| assessing the risk of ships striking large whales in marine spatial planning. | marine spatial planning provides a comprehensive framework for managing multiple uses of the marine environment and has the potential to minimize environmental impacts and reduce conflicts among users. spatially explicit assessments of the risks to key marine species from human activities are a requirement of marine spatial planning. we assessed the risk of ships striking humpback (megaptera novaeangliae), blue (balaenoptera musculus), and fin (balaenoptera physalus) whales in alternative shippi ... | 2013 | 23521668 |
| [assessment of population differentiation using dna fingerprinting and modified wright's fst-statistics]. | using our results and literature data on multilocus dna fingerprinting, we propose a method of obtaining unbiased estimates of the between--population genetic similarity index and a measure of population subdivision based on modified wright's fst-statistics. on the basis of multiple comparison t2 hotelling's test and holmes' procedure, the fst-statistics was applied to assess differentiation of four (pacific and atlantic) subpopulations of humpback whale megaptera novaeangliae, six populations o ... | 2003 | 12669419 |
| organochlorine pesticides and polychlorinated biphenyls in california sea lions. | concentrations of polychlorinated biphenyls (pcbs), ddts, chlordanes, hchs, hexachlorobenzene (hcb), dieldrin, heptachlor epoxide, tris(4-chlorophenyl)methane (tcpme), and tris(4-chlorophenyl)methanol (tcpmoh) were measured in the blubber of california sea lions (zalophus californianus) collected in 2000. ddts were the most predominant contaminants, followed by pcbs, chlordanes, tcpme, hchs, tcpmoh, dieldrin, and heptachlor epoxide. concentrations of pcbs and ddts varied from a few microg/g to s ... | 2004 | 15261406 |
| humpback whale diets respond to variance in ocean climate and ecosystem conditions in the california current. | large, migratory predators are often cited as sentinel species for ecosystem processes and climate-related changes, but their utility as indicators is dependent upon an understanding of their response to environmental variability. documentation of the links between climate variability, ecosystem change and predator dynamics is absent for most top predators. identifying species that may be useful indicators and elucidating these mechanistic links provides insight into current ecological dynamics ... | 2016 | 26599719 |
| bayesian inference and assessment for rare-event bycatch in marine fisheries: a drift gillnet fishery case study. | fisheries bycatch is a global threat to marine megafauna. environmental laws require bycatch assessment for protected species, but this is difficult when bycatch is rare. low bycatch rates, combined with low observer coverage, may lead to biased, imprecise estimates when using standard ratio estimators. bayesian model-based approaches incorporate uncertainty, produce less volatile estimates, and enable probabilistic evaluation of estimates relative to management thresholds. here, we demonstrate ... | 2015 | 26263664 |