No abstract

National parks in Canada operate under the dual mandate of conservation and visitor use, which involves balancing ecological integrity and nature-based tourism activities.Climate-induced environmental change may increase the existing tension between conservation and visitor use as major tourism resources located in protected areas are projected to undergo large-scale changes. This study draws upon the behavioural approach, scenario planning, and landscape visualizations to examine the relationship between climate change impacts, visitor perceptions, and visitor experience management at the Athabasca Glacier in Jasper National Park, Canada. Four tourism development scenarios defined by two management drivers (ecological integrity and visitor demand) with corresponding storylines and visualizations were developed for 2050. The visualized scenarios were presented to visitors (n=304) in a survey to understand potential implications on visitor satisfaction. The results suggest that park managers need to find a balance between ecological integrity and visitor use in a way that ensures commercialized tourism development is limited, educational material is prioritized, and ecological integrity is maintained. While understanding the behaviour of future tourists is complex, it is a critical component of climate change adaptation planning and decision-making processes that needs to be prioritized by policymakers and protected areas managers.

Many plants produce broadly active toxins to which specialist herbivores—typically insects—have evolved counter-adaptations, sometimes spawning co-evolutionary arms races. Many non-social bee species are likewise taxonomic host specialists, but the specialists’ pollen hosts frequently attract diverse floral generalists as well, even to flowers of plants that are otherwise chemically defended. In this study of foothills death-camas, Toxicoscordion paniculatum (Nutt.) Rydberg (formerly Zigadenus), we show that its pollen and nectar both contain zygacine, the steroidal alkaloid responsible for this plant’s notorious mammalian toxicity. Hungry naïve adults of a generalist solitary bee, Osmia lignaria Say (Megachilidae), would briefly drink death-camas nectar or biologically relevant doses of zygacine in syrup, followed by prolonged bouts of irritable tongue grooming; many became paralyzed and some even died. Larvae fed dosed provision masses likewise often ceased feeding and sometimes died. Prolonged irritation and subsequent deterrence of foraging O. lignaria likely illustrates why it and 50+ other vernal bee species were absent from death-camas flowers in a five-state survey. The sole visiting bee, Andrena astragali, foraged exclusively at death-camas flowers for pollen and nectar. Thus, a toxic alkaloid found in death-camas pollen and nectar deters generalist bees from flowers of this pollinator-dependent monocot, restricting visitation to a single specialist bee that tolerates death-camas toxins and is its likely pollinator.

There has been recent discussion on the abandonment of sovereignty in the Arctic and territorial and marine claims in Antarctica in the interests of redefining these regions into global commons with joint management. Global commons refers to a region, or group of valued resources, protected from exploitation in the interests of the global population and future generations. While it may be reasonable to examine the possibility of shifting sovereignty in these regions and locking access to any of the resources, an academic examination must not focus on sovereignty in isolation from existing management regimes. Sovereignty is not displaced easily, and nor are sovereign rights; however there is a large capacity for negotiation, consent and agreement towards how resources and areas may be used and enjoyed while maintaining an indifference to existing or exerted territorial and/or marine claims. Sovereignty and sovereign rights can also be preserved, but their utility minimized in the presence of alternative arrangements, as exemplified in the Antarctic Treaty. In the absence of such arrangements, the self‐interest of States is manifest. A false sense of probability is fostered by any examination that only considers sovereignty and disregards State practice or current management initiatives. This article demonstrates that the current governance arrangements are legitimate in a dynamic world, regardless of sovereignty, and identifies the lengths to which the stakeholders go to preserve both their national interest and that of the global community in de facto global commons areas. It concludes by offering a view that cutting the Gordian knot of polar sovereignty is both risky and premature in the absence of suitable alternatives.