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Your search keyword '"Meggs, Llewelyn"' showing total 3 results
Start Over Author "Meggs, Llewelyn" Topic coral reefs
3 results on '"Meggs, Llewelyn"'

1. Directed conservation of the world's reef sharks and rays.

Author

Goetze JS, Heithaus MR, MacNeil MA, Harvey E, Simpfendorfer CA, Heupel MR, Meekan M, Wilson S, Bond ME, Speed CW, Currey-Randall LM, Fisher R, Sherman CS, Kiszka JJ, Rees MJ, Udyawer V, Flowers KI, Clementi GM, Asher J, Beaufort O, Bernard ATF, Berumen ML, Bierwagen SL, Boslogo T, Brooks EJ, Brown JJ, Buddo D, Cáceres C, Casareto S, Charloo V, Cinner JE, Clua EEG, Cochran JEM, Cook N, D'Alberto BM, de Graaf M, Dornhege-Lazaroff MC, Fanovich L, Farabaugh NF, Fernando D, Ferreira CEL, Fields CYA, Flam AL, Floros C, Fourqurean V, Barcia LG, Garla R, Gastrich K, George L, Graham R, Hagan V, Hardenstine RS, Heck SM, Heithaus P, Henderson AC, Hertler H, Hueter RE, Johnson M, Jupiter SD, Kaimuddin M, Kasana D, Kelley M, Kessel ST, Kiilu B, Kyne F, Langlois T, Lawe J, Lédée EJI, Lindfield S, Maggs JQ, Manjaji-Matsumoto BM, Marshall A, Matich P, McCombs E, McLean D, Meggs L, Moore S, Mukherji S, Murray R, Newman SJ, O'Shea OR, Osuka KE, Papastamatiou YP, Perera N, Peterson BJ, Pina-Amargós F, Ponzo A, Prasetyo A, Quamar LMS, Quinlan JR, Razafindrakoto CF, Rolim FA, Ruiz-Abierno A, Ruiz H, Samoilys MA, Sala E, Sample WR, Schärer-Umpierre M, Schoen SN, Schlaff AM, Smith ANH, Sparks L, Stoffers T, Tanna A, Torres R, Travers MJ, Valentin-Albanese J, Warren JD, Watts AM, Wen CK, Whitman ER, Wirsing AJ, Zarza-González E, and Chapman DD

Subjects
Animals, Conservation of Natural Resources methods, Sharks, Skates, Fish, Coral Reefs, Fisheries
Abstract

Many shark populations are in decline around the world, with severe ecological and economic consequences. Fisheries management and marine protected areas (MPAs) have both been heralded as solutions. However, the effectiveness of MPAs alone is questionable, particularly for globally threatened sharks and rays ('elasmobranchs'), with little known about how fisheries management and MPAs interact to conserve these species. Here we use a dedicated global survey of coral reef elasmobranchs to assess 66 fully protected areas embedded within a range of fisheries management regimes across 36 countries. We show that conservation benefits were primarily for reef-associated sharks, which were twice as abundant in fully protected areas compared with areas open to fishing. Conservation benefits were greatest in large protected areas that incorporate distinct reefs. However, the same benefits were not evident for rays or wide-ranging sharks that are both economically and ecologically important while also threatened with extinction. We show that conservation benefits from fully protected areas are close to doubled when embedded within areas of effective fisheries management, highlighting the importance of a mixed management approach of both effective fisheries management and well-designed fully protected areas to conserve tropical elasmobranch assemblages globally., (© 2024. Crown.)

Published
2024
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2. Widespread diversity deficits of coral reef sharks and rays.

Author

Simpfendorfer CA, Heithaus MR, Heupel MR, MacNeil MA, Meekan M, Harvey E, Sherman CS, Currey-Randall LM, Goetze JS, Kiszka JJ, Rees MJ, Speed CW, Udyawer V, Bond ME, Flowers KI, Clementi GM, Valentin-Albanese J, Adam MS, Ali K, Asher J, Aylagas E, Beaufort O, Benjamin C, Bernard ATF, Berumen ML, Bierwagen S, Birrell C, Bonnema E, Bown RMK, Brooks EJ, Brown JJ, Buddo D, Burke PJ, Cáceres C, Cambra M, Cardeñosa D, Carrier JC, Casareto S, Caselle JE, Charloo V, Cinner JE, Claverie T, Clua EEG, Cochran JEM, Cook N, Cramp JE, D'Alberto BM, de Graaf M, Dornhege MC, Espinoza M, Estep A, Fanovich L, Farabaugh NF, Fernando D, Ferreira CEL, Fields CYA, Flam AL, Floros C, Fourqurean V, Gajdzik L, Barcia LG, Garla R, Gastrich K, George L, Giarrizzo T, Graham R, Guttridge TL, Hagan V, Hardenstine RS, Heck SM, Henderson AC, Heithaus P, Hertler H, Padilla MH, Hueter RE, Jabado RW, Joyeux JC, Jaiteh V, Johnson M, Jupiter SD, Kaimuddin M, Kasana D, Kelley M, Kessel ST, Kiilu B, Kirata T, Kuguru B, Kyne F, Langlois T, Lara F, Lawe J, Lédée EJI, Lindfield S, Luna-Acosta A, Maggs JQ, Manjaji-Matsumoto BM, Marshall A, Martin L, Mateos-Molina D, Matich P, McCombs E, McIvor A, McLean D, Meggs L, Moore S, Mukherji S, Murray R, Newman SJ, Nogués J, Obota C, Ochavillo D, O'Shea O, Osuka KE, Papastamatiou YP, Perera N, Peterson B, Pimentel CR, Pina-Amargós F, Pinheiro HT, Ponzo A, Prasetyo A, Quamar LMS, Quinlan JR, Reis-Filho JA, Ruiz H, Ruiz-Abierno A, Sala E, de-León PS, Samoilys MA, Sample WR, Schärer-Umpierre M, Schlaff AM, Schmid K, Schoen SN, Simpson N, Smith ANH, Spaet JLY, Sparks L, Stoffers T, Tanna A, Torres R, Travers MJ, van Zinnicq Bergmann M, Vigliola L, Ward J, Warren JD, Watts AM, Wen CK, Whitman ER, Wirsing AJ, Wothke A, Zarza-González E, and Chapman DD

Subjects
Animals, Humans, Fisheries, Biodiversity, Conservation of Natural Resources, Coral Reefs, Sharks, Skates, Fish, Extinction, Biological
Abstract

A global survey of coral reefs reveals that overfishing is driving resident shark species toward extinction, causing diversity deficits in reef elasmobranch (shark and ray) assemblages. Our species-level analysis revealed global declines of 60 to 73% for five common resident reef shark species and that individual shark species were not detected at 34 to 47% of surveyed reefs. As reefs become more shark-depleted, rays begin to dominate assemblages. Shark-dominated assemblages persist in wealthy nations with strong governance and in highly protected areas, whereas poverty, weak governance, and a lack of shark management are associated with depauperate assemblages mainly composed of rays. Without action to address these diversity deficits, loss of ecological function and ecosystem services will increasingly affect human communities.

Published
2023
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3. Global status and conservation potential of reef sharks.

Author

MacNeil MA, Chapman DD, Heupel M, Simpfendorfer CA, Heithaus M, Meekan M, Harvey E, Goetze J, Kiszka J, Bond ME, Currey-Randall LM, Speed CW, Sherman CS, Rees MJ, Udyawer V, Flowers KI, Clementi G, Valentin-Albanese J, Gorham T, Adam MS, Ali K, Pina-Amargós F, Angulo-Valdés JA, Asher J, Barcia LG, Beaufort O, Benjamin C, Bernard ATF, Berumen ML, Bierwagen S, Bonnema E, Bown RMK, Bradley D, Brooks E, Brown JJ, Buddo D, Burke P, Cáceres C, Cardeñosa D, Carrier JC, Caselle JE, Charloo V, Claverie T, Clua E, Cochran JEM, Cook N, Cramp J, D'Alberto B, de Graaf M, Dornhege M, Estep A, Fanovich L, Farabaugh NF, Fernando D, Flam AL, Floros C, Fourqurean V, Garla R, Gastrich K, George L, Graham R, Guttridge T, Hardenstine RS, Heck S, Henderson AC, Hertler H, Hueter R, Johnson M, Jupiter S, Kasana D, Kessel ST, Kiilu B, Kirata T, Kuguru B, Kyne F, Langlois T, Lédée EJI, Lindfield S, Luna-Acosta A, Maggs J, Manjaji-Matsumoto BM, Marshall A, Matich P, McCombs E, McLean D, Meggs L, Moore S, Mukherji S, Murray R, Kaimuddin M, Newman SJ, Nogués J, Obota C, O'Shea O, Osuka K, Papastamatiou YP, Perera N, Peterson B, Ponzo A, Prasetyo A, Quamar LMS, Quinlan J, Ruiz-Abierno A, Sala E, Samoilys M, Schärer-Umpierre M, Schlaff A, Simpson N, Smith ANH, Sparks L, Tanna A, Torres R, Travers MJ, van Zinnicq Bergmann M, Vigliola L, Ward J, Watts AM, Wen C, Whitman E, Wirsing AJ, Wothke A, Zarza-Gonzâlez E, and Cinner JE

Subjects
Animals, Geographic Mapping, Population Density, Socioeconomic Factors, Conservation of Natural Resources statistics & numerical data, Coral Reefs, Ecosystem, Fisheries economics, Fisheries statistics & numerical data, Sharks physiology
Abstract

Decades of overexploitation have devastated shark populations, leaving considerable doubt as to their ecological status 1,2 . Yet much of what is known about sharks has been inferred from catch records in industrial fisheries, whereas far less information is available about sharks that live in coastal habitats 3 . Here we address this knowledge gap using data from more than 15,000 standardized baited remote underwater video stations that were deployed on 371 reefs in 58 nations to estimate the conservation status of reef sharks globally. Our results reveal the profound impact that fishing has had on reef shark populations: we observed no sharks on almost 20% of the surveyed reefs. Reef sharks were almost completely absent from reefs in several nations, and shark depletion was strongly related to socio-economic conditions such as the size and proximity of the nearest market, poor governance and the density of the human population. However, opportunities for the conservation of reef sharks remain: shark sanctuaries, closed areas, catch limits and an absence of gillnets and longlines were associated with a substantially higher relative abundance of reef sharks. These results reveal several policy pathways for the restoration and management of reef shark populations, from direct top-down management of fishing to indirect improvement of governance conditions. Reef shark populations will only have a high chance of recovery by engaging key socio-economic aspects of tropical fisheries.

Published
2020
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