Results 61 to 70 of about 413 (143)

Environmental factors modulate the distribution of elasmobranchs in southern Mozambique

Frontiers in Marine Science
Investigating the spatiotemporal ecology of elasmobranchs is an important precursor to their effective management. Understanding long-term patterns in the movement and habitat use of threatened species can improve management plans so that they yield ...
Calum J. G. Murie, Calum J. G. Murie, Simon P. Oliver, Simon P. Oliver, Livia Gavard, Mario Lebrato, James Brown, Andrew Lawrence   +7 more
doaj   +1 more source

Vulnerability of Eastern Tropical Pacific chondrichthyan fish to climate change

Global Change Biology, Volume 30, Issue 7, July 2024.
This assessment identifies sharks' vulnerability to climate change in a data‐poor tropical region and suggests management actions. Abstract Climate change is an environmental emergency threatening species and ecosystems globally. Oceans have absorbed about 90% of anthropogenic heat and 20%–30% of the carbon emissions, resulting in ocean warming ...
Florencia Cerutti‐Pereyra, Elizabeth J. Drenkard, Mario Espinoza, Brittany Finucci, Felipe Galván‐Magaña, Ana Hacohen‐Domené, Alexander Hearn, Mauricio E. Hoyos‐Padilla, James T. Ketchum, Paola A. Mejía‐Falla, Ana V. Moya‐Serrano, Andres F. Navia, Diana A. Pazmiño, Deni Ramírez‐Macías, Jodie L. Rummer, Pelayo Salinas‐de‐León, Oscar Sosa‐Nishizaki, Charles Stock, Andrew Chin   +18 more
wiley   +1 more source

Partial dependency plots for boosted regression tree analysis of total large-bodied reef fish biomass (all species pooled) and presence/absence of key species.

, 2013
Species selection was based on maximum data density, and management and ecological importance. CAAB = Carcharhinus amblyrhynchos, LUBO = Lutjanus bohar, MASP = Macolor spp., TROB = Triaenodon obesus, NAHE = Naso hexacanthus, SCRU = Scarus rubroviolaceus,
Ivor D. Williams (331075), Benjamin L. Richards (331074), Gareth J. Williams (219143), Oliver J. Vetter (331076)   +3 more
core   +1 more source

Characteristics of the shark fisheries of Fiji [PDF]

, 2015
Limited information is available on artisanal and subsistence shark fisheries across the Pacific. The aim of this study was to investigate Fiji’s inshore fisheries which catch sharks.
Adrian-Kalchhauser, I., Brunnschweiler, J. M., Burkhardt-Holm, P., White, W. T., Glaus, K. B. J.   +4 more
core   +1 more source

Effect of zoning on shark abundance, Great Barrier Reef of Australia.

, 2014
The predicted abundance for (a, b) all shark species pooled, Carcharhinus amblyrhynchos (c, d, e), C. albimarginatus (f, g, h), Galeocerdo cuvier (i, j, k), and Triaenodon obesus (l, m, n) was examined across the range of hard coral cover (%), days since
Michelle R. Heupel (230256), Mario Espinoza (627951), Mike Cappo (488961), Colin A. Simpfendorfer (230240), Andrew J. Tobin (627952)   +4 more
core   +1 more source

Summary results of Poisson (P) and negative binomial (NB) regression models used to examine the effect of zoning (areas closed/open to fishing) on the relative abundance of sharks (2004–2010).

, 2014
The performance of P and NB models were compared using Akaike's information criterion (AIC) against nested models and significant differences were evaluated with maximum likelihood ratio tests (χ2 ...
Michelle R. Heupel (230256), Mario Espinoza (627951), Mike Cappo (488961), Colin A. Simpfendorfer (230240), Andrew J. Tobin (627952)   +4 more
core   +1 more source

Multivariate regression tree analysis of the occurrence of shark species explained by 12 environmental/habitat predictors (Cross-Validated Error: 0.90±0.05 SE).

, 2014
The bold numbers at each node show the predictors that were most influential in predicting different shark assemblages. Histograms on the “leaves” show the frequency of occurrence of each species and the number of sites (n) with the node names and node ...
Michelle R. Heupel (230256), Mario Espinoza (627951), Mike Cappo (488961), Colin A. Simpfendorfer (230240), Andrew J. Tobin (627952)   +4 more
core   +1 more source

CONSIDERACIONES ZOOGEOGRAFIAS SOBRE LOS TIBURONES DEL PACIFICO COLOMBIANO

, 2016
The zoogeographical origin is determined and analized, and the distributional patterns in the eastern tropical Paciic are recognized for 22 shark species (Pleurotremata) recorded from the Colombian Pacific, including Triaenodon obesus, Ginglymostoma ...
Juan Manuel Díaz M.
core   +1 more source

Boosted regression tree (BRT) analysis: Optimal parameter settings, predictive performance, and relative influence of environmental variables on total large-bodied reef fish biomass and presence/absence of key species.

, 2013
Note: Total Biomass values were double-log+1 transformed to achieve pseudo-normality, species were analyzed based on presence/absence. Species selection was based on PRIMER BEST analysis, maximum data density, and management importance.
Ivor D. Williams (331075), Benjamin L. Richards (331074), Gareth J. Williams (219143), Oliver J. Vetter (331076)   +3 more
core   +1 more source

Stock assessment of whaler and hammerhead sharks (Carcharhinidae and Sphyrnidae) in Queensland [PDF]

, 2015
This stock assessment provides detailed results for the most common sharks encountered by Queensland commercial fishers. These sharks come from the whaler (Carcharhinidae) and hammerhead (Sphyrnidae) families and comprise sharpnose sharks (Rhizoprionodon
Leigh, George M., Animal Science
core   +4 more sources