Polar ecosystems are threatened by non-native plants, and this risk will increase with climate warming. Non-native plant growth depends on Antarctic environmental conditions and substrates, but these influences are poorly quantified. Under laboratory conditions we quantified the growth of Holcus lanatus, Trifolium repens and Taraxacum officinale across nine sub-Antarctic and Maritime Antarctic substrates with varying characteristics. This included, among others, variation in carbon (0.2–27.0%), nitrogen (0.03–2.1%) and phosphorus (0.04–0.54%) contents, under simulated Antarctic conditions (2°C) and a warming scenario. Legacy effects from an established non-native chironomid midge (Eretmoptera murphyi) and non-native grasses were included. H. lanatus and T. repens grew best in organic- and nutrient-rich substrates, while T. officinale growth was poorly correlated with substrate characteristics. Warming increased plant size by one to three times, but inconsistently across species and substrates, suggesting that climate change impacts on plant growth will vary across the Maritime Antarctic. A variable response was also observed in the legacy effects of E. murphyi, while non-native grasses increased H. lanatus and T. repens plant size, but not that of T. officinale. Plant growth was positively correlated with substrate organic and phosphorus content, and this information was used to trial a novel approach to identifying sites ‘at risk’ from plant invasions in the Maritime Antarctic.

Maps are important in many areas of linguistics, especially dialectology, sociolinguistics, typology, and historical linguistics, including for visualizing regional patterns in the distribution of linguistic features and varieties of language. In this hands-on tutorial, we introduce map making for linguistics using R and the popular package ggplot2. We walk the reader through the process of making maps using both typological data, based on the World Atlas of Language Structures, and dialect data, based on large corpora of language data collected from German and American social media platforms. This tutorial is intended to be of use to anyone interested in making maps of linguistic data, and more widely to anyone wanting to learn about mapping in R.

Mapping of human rights abuses and international crimes is an increasingly common tool to evidence, preserve and visualise information. This paper asks, what does rights-informed mapping in the context of mass graves look like? What are the rights concerned and allied goals, and how might these practicably apply during a pilot study? The study offers an analysis of the goals and benefits espoused to accrue to mapping and documentation efforts, as well as an explication of rights arising when engaging with mass graves. Our findings underscore the imperative of understanding the full ramifications of the applicable context, in our case the life-cycle of mass graves. This will bring to the fore the rights engaged with the subject as well as the challenges with data points, collation and reporting as experienced in a pilot (Ukraine) where realities on the ground are not static but remain in flux.

Hybridization of parasitic species is an emerging health problem in the evolutionary profile of infectious disease, particularly within trematodes of the genus Schistosoma. Because the consequences of this hybridization are still relatively unknown, further studies are needed to clarify the epidemiology of the disease and the biology of hybrid schistosomes. In this article, we provide a detailed review of published results on schistosome hybrids of the haematobium group. Using a mapping approach, this review describes studies that have investigated hybridization in human (S. haematobium, S. guineensis, and S. intercalatum) and animal (S. bovis and S. curassoni) schistosome species in West Africa (Niger, Mali, Senegal, Côte d’Ivoire, Benin, Nigeria) and in Central Africa (Cameroon, Gabon, Democratic Republic of Congo), as well as their limitations linked to the underestimation of their distribution in Africa. This review provides information on studies that have highlighted hybrid species of the haematobium group and the regions where they have been found, notably in West and Central Africa.

Knowledge of the spatial distribution of reptiles is essential for decision-making in conservation under future climate change scenarios. We present a new compilation of reptile records for Odesa Oblast (i.e. province), south-west Ukraine. We compiled 662 records: 200 from our own research during 2012–2022, 362 from the published literature, 73 from public databases and 27 from museum collections. Fourteen native species of reptile (one species of Emydidae, four of Lacertidae, one of Anguidae, six of Colubridae and two of Viperidae) have been recorded in Odesa Oblast but the distribution of several are poorly known and/or records have rarely been published. We also report four introduced reptile species (one each of Emydidae, Gekkonidae, Lacertidae and Anguidae). We present the data in a grid of 462 10 × 10 km cells covering the oblast. In this compilation we did not record any new species, but our records include previously unreported localities for some species. Species richness was highest in the areas along the Black Sea, in protected areas. The main threats to the reptiles in Odesa Oblast are the alteration and degradation of habitats, military action, uncontrolled pressure from infrastructure projects and the presence of invasive species.

At the turn of the twentieth century, most of the world’s pearls were extracted from rich oyster and coral reefs on the northern Indian Ocean rim. This paper returns to the sites of extraction, studying imperial maps made from 1889–1925 to delineate oyster reefs on the seafloor. Building from the submarine up, I draw on environmental, animal, and history of science studies to explore the work of mapping oceanic, animate space. Attending to the role of divers, whose labor was required to make the seafloor visible, and the lifecycles of oysters, which changed over time, I argue that the seafloor represents a kind of unruly terrain, out of both the reach and control of imperial authorities. The paper’s final section meditates on reading humans as part of Indian Ocean landscapes and the possibilities this offers for further comparative, transnational work in a materialist vein.

In this commentary, I investigate the Poles differently, and in situ, rather than only as stereotypically barren uninhabited expansive places on a globe or maps. The human stories are behind the relatively white space on which few place names are marked. But the more visible ones are made and told through a male-dominated, colonial narrator and mapmaker, until more recently. Cartography, like history, has overwhelmingly documented men’s worlds, stories, dominations and accomplishments, creating a virtual whiteout of women’s and notably Indigenous women’s stories also in polar regions. In this commentary, I report on a journey into (re)mapmaking I did of women’s stories told through female place names and toponymies of women especially in the Antarctic, through a crowd-sourced project, Mapping Antarctic Women. I explore not only mapping female place names and women’s stories in the Arctic, exploring gendered, colonial and western culture mapping but also newer digital Indigenous place name mapping and also mapping of human-exacerbated changes in the ice that makes the Antarctic map.

Tropical spiderwort (Commelina benghalensis L.) is a noxious invasive species and was detected in a long-term experiment in a research farm in Goldsboro, NC. A multistakeholder governance model was used to address the invasion of this species. Regulators insisted on the use of fumigation in all fields, but after intense negotiations, a multi-tier eradication plan was designed and implemented, allowing fumigation outside the long-term experiment and a combination of integrated approaches (including physical removal) and intense monitoring and mapping for long-term experimental fields. In the long-term experiment, C. benghalensis populations decreased logarithmically from more than 50,000 plants in approximately 80 ha in 2005 to 19 plants in less than 1 ha in 2019, with a projection of full eradication by 2024. Despite these results, which were considered to be proof of successful ecological management by university researchers, regulators decided to fumigate the fields containing the remaining 19 plants. This decision was made because regulators considered factors such as professional liability and control efficacy. This created serious disagreements between the different stakeholders who participated in the design of the original plan. Despite the goodwill all parties exhibited at the beginning of the governance process, there were important shortcomings that likely contributed to the disagreements at the end. For example, the plan did not include specific milestones, and there was no clarity about what acceptable progress was based on (i.e., plant numbers or the rate of population decline). Also, no financial limits were established, which made administrators concerned about the financial burden the eradication program had become over time. Multistakeholder governance can effectively address plant invasions, but proper definition of progress and the point at which the program must be modified are critical for success, and all this must be done within a governance model that balances power in the decision-making process.

Data on the sex industry is notably hard to obtain. Existing evidence points towards an increase in the number of people selling sex, particularly through the online industry. The growing and increasingly diverse population poses challenges to service provision, as new groups are less visible and less likely to be in contact with specialist services. Simultaneously, there are increased calls for policies regulating the sex industry to be grounded in evidence. Relying on systematic literature and data reviews, this article provides a synthesis of the evidence on the prevalence of sex work and prostitution in England and Wales. It shows that no existing source allows producing reliable estimates of the size and characteristics of sex markets. As a result, policy is informed by partial pictures. The article proposes local mapping, an underused approach, to inform both policy development and service provision.

Travel demand models (TDMs) with freight forecasts estimate performance metrics for competing infrastructure investments and potential policy changes. Unfortunately, freight TDMs fail to represent non-truck modes with levels of detail adequate for multi-modal infrastructure and policy evaluation. Recent expansions in the availability of maritime movement data, i.e. Automatic Identification System (AIS), make it possible to expand and improve representation of maritime modes within freight TDMs. AIS may be used to track vessel locations as timestamped latitude–longitude points. For estimation, calibration and validation of freight TDMs, this work identifies vessel trips by applying network mapping (map-matching) heuristics to AIS data. The automated methods are evaluated on a 747-mile inland waterway network, with AIS data representing 88% of vessel activity. Inspection of 3820 AIS trajectories was used to train the heuristic parameters including stop time, duration and location. Validation shows 84⋅0% accuracy in detecting stops at ports and 83⋅5% accuracy in identifying trips crossing locks. The resulting map-matched vessel trips may be applied to generate origin–destination matrices, calculate time impedances, etc. The proposed methods are transferable to waterways or maritime port systems, as AIS continues to grow.

We describe a spatial reference system that uniquely identifies 4884 coastal island and continental rock features across East Antarctica. The system comprises a series of maps and a related database, and can be a foundation tool for a wide range of environmental studies.