Journal of Vegetation Science

Cover image for Vol. 24 Issue 4

July 2013

Volume 24, Issue 4

Pages 589–776

  1. Commentaries

    1. Top of page
    2. Commentaries
    3. Original Articles
    4. Forum
    1. You have free access to this content
      A closer look at the species behind abundance–occupancy relationships (pages 589–590)

      Ove Eriksson

      Version of Record online: 7 JUN 2013 | DOI: 10.1111/jvs.12063

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      Guedo & Lamb (), in this issue of the Journal of Vegetation Science, used a 35-yr data series from two prairie communities to show that abundance–occupancy relationships change over time. Scrutinizing the details behind this finding, they show that species groups follow different trajectories during succession after disturbance. These results will inspire further species-level studies unraveling mechanisms behind abundance–occupancy relationships.

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      On the importance of edaphic variables to predict plant species distributions – limits and prospects (pages 591–592)

      Wilfried Thuiller

      Version of Record online: 7 JUN 2013 | DOI: 10.1111/jvs.12076

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      Although the importance of edaphic parameters on plant growth and survival is known, they are rarely incorporated as predictors in plant’ species distribution models (SDM). Dubuis et al., in this issue, show they may improve the performance of plant SDMs in Alpine ecosystems. It paves the way for more comprehensive assessments of the values of including edaphic variables into SDMs.

  2. Original Articles

    1. Top of page
    2. Commentaries
    3. Original Articles
    4. Forum
    1. You have free access to this content
      Improving the prediction of plant species distribution and community composition by adding edaphic to topo-climatic variables (pages 593–606)

      Anne Dubuis, Sara Giovanettina, Loïc Pellissier, Julien Pottier, Pascal Vittoz and Antoine Guisan

      Version of Record online: 29 OCT 2012 | DOI: 10.1111/jvs.12002

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      We tested the importance of seven edaphic variables as predictors in plant species distribution models in addition to topo-climatic variables. We found that soil pH and nitrogen content showed the highest contribution to model amelioration, more particularly for species with low specific leaf area, and acidophilic preferences, tolerating low soil pH and high humus content.

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      Temporal changes in abundance–occupancy relationships within and between communities after disturbance (pages 607–615)

      Digit D. Guedo and Eric G. Lamb

      Version of Record online: 29 OCT 2012 | DOI: 10.1111/jvs.12006

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      Studies on the role succession plays in shaping abundance-occupancy relationships are limited, focusing on cumulative rather than discrete disturbance events. No studies have looked at discrete disturbance-recovery scenarios, and successional effects shaping abundance-occupancy relationships through time. Variability in abundance-occupancy relationships occur through time since disturbance both within and between plant communities, and differ with the abundance measure used.

    3. Distribution of habitat specialists in semi-natural grasslands (pages 616–627)

      Zuzana Fajmonová, David Zelený, Vít Syrovátka, Grzegorz Vončina and Michal Hájek

      Version of Record online: 7 NOV 2012 | DOI: 10.1111/jvs.12005

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      The West-Carpathian semi-natural grasslands are habitats with great vegetation diversity. In our large scale study, we found that factors determining the diversity coincide with representation of habitat specialized plants in a community. Communities developed on habitats with long Holocene history have higher representation of habitat specialists, which also tend to grow in habitats with low nutrient availability.

    4. Riparian forests of Southwest Europe: are functional trait and species composition assemblages constrained by environment? (pages 628–638)

      Francisca C. Aguiar, Jorge Orestes Cerdeira, Maria João Martins and Maria Teresa Ferreira

      Version of Record online: 16 NOV 2012 | DOI: 10.1111/jvs.12009

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      We related species and functional trait composition of European South-western riparian forests at near-natural sites with environment. We found that assemblages with very specific functional traits (e.g. Stress-tolerant shrublands) or with homogeneous species composition (e.g. Semi-arid shrublands) were largely constrained to the most extreme environmental conditions. The compositional groups were more closely related with the environmental gradients than functional groups.

    5. Rebuilding after collapse: evidence for long-term cohort dynamics in the native Hawaiian rain forest (pages 639–650)

      Hans Juergen Boehmer, Helene H. Wagner, James D. Jacobi, Grant C. Gerrish and Dieter Mueller-Dombois

      Version of Record online: 27 NOV 2012 | DOI: 10.1111/jvs.12000

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      A widespread canopy dieback affected Hawaii's rainforests in the 1970s. Our long-term observations in permanent plots support the 1987 conceptual model of forest regeneration which predicts rebuilding of the forest with the same canopy species. The lack of association with substrate age suggests that the long-term maintenance of tree cohorts may be related rather to climatic anomalies than to volcanic disturbance.

    6. Competition, exogenous disturbances and senescence shape tree size distribution in tropical forest: evidence from tree mode of death in Central Amazonia (pages 651–663)

      José J. de Toledo, William E. Magnusson and Carolina V. Castilho

      Version of Record online: 28 NOV 2012 | DOI: 10.1111/j.1654-1103.2012.01491.x

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      Using mode of death we identified that competition is the major source of mortality for small trees while exogenous disturbances and senescence predominate for large trees in Central Amazonia. Sources of mortality change across topographic positions, but the shapes of tree size distributions do not, indicating that different processes not assumed in the metabolic theory can produce similar distributions.

    7. Is the closed-crown boreal forest resilient after successive stand disturbances? A quantitative demonstration from a case study (pages 664–674)

      Damien Côté, François Girard, François Hébert, Sylvie Bouchard, Réjean Gagnon and Daniel Lord

      Version of Record online: 12 NOV 2012 | DOI: 10.1111/j.1654-1103.2012.01488.x

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      This paper presents a case study of a natural shift of vegetation communities after compounded disturbances in the closed-crown boreal forest. Due to a combination of short fire interval and insect outbreak, resilience of the spruce forest decreased over the last century. Our case study showed that the transformation of a closed forest into open woodland was fast and naturally irreversible.

    8. Response of ground vegetation and epiphyte diversity to natural age dynamics in a Central European mountain spruce forest (pages 675–687)

      Sebastian Dittrich, Markus Hauck, Mascha Jacob, Andreas Rommerskirchen and Christoph Leuschner

      Version of Record online: 29 OCT 2012 | DOI: 10.1111/j.1654-1103.2012.01490.x

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      We studied the response of ground and epiphyte vegetation to the natural forest age dynamics of an old-growth spruce forest. The study was conducted at Mt. Brocken, Germany, in one of Central Europe few forests which is believed to have been largely untouched by forestry for many centuries. Epiphytes responded more sensitively to the forest dynamics than ground vegetation.

    9. Signatures of autogenic epiphyte succession for an aspen chronosequence (pages 688–701)

      Christopher J. Ellis and Simon C. Ellis

      Version of Record online: 29 OCT 2012 | DOI: 10.1111/j.1654-1103.2012.01492.x

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      The wide observation of increasing epiphyte richness with tree age refutes autogenic processes, suggesting unsaturated communities in the long-term. However, for epiphytes it is necessary to account for a changing habitat area with tree age. Accounting for habitat area, we demonstrate a unimodal trend in species richness, complemented by significant under- and over-dispersion in species traits signalling non-neutral community assembly.

    10. Termite mounds as islands: woody plant assemblages relative to termitarium size and soil properties (pages 702–711)

      Grant S. Joseph, Colleen L. Seymour, Graeme S. Cumming, David H.M. Cumming and Zacheus Mahlangu

      Version of Record online: 29 OCT 2012 | DOI: 10.1111/j.1654-1103.2012.01489.x

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      Large termitaria house plant species different to the surrounding vegetation. We investigated the effect of increasing mound area on soil and plant species composition. Even at small areas (>10 m2), both soils and plant assemblages differed from the matrix. The process of mound-building, and the plants that establish on them, form a positive feedback for establishment of other mound-based species.

    11. Role of seed settleability and settling velocity in water for plant colonization of river gravel bars (pages 712–723)

      Masato Yoshikawa, Yoshinobu Hoshino and Naoto Iwata

      Version of Record online: 7 NOV 2012 | DOI: 10.1111/jvs.12001

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      We estimated seed buoyancy and settling velocity in water for 70 species appeared on a river gravel bar. Most of the species had non-buoyant seeds and their settling velocities corresponded with those of 0.062–0.25 mm sand particles. From these facts, we concluded that seed settleability is more important than buoyancy for plants to colonize river gravel bars.

    12. Stochastic and deterministic processes regulate spatio-temporal variation in seed bank diversity (pages 724–734)

      Alejandro A. Royo and Todd E. Ristau

      Version of Record online: 27 NOV 2012 | DOI: 10.1111/jvs.12011

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      We utilized a 63-yr forest stand chronosequence to assess variability in seed bank community composition. Our sampling design allows us to test changes in diversity over time and among sites. This work documents seed bank richness and abundance (alpha diversity) declines over time and finds that even across sites experiencing similar histories, among-site variability (beta diversity) increases as sites age.

    13. Sorbus aucuparia regeneration in a coarse-grained spruce forest – a landscape scale (pages 735–743)

      Magdalena Żywiec, Jan Holeksa, Małgorzata Wesołowska, Janusz Szewczyk, Tomasz Zwijacz-Kozica and Paweł Kapusta

      Version of Record online: 12 NOV 2012 | DOI: 10.1111/j.1654-1103.2012.01493.x

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      Density of rowan seedlings and saplings (mean ± SD) in plots at different distances fromthe nearest rowan tree. In a subalpine forest the distribution of rowan trees was clumped. Most of them grew in young dense spruce stands. Seedlings occurred at high density up to 40 m from rowan trees. In consequence of the clumped distribution of trees and the range of seed dispersal, most of the old spruce stands were outside the range of abundant rowan regeneration.

    14. Effects of invasion by introduced versus native conifers on coastal heathland vegetation (pages 744–754)

      Heidi I. Saure, Vigdis Vandvik, Kristian Hassel and Ole R. Vetaas

      Version of Record online: 27 NOV 2012 | DOI: 10.1111/jvs.12010

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      We compared the effects of invasion by introduced Picea sitchensis and native Pinus sylvestris on threatened coastal Calluna-heathlands in western Norway. Our study showed that conifer invasion induces considerable and rapid changes in heathland vegetation, and that effects were stronger under the introduced conifer. To facilitate restoration, the spread of P. sitchensis into these landscapes should be controlled.

    15. Quantitative vegetation reconstruction from pollen analysis and historical inventory data around a Danish small forest hollow (pages 755–771)

      Mette Venås Overballe-Petersen, Anne Birgitte Nielsen and Richard H.W. Bradshaw

      Version of Record online: 16 NOV 2012 | DOI: 10.1111/jvs.12007

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      Landscape Reconstruction Algorithm-modelled vegetation showed the best match with distance-weighted inventory-based vegetation within a 200 m circle around the small hollow. Applying the model further back in time allowed reconstruction of local vegetation dynamics which are not detectable at the regional scale, such as a very early local occurrence of Fagus sylvatica around the site.

  3. Forum

    1. Top of page
    2. Commentaries
    3. Original Articles
    4. Forum
    1. You have free access to this content
      Natural, potential and actual vegetation in North America (pages 772–776)

      Stephen T. Jackson

      Version of Record online: 29 OCT 2012 | DOI: 10.1111/jvs.12004

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      Potential natural vegetation (PNV) has been widely applied, but often controversially. Paleoecological and historical studies reveal that actual natural vegetation often displays inertia, contingency, and hysteresis, most frequently owing to multiscale climatic variability and episodic disturbance and recruitment. PNV is an artificial and often useful construct, although with diminishing utility in a rapidly changing world.