Tropical marine fisheries and the future of coral reefs: a brief review with emphasis on Southeast Asia

McManus, John

doi:10.1007/s003380050248

Cited by 131 publications

(77 citation statements)

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“…Well-managed reef fisheries are rare [3], and exacerbated by the fact that the majority of coral reefs occur in developing countries where restricting fishing activity will impose significant societal and economic costs on poor coastal communities [1,[4][5][6]. The combined pressures of dwindling fish stocks and the need to earn a livelihood have led many fishers to engage in ‗outright resource destruction' [7], a behavior which is consistent with an inability to delay economic gratification.…”

Section: Introductionmentioning

confidence: 99%

Low Discounting Behavior among Small-Scale Fishers in Fiji and Sabah, Malaysia

Teh

Sumaila

2011

Sustainability

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Understanding the socio-economic factors that are associated with fishers' willingness to delay gratification may be useful for designing appropriate fisheries management and conservation policies. We aim to identify the predictors of low discounting behaviour among fishers, which is analogous to having a longer-term outlook. We base our empirical study on two small-scale tropical reef fisheries in Sabah, Malaysia, and Fiji. We use an experimental approach to identify fishers with low discount rates, and then use a logistic regression model to identify predictors of low discount rates. We find that 42% of the respondents have low discount rates, and that site and village level variables are significant predictors of low discount rates. Within Sabah and Fiji, boat ownership and relative catch differentiate low discounting from non-low discounting fishers, but these variables have contradictory effects in Sabah and Fiji. Overall, our results imply that a substantial proportion of reef fishers may be willing to engage in conservation initiatives; however, local socio-cultural, economic, and ecological conditions have to be considered first during the process of designing management interventions.

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Section: Introductionmentioning

confidence: 99%

Low Discounting Behavior among Small-Scale Fishers in Fiji and Sabah, Malaysia

Teh

Sumaila

2011

Sustainability

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“…In the tropics, the biodiversity of shallow-water coral reefs has been the focus of concern and research, yet much of the world's coral is found on shelf areas in benthic communities that are non-emergent and often 10s of metres below the surface (McManus 1997, Spalding & Grenfell 1997. These 'live bottom' communities occur on coarse sediments, palaeo-reef edges, or other outcrops and include sponges, gorgonians, alcyonarians, corals and marine plants in a wide variety of sizes and densities (Birtles & Arnold 1988, McManus 1997, Carruthers et al 2002.…”

Section: Introductionmentioning

confidence: 99%

“…These 'live bottom' communities occur on coarse sediments, palaeo-reef edges, or other outcrops and include sponges, gorgonians, alcyonarians, corals and marine plants in a wide variety of sizes and densities (Birtles & Arnold 1988, McManus 1997, Carruthers et al 2002. Such habitats are undoubtedly a major, but poorly known, reservoir of marine biodiversity, and their structural complexity provides habitat for a variety of other species.…”

Section: Introductionmentioning

confidence: 99%

Inter-reef vertebrate communities of the Great Barrier Reef Marine Park determined by baited remote underwater video stations

Cappo¹,

De’ath²,

Speare³

2007

Mar. Ecol. Prog. Ser.

135

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A fleet of baited remote underwater video stations was set in lagoonal and inter-reef waters of the Great Barrier Reef Marine Park, across 14°of latitude and the entire shelf. Counts of the maximum number seen in any one field of view were used to estimate relative abundance of 347 species of bony fishes, cartilaginous fishes and sea snakes. Boosted regression trees were used to assess the influence of depth and location of sampling sites on species richness. Multivariate regression trees and indices of specificity and fidelity (Dufrêne-Legendre indices) were used to distinguish 17 spatially contiguous vertebrate groups within a hierarchy of spatial scales. Location across the shelf and depth had the greatest influence on species richness, with peaks occurring around the ~35 m isobath in the inter-reef waters of the reef matrix, coinciding with shallow banks and shoals. Richness increased slightly toward the equator. Nine terminal vertebrate communities parallel to the coast were distinguished inshore and offshore in deep and shallow water along a latitudinal gradient. There were important community boundaries at Bowen in the south, Townsville in the centre, and Cape Flattery in the north. Latitudinal groupings were most evident inshore. Offshore communities were spatially extensive and separated lagoonal, mid-shelf and outer-shelf sites. Community boundaries were correlated with knowledge of strong gradients in sedimentary and oceanographic processes influenced by the shape of the reef matrix and regional tides and currents.

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“…This pressure is most acute in developing nations in tropical and subtropical regions where aquaculture of seaweeds is often seen as an alternative (and sustainable) economic activity to either growing species that require large inputs of artificial feeds or extractive harvesting in wild fisheries (Pickering et al 2007), both of which have typically had a large impact on the environment and which may be ecologically and economically unsustainable in the long term. Given large ecological pressures on coral reefs as a result of, for example, overfishing and pollution associated with aquaculture of species that require addition of nutrients (McManus 1997, Jackson et al 2001, Hughes et al 2003, Feng et al 2004, Azanza et al 2005, there is considerable ecological as well as socio-economic pressure to identify alternative and more sustainable livelihoods for human coastal populations. Aquaculture species that do not require exogenous inputs of nutrients, such as shellfish (Bell andGervis 1999, Feng et al 2004) and seaweeds (Feng et al 2004, Pickering et al 2007) are attractive on environmental grounds.…”

Section: Intentional Introductionsmentioning

confidence: 99%

Seaweed invasions: conclusions and future directions

Johnson

2007

Botm

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In the introduction of this special issue of Botanica Marina, we established the scope of this topic around a series of questions, which also provided a framework for integrating the different contributions and a means of highlighting deficiencies in knowledge and understanding (Johnson and Chapman 2007). In defining challenges for the future and suggesting how those challenges might best be tackled to optimize returns on research investment, it is useful to revisit those questions under four main headings dealing with species introductions per se, the invasion process, consequences of invasions and human responses to the threat and occurrence of invasion.

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Tropical marine fisheries and the future of coral reefs: a brief review with emphasis on Southeast Asia

Cited by 131 publications

References 1 publication

Low Discounting Behavior among Small-Scale Fishers in Fiji and Sabah, Malaysia

Low Discounting Behavior among Small-Scale Fishers in Fiji and Sabah, Malaysia

Inter-reef vertebrate communities of the Great Barrier Reef Marine Park determined by baited remote underwater video stations

Seaweed invasions: conclusions and future directions

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