Global status and conservation potential of reef sharks

  title={Global status and conservation potential of reef sharks},
  author={M. Aaron MacNeil and Demian D. Chapman and Michelle R. Heupel and Colin A. Simpfendorfer and Michael R. Heithaus and Mark G. Meekan and Euan Sinclair Harvey and Jordan S. Goetze and Jeremy J. Kiszka and Mark E. Bond and Leanne M. Currey-Randall and Conrad W. Speed and C. Samantha Sherman and Matthew J. Rees and Vinay Udyawer and Kathryn I. Flowers and Gina Clementi and Jasmine Valentin-Albanese and Taylor Gorham and Mohamed Shiham Adam and Khadeeja Ali and Fabi{\'a}n Pina-Amarg{\'o}s and Jorge A. Angulo-Vald{\'e}s and Jacob Asher and Laura Garc{\'i}a Barcia and Oc{\'e}ane Beaufort and Cecilie Benjamin and Anthony T. F. Bernard and Michael L. Berumen and Stacy L. Bierwagen and Erika Bonnema and Rosalind M. K. Bown and Darcy Bradley and Edd J. Brooks and J. Jed Brown and Dayne St. A. Buddo and Patrick Burke and Camila C{\'a}ceres and Diego Carde{\~n}osa and Jeffrey C. Carrier and Jennifer E. Caselle and Venkatesh Charloo and Thomas Claverie and Eric E. G. Clua and Jesse E. M. Cochran and Neil Cook and Jessica E. Cramp and Brooke M. D’Alberto and Martin de Graaf and Mareike Dornhege and Andrew J. Estep and Lanya Fanovich and Naomi F. Farabaugh and Daniel Fernando and A Flam and C. Floros and Virginia L. Fourqurean and Ricardo Clapis Garla and Kirk R. Gastrich and Lachlan George and Rory Graham and Tristan L. Guttridge and Royale S Hardenstine and Stephen Heck and Aaron C. Henderson and Heidi Hertler and Robert E. Hueter and Mohini Johnson and Stacy D. Jupiter and Devanshi Kasana and Steven Thomas Kessel and Benedict Kiilu and Taratu Kirata and Baraka Kuguru and Fabian Kyne and Tim J. Langlois and Elodie J. I. L{\'e}d{\'e}e and Steven J. Lindfield and Andrea Luna-Acosta and Jade Maggs and B. Mabel Manjaji‐Matsumoto and Andrea D. Marshall and Philip Matich and Erin McCombs and Dianne L. McLean and Llewelyn Meggs and Stephen K. Moore and Sushmita Mukherji and Ryan Murray and Muslimin Kaimuddin and Stephen J. Newman and Josep Nogu{\'e}s and Clay Okoth Obota and Owen R. O’Shea and Kennedy E. Osuka and Yannis P. Papastamatiou and Nishan Perera and Bradley J. Peterson and Alessandro Ponzo and Andhika Prasetyo and L. M. Sjamsul Quamar and Jessica R Quinlan and Alexei Ruiz-Abierno and Enric Sala and Melita A Samoilys and Michelle T. Sch{\"a}rer-Umpierre and Audrey M Schlaff and Nikola Simpson and Adam N. H. Smith and Lauren Sparks and Akshay Tanna and Rub{\'e}n Torres and Michael J. Travers and Maurits P. M. van Zinnicq Bergmann and Laurent Vigliola and Juney Ward and Alexandra M. Watts and Colin Wen and Elizabeth R. Whitman and Aaron J. Wirsing and Aljoscha Wothke and Esteban Zarza-Gonz{\^a}lez and Joshua E. Cinner},
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… 

Anthropogenic pressures on reef-associated sharks in jurisdictions with and without directed shark fishing

Shark populations have declined across the Caribbean region, with negative associations between shark abundance and human population density, open access to fishing, and proximity to large markets

Shark Conservation – Analysis and Synthesis

A detailed analysis of fishing records has shown that the shark species accessible to global fisheries have been systematically depleted for decades. They were already fished to about 10 percent of

Evaluating artisanal fishing of globally threatened sharks and rays in the Bay of Bengal, Bangladesh

Overall, Bangladesh was found to be a significant contributor to shark and ray catches and trade in the Bay of Bengal region, and a series of recommendations were provided for improving the conservation status of the elasmobranchs in this region.

Drivers of variation in occurrence, abundance, and behaviour of sharks on coral reefs.

The capacity for behavioural metrics to complement existing measures of occurrence and abundance in assessing the potential impact of human activities on shark populations is demonstrated.

Spatial Connectivity and Drivers of Shark Habitat Use Within a Large Marine Protected Area in the Caribbean, The Bahamas Shark Sanctuary

Marine protected areas (MPAs) have emerged as potentially important conservation tools for the conservation of biodiversity and mitigation of climate impacts. Among MPAs, a large percentage has been

Recent expansion of marine protected areas matches with home range of grey reef sharks

The recent implementation of several orders of magnitude larger MPAs in New Caledonia and abroad show that recent Indo-Pacific MPAs are now sufficiently large to protect the home ranges of this species, including males, across its geographical range.

Reef‐wide evidence that the presence of sharks modifies behaviors of teleost mesopredators

. The idea that the presence of sharks impacts the behavior of mesopredatory reef fi shes is con-troversial and lacks clear evidence at reef-wide scales. We compared the abundance and behavior of

Depth and benthic habitat influence shallow and mesophotic predatory fishes on a remote, high-latitude coral reef

Predatory fishes on coral reefs continue to decline globally despite playing key roles in ecosystem functioning. Remote atolls and platform reefs provide potential refugia for predator populations,

Emerging insights on effects of sharks and other top predators on coral reefs

Predation is ubiquitous on coral reefs. Among the most charismatic group of reef predators are the top predatory fishes, including sharks and large-bodied bony fishes. Despite the threat presented by



Reef shark declines in remote atolls highlight the need for multi-faceted conservation action

1. The decline of large-bodied predatory species in the oceans is a concern both from a sustainability perspective and because such species can have important ecological roles. Sharks are

Re-Creating Missing Population Baselines for Pacific Reef Sharks

  • M. NadonJ. Baum R. Brainard
  • Medicine, Biology
    Conservation biology : the journal of the Society for Conservation Biology
  • 2012
Estimates of shark density from towed-diver surveys were substantially lower than published estimates from surveys along small transects, which suggests that density of reef sharks has declined to 3–10% of baseline levels in these areas.

Global economic value of shark ecotourism: implications for conservation

Abstract Amid declining shark populations because of overfishing, a burgeoning shark watching industry, already well established in some locations, generates benefits from shark protection. We

Recovery potential of the world's coral reef fishes

The results demonstrate that crucial ecosystem functions can be maintained through a range of fisheries restrictions, allowing coral reef managers to develop recovery plans that meet conservation and livelihood objectives in areas where marine reserves are not socially or politically feasible solutions.

Remote reefs and seamounts are the last refuges for marine predators across the Indo-Pacific

This work modeled three key predator community attributes: vertebrate species richness, mean maximum body size, and shark abundance as a function of geomorphology, environmental conditions, and human pressures and identified refuges at more than 1,250 km from human markets for body size and for shark abundance.

Higher Abundance of Marine Predators and Changes in Fishers' Behavior Following Spatial Protection within the World's Biggest Shark Fishery

Fisheries are complex social-ecological systems, where managers struggle to balance the socio-economic interests of fishing communities with the biology and ecology of fisheries species. Spatial

Patterns and ecosystem consequences of shark declines in the ocean.

It is shown that the high natural diversity and abundance of sharks is vulnerable to even light fishing pressure, and that large sharks can exert strong top-down forces with the potential to shape marine communities over large spatial and temporal scales.

Decline of coastal apex shark populations over the past half century.

Overexploitation of large apex marine predators is widespread in the world's oceans, yet the timing and extent of declines are poorly understood. Here we reconstruct a unique fisheries-independent

Extinction risk and conservation of the world’s sharks and rays

Overall chondrichthyan extinction risk is substantially higher for sharks, rays, and chimaeras than for most other vertebrates, and only one-third of species are considered safe.