Global climate change could alter the range, abundance, and interactions of species, potentially favouring invasive species and harming endemics. Ship rats ( Rattus rattus ) are one of the world's worst invasive predators but are typically absent from Aotearoa New Zealand's native Fuscospora cliffortioides (mountain beech) forest above 1000 m. Stoats ( Mustela erminea ) are another damaging invasive predator in Aotearoa New Ze...

We offer three reasons why economics matters more to species protection than many people think and what this implies for the ongoing debate over the reauthorization of the Endangered Species Act of 1973. Economics matters because (1) human behavior generally, and economic parameters in particular, help determine the degree of risk to a species; (2) in a world of scarce resources, the opportunity cost of species protection—the...

A bstract X‐rays of mandibles from ringed seal fetuses ( n = 15), newborns ( n = 12), and young‐of‐the‐year ( n = 11), collected up to early June, were examined for the presence, location, and eruption patterns of deciduous and permanent teeth. The presence of a neonatal line and cementum in permanent canines was determined microscopically. Fetuses sampled in October‐November had only unerupted, deciduous tooth germs, but by l...