Realm: Marine
Climate: Temperate
Biome: Temperate shelf and seas ecoregions
Central latitude: -31.320566
Central longitude: -71.422368
Duration: 2 years, from 2012 to 2013

293 records

15 distinct species

Across the time series Scartichthys viridis is the most frequently occurring species

Methods

Underwater visual censuses (UVC) and photography were used to quantify local density and biomass of larger benthic. demersal. and pelagic fish species. Cryptic species were not quantified. A first diver registered the identity and size (total length; TL) of each fish encountered within a 4 m-wide tunnel along each transect. Visual estimates of size were more than 90% accurate. as determined by comparisons of in situ estimates with direct measurements of captured individuals. Body mass for individual fishes (weight; W) was calculated using species-specific length:mass conversions (W = aLb. where L is the body length of each individual from visual estimates. and the parameters a and b are constants for each species (P?rez-Matus et al. 2014)). visual sensus trough the transect to 2 m on either side of transect Unit of abundance = CountPerSqM, Unit of biomass = Weight

Citation(s)

Ling, S. D., Scheibling, R. E., Rassweiler, A., Johnson, C. R., Shears, N., Connell, S. D., Salomon, A. K., Norderhaug, K. M., Pérez-Matus, A., Hernández, J. C., Clemente, S., Blamey, L. K., Hereu, B., Ballesteros, E., Sala, E., Garrabou, J., Cebrian, E., Zabala, M., Fujita, D. & Johnson, L. E. (2014) Global regime shift dynamics of catastrophic sea urchin overgrazing. Philosophical Transactions of the Royal Society B: Biological Sciences, 370, 20130269.
Pérez-Matus, A. & Ruz, C. S. “Conicyt-Fondecyt Fish and Turf Algae Data”, Chile, Subtidal Ecology Laboratory, Estacion Costera de Investigaciones Marinas, Facultad de Ciencias Biológicas. Pontificia Universidad Catolica de Chile, accessed 2016.