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Standardized Catch Rates of Mako Sharks from the U.s Pelagic Longline Logbook and Observer Programs Using a Generalized Linear Mixed Model
| Content Provider | Semantic Scholar |
|---|---|
| Author | Cortés, E. Torrella |
| Copyright Year | 2013 |
| Abstract | Updated indices of abundance were developed for mako sharks (Isurus spp.) from two commercial sources, the U.S. pelagic longline logbook program (1986-2010) and the U.S. pelagic longline observer program (1992-2010). Indices were calculated using a two-step delta-lognormal approach that treats the proportion of positive sets and the CPUE of positive catches separately. Standardized indices with 95% confidence intervals are reported. The logbook and observer time series showed a concave shape, marked by an initial decline until the late 1990s, followed by an upward trend to 2010. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://www.iccat.int/Documents/CVSP/CV069_2013/n_4/CV069041578.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |