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Marine megafauna species are affected by a wide range of anthropogenic threats. To evaluate the risk of such threats, species’ vulnerability to each threat must first be determined. We build on the existing threats classification scheme and ranking system of the International Union for Conservation of Nature (IUCN) Red List of Threatened Species by assessing the vulnerability of 256 marine megafauna species to 23 at‐sea threat...
The thermal expansion of Ti-substituted CaAl12O19NARA Subscribed
CaAl 12 O 19 , which can incorporate Ti as both Ti 3+ and Ti 4+ (charge coupled substitution with Mg 2+ ), is one of the first minerals to condense from a gas of solar composition and is used as a ceramic. It is variously known as hibonite, calcium hexaluminate (CaO.6Al 2 O 3 ), and CA 6 . The lattice parameters and unit cell volumes of Ti-substituted hibonite ( P 6 3 / mmc ) with the formulae CaAl 11.8 Ti 3+ 0.2 O 19 and CaAl...
A surplus no more? Variation in krill availability impacts reproductive rates of Antarctic baleen whalesNARA Subscribed
The krill surplus hypothesis of unlimited prey resources available for Antarctic predators due to commercial whaling in the 20th century has remained largely untested since the 1970s. Rapid warming of the Western Antarctic Peninsula (WAP) over the past 50 years has resulted in decreased seasonal ice cover and a reduction of krill. The latter is being exacerbated by a commercial krill fishery in the region. Despite this, humpba...
A novel method for identifying coded tags recorded on aquatic acoustic monitoring systemsNARA Subscribed
Aquatic biotelemetry increasingly relies on using acoustic transmitters (‘tags’) that enable passive detection of tagged animals using fixed or mobile receivers. Both tracking methods are resource-limited, restricting the spatial area in which movements of highly mobile animals can be measured using proprietary detection systems. Transmissions from tags are recorded by underwater noise monitoring systems designed for other pur...
Diets of European polecat Mustela putorius in Great Britain during fifty years of population recoveryNARA Subscribed
Following nineteenth-century declines, polecats Mustela putorius are recolonising Great Britain. Polecat diet relates to two potential risks to recovery. First, rabbits Oryctolagus cuniculus , which are important prey for polecats, have experienced extreme population fluctuations, with near extirpation due to myxomatosis in the 1950s, recovery in 1960s–1990s and declines in 1990s–2010s. Second, polecats are secondarily exposed...
Loss of Tannins and Other Phenolics from Willow Leaf LitterNARA Subscribed
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