Assessment of Regional Fisheries Management Organizations Efforts toward the Precautionary Approach and Science-Based Stock Management and Compliance Measures

Ogawa, Mervin; Reyes, Joseph Anthony L.

doi:10.3390/su13158128

Cited by 5 publications

(3 citation statements)

References 60 publications

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“…The use of precautionary management has proven important for rebuilding Black teatfish stocks in Torres Strait. Increasing emphasis on the use of precaution in decision making for fisheries management is recognized as important for all stages of the management process for mitigating uncertainties (Ogawa & Reyes, 2021; Weeks & Berkeley, 2011). This is because a number of uncertainties remain related to the biology of Black teatfish and catch history in Torres Strait.…”

Section: Discussionmentioning

confidence: 99%

Boom and no bust for a teatfish in Torres Strait, Australia from combined forms of western and Indigenous management

Murphy,

Skewes,

Plagányi

2024

Conservat Sci and Prac

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Black teatfish (Holothuria whitmaei) is a high value sea cucumber that has been listed under the Convention on International Trade of Endangered Species (CITES) Appendix II. The Black teatfish fishery in Torres Strait, Australia, is fished solely by Indigenous Torres Strait Islanders. Black teatfish were closed to fishing in 2003, based on the results of stock surveys and concerns of overexploitation. A stock survey in 2009 found the Black teatfish population had recovered substantially but the fishery was again closed after trial openings exceeded catch limits. In line with a new harvest strategy adopted for the fishery in 2019, we conducted a stock survey in 2019–2020 that suggested the stock had recovered sufficiently to support a sustainable catch limit of 20 t. Empowering Indigenous Torres Strait Islanders to use Island custom alongside western management strategies, contributed to the success of a trial opening in 2021. The combination of a harvest strategy developed in consultation with traditional owners, a rigorous scientific survey and trial opening protocols informed by Island custom, supported the CITES positive Non‐Detriment Finding for the Torres Strait Bêche‐de‐mer Fishery. This is a significant example of the successful recovery and ongoing sustainable management of a depleted sea cucumber population.

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Section: Discussionmentioning

confidence: 99%

Boom and no bust for a teatfish in Torres Strait, Australia from combined forms of western and Indigenous management

Murphy,

Skewes,

Plagányi

2024

Conservat Sci and Prac

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“…The ecological consideration includes the condition of the lake over the long term, including siltation, pollution, and the conservation of fisheries biodiversity. A comprehensive understanding of how these aspects interact in time and space are essential and must be given consideration [73]. The connections existing between the ecological, social, and economic aspects are shown in Figure 4, and analysing them in this fashion clearly illustrates the influence and importance of the ecological-economic, socio-ecological, and socio-economic links [61].…”

Section: Prognosis For Sustainable Fisheries Managementmentioning

confidence: 99%

Socio-Economic and Environmental Challenges of Small-Scale Fisheries: Prognosis for Sustainable Fisheries Management in Lake Kariba, Zambia

2023

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The Lake Kariba fishery is of regional importance; it accounts for 35% of the total Zambian fish production. However, emerging evidence in the recent decades suggests that the fishery is facing socio-economic and environmental challenges. Using Ostrom’s framework for analysing socio-ecological systems, we examined the social, economic, and environmental problems faced by the fishing communities in Lake Kariba. The framework links various social, economic, and ecological factors to devise a sustainable fisheries management plan. A combination of survey questionnaires, focus group discussions, observations, and key informant interviews were used to assess this sustainability challenge. The data collected were subjected to bivariate and descriptive analysis. The results obtained did not show a significant decline in fish production over the past 13 years (R2 Linear = 0.119, p = 0.248). However, the experts and the fishers have reported declining trends in valuable fish species such as Oreochromis mortimeri, compounded by the increased fishing efforts (X2 = 180.14, p value = ˂ 0.00001). The key threats identified include: overfishing, weak institutions, and the introduction of invasive fish species such as Oreochromis niloticus. This situation has raised fears of fish depletion among the stakeholders. Based on these results, we recommend stronger institutional collaboration among the stakeholders in the riparian states and education that illustrates the global value of fisheries for food security and biodiversity conservation in pursuing the United Nations Sustainable Development Goals.

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“…Science-based fishery management (SBFM) is a management framework where decision-making process is based on the best available science (BAS) (Ogawa & Reyes, 2021;Su et al, 2021) regardless of the strength and limitations of the methodologies implemented (reviewed by Breen, 1992): the pāua management system can be considered to be a sciencebased one. Nonetheless, given the increase in scientific literature on economically important species in New Zealand and especially genomics-based studies (Ashby, 2019;Koot et al, 2021;Holland et al, 2022;Papa et al, 2022, current thesis), the New Zealand fishery management system framework has potential to be reformed to integrate the use of this new type of data for pāua with the fishery data currently in use.…”

Section: Integrated Interpretation Of the Main Results And The Impact...mentioning

confidence: 99%

Population genetic and genomic approaches for the management of the blackfoot paua, Haliotis iris Gmelin 1791, within the genus context

Trauzzi

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The blackfoot pāua, Haliotis iris Gmelin 1791 is one of three endemic species of abalone (Haliotis spp.) found in New Zealand. This marine gastropod is a taonga (highly prized or treasured) species and a traditional kai moana (seafood) in the Māori culture. The increase in commercial interest around the exploitation of pāua shells and meat in the early 1960s led to the development of fishing restrictions and in 1986/87 and to the pāua fishery management system based on quota management areas (QMAs). In 2016, the Kaikōura earthquake generated a coastal uplift along the Kaikōura region where one of the country’s most productive pāua fisheries is located. Pronounced mortality of seaweed and marine intertidal invertebrates was reported in the affected region. Subsequently, the pāua fishery along approximately 110 km of coastline and encompassing two QMAs (PAU3A and PAU7) was closed for 5 years with substantial losses in annual revenue. It was reopened for 3 months on the 1st December 2021. The fishery was closed again at the end of February 2022 and at the time of writing remains closed. The goals of this thesis are to: 1) identify patterns of global population genetic structure and genetic connectivity within the genus Haliotis by reviewing the published literature to provide context to the findings obtained for the blackfoot pāua from New Zealand; 2) describe the population genetic connectivity, genetic diversity and population genetic structure of pāua populations from the Kaikōura region before and after the 2016 earthquake for the first time through genotyping-by-sequencing (GBS)-derived molecular markers (single nucleotide polymorphisms - SNPs); 3) investigate potential genotypic-environmental associations (GEAs) between the variation at microsatellite markers and environmental variation for pāua populations at the national scale; and 4) identify significant GEAs between neutral genetic variation at SNP loci for pāua at Kaikōura and environmental (i.e., ecological and oceanographic data) data before and after the 2016 earthquake. Abalone are widely understudied and the literature is strongly biased towards certain species of economic relevance in developed countries where most biological stocks do not correspond to fishing management units. Abalone species worldwide are generally characterised by weak population genetic structure that can be explained by the geomorphology of the coasts (i.e., headlands, bays) and correlated physical oceanography (i.e., ocean currents and upwelling). For the blackfoot pāua from Kaikōura, weak genetic structure (differentiation from other sites) was found at Cape Campbell, a headland, the northernmost site in the region and a well-known biogeographic boundary in New Zealand. High levels of gene flow and the large effective population sizes (Ne) of all populations in the Kaikōura region may have counterbalanced the effects of the Kaikōura earthquake on this species. Based on the current dataset, no direct effect of the 2016 earthquake was evident for the pāua populations from Kaikōura. Differences in the genetic connectivity patterns between adults and juveniles in PAU3A were detected. This finding could be explained by different scenarios including but not limited to local recruitment, variability in ocean currents and/or cohort effect. Collection of long-term genomic data may further clarify the stability of this pattern and its possible causes. Seascape genetics revealed the association between the genetic differentiation of pāua at Cape Campbell with higher sedimentation levels and higher sea surface temperatures (SST) that may act as barriers to gene flow for pāua to other (regional) sites. Chlorophyll-a and SST were also associated with patterns of genetic connectivity in juveniles in PAU3A and loosely followed a geographic pattern. Multiple estimates of SST, proxies for ocean currents, oceanic fronts and productivity levels of the waters around New Zealand, were significantly associated with variation at microsatellite loci for pāua at the national scale. This research reports the successful development of high throughput genomic data and its applications to pāua management in New Zealand at regional scales and the use of novel genetic analyses to pāua at the national scale. The overlap between the genetic split detected for pāua at Cape Campbell and the original boundary between the two QMAs (based on the boundary between iwi tribes) denoted how the QMS in New Zealand took into consideration Māori stewardship over marine resources since its beginning. The detection of a genetic break at small spatial scales supports the ongoing shift towards a finer scale fishery management in New Zealand and suggests the implementation of advanced genomic tools to inform management decisions. Seascape genetics analyses carried out in this thesis highlighted a relationship between genetic and environmental variations for pāua at both small and large spatial scales that could inform restoration efforts as well as focus on stocks at potential risk. Increased levels of sedimentation and high SST were recorded in the Marlborough region where pāua stocks are declining. Attention to pāua stocks in areas where these two environmental factors are increasing is suggested especially considering climate global change. The integration of genomic tools into fishery management represents the next big advancement in the long-term sustainable exploitation of pāua stocks in New Zealand.

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Assessment of Regional Fisheries Management Organizations Efforts toward the Precautionary Approach and Science-Based Stock Management and Compliance Measures

Cited by 5 publications

References 60 publications

Boom and no bust for a teatfish in Torres Strait, Australia from combined forms of western and Indigenous management

Boom and no bust for a teatfish in Torres Strait, Australia from combined forms of western and Indigenous management

Socio-Economic and Environmental Challenges of Small-Scale Fisheries: Prognosis for Sustainable Fisheries Management in Lake Kariba, Zambia

Population genetic and genomic approaches for the management of the blackfoot paua, Haliotis iris Gmelin 1791, within the genus context

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