Freshwater ecosystems in the Arctic are important sentinels for climate change, but not much is known about the potential for rapid adaptation of their asexually reproducing key zooplankton members. Applying a resurrection ecology approach to an asexual Arctic Daphnia population, the authors provide evidence for a change in thermal and hypoxia tolerance within a decade.

In study areas near acoustically reflective surfaces, reflected transmissions may cause large detection outliers that reduce the accuracy of telemetry positioning. A novel time-of-arrival model is presented. This allows for positioning of aquatic animal in acoustically challenging study areas. It provides good measures of positioning uncertainty and is useful for fine-scale telemetry.

The authors developed a new algorithm DREAM(LoAX) as an effective conditioning tool to consider epistemic uncertainty in process-based models. It provides real-time diagnostic information of model failures for identification of uncertainty in data or flaws in model structure, and hence is a learning tool for limitations in current monitoring networks and development of future models.