Application of baited remote underwater video surveys to quantify spatial distribution of elasmobranchs at an ecosystem scale

White, Jimmy; Simpfendorfer, Colin A.; Tobin, Andrew J.; Heupel, Michelle R.

doi:10.1016/j.jembe.2013.08.004

Cited by 59 publications

(48 citation statements)

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“…Additionally, data on migratory patterns, biology and population structure of stocks should be obtained to facilitate interpretation of CPUE data. Baited Remote Underwater Video system (BRUVs) (Robbins et al, 2006;Ruppert et al, 2013;White et al, 2013) and longline surveys (Simpfendorfer et al, 2002;Pikitch et al, 2005;Dale et al, 2011) are frequently used as standardized fisheries-independent techniques to examine the abundance and distribution of mobile elasmobranchs. Despite inherent limitations in each of the methods, data from studies combining the two techniques have shown that they compare well to each other and are highly complementary for monitoring needs (Brooks et al, 2011;Santana-Garçon et al, 2014a;McLean et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Ongoing decline of shark populations in the Eastern Red Sea

Spaet

Nanninga

Berumen

2016

Biological Conservation

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Section: Introductionmentioning

confidence: 99%

Ongoing decline of shark populations in the Eastern Red Sea

Spaet

Nanninga

Berumen

2016

Biological Conservation

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“…Yet a search on ISI Web of Science shows the existence of more peer-reviewed research on the parasite fauna of R. ancylostoma (e.g. Bullard & Dippenaar 2003) than the single ecological study relevant to its conservation, of which it was not even the main focus (White et al 2013a). The clown wedgefish Rhynchobatus cooki, assessed as Vulnerable in 2006 before its very recent description, is only known from a handful of specimens collected in Southeast Asia, and has not been recorded since 1996 (Last et al 2016c).…”

Section: Critically Endangered the Brazilian Guitarfishmentioning

confidence: 99%

Are guitarfishes the next sawfishes? Extinction risk and an urgent call for conservation action

Moore¹

2017

Endang. Species. Res.

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Focusing on the most critical conservation priorities to prevent extinctions risks missing declines of lower priority taxa that may become tomorrow's emergency. Sawfishes (5 species) underwent catastrophic but largely unnoticed global declines in the latter part of the 20th century, and are now the subject of intensive research and conservation efforts. Guitarfishes (at least 55 species) share many characteristics with sawfishes: they are shark-like batoids with an often large body, prefer sedimentary habitats in warm shallow coastal waters exposed to intensive fisheries, and have high value fins and good quality meat. Guitarfishes represent a unique element of evolution and biodiversity and are vital components of complex coastal socio-ecological systems. Existing global IUCN Red List of Threatened Species assessments for nearly 60% of guitarfish species are 10 or more years old, and over 70% of species are either in threatened categories or Data Deficient. Recently described taxa not yet assessed include those likely to be at risk of extinction. Severe declines and localised extinctions have already been reported for guitarfishes. In notable contrast to sawfishes, total extinction of several guitarfish species is plausible given small distributions occurring solely in developing or least developed countries where conservation is highly challenging. Furthermore, species identification of guitarfishes is often problematic and they may lack the appeal often needed to promote conservation. To ensure that they do not follow the same trajectory as sawfishes, there is an urgent need for comprehensive and coordinated action on guitarfishes, which in many cases could integrate with sawfish conservation efforts.

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“…Their decline is therefore of concern, not only in terms of abundance, but also in light of the largely unquantified impacts of their removal on the wider food web (Field et al 2009). The regional effects of species' declines can be properly explored only where adequate information regarding the abundance, diversity and distribution of chondrichthyans is available (Ferretti et al 2010;McCauley et al 2012;Ruppert et al 2013;White et al 2013). The prioritisation of these data is therefore critical to fisheries management and to evidence-based conservation planning (Garla et al 2006).…”

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confidence: 99%

“…Extractive data collection is, however, problematic in protected areas and where study species are rare (Willis et al 2000). Fishery-dependent data usually reflect a non-random focus of effort (White et al 2013;Santana-Garcon et al 2014a). Moreover, the cost and logistical ease of standardising data collection efforts is important where conservation resources are stretched to capacity (Langlois et al 2010).…”

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confidence: 99%

“…Meekan et al 2006;Brooks et al Introduction Baited remote underwater video system (BRUVs) survey of chondrichthyan diversity in False Bay, South Africa § 2011; Ruppert et al 2013;White et al 2013). BRUVs are particularly useful for accessing a wide range of depths and habitat types (White et al 2013), without extraction and without the aid of divers (Meekan and Cappo 2004), and to record rare species that may be wide-ranging or elusive (Brooks et al 2011;Goetze and Fullwood 2013;Juhel et al 2014;Santana-Garcon et al 2014a, 2014b.…”

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confidence: 99%

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