Markus Bernhardt-Römermann

Institut für Ökologie und Evolution | Professur für Ökologie | AG Vegetationsökologie

Ziegenhainer Tal bei Jena

Foto: Markus Bernhardt-Römermann
Ziegenhainer Tal bei Jena

Markus Bernhardt-Römermann, apl. Prof. Dr.

Leiter AG Vegetationsökologie
Institut für Ökologie und Evolution | Professur für Ökologie
Markus Bernhardt-Römermann
Foto: Jürgen Scheere
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Inspektorhaus, Raum 104
Fürstengraben 26
07743 Jena Google Maps – LageplanExterner Link

Forschungsinteressen

  • Vegetationsveränderungen in Folge von Landnutzungs-, Klimawandel und Nährstoffeinträgen
  • Critical loads für Stickstoff
  • Waldökologie, insb. Naturwaldforschung
  • Vegetationsdatenbanken und Dauerbeobachtung 
  • Savannenökologie
  • Statistik in der Vegetationsökologie
  • Funktionelle Merkmale

Lebenslauf

  Beschäftigungen
Seit 10/2013 Wissenschaftlicher Angestellter am Institut für Ökologie und Evolution, Fakultät für Biowissenschaften, Friedrich-Schiller-Universität Jena
01/2012 bis 09/2013 Wissenschaftlicher Angestellter am Institut für Botanik, AG Ökologie und Naturschutz, Fachbereich Biologie, Universität Regensburg
  • Habilitation zum Thema “Understanding vegetation dynamics – applications and methodological aspects of functional analyses”; November 2014
11/2009 bis 12/2011 Wissenschaftlicher Angestellter der Abteilung Ökologie und Geobotanik, Institut für Ökologie, Evolution & Diversität, Fachbereich Biowissenschaften, Goethe-Universität Frankfurt a.M.
  • Elternzeit; 02/2011 und 09/2011 bis 12/2011
04/2006 bis 10/2009 Wissenschaftlicher Angestellter der Abteilung Waldbau und Waldökologie der gemäßigten Zonen, Fakultät für Forstwissen­schaften und Waldökologie, Georg-August-Universität Göttingen
  • Elternzeit; 01/2009 bis 10/2009

06/2005 bis 03/2006

 Wissenschaftlicher Angestellter am Lehrstuhl für Botanik, Fachbereich Biologie, Universität Regensburg
10/2001 bis 05/2005 Wissenschaftlicher Angestellter am Fachgebiet Geobotanik, Department für Ökologie, Wissenschaftszentrum Weihenstephan der TU München, Studienfakultät für Forstwissenschaften und Ressourcenmanagement
  • Promotion zu dem Thema: Reaktionen der Wald­bodenvegetation auf erhöhte Stickstoffeinträge: Analyse und Vorher­sage von Vegetationsveränderungen anhand von funktionellen Merkmalen
  • Lehrauftrag für die Geobotanischen Übungen am Fachbereich Wald und Forstwirtschaft der Fachhochschule Weihenstephan (04/2004 bis 06/2004)
04/2001 bis 07/2001 Ökologisches Praktikum an der Université Paul Cézanne (Aix-Marseille III, Südfrankreich); Projekt: Ecology of the Mediterranean grassland ‘La Crau’ (Provence, France)
10/1995 bis 04/2001 Biologiestudium (Diplom) an der Philipps-Universität Marburg mit den Hauptfächern Spezielle Botanik, Ökologie und Geographie
  • Diplomarbeit im Fachgebiet Spezielle Botanik zu dem Thema Vergleichende Untersuchungen zur Blattanatomie und -morphologie ausgewählter Araliaceae

Publikationen

Eine komplette Liste meiner Publikationen finden Sie auf den Seiten der Vegetationsökologie oder bei ResearcherID.Externer Link

34 Publikationen filtern

Die Publikationen filtern

Hervorgehobene Autoren sind Mitglieder der Forschungsgruppe.

  1. Greater Thermophilisation in Communities of Juveniles Than Adults in Temperate European Forests

    Autoren
    M. Caron, P. Vangansbeke, F. Zellweger, K. Verheyen, L. Baeten, R. Hédl, M. Bernhardt-Römermann, I. Berki, J. Brunet, G. Decocq, S. Díaz, T. Dirnböck, T. Durak, T. Heinken, B. Jaroszewicz, M. Kopecký, J. Lenoir, M. Macek, M. Malicki, F. Máliš, T. Nagel, P. Petřík, K. Reczyńska, R. Pielech, W. Schmidt, K. Świerkosz, B. Teleki, M. Wulf, N. Tobias, F. Rodríguez-Sánchez, D. Waller, P. De Frenne
    Erscheinungsjahr
    Erschienen in:
    Journal of vegetation science: official organ of the International Association for Vegetation Science
    Universitätsbibliographie Jena:
    fsu_mods_00030123Externer Link

  2. Forest type consistently shapes bird communities across seasons: Insights from passive acoustic monitoring

    Autoren
    E. Felgentreff, D. Singer, M. Bernhardt-Römermann
    Erscheinungsjahr
    Erschienen in:
    Forest Ecology and Management
    Forest management affects forest-dwelling taxa, such as birds, which play diverse roles in ecosystem functioning. While birds are frequently studied, surveys typically are conducted during the breeding season, overlooking non-breeding periods during which birds may have different resource requirements. Understanding year-round dynamics of habitat use is essential to inform management practices that support bird communities. We used passive acoustic monitoring to study bird assemblages across a gradient from deciduous broadleaved to coniferous forest stands around the city of Jena (Thuringia, Germany). We investigated how season, forest type, and environmental variables influence species taxonomic diversity, community composition, and functional diversity. Birds were monitored in 30-day periods during winter, spring, summer, and autumn 2024 using AudioMoth recorders and BirdNET for species identification. Species diversity varied significantly by season, peaking in spring and summer and declining in autumn and winter; forest type had no effect. Community composition was primarily driven by season, but within seasons, birds clustered by forest type. Season influenced functional dispersion and dissimilarity, but not evenness; forest type influenced only functional dispersion. Overall, seasonality, especially migration dynamics, most strongly impacts bird diversity. Within seasons, forest type structures community composition but does not affect taxonomic or functional diversity. Persistent functional diversity despite taxonomic shifts suggests functional redundancy, indicating resilience to habitat change. Coniferous stands emerged as harbouring distinct, but equally diverse bird species compared to deciduous stands. Forest managers should prioritise a mix of forest types to sustain rich bird communities and ensure long-term ecosystem functionality.
    Universitätsbibliographie Jena:
    fsu_mods_00034616Externer Link

  3. Contrasting thermophilization among forests, grasslands and alpine summits

    Autoren
    K. Yue, P. Vangansbeke, I. Myers-Smith, D. Waller, K. Verheyen, M. Bernhardt-Römermann, L. Baeten, I. Staude, A. Bjorkman, R. Hédl, C. Andrews, E. Barni, T. Becker, A. Becker-Scarpitta, J. Benito-Alonso, J. Bennie, I. Berki, V. Blüml, J. Brunet, J. Bullock, H. Van Calster, M. Carbognani, M. Chudomelová, D. Closset-Kopp, P. Dan Turtureanu, G. Daskalova, G. Decocq, J. Dick, M. Diekmann, T. Dirnböck, T. Durak, O. Eriksson, B. Erschbamer, B. Graae, T. Heinken, M. Hermy, P. Horchler, U. Jandt, B. Jaroszewicz, R. Kanka, J. Kollár, M. Kopecký, T. Kudernatsch, A. Lamprecht, J. Lenoir, M. Macek, M. Malicki, F. Máliš, O. Michelsen, F. Mitchell, T. Naaf, T. Nagel, M. Newman, A. Newton, L. Nicklas, L. Oddi, A. Orczewska, S. Orsenigo, A. Ortmann-Ajkai, J. Ouden, H. Pauli, G. Peterken, P. Petřík, R. Pielech, M. Puşcaş, C. Randin, K. Reczyńska, C. Rixen, F. Schei, W. Schmidt, J. Šebesta, A. Stachurska-Swakon, T. Standovár, K. Świerkosz, B. Teleki, J. Theurillat, T. Ursu, T. Vanneste, M. Vellend, P. Vergeer, O. Vild, L. Villar, P. Vittoz, M. Winkler, S. Wipf, F. Wu, S. Zhang, P. De Frenne
    Erscheinungsjahr
    Erschienen in:
    Nature: the international journal of science
    Universitätsbibliographie Jena:
    fsu_mods_00035471Externer Link

  4. The direct seeding of pedunculate oak (Quercus robur) and silver fir (Abies alba): environmental constraints, the role of seed provenance, and implications for forest biodiversity

    Autor
    T. Medicus
    Erscheinungsjahr
    Central European forests are currently experiencing a widespread decline in integrity and health due to the impacts of climate change. In particular, the increased frequency of drought has led to a surge in forest mortality, irreversibly altering the composition of these forests. To adapt forests to changing conditions, forest practitioners and researchers are working to establish speciesdiverse forests with greater climatic resilience. One of the most crucial questions in this effort is species selection. As decisions made today will shape the future of tomorrow's forests, they need to be made on a well-established scientific basis. However, this diversification of forests introduces a second challenge regarding how to achieve this goal. Since the potential for natural regeneration to establish such forests is often limited, artificial regeneration is necessary to increase tree species diversity. This dissertation contributes to the ongoing discourse by evaluating the potential of the two tree species, Abies alba and Quercus robur, for their use in climate-adapted forests and investigating the impact of the artificial regeneration method of direct seeding on biodiversity in forests and its use for the regeneration of the two species. In the first manuscript, the long-term impact of direct seeding on forest floor species richness within closed forest stands was investigated through a space-for-time-substitution vegetation survey, which revealed short-term increases in both herbaceous and bryophyte diversity, as well as differences in the recolonization rates of the two groups. A climate chamber experiment evaluated the drought tolerance of A. alba with respect to provenance differences by subjecting seedlings from four different provenances to moderate and severe soil water deficits and evaluating their growth and photosynthetic responses. The experiment revealed the species' high tolerance for moderate drought in the seedling stage, and that provenance differences influence recovery from severe drought. The third manuscript focused on different biotic and abiotic microsite conditions and their influence on both species growth and photosynthetic efficiency, highlighting the importance of the light regime and longterm water availability for seedlings originating from direct seeding. Building on the results of the manuscripts and expanding on them, I then discussed possible ways to further improve the effect of direct seeding on biodiversity through the combination of different species. I then showcased the provenance differences in drought adaptations of Q. robur, and extended this review to genetic lineages of both species. Lastly, I synthesized the results and discussed them towards their practical application, formulating management interventions for the improvement of microsite conditions utilizing higher species richness and seed source selection as tools of adaptation.
    Universitätsbibliographie Jena:
    fsu_mods_00036736Externer Link

  5. The influence of environment on the development of Abies alba and Quercus robur seedlings in montane acidophilous spruce forests

    Autoren
    T. Medicus, A. Tischer, D. Schellenberger Costa, B. Michalzik, K. Wagner, M. Bernhardt-Römermann
    Erscheinungsjahr
    Erschienen in:
    Journal of forestry research
    The conversion of Norway spruce stands into mixed-species forests is currently one of the most pressing challenges to ensure the stability of forest ecosystems in Central Europe. Recently, direct seeding as a method of artificial regeneration and species (re-)introduction has received increased attention in forestry. Considering that environmental conditions have a strong influence on the growth performance of direct-seeded plants, we investigated how differences in soil and environmental conditions affect the growth performance of silver fir (Abies alba Mill.) and pedunculate oak (Quercus robur L.) seedlings. Our study focused on closed-canopy and open-canopy (canopy removal) Norway spruce stands in a low mountain forest in central Germany. Our data indicates that the growth performance of A. alba and Q. robur seedlings is mainly influenced by the availability of photosynthetically active radiation (PAR). The growth of A. alba increased with a higher PAR-ratio, whereas the photosynthetic efficiency, as measured by F v /F m (chlorophyll fluorescence), showed sensitivity to it. Conversely, the growth performance of Q. robur showed a linear increase with light availability. Nutrient availability was the second most important factor, while soil pH alone showed no significant effect. The volumetric water content showed no direct effect, though drought appeared to reduce growth. The results stress that A. alba is sensitive to abrupt changes in the light regime at this early stage of development, highlighting the key role of canopy longevity in facilitating growth. Q. robur, on the other hand, appears to be well suited to sites at high risk of canopy loss due to disturbance or where the canopy has previously been removed.
    Universitätsbibliographie Jena:
    fsu_mods_00029891Externer Link

  6. Ecological assessment of forest management approaches to develop resilient forests in the face of global change in Central Europe

    Autoren
    F. Huth, A. Tischer, P. Nikolova, H. Feldhaar, A. Wehnert, L. Hülsmann, J. Bauhus, K. Heer, J. Vogt, C. Ammer, U. Berger, M. Bernhardt-Römermann, M. Böhme, H. Bugmann, J. Buse, L. Demant, I. Dörfler, J. Ewald, E. Feldmann, A. Fichtner, M. Gossner, T. Grams, K. Häberle, J. Hagge, H. Hartmann, S. Herzog, A. Kahmen, U. Kohnle, D. Krabel, K. Krämer-Klement, J. Kreyling, M. Manthey, K. Mellert, P. Meyer, A. Mölder, L. Muffler-Weigel, B. Ohse, L. Opgenoorth, B. Rewald, A. Rothe, N. Ruehr, T. Scharnweber, M. Scherer-Lorenzen, J. Schmeddes, J. Schmerbeck, M. Schmidt, D. Seidel, F. Thomas, M. Tiebel, G. von Oheimb, S. Wagner, R. Weigel, M. Wilmking, C. Zang, B. Schuldt
    Erscheinungsjahr
    Erschienen in:
    Basic and applied ecology : journal of the Gesellschaft für Ökologie
    Universitätsbibliographie Jena:
    fsu_mods_00025024Externer Link

  7. Small net local temporal changes in taxonomic, functional, and phylogenetic biodiversity across European temperate forests

    Autoren
    L. Wei, E. De Lombaerde, T. Vanneste, P. Sanczuk, L. Baeten, J. Lenoir, K. De Pauw, K. Verheyen, M. Bernhardt-Römermann, A. Becker-Scarpitta, J. Brunet, M. Chudomelová, G. Decocq, M. Diekmann, T. Durak, R. Hédl, T. Heinken, P. Horchler, B. Jaroszewicz, M. Kopecký, M. Macek, F. Máliš, T. Naaf, T. Nagel, A. Orczewska, P. Petřík, K. Reczyńska, F. Schei, W. Schmidt, J. Šebesta, A. Stachurska-Swakoń, T. Standovár, K. Świerkosz, B. Teleki, H. Van Calster, O. Vild, D. Waller, M. Wulf, P. De Frenne
    Erscheinungsjahr
    Erschienen in:
    New phytologist: international journal of plant science
    Universitätsbibliographie Jena:
    fsu_mods_00027245Externer Link

  9. Impacts of land use and cover changes on the occurrence and behaviour of Indian desert gerbil (Meriones hurrianae) in Thar desert, India

    Autor
    A. Chatterjee
    Erscheinungsjahr
    The Thar Desert of India ranks among the most densely populated deserts globally, yet it lacks a well-defined regulatory framework for managing land use. Unsustainable agriculture and unrestrained livestock grazing are major threats to the wildlife inhabiting the Thar Desert. The adoption of global agro-technologies, coupled with government-funded irrigation projects, has significantly intensified land use and land cover (LU/LC) changes. To assess the impacts of ongoing LU/LC changes on the occurrence and behaviour of an ecologically important prey species, this study focused on the Indian desert gerbil Meriones hurrianae (IDG), a rodent native to the Thar Desert. My studies revealed that the IDG prefers to construct burrow systems mainly in mixed vegetation land cover, followed by agricultural lands with native vegetation, and shrublands. Although the combined mean relative abundance of Capparis decidua and Haloxylon salicornicum is less than 10%, most gerbil burrow systems were found beneath these two shrubs, along with Citrullus colosynthis. This rodent relies on these native plants for food and shelter, and its occurrence is positively correlated with their presence. The conversion of natural landscapes into croplands led to a significant decline in suitable habitats for native species in the Thar Desert, creating an idiosyncratic pattern characterised by the spatial confinement of both IDG and its predators into limited patches with adequate microhabitat conditions. Since the effects of grazing on gerbil presence remain uncertain, the occurrence probability of IDG can be mathematically estimated using habitat variables such as land cover types, availability of native shrubs providing food and shelter, and predator presence. As the sustenance of native biodiversity in this arid landscape depends on suitable land covers, legal protection and effective land use policies are essential for conserving the Thar Desert.
    Universitätsbibliographie Jena:
    fsu_mods_00034923Externer Link

  10. Impact of fine woody debris enrichment on vegetation and microclimate in managed post-disturbance areas after spruce dieback

    Autor
    H. Großgott
    Erscheinungsjahr
    Large-scale dieback of Norway spruce (Picea abies (L.) H.Karst.) in Central Europe has created extensive post-disturbance areas that are typically managed by salvage logging. While logging residues are often removed or concentrated in skid trails, retaining fine woody debris (FWD) may improve microsite conditions for tree regeneration by modifying microclimate and competing vegetation. This study investigates the effects of local FWD enrichment on microclimate and vegetation cover on Norway spruce calamity areas in the Thuringian Forest and the Thuringian Slate Mountains (Germany). At four study areas, 48 plots with manually enriched FWD were paired with 48 nearby control plots without added woody debris. Soil moisture and soil, surface and near-ground air temperature were recorded with TOMST TMS-4 dataloggers from May to August 2024. Vegetation cover was visually estimated in 50 cm radius plots around the dataloggers. Linear mixed-effects models and, for the vegetation cover, a generalized mixed-effects model with a beta regression were used to test for differences between FWD and control plots. FWD enrichment significantly increased volumetric soil water content by about 4.5 percentage points compared to control plots. Mean and maximum soil temperatures were reduced on FWD plots, and surface temperatures showed buffering. Mean values were lower, daily maxima decreased by more than 4 °C and daily minima increased about 1.4 °C. Effects on near-ground air temperature at 15 cm height were weaker but indicated slightly cooler maxima and higher minima. Total vegetation cover declined from roughly 75% on control plots to about 51% on FWD plots. These results show that local FWD enrichment can create cooler, moister and less densely vegetated microsites on Norway spruce calamity areas. However, further research is needed to test whether the observed changes in microclimate and vegetation translate into improved germination, survival and growth of natural and artificial regeneration in these specific conditions.
    Universitätsbibliographie Jena:
    fsu_mods_00035325Externer Link

  11. The effects of deadwood on tree regeneration and microsites: A systematic review

    Autoren
    F. Steinebrunner, A. Tischer, T. Medicus, F. Huth, M. Bernhardt-Römermann
    Erscheinungsjahr
    Erschienen in:
    Forest Ecology and Management
    Large-scale disturbances like fire, bark beetle outbreaks, and windstorms increasingly affect forest ecosystems. Rather than salvage logging, retaining deadwood may support tree species regeneration. This systematic review summarizes the role of deadwood in creating microsites to facilitate tree regeneration. We conducted an English-language literature search in the Web of Science and Scopus. After the title-abstract screening, we classified studies that met our eligibility criteria into three subtopics: deadwood as (1) substrate, (2) browsing protection, and (3) microclimate improvement. We then performed a snowball sampling using the literature search tool ResarchRabbit. The final qualitative synthesis included 161 studies (browsing: n = 34, microsite: n = 64, substrate: n = 68; five studies occurred in two subtopics). Our review revealed the importance of coarse woody debris (CWD) as a regeneration substrate, particularly for small-seeded conifers, which preferred CWD over the forest floor. Establishment success depended on the decomposition stage, CWD species, stem diameter, and moss cover. Deadwood reduced browsing pressure, where fallen trees formed barriers limiting ungulate browsing access and individual logs or branch piles protected seedlings. Logs enhanced tree species regeneration on open sites by improving seedling survival and growth, especially on the north and nearby sides. Deadwood, including logs, snags, and logging slash, significantly influenced the microclimate by moderating soil temperatures. The effects on soil moisture were variable. In conclusion, deadwood retention has the potential to serve as a modular toolbox in post-disturbance forest management.
    Universitätsbibliographie Jena:
    fsu_mods_00027077Externer Link

  12. Soil scarification does not affect the medium-term species composition of Norway spruce stands

    Autoren
    T. Medicus, A. Tischer, B. Michalzik, K. Wagner, M. Bernhardt-Römermann
    Erscheinungsjahr
    Erschienen in:
    Frontiers in Forests and Global Change
    Soil scarification, which involves the disruption of the top layer of soil, is a common method utilized to promote the regeneration of tree species on clear-cut and calamity areas. In the context of adapting forests to become climate-resilient mixed species forests, this method could also be used to promote tree regeneration under intact canopies, either exclusively or in combination with direct seeding. However, evidence on the impact of this method on the composition of forest floor vegetation, including bryophytes, is lacking and needs to be investigated. This is of importance because the forest floor vegetation significantly contributes to species richness in temperate forests. To address how and to what extent soil scarification affects the forest floor species composition, we conducted a space-for-time-substitution study, creating a chronosequence spanning a 13-year period, to investigate the effect of soil scarification on forest floor vegetation in Norway spruce (Picea abies) stands in a lower montane forest in central Germany. Our results showed that soil scarifications were quickly recolonized by bryophyte species, whereas herbaceous species cover took around a decade to reach a similar level of establishment as the undisturbed forest floor. Species composition initially shifted in favor of early successional species. In the long term, however, the species composition converged back to the undisturbed state. Tree regeneration diversity especially benefitted from scarification, making it a viable method for intact forest stands, particularly given that it does not appear to exert any adverse effect on forest floor vegetation.
    Universitätsbibliographie Jena:
    fsu_mods_00029565Externer Link
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