The Falkland Shelf is a highly productive ecosystem in the Southwest Atlantic Ocean. It is characterized by upwelling oceanographic dynamics and displays a wasp-waist structure, with few intermediate trophic-level species and many top predators that migrate on the shelf for feeding. One of these resident intermediate trophic-level species, the Patagonian longfin-squid Doryteuthis gahi, is abundant and plays an important role in the ecosystem. We used two methods to estimate the trophic structure of the Falkland Shelf food web, focusing on the trophic niche of D. gahi and its impacts on other species and functional groups to highlight the importance of D. gahi in the ecosystem. First, stable isotope measurements served to calculate trophic levels based on an established nitrogen baseline. Second, an Ecopath model was built to corroborate trophic levels derived from stable isotopes and inform about trophic interactions of D. gahi with other functional groups. The results of both methods placed D. gahi in the centre of the ecosystem with a trophic level of ~ 3. The Ecopath model predicted high impacts and therefore a high keystoneness for both seasonal cohorts of D. gahi. Our results show that the Falkland Shelf is not only controlled by species feeding at the top and the bottom of the trophic chain. The importance of species feeding at the third trophic level (e.g. D. gahi and Patagonotothen ramsayi) and observed architecture of energy flows confirm the ecosystem's wasp-waist structure with middle-out control mechanisms at play.

In 2021, the decision to close the last Norwegian coal mine on Svalbard was made, and with that, the Norwegian coal adventure on the archipelago came to an end. This was a result of a political process, which is the focus of this article. Drawing on fieldwork conducted during the fall of 2022, I argue that the political process of phasing out coal changed from a conflict over interests to a contest over symbolic capital. The article contributes to the understanding of Norwegian Svalbard politics and the “balancing act” that this represents. I focus on how power, in the form of shaping people’s perceptions and as prestige, influenced what interests prevail and why. The article addresses (1) why the decision to phase out coal was not made earlier, (2) what ultimately made this decision possible and (3) why and over what the key actors were still competing after the decision to phase out coal was made.

In 2022, highly pathogenic avian influenza (HPAI) A(H5N1) virus clade 2.3.4.4b became enzootic and caused mass mortality in Sandwich Tern Thalasseus sandvicensis and other seabird species across north-western Europe. We present data on the characteristics of the spread of the virus between and within breeding colonies and the number of dead adult Sandwich Terns recorded at breeding sites throughout north-western Europe. Within two months of the first reported mortalities, 20,531 adult Sandwich Terns were found dead, which is >17% of the total north-western European breeding population. This is probably an under-representation of total mortality, as many carcasses are likely to have gone unnoticed and unreported. Within affected colonies, almost all chicks died. After the peak of the outbreak, in a colony established by late breeders, 25.7% of tested adults showed immunity to HPAI subtype H5. Removal of carcasses was associated with lower levels of mortality at affected colonies. More research on the sources and modes of transmission, incubation times, effective containment, and immunity is urgently needed to combat this major threat for colonial seabirds.

Antioquia Brushfinch Atlapetes blancae is a recently rediscovered Colombian microendemic species with a restricted distribution. Although the species might use a variety of habitats, current information suggests that it is a shrubland specialist. It is categorised as “Critically Endangered” because due to habitat loss its population has been estimated to be smaller than 50 individuals. Such estimates are based on indirect measurements of its population and assumptions regarding its restricted range/habitat. We provide the first direct population estimates and adult sex ratio for seven localities, using mark-resighting techniques. Individuals were captured using mist-nets, bled, and colour banded. Subsequently, we performed censuses along transects to record banded and non-banded individuals. Population estimates were obtained using the classic closed population mark-resighting model. In addition, we used the abundance–area relationship to estimate population size at other sites where the species has been previously recorded. Finally, individuals were sexed by amplifying the Z and W-linked Chromo-Helicase DNA-binding gene (CHD) genes. In total, we banded 55 individuals at four locations. Summarising across the seven sampled localities, we found that the population is most likely composed of 109 individuals in the 122 ha sampled. Based on the abundance–area relationship, we estimated that the population of Antioquia Brushfinch could be as large as 405 individuals in 322 ha of suitable habitat. We found that male/female sex ratio was 0.45 (95% confidence interval [CI] 0.32–0.6) and that it was not significantly biased. Our results suggest that the population of Antioquia Brushfinch is at least eight times larger than suggested by secondary information. We found that populations are properly structured at least regarding sex ratio, although we caution for further research on sex biases of immature and juvenile individuals. We recommend that future studies should focus on population trends and the impact of habitat transformation on the demography of this iconic species.

We report how artificial nests can be utilised at scale in nest site-limited areas of Mongolia to create a managed population of Saker Falcons (Falco cherrug), an “Endangered” species that is harvested for international trade. The provision of 5,000 artificial nests created an average annual saker population of 602 (SE ± 59) breeding pairs, producing an estimated 1,735 (SE ± 272) fledglings per annum over the period 2013–2015. Our regular monitoring enabled us to identify the effects of climate and vegetation on breeding performance. A warm and dry climate prior to breeding was associated with earlier egg-laying dates, while warmer conditions during the breeding season increased fledging success. Greater vegetation biomass in the previous growth season was positively related to breeding density and earlier clutch initiation, which was associated with larger clutch size and larger fledged brood size. Furthermore, using small mammal remains from saker pellets collected at artificial nest sites, we found that higher breeding density, earlier egg laying, larger clutch size, and increased nest survival were associated with areas with a higher proportion of small mammal prey in the diet. Our results provided evidence of the role of temporal and spatial variation in climate and prey availability on breeding performance, demonstrating the requirement for dynamic modelling of variable demographic parameters to be incorporated within an adaptive management framework for the sustainable management of the Saker Falcon.

Reed warblers are widespread throughout Eurasia, Africa, and Australasia, and many species undertake long seasonal migrations. By contrast, other species of the genus Acrocephalus are sedentary and endemic to single oceanic islands. The Pitcairn Reed Warbler Acrocephalus vaughani is confined to the small volcanic island of Pitcairn in the South Pacific Ocean, and no population assessments have ever been conducted for this species. Due to its restricted range, the presence of invasive species, and the loss of natural habitat, the species is considered as globally “Endangered”, but its actual conservation status is entirely speculative. We conducted transect surveys and nest monitoring in the austral summer of 2022/23 and present abundance estimates for the species. We counted between 51 and 158 reed warblers along 54 transects that were each 100 m long and covered all habitats and roughly 13% of the vegetated island area. Using binomial mixture models accounting for imperfect detection and habitat variation in abundance, we estimated that Pitcairn may hold 1,568 (95% confidence interval 812–3,237) Pitcairn Reed Warblers, and that the species appeared to be most abundant in introduced Rose Apple Syzygium jambos stands. Based on the monitoring of 49 nests, of which only four failed to fledge any young, we estimated that Mayfield nest survival rate was 0.69 and estimated productivity was 1.07 (± 0.39 standard deviation) fledglings per nest. Assuming that Pitcairn Reed Warblers have similar annual survival probabilities as other island reed warblers, the productivity appears sufficient to maintain the population and there is no indication that the species has decreased significantly over the past three generations. Given the limited extent of occurrence, and the stable current population size between 442 and 2,774 mature individuals, we recommend that the global conservation status of the Pitcairn Reed Warbler be classified as “Vulnerable”.

Pringlea antiscorbutica (Brassicaceae) and Azorella polaris (syn. Stilbocarpa polaris, Apiaceae) are endemic sub-Antarctic flowering plants of significant ecological and historical importance. Pringlea antiscorbutica occurs on Îles Kerguelen and Crozet, Prince Edward, and the Heard and MacDonald Islands; A. polaris on Auckland, Campbell, and Macquarie Islands. We examine the use of these unrelated species of “wild cabbage,” as scurvy remedies and sustenance for eighteenth–nineteenth-century sailors. We trace their European discovery, taxonomic treatment, morphological representation, and cultural association through the historical record. Scurvy killed more sailors during the sixteenth-nineteenth centuries than armed conflict and shipwrecks combined. Both plants were essential to the survival of sailors and formed a nutritious, carbohydrate-rich staple of their diets, however, attitudes to these plants were strongly influenced by cultural background. Use of P. antiscorbutica as a scurvy remedy was promoted by Cook and Anderson, leading to a greater historical legacy than A. polaris, and a unique contemporary research focus on the plant’s nutritional value and cultivation potential. In contrast, contemporary studies of A. polaris have been directed primarily at the plant’s protection. Pringlea antiscorbutica and A. polaris are intrinsically linked to human associations with the sub-Antarctic islands, which further increases their cultural and conservation value.

Few details are known about the fate of the Franklin Expedition after it departed England in 1845. What we do know is derived from the archaeological record, Inuit testimony and brief communications written in 1847 and 1848 from the Expedition. During the 1860s, Charles Francis Hall went to the Arctic in search of survivors, papers, and relics. During Hall’s second expedition, two Inuit testimonies emerged which reported unusual site(s) on the Westcoast of King William Island which were reputedly built by the Expedition. Hall believed these sites were either a burial site or a cemented document vault(s). The first testimony, recorded by Hall himself, was obtained from a Pelly Bay Inuk, Sŭ-pung-er, in 1866. The second was collected from Pelly Bay Inuit by members of Hall’s support team, including Peter Bayne, in Hall’s absence in 1868. Eventually, the second testimony was sold to the Canadian Government in the form of a report written by George Jamme after Bayne’s death in 1928. Until now, only extracts of the Jamme Report have been available. This paper describes the background to the Jamme report and presents it in its entirety along with critiques so that scholars in the future may have this tool.

Open natural ecosystems (ONEs), such as tropical grasslands, are among the most threatened habitats on Earth today. The long-term monitoring of ONEs is an important research domain that is essential for understanding anthropogenic impacts and facilitating conservation action. Using a simple day-listing method over a 13-year period, we studied species trends in a central Indian grassland–agriculture mosaic experiencing several land-use changes. Our results indicate that some grassland species (such as the Great Indian Bustard Ardeotis nigriceps) showed steep declines during the study period, while other generalist species (such as the Indian Peafowl Pavo cristatus) showed an increasing trend. Daily listing also revealed distinct seasonal patterns, and we discuss the Great Indian Bustard and Western Marsh Harrier Circus aeruginosus as examples. Our study highlights the utility of consistent checklist surveys to monitor population trends of bird communities within a changing landscape.

Indigenous communities in Canada are disproportionately affected by issues related to water security, especially access to clean water to meet human needs. The issues these communities face are diverse and widespread across Canada, with many causes and consequences. This review summarizes the types and magnitudes of risks associated with the water security of these communities, the consequences considering health and social perspectives, and the means of responding to these issues. Risks are broadly divided into quantitative risks (e.g., water quality and availability) and qualitative risks (e.g., lack of funding and jurisdictional conflicts). These risks lead to unique consequences, resulting in challenges in developing generalized risk response frameworks. Management of these risks includes a mix of techniques relying on legislative and technical approaches. Nevertheless, the affected communities should be included in the decision-making process that should be holistic, incorporating indigenous knowledge. Good governance, cooperation between communities, policy improvement and the development of an institutional mechanism for clean water supply will provide a pathway and guidelines to address the water security challenges among indigenous communities.

Strategies are proposed to cope with uncertainties in a way that all possible kinds of uncertainty are named, recognized, statistically quantified as far as possible and utilized in efficient decision-making in flood risk management (FRM). We elaborated on the metaphor of uncertainty as a monster. We recommend two strategies to cope with the uncertainty monster to support efficient decision-making in FRM: monster adaptation and monster assimilation. We present three cases to illustrate these strategies. We argue that these strategies benefit from improving the structure and reducing the complexity of decision problems. We discuss ways to involve decision-makers in FRM, and how communication strategies can be responsive to their informational needs.

The mysterious disappearance of HMS Erebus and HMS Terror while searching for the Northwest Passage under the leadership of Sir John Franklin in the 1840s led to more than thirty different expeditions seeking to find the lost ships and their 129-man crews. It also fostered the first and only use of wild animals as a means of communication in such a rescue operation. Since covering the vast search areas was challenging, if not impossible during sub-freezing winter conditions, some of the would-be rescuers turned to Arctic foxes as couriers of information that they hoped might direct the lost explorers to safety. Based on excerpts from the participants’ diaries and published reports from the period, and on the physical evidence that survives, this paper describes the role Arctic foxes were asked to play in one of the greatest (unsuccessful) rescue efforts ever undertaken in the Far North.

During their northward migration, Red Knots Calidris canutus rufa stop at the Lagoa do Peixe National Park in the extreme south of Brazil to build up fat reserves for their journey to their Canadian breeding grounds. We tracked five Red Knots with PinPoint Argos-75 GPS transmitters to investigate differences in migration strategies from this stopover. Tracked birds used two different routes: the Central Brazil route and the Brazilian Atlantic Coast route. One bird flew 8,300 km straight from Lagoa do Peixe to the Delaware Bay (USA). Another bird stopped in Maranhão (north-east Brazil) and a third one used a yet unknown environment for the species, the mouth of the Amazon River at Baía Santa Rosa, Brazil. These two birds made short flights, covering stretches of 1,600 km to 3,600 km between stop-overs, where they stayed from 4 to 18 days. Our study highlights the occurrence of intrapopulation variation in migratory strategies and reveals the connectivity of environments that are essential for the viability of rufa Red Knot populations.

This article makes the case for applying recent developments in the history of emotions, and in particular the concept of “emotional arena”, to the study of past polar expeditions. It focuses on the first Antarctic expedition of Jean-Baptiste Charcot (1903–1905), showing how, despite a lack of ideal sources, attention to the role of emotions in his expedition, and in the way it was communicated to the public provides a new understanding of the culture of exploration of the time. The article pays particular attention to two groups of emotions: first, those related to fear, an emotion that Charcot initially was reluctant to say that he had experienced (his position changed under the influence of journalists who saw the emotion as an interesting selling point); and second, anger and hate, emotions that were deemed inappropriate and were omitted from hidden in published accounts of the expedition, even though they appear in other sources.

In this paper, we expand on existing studies of Canadian Inuit art in the international arena by examining ways in which this new art served domestic purposes, focusing primarily on the 1950s and 1960s. The Canadian government developed and promoted Inuit art as part of its project to transform Inuit from semi-independent hunters into modern Canadian citizens. In this effort, Canada took up and assimilated Inuit art as a genuine Canadian cultural product, presenting it as diplomatic gifts and for other forms of international cultural diplomacy. Previous studies of Canadian Inuit art from that era have noted the ways that the promotion of Canadian Inuit art supported the young nation’s claims to a deep history, while simultaneously marking the country’s distinction from both the United States and the United Kingdom. In the context of the Cold War, the promotion of Canadian Inuit art also asserted Canada as an Arctic power. Labelled as “primitive modernist” fine art, Inuit sculpture and prints provided a stark contrast to the contemporaneous socialist realist art of the Soviet Union and its allies. We argue that the success of the Inuit art program sustained a belief among government officials that their programme to remake Inuit lives and livelihoods would succeed. Inuit art likely deflected attention from the many things that were going wrong with that northern modernisation project.