Detection of spatial variability in relative density of fishes: comparison of visual census, angling, and baited underwater video

By Trevor J. Willis, R. Millar, R. Babcock. 2000

406 citations recorded by the source corpus.

Subfields: Ecology, Global and Planetary Change, Nature and Landscape Conservation

View Paper: https://www.semanticscholar.org/paper/43450f6567244a2084d736719f6582a8b89734fb

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Ecology

In Global and Planetary Change

In Nature and Landscape Conservation

Citations in the corpus

Rapid recolonisation of snapper Pagrus auratus: Sparidae within an offshore island marine reserve after implementation of no-take status (2004, background): “Edge effects have been demonstrated at the Leigh Marine Reserve (Willis et al. 2000), where recreational fishers commonly anchor and fish on the reserve boundary.”
Continuing trophic cascade effects after 25 years of no-take marine reserve protection (2003, background): “Both reserves have considerably higher abundances of predators, predominantly the snapper Pagrus auratus (Willis et al. 2000, in press) and the spiny lobster Jasus edwardsii (Kelly et al. 2000) compared with unprotected areas where these species are heavily targeted by both recreational and…”
A comparison of visual‐ and stereo‐video based fish community assessment methods in tropical and temperate marine waters of Western Australia (2013, neutral): “…on the type of information required, what spe- cific indices must be measured, the level of precision required to detect change, the repeatability of the method, and the environmental conditions under which assessments will take place (Connell et al. 1998; Willis et al. 2000; Smale et al. 2011).”
Differences in recreationally targeted fishes between protected and fished areas of a coral reef marine park (2003, result): “Video cameras were placed on the seabed in haphazardly chosen locations, similar to other studies (Bortone et al., 1991; Cappo and Brown, 1996; Babcock et al., 1999; Willis et al., 2000 ).”
Burdens of evidence and the benefits of marine reserves: putting Descartes before des horse? (2003, background): “should this comment be interpreted as “anti-reserve”; our own research has demonstrated the potential of reserves for science and conservation (Babcock et al. 1999; Willis et al. 2000; Shears & Babcock 2002; Shears & Babcock 2003; Willis et al. 2003).”
Effects of protection from fishing on the lengths of targeted and non-targeted fish species at the Houtman Abrolhos Islands, Western Australia (2009, background): “MaxN is a conservative measure of relative abundance (Willis et al. 2000) as the measure only permits counts of individuals that are observed within the 243 Mar Ecol Prog Ser 384: 241–249, 2009 field of view at the same time.”
Bathymetric distribution of some benthic and benthopelagic species attracted to baited cameras and traps in the deep eastern Mediterranean (2003, positive): “Similar methods have proved successful in shallower habitats for estimating the abundance of predatory reef fishes (Ellis & DeMartini 1995, Willis & Babcock 2000, Willis et al. 2000).”
A comparison of two survey methods: differences between underwater visual census and baited remote underwater video (2010, positive): “However, like other authors (Willis et al. 2000), we feel it is safe to assume that a comparison between a 125 m2 UVC and a 30 min BRUV deployment is a comparison between 2 different sampling areas; i.e. the BRUV is sampling a larger area than the UVC to which it is compared.”
Validating the use of baited remote underwater video surveys for assessing the diversity, distribution and abundance of sharks in the Bahamas (2011, methodology): “…indices have been generated from BRUVS; these include time of first arrival (Priede & Merrett 1996), maximum number of animals viewed on the videotape at any one time (Willis et al. 2000, Malcolm et al. 2007) and standard CPUE measured in sharks h–1 (Meekan & Cappo 2004, Meekan et al. 2006).”
A baited underwater video technique to assess shallow water Mediterranean fish assemblages: methodological evaluation (2007, methodology): “For many authors the principal advantages of remote video methods are that images can be checked by several observers as many times as necessary, and that they provide useful records of abundance, richness, size and behaviour (e.g. Willis andBabcock, 2000;Willis et al., 2000; Cappo et al., 2003).”
Degree of Fragmentation Affects Fish Assemblage Structure in Andros Island (Bahamas) Estuaries (2004, background): “UVC may result in an underestimate of cryptic species (Brock 1982; Ackerman and Bellwood 2000; Willis 2001), highly mobile species (Thresher and Gunn 1986), and other large piscivores (Kulbicki 1998; Willis et al. 2000), but has been used extensively because it is non-destructive, rapid, and simple.”
Bait type affects fish assemblages and feeding guilds observed at baited remote underwater video stations (2013, background): “Previous studies have shown that Max N is correlated with fish abundance (Willis et al. 2000), and Willis & Babcock (2000) reported that t1st was an accurate time-based index of relative abundance for blue cod Parapercis colias.”
Edge effects in patchy seagrass landscapes: The role of predation in determining fish distribution (2011, background): “When tested against other measures, MaxN has been shown to accurately reflect fish and species densities (Willis et al., 2000) and eliminates problems associated with fish being counted multiple times by ensuring an individual fish cannot be counted more than once in a single frame (Cappo et al.,…”
Ultrasonic tracking reveals multiple behavioural modes of snapper (Pagrus auratus) in a temperate no-take marine reserve (2004, background): “This theory is at odds with the observed build-up of snapper abundance and spatial distribution in the Cape Rodney to Okakari Point (CROP) reserve ( Willis et al., 2000, 2003 ), and is more consistent with an alternative theory of polymorphic snapper behaviour, where a proportion of P. auratus are y”
A comparison of temperate reef fish assemblages recorded by three underwater stereo-video techniques (2005, background): “As the uses of destructive sampling techniques are, for the most part, prohibited in marine protected areas (MPAs) (Lipej et al. 2003; Willis et al. 2000; Willis and Anderson 2003), the application of observational techniques is widespread.”
Structure of cryptic reef fish assemblages: relationships with habitat characteristics and predator density (2003, positive): “Numerically dominant fish predators on New Zealand reefs (snapper Pagrus auratus: Sparidae; and blue cod Parapercis colias: Pinguipedidae) attain significantly higher densities within marine reserves than in fished areas (Willis & Babcock 2000, Willis et al. 2000, 2003, Davidson 2001).”