Articles | Volume 77, issue 4
https://doi.org/10.5194/gh-77-443-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gh-77-443-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
People's knowledge and perceptions of Trachycarpus fortunei (Chinese windmill palm) invasions and their management in Ticino, Switzerland
Micol Genazzi
CORRESPONDING AUTHOR
Institute of Earth Surface Dynamics (IDYST), University of Lausanne, Geopolis, CH-1015 Lausanne, Switzerland
Institute of Geography and Sustainability, University of Lausanne,
1015 Lausanne, Switzerland
Antoine Guisan
Institute of Earth Surface Dynamics (IDYST), University of Lausanne, Geopolis, CH-1015 Lausanne, Switzerland
Department of Ecology and Evolution (DEE), University of Lausanne,
Biophore, CH-1015 Lausanne, Switzerland
Ross T. Shackleton
Institute of Geography and Sustainability, University of Lausanne,
1015 Lausanne, Switzerland
Centre for Invasion Biology, Department of Botany and Zoology,
Stellenbosch University, Stellenbosch, South Africa
Swiss Federal Institute for Forest, Snow and Landscape Research, WSL, Zürcherstrasse 111, CH-8903 Birmensdorf, Switzerland
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Pauline Rivoire, Sonia Dupuis, Antoine Guisan, Pascal Vittoz, and Daniela I. V. Domeisen
EGUsphere, https://doi.org/10.5194/egusphere-2024-3482, https://doi.org/10.5194/egusphere-2024-3482, 2024
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Our study investigates the conditions in temperature, precipitation, humidity, and soil moisture leading to the browning of the European forests in summer. Using a Random Forest model and satellite measurement of vegetation greenness, we identify key conditions that predict forest damage. We conclude that hot and dry conditions in spring and summer are adverse conditions, in particular for broad-leaved trees. The hydro-meteorological conditions during the preceding year can also have an impact.
Olivier Broennimann and Antoine Guisan
Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2024-79, https://doi.org/10.5194/essd-2024-79, 2024
Revised manuscript not accepted
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CHclim25 is a high-resolution climatic dataset for Switzerland, offering daily, monthly, and yearly data on temperature, precipitation, sunshine duration, and other derived climatic variables for the baseline 1981–2010 period and future periods up to 2099. Downscaled to 25 m using local topography, it outperforms global datasets, especially at higher elevations. CHclim25 enhances both temporal and spatial resolution, opening avenues for ecological and environmental research in Switzerland.
Shiba Subedi, György Hetényi, and Ross Shackleton
Geosci. Commun., 3, 279–290, https://doi.org/10.5194/gc-3-279-2020, https://doi.org/10.5194/gc-3-279-2020, 2020
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We study the impact of an educational seismology program on earthquake awareness and preparedness in Nepal. We see that educational activities implemented in schools are effective at raising awareness levels and in improving adaptive capacities and preparedness for future earthquakes. Knowledge also reached the broader community though social learning, leading to broadscale awareness. The result observed in this study is encouraging for the continuation and expansion of the program.
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Die another day: explanations based on qualitative comparative analysis (QCA) for the survival and non-survival of isolated ski lifts in Switzerland
The State as a “form of life” and the space as Leistungsraum: the reception of Ratzel in the First and Second World Wars
What can we see from the road? Applications of a cumulative viewshed analysis on a US state highway network
Geological monitoring networks for risk management close to large rock cliffs: the case history of Gallivaggio and Cataeggio in the italian Alps
Testing of photogrammetry for differentiation of soil organic carbon and biochar in sandy substrates
Fuzzy difference and data primitives: a transparent approach for supporting different definitions of forest in the context of REDD+
The bedrock topography of Gries- and Findelengletscher
Forests: the cross-linguistic perspective
Drones for justice: inclusive technology and river-related action research along the Kapuas
Une représentation du risque à l'intersection de l'aléa et de la vulnérabilité: cartographies des inondations lyonnaises
Estimating greenhouse gas emissions from travel – a GIS-based study
Steve Schlegel and Christoph Schuck
Geogr. Helv., 79, 85–99, https://doi.org/10.5194/gh-79-85-2024, https://doi.org/10.5194/gh-79-85-2024, 2024
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Why do isolated Swiss ski lifts die? A comprehensive survey of all isolated lifts ever established in Switzerland is conducted. Using a set-theoretical method (qualitative comparative analysis), it is shown that closed isolated lifts tend to be outdated and have no technical snowmaking facilities. Moreover, it is evident that the simultaneous occurrence of the lack of lift facility replacement, lack of snowmaking and high ski area competition has caused the closure of most isolated lifts.
Patricia Chiantera-Stutte
Geogr. Helv., 78, 29–39, https://doi.org/10.5194/gh-78-29-2023, https://doi.org/10.5194/gh-78-29-2023, 2023
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The relevance of the outbreak of the First and Second World Wars to the posthumous reception of Ratzel's work cannot be overestimated; Kjellen in particular was one of the main protagonists of Ratzel's revival. Kjellen and Schmitt appropriated and transformed Ratzel's concepts for their research aims, in order to highlight a new turning point in the political and juridical sciences and in politics. As a consequence, their Ratzel was oriented toward militant aims.
Sterling D. Quinn
Geogr. Helv., 77, 165–178, https://doi.org/10.5194/gh-77-165-2022, https://doi.org/10.5194/gh-77-165-2022, 2022
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This study uses geographic information systems (GIS) to determine which landforms are most visible to motorists from the highways of the northwestern US. Using an elevation dataset, a computer determined the area visible from sample points taken at 1 km intervals along the highway network. Highly visible mountains, ridges, and valleys were identified and mapped. These methods can be used to identify scenic byways, inform infrastructure development, and improve maps and navigation apps.
Luca Dei Cas, Maria Luisa Pastore, Andrea Pavan, and Nicola Petrella
Geogr. Helv., 76, 85–101, https://doi.org/10.5194/gh-76-85-2021, https://doi.org/10.5194/gh-76-85-2021, 2021
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La riduzione del rischio, nelle aree poste in prossimità di pareti rocciose, mediante gestione dei sistemi di monitoraggio con finalità d'allerta evidenzia potenzialità, ma anche numerose criticità e limiti. L'articolo prende in esame due frane, originatesi da pareti rocciose, avvenute in prossimità di aree abitate nelle Alpi. Si analizzano costi ed efficacia sia delle opere di difesa sia dei sistemi di monitoraggio con funzione di early warning anche in relazione a soglie d'allerta e scenari.
Wolfgang Fister, Nina Goldman, Marius Mayer, Manuel Suter, and Nikolaus J. Kuhn
Geogr. Helv., 74, 81–91, https://doi.org/10.5194/gh-74-81-2019, https://doi.org/10.5194/gh-74-81-2019, 2019
Alexis Comber and Werner Kuhn
Geogr. Helv., 73, 151–163, https://doi.org/10.5194/gh-73-151-2018, https://doi.org/10.5194/gh-73-151-2018, 2018
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REDD+ requires forests to be measured. However, many communities have their own concepts of
forestwith different meanings. Global forest inventories frequently ignore these conceptualizations. This paper describes an approach for generating alternative measures of forest simultaneously to support the international objectives of activities such as REDD+ and to reflect local concepts and semantics associated with
forest.
Nadine Feiger, Matthias Huss, Silvan Leinss, Leo Sold, and Daniel Farinotti
Geogr. Helv., 73, 1–9, https://doi.org/10.5194/gh-73-1-2018, https://doi.org/10.5194/gh-73-1-2018, 2018
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This contribution presents two updated bedrock topographies and ice thickness distributions with a new uncertainty assessment for Gries- and Findelengletscher, Switzerland. The results are based on ground-penetrating radar (GPR) measurements and the
ice thickness estimation method (ITEM). The results show a total glacier volume of 0.28 ± 0.06 and 1.00 ± 0.34 km3 for Gries- and Findelengletscher, respectively, with corresponding average ice thicknesses of 56.8 ± 12.7 and 56.3 ± 19.6 m.
Niclas Burenhult, Clair Hill, Juliette Huber, Saskia van Putten, Konrad Rybka, and Lila San Roque
Geogr. Helv., 72, 455–464, https://doi.org/10.5194/gh-72-455-2017, https://doi.org/10.5194/gh-72-455-2017, 2017
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In this paper we explore semantic diversity observed in relation to forests. We do so on the basis of first-hand linguistic field data from a global sample of indigenous categorization systems as they are manifested in six diverse languages. We show that basic linguistic categories relating to tree cover vary considerably in their principles of semantic encoding across languages, and that
forestis a challenging category from the point of view of intercultural translatability.
Irendra Radjawali and Oliver Pye
Geogr. Helv., 72, 17–27, https://doi.org/10.5194/gh-72-17-2017, https://doi.org/10.5194/gh-72-17-2017, 2017
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This article discusses the potential of using drones for community based counter-mapping. Drawing on action research conducted along the Kapuas River in West Kalimantan, Indonesia, we describe how drones were used for political interventions against land grabs by palm oil and mining companies. We argue that self-built drones can be used by local activists in an emancipatory and inclusive way, thereby becoming a weapon of the weak against land and resource grabs.
F. Renard and D. Soto
Geogr. Helv., 70, 333–348, https://doi.org/10.5194/gh-70-333-2015, https://doi.org/10.5194/gh-70-333-2015, 2015
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Vulnerability analysis is essential to risk studies. Starting with the key concepts of risk, this work provides a procedure which allows precise knowledge of the local vulnerability, available to all types of hazards and applicable to all areas. Finally, in order to get an overall perspective of risk, assets vulnerabilities are crossed with the hazards areas, in accordance to the spatial distribution of both components and using innovative geomatics operations.
S. Kuonen
Geogr. Helv., 70, 185–192, https://doi.org/10.5194/gh-70-185-2015, https://doi.org/10.5194/gh-70-185-2015, 2015
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In this study, the GHG emissions from travel activities of attendees of the EGEA annual conference 2013 have been calculated in a GIS-based analysis. The travel activities of the participants result in total GHG emissions of 39,300 kg CO2-eq including both outward and return trip. On average a participant caused GHG emissions of 401 kg CO2-eq. The potential to reduce GHG emissions by substituting flights (-32.6%) and choosing a more central site (-26.3%) has also been assessed.
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Short summary
This paper assesses peoples' knowledge and perceptions of the invasive palm (Trachycarpus fortunei) in Ticino, Switzerland. Such information is important for guiding decision-making and management planning. In general, although the palm induces positive perceptions in most respondents, the majority of people realise the threat that invasions pose to the region. Therefore, most respondents supported the regulations and management for this popular ornamental plant.
This paper assesses peoples' knowledge and perceptions of the invasive palm (Trachycarpus...