Ariel Bergamini

Ariel Bergamini
Swiss Federal Institute for Forest, Snow and Landscape Research WSL | WSL · Biodiversity and Conservation Biology Research Unit

PhD

About

223
Publications
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2,653
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Publications

Publications (223)
Article
Biodiversity is currently experiencing an accelerated decline in terms of species and populations, mainly because of habitat loss. The designation of protected areas has therefore become essential for biodiversity conservation. However, compelling evidence for the long-term effectiveness of protected areas in maintaining species diversity is still...
Book
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The European Red List is a review of the status of European species according to IUCN regional Red Listing guidelines. It identifies those species that are threatened with extinction at the regional level – in order that appropriate conservation action can be taken to improve their status. This publication is a summary of the conservation status of...
Article
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Abstract Habitat loss leading to smaller patch sizes and decreasing connectivity is a major threat to global biodiversity. While some species vanish immediately after a change in habitat conditions, others show delayed extinction, that is, an extinction debt. In case of an extinction debt, the current species richness is higher than expected under...
Article
Species monitoring plays an important role in determining whether conservation targets are being met. However, monitoring programs can be costly and logistically demanding. When site characteristics are strongly linked to species’ status, managers may instead choose to monitor the site characteristics themselves as a surrogate of species status. In...
Chapter
Land-use changes including agricultural intensification are major drivers of biodiversity loss. As other countries, Switzerland introduced agri-environment schemes (AES) to counteract declining agro-biodiversity. Among numerous bryophytes of the agricultural landscape, arable bryophytes have adapted to recurrent tillage. They are short-lived above-...
Article
Old herbarium specimens and historical floristic data give insight into regional floras for given time periods. They often cover historical time periods for which few other data are available. Herbaria thus allow the study of changes of the flora of a region across time. Using a 150-year-old regional herbarium together with a historical publication...
Article
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Resurveys of vegetation plots are prone to several errors that can result in misleading conclusions. Minimizing such errors and finding alternative approaches for analyzing resurvey data are therefore important. We focused on inter‐observer error and excluded other sources of variation. Our main questions were: How large is the inter‐observer error...
Article
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30 Jahre Monitoring zeigen, dass die Renaturierung des Hochmoors Hagenmoos im Kanton Zürich insgesamt erfolgreich ist. Die Licht-und Feuchteverhältnisse haben sich verbessert und vielerorts haben sich grosse Torfmoosdecken gebildet. Die Renaturierungsziele sind aber noch nicht erreicht. Un suivi de la renaturation du haut-marais d’Hagenmoos (ZH) s...
Article
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Eine Auswertung von Orthofotos zeigt, dass die Wanderobjekte des Inventars der Amphibienlaichgebiete von nationaler Bedeutung (IANB) heute noch etwa gleich gross sind wie Mitte der 1980er Jahre. Sie haben sich auch wenig im Raum bewegt. Grosse und gut vernetzte Wanderobjekte sind wichtig für die Kreuzkröte. Une analyse d’orthophotographies montre...
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The importance of environmental difference among sites and dispersal limitations of species to the explanation of diversity differs among biological systems and geographical regions. We hypothesized that climate and then dispersal limitation will predominantly explain the similarity of alpine vegetation at increasing distances between pairs of regi...
Article
Wie effektiv sind Schutzgebiete bei der Erhaltung von Artvorkommen? Um diese Frage anzugehen, verwendeten wir einen Datensatz, für den Tausende historischer Fundorte von Pflanzenarten in der Schweiz wiederbesucht und auf das aktuelle Vorkommen dieser Arten überprüft wurden. Unsere Ergebnisse zeigen: Je mehr geschützte Flächen in einer Landschaft vo...
Article
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Die Wirkungskontrolle Biotopschutz Schweiz zeigt – neben einer Reihe von positiven Entwicklungen –, dass sich der Zustand der Biotope von nationaler Bedeutung trotz gesetzlichem Schutz weiterhin verschlechtert. Dies verdeutlicht den grossen Handlungsbedarf für Renaturierungen und Pflegemassnahmen, damit der langfristige Erhalt von Arten und Lebensr...
Article
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En dehors de toute une série de développements positifs, le suivi des effets de la protection des biotopes en Suisse montre que l’état des biotopes d’importance nationale a continué de se dégrader malgré la protection légale. Cela démontre l’urgente nécessité de prendre des mesures de renaturation et d’entretien pour que la conservation à long term...
Article
In der 17. Folge der ‚Beiträge zur bryofloristischen Erforschung der Schweiz‘ werden neue Fundorte von seltenen, gefährdeten oder anderweitig bemerkenswerten Moosen vorgestellt. Dabei handelt es sich um folgende Arten: Ephemerum recurvifolium, Leptophascum leptophyllum, Lewinskya killiasii subsp. killiasii, Microbryum starckeanum, Polytrichum nanum...
Article
Meylania 69 (2022): 5-14 In der 17. Folge der ‚Beiträge zur bryofloristischen Erforschung der Schweiz' werden neue Fundorte von seltenen, gefährdeten oder anderweitig bemerkenswerten Moosen vorgestellt. Dabei handelt es sich um folgende Arten: Ephemerum recurvifolium, Leptophascum leptophyllum, Lewinskya killiasii subsp. killiasii, Microbryum star...
Article
1. Niche filtering predicts that abundant species in communities have similar traits that are suitable for the environment. However, niche filtering can operate on distinct axes of trait variation in response to different ecological conditions. Here, we use a trait-based approach to infer niche filtering processes and (1) test if abundant and rare...
Article
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Ähnlich wie die Wildkräuter in Äckern sind auch die typischen, hochspezialisieren Ackermoose stark gefährdet und im Rückgang begriffen. Biodiversitätsförderflächen könnten dazu beitragen, ihren Rückgang zu stoppen. Entscheidend für den Erhalt der Ackermoose im Schweizer Kulturland ist jedoch, dass genügend und sorgfältig ausgewählte Getreidestoppel...
Article
A typical degraded mountain bog in the Swiss Alps was restored by cessation of grazing and partial rewetting. We observed the development of the vegetation over 15 years, starting immediately after the grazing cessation (4 years before rewetting). Cessation of grazing stimulated the recolonisation of bare peat and the establishment of bryophytes. W...
Article
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Die Qualität der Schweizer Moore geht weiterhin zurück. Renaturierungen können jedoch negative Trends aufhalten und sogar umkehren. Über aktuelle Entwicklungen und wirksame Massnahmen tauschten sich 130 Fachleute aus Forschung und Praxis an einer Tagung an der Eidg. Forschungsanstalt WSL aus. La qualité des marais suisses continue de se dégrader m...
Article
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Aktuelle Daten der Wirkunsgkontrolle Biotopschutz Schweiz WBS zeigen, dass die Moore weiterhin trockener werden. Hauptursache sind aktive Entwässerungsgräben, aber auch der Klimawandel. In: Hotspot 44; page 29 (https://scnat.ch/de/uuid/i/62e64055-defc-565d-854e-d24eeae7bc6f-HOTSPOT_4421_Biodiversit%C3%A4t_wird_Mainstream)
Article
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Since the early 1990s, Switzerland designated about 7000 sites of national importance to protect precious habitats and their biodiversity. These legally protected sites include mires dry grasslands, flood plain habitats and amphibian breeding sites, and are a crucial element of the network of protected sites in Switzerland. In 2011, the program “Mo...
Article
Aim Pleistocene erratic boulders are rocks that were relocated by glaciers during the Ice Ages. When their geology differs from the geology of the landscape that surrounds them, erratic boulders form habitat islands for regionally rare, edaphically specialised, rock-dwelling cryptogams (bryophytes, ferns and lichens). Such boulders constitute terre...
Article
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Raised bogs as huge carbon stocks are of worldwide importance, but they have been severely decreased and degraded globally. To stop this development, restoration measures are being carried out in many countries. The recovery of raised bogs is, however, slow and the success of restoration projects is uncertain. Long-term monitoring is thus needed. T...
Article
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Aims Understanding fine-grain diversity patterns across large spatial extents is fundamental for macroecological research and biodiversity conservation. Using the GrassPlot database, we provide benchmarks of fine-grain richness values of Palaearctic open habitats for vascular plants, bryophytes, lichens and complete vegetation (i.e., the sum of the...
Article
Modellierte Verbreitungskarten für die häufigsten Gehölzarten der Schweiz Um der Waldbewirtschaftung und -planung sowie der Forschung und dem Naturschutz eine neue Grundlage zur Verfügung zu stellen, wurde im Projekt MoGLI (Modellierung Gehölzarten LFI) die potenzielle Verbreitung der häufigsten Gehölzarten für den Schweizer Wald modelliert. Zur rä...
Article
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Aim The number of naturalized (i.e. established) alien species has increased rapidly over recent centuries. Given the differences in environmental tolerances among species, little is known about what factors determine the extent to which the observed size of the naturalized range of a species and hence the extent to which the observed richness of n...
Article
Full-text available
Agricultural intensification represents one of the major drivers for the dramatic loss of biodiversity worldwide. To halt the decline of farmland biodiversity, Switzerland adopted agri-environment schemes (AES) in 1998. Here, we monitored the occurrence, abundance and habitats of two species of arable bryophyte specialists, the Field hornwort (Anth...
Article
Full-text available
Aim European grassland communities are highly diverse, but patterns and drivers of continental‐scale diversities remain elusive. This study analyses taxonomic and functional richness in European grasslands along continental‐scale temperature and precipitation gradients. Location Europe. Methods We quantified functional and taxonomic richness of 5...
Article
In der 16. Folge der ‚Beiträge zur bryofloristischen Erforschung der Schweiz‘ werden neue Fundorte von seltenen, gefährdeten oder anderweitig bemerkenswerten Moosen vorgestellt. Dabei handelt es sich um folgende Arten: Anacamptodon splachnoides, Campylostelium saxicola, Grimmia crinita, Grimmia montana, Racomitrium nivale, Riccia cillifera aggr., S...
Article
Biodiversity varies with elevation and is affected by disturbances. However, little is known about how the associations between the diversities of different bryophyte and macrolichen functional-taxonomic groups are altered along elevational gradients and by disturbances. Knowledge on the associations between these functional-taxonomic groups might...
Article
Monitoring programmes serve to detect trends in the distribution and abundance of species. To do so, monitoring programmes often use static state variables. Dynamic state variables which describe population dynamics might be more valuable because they allow for a mechanistic understanding of the processes which lead to population trends. We fit mul...
Conference Paper
Full-text available
Background and Aims Since the early 1990s, Switzerland designated about 7000 sites of national importance to protect precious habitats and their biodiversity. These legally protected sites include mires dry grasslands, flood plain habitats and amphibian breeding sites, and are a crucial element of the network of protected sites in Switzerland. In 2...
Article
Aim Alpine habitats support unique biodiversity confined to high‐elevation areas in the current interglacial. Plant diversity in these habitats may respond to area, environment, connectivity and isolation, yet these factors have been rarely evaluated in concert. Here we investigate major determinants of regional species pools in alpine grasslands,...
Article
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Context - Dead wood is a key habitat for saproxylic species, which are often used as indicators of habitat quality in forests. Understanding how the amount and spatial distribution of dead wood in the landscape affects saproxylic communities is therefore important for maintaining high forest biodiversity. Objectives - We investigated effects of th...
Article
Orthodontium lineare, a neophyte originating from the southern hemisphere and nowadays widely distributed in Europe, is newly reported for Switzerland, where it was found in the Canton of Schaffhausen in 2020. The species was growing in a single patch on a rotten Quercus trunk in a European beech forest together with Lophocolea heterophylla, Hypnum...
Article
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Rock climbing is popular, and the number of climbers rises worldwide. Numerous studies on the impact of climbing on rock‐dwelling plants have reported negative effects, which were mainly attributed to mechanical disturbances such as trampling and removal of soil and vegetation. However, climbers also use climbing chalk (magnesium carbonate hydroxid...
Article
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Die Wirkungskontrolle Biotopschutz Schweiz untersucht, ob Biotope von nationaler Bedeutung in ihrer Qualität erhalten bleiben. Trotz Schutzbemühungen verschlechterte sich jedoch der Zustand des artenreichen Grünlands in den vergangenen Jahren. Nutzungsaufgabe und zunehmende Verbuschung werden als Ursache vermutet. Besonders ausgeprägt ist dieser Tr...
Article
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Um Biodiversität langfristig schützen zu können, sind Angaben zum Zustand und zur Entwicklung von Arten und Lebensräumen unabdingbar. Nur so können Probleme frühzeitig erkannt und die Wirkung von Schutz- und Fördermassnahmen überprüft werden. In der Schweiz be- stehen mehrere nationale Programme zur Überwachung der biolo- gischen Vielfalt. Ergän...
Article
The 15th issue of the series ‘Contributions to the bryofloristic exploration of Switzerland’ comprises descriptions of new sites of rare, threatened or other remarkable bryophyte species. The following species are included: Barbilophozia quadriloba, Diplophyllum obtusatum, Leptodon smithii, Meesia triquetra, Odontoschisma francisci, Oxystegus daldi...
Article
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Die Wirkungskontrolle Biotopschutz Schweiz (WBS) wurde 2011 vom Bundesamt für Umwelt BAFU und der Eidgenössischen Forschungsanstalt WSL initiiert, um Veränderungen in den Biotopen von nationaler Bedeutung – Kerngebiete der Ökologischen Infrastruktur – zu untersuchen. Die Ersterhebung der Wirkungskontrolle Biotopschutz Schweiz endete 2017, die erste...
Article
Modern multifunctional forest management can profit from high-quality information on the potential distribution of woody species generated by species distribution models (SDMs). Forest structure is an important factor in determining the distribution of woody species in forests, for example because it affects light conditions within forest stands. R...
Article
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GrassPlot is a collaborative vegetation-plot database organised by the Eurasian Dry Grassland Group (EDGG) and listed in the Global Index of Vegetation-Plot Databases (GIVD ID EU-00-003). Following a previous Long Database Report (Dengler et al. 2018, Phytocoenologia 48, 331–347), we provide here the first update on content and functionality of Gra...
Book
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Geschützte Flächen sind unverzichtbare Instrumente für die Erhaltung und Förderung der Biodiversität. Für fünf Lebensräume sind in der Schweiz nationale Biotopinventare in Kraft: Hoch- und Übergangsmoore, Flachmoore, Auengebiete, Amphibienlaichgebiete sowie Trockenwiesen und -weiden. Die Inventare enthalten 6831 Objekte (Stand 2019), die in Fläche...
Book
Full-text available
The habitats of national importance, including fens, raised bogs, dry grasslands, riparian areas, flood plains, and amphibian breeding sites, are a crucial element of the network of protected sites in Switzerland. In 2011, the Federal Office for the Environment (FOEN) and the Swiss Federal Research Institute WSL launched the joint project “Monitori...
Book
Full-text available
Les surfaces protégées constituent des instruments indispensables pour préserver et promouvoir la biodiversité. En Suisse, cinq types de milieux naturels sont couverts par les inventaires des biotopes d’importance nationale : les hauts-marais et les marais de transition, les bas-marais, les zones alluviales, les sites de reproduction de batraciens...
Article
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Wie ist der Zustand der Biotope von nationaler Bedeutung? Wie entwickeln sie sich über die Zeit? Hat sich ihre Qualität verändert? Diese Fragen beantwortet die Wirkungskontrolle Biotopschutz Schweiz. Vegetationsaufnahmen und Luftbildanalysen sind dabei eine wichtige Grundlage, um Veränderungen aufzuzeigen.
Article
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Resurveys of historical plots are important to study vegetation changes over time. However, there is a high potential of relocation error, as historical plots were usually not permanently marked, which might result in misleading interpretations of changes. Quasi-permanent plots can relatively well be relocated, because of available information on t...
Book
Full-text available
This Red List is a summary of the conservation status of the European species of mosses, liverworts and hornworts, collectively known as bryophytes, evaluated according to IUCN’s Guidelines for Application of IUCN Red List Criteria at Regional Level. It provides the first comprehensive, region-wide assessment of bryophytes and it identifies those s...
Article
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In der Schweiz sind seit 1945 rund 95% der Trockenwiesen und -weiden (TWW) verloren gegangen. Um die verbliebene Fläche dieser wertvollen Lebensräume zu bewahren, hat die Schweiz 3631 TWW von nationaler Bedeutung ausgewiesen. Ob sich diese Biotope gemäss den Schutzzielen entwickeln und in ihrer Qualität erhalten bleiben, wird in der Wirkungskontrol...
Data
This dataset includes species lists of bryophytes and macrolichens (presence/absence) sampled on the forest floor and on trees in disturbed and undisturbed plots along elevation gradients in the laurel forests of Madeira island. It also contains species specific information (bryophytes: red list status, endemic status, taxonomic group, life strateg...
Article
Studies on bryophyte and lichen diversity patterns along elevational gradients are scarce, although this approach can serve as space‐for‐time substitution to predict diversity changes because of climate warming. Therefore, we investigated bryophytes and macrolichens in disturbed and undisturbed stands along an elevational gradient in the unique lau...
Article
In Switzerland, steppe vegetation is restricted to inner alpine dry valleys in the West (Valais) and the East (Grisons). They harbour many specialist and threatened species. In 2011, a long-term program was established to monitor changes in Swiss habitats of national importance. Here, we studied patterns of vascular plant diversity in a subset of 1...