In a world where habitats are degrading and the climate is warming and becoming unpredictable, biodiversity conservation efforts and funding remain grossly inadequate. As part of a multifaceted approach to halting extinctions, shifting from preserving small, remnant populations to a practice of genetically connecting populations that recreate larger and more diverse populations is expected to be beneficial. This harnesses key...

Oxygen Deficient Zones (ODZs) of the world’s oceans represent a relatively small fraction of the ocean by volume (<0.05% for suboxic and<5% for hypoxic) yet are receiving increased attention by experimentalists and modelers due to their importance in ocean nutrient cycling and predicted susceptibility to expansion and/or contraction forced by global warming. Conventional methods to study these biogeochemically important region...

Disease and parasitism cause major welfare, environmental and economic concerns for global aquaculture. In this review, we examine the status and potential of technologies that exploit genetic variation in host resistance to tackle this problem. We argue that there is an urgent need to improve understanding of the genetic mechanisms involved, leading to the development of tools that can be applied to boost host resistance and...

Marine oxygen‐deficient zones represent a natural source of nitrous oxide (N 2 O), a potent greenhouse gas and ozone‐depleting agent. To investigate controls on N 2 O production, the responses of ammonia oxidation (AO) to nitrite () and N 2 O with respect to oxygen (O 2 ), ammonium () and concentrations were evaluated using tracer incubations in the Eastern Tropical North Pacific. Within the oxycline, additions of and O 2 stim...