levels and other environmentally friendly aquatic foods, and (vi) address urgent research gaps.

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“…White Lake's most relevant ecosystem services were identified in a preliminary study [34], by conducting structured interviews [35] with the representatives of every major stakeholder group related to the pond system. Gathering information through interviews was necessary as there was no previous data in this topic.…”

Section: List Of Ecosystem Servicesmentioning

confidence: 99%

“…Understanding how suitable a habitat is to provide certain ecosystem services is a key element to avoid overuse and reach long term sustainability [41]. To assess the potential abilities of White Lake's main habitat classes in the provision of the listed ecosystem services, we conducted a matrix-based participatory mapping [42], based on structured interviews with all the local key informants who have previously participated in the identification of the services [34]. As a reminder, every interview started with the introduction of our goals and the final list of White Lake's ecosystem services.…”

Section: Assessing White Lake's Potential Service Providing Capabilitiesmentioning

confidence: 99%

Mapping Freshwater Aquaculture’s Diverse Ecosystem Services with Participatory Techniques: A Case Study from White Lake, Hungary

2022

Self Cite

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Freshwater aquaculture has a significant role in fish production and biodiversity conservation. Due to climate change, however, the sustenance of fish farms became more challenging, endangering both people and natural values. The establishment of multi-purpose fishpond systems, utilizing ecosystem services besides fish production, could serve as a long-term solution for this problem. However, the lack of knowledge about fishponds’ ecosystem services creates an obstacle in the process. We would like to lower this barrier by mapping 13 different ecosystem services of White Lake, one of the most prominent fishpond systems in Hungary. The results of two different participatory mapping techniques indicated that standing waters, reedy areas, and canals, possessed the highest potential values in the provision of the listed ecosystem services, marking them as the most important areas for future developments. In the case of current sources, local experts linked the highest values to reedy areas and lookout towers. Participatory mapping also indicated that microclimate regulation and bird watching were the most widely used ecosystem services after fish production. By collecting and visualizing experts’ spatial data about White Lakes’ ecosystem services, our unique paper has the potential to serve future decision-making and provide a basis for further studies on this topic.

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Expert Knowledge and Perceptions about the Ecosystem Services and Natural Values of Hungarian Fishpond Systems

Cited by 6 publications

References 42 publications

Restoration of an Indigenous aquaculture system can increase reef fish density and fisheries harvest in Hawai‘i

Restoration of an Indigenous aquaculture system can increase reef fish density and fisheries harvest in Hawai‘i

Transforming sustainable aquaculture by applying circularity principles

Mapping Freshwater Aquaculture’s Diverse Ecosystem Services with Participatory Techniques: A Case Study from White Lake, Hungary

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