Tag: vegetation

EIVE 1.0 – The largest system of ecological indicator values in Europe

EIVE 1.0 is the most comprehensive system of ecological indicator values of vascular plants in Europe to date. It can be used as an important tool for continental-scale analyses of vegetation and floristic data.

Guest blog post by Jürgen Dengler, Florian Jansen & François Gillet

Geographic coverage of the 31 ecological indicator value systems that entered the calculation of the consensus system of EIVE 1.0 (image from the original article).

It took seven years and hundreds of hours of work by an international team of 34 authors to develop and publish the most comprehensive system of ecological indicator values (EIVs) of vascular plants in Europe to date.

EIVE 1.0 is now available as an open access database and described in the accompanying paper (Dengler et al. 2023).

EIVE 1.0 provides the five most-used ecological indicators, M – moisture, N – nitrogen, R – reaction, L – light and T – temperature, for a total of 14,835 vascular plant taxa in Europe, or between 13,748 and 14,714 for the individual indicators. For each of these taxa, EIVE contains three values: the EIVE niche position indicator, the EIVE niche width indicator and the number of regional EIV systems on which the assessment was based. Both niche position and niche width are given on a continuous scale from 0 to 10, not as categorical ordinal values as in the source systems.

Evidently, EIVE can be an important tool for continental-scale analyses of vegetation and floristic data in Europe.

It will allow to analyse the nearly 2 million vegetation plots currently contained in the European Vegetation Archive (EVA; Chytrý et al. 2016) in new ways.

Since EVA apart from elevation, slope inclination and aspect hardly contains any in situ measured environmental variables, the numerous macroecological studies up to date had to rely on coarse modelled environmental data (e.g. climate) instead. This is particularly problematic for soil variables such as pH, moisture or nutrients, which can change dramatically within a few metres.

Here, the approximation of site conditions by mean ecological indicator values can improve the predictive power substantially (Scherrer and Guisan 2019). Likewise, in broad-scale vegetation classification studies, mean EIVE values per plot would allow a better characterisation of the distinguished vegetation units. Lastly, one should not forget that most countries in Europe do not have a national EIV system, and here EIVE could fill the gap.

Violin plots showing largely continuous value distributions of the niche position and niche width values of the five indicators in EIVE 1.0 (image from the original article).

Almost on the same day as EIVE 1.0 another supranational system of ecological indicator values in Europe has been published by Tichý et al. (2023) with a similar approach.

Thus, it will be important for vegetation scientists in Europe to understand the pros and cons of both systems to allow the wise selection of the most appropriate tool:

  • EIVE 1.0 is based on 31 regional EIV systems, while Tichý et al. (2023) uses 12.
  • Both systems provide indicator values for moisture, nitrogen/nutrients, reaction, light and temperature, while Tichý et al. (2023) additionally has a salinity indicator.
  • Tichý et al. (2023) aimed at using the same scales as Ellenberg et al. (1991), which means that the scales vary between indicators (1–9, 0–9, 1–12), while EIVE has a uniform interval scale of 0–10 for all indicators.
  • Only EIVE provides niche width in addition to niche position. Niche width is an important aspect of the niche and might be used to improve the calculation of mean indicator values per plot (e.g. by weighting with inverse niche width).
  • The taxonomic coverage is larger in EIVE than in Tichý et al. (2023): 14,835 vs. 8,908 accepted taxa and 11,148 vs. 8,679 species.
  • EIVE provides indicator values for accepted subspecies, while Tichý et al. (2023) is restricted to species and aggregates. Separate indicator values for subspecies might be important for two reasons: (a) subspecies often strongly differ in at least one niche dimension; (b) many of the taxa now considered as subspecies have been treated at species level in the regional EIV systems.
  • Tichý et al. (2023) added 431 species not contained in any of the source systems based on vegetation-plot data from the European Vegetation Archive (EVA; Chytrý et al. 2016) while EIVE calculated the European indicator values only for taxa occurring at least in one source system. 
  • While both systems present maps that suggest a good coverage across Europe, Tichý et al. (2023)’s source systems largely were from Central Europe, NW Europe and Italy, but, unlike EIVE, these authors did not use source systems from the more “distal” parts of Europe, such as Sweden, Faroe Islands, Russia, Georgia, Romania, Poland and Spain, and they used only a small subset of indicators of the EIV systems of Ukraine, Greece and the Alps.
  • In a validation with GBIF-derived data on temperature niches, Dengler et al. (2023) showed that EIVE has a slightly stronger correlation than Tichý et al. (2023)’s indicators (r = 0.886 vs. 0.852).
The correlation of EIVE-T values of species with GBIF-derived temperature niche data was high and even higher when restricting the calculation to those species whose consensus value was based on at least four sources (image from the original article).

How did EIVE manage to integrate all EIV systems in Europe that contained at least one of the selected indicators for vascular plants, while Tichý et al. (2023) used only a small subset?

This difference is mainly due to a more complex workflow in EIVE (which also was one of the reasons why the preparation took so long). First, Tichý et al. (2023) restricted their search to EIV systems and indicators that had the same number of categories as the “original” Ellenberg system.

Second, from these they discarded those that showed a too low correlation with Ellenberg. By contrast, EIVE’s workflow allowed the use of any system with an ordinal (or even metric) scale, irrespective of the number of categories or the initial match with Ellenberg et al. (1991).

EIVE also did not treat one system (Ellenberg) as the master to assess all others but considered each of them equally valid. While indeed the individual EIV systems are often quite inconsistent, i.e. even if they refer to Ellenberg, the same value of an indicator in one system might mean something different in another system, our iterative linear optimisation enabled us to adjust all 31 systems for the five indicators to a common basis.

This in turn allowed deriving EIVE as the consensus system of all the source systems. The fact that in our validation of the temperature indicator, EIVE performed better than Tichý et al. (2023) and much better than most of the regional EIV systems might be attributable to the so-called “wisdom of the crowd”, going back to the statistician Francis Galton who found that averaging numerous independent assessments (even by laymen) of a continuous quantity can leads to very good estimates of the true value. 

Apart from the indicator values themselves, EIVE has a second main feature that might not be so obvious at first glance, but which actually took the EIVE team, including several taxonomists, more time than the workflow to generate the indicator values themselves: the taxonomic backbone. EIVE for vascular plants is fully based on the taxonomic concept (including the synonymic relationships) of the Euro+Med Plantbase.

However, since Euro+Med lacks an important part of taxa that are frequently recorded in vegetation plots, to make our backbone fully usable to vegetation science, we expanded it beyond Euro+Med to something called “Euro+Med augmented”. We particularly added hybrids, neophytes and aggregates, three groups of plants hitherto only very marginally covered in Euro+Med. All additions were done by experts consistently with the taxonomic concept of Euro+Med and are fully documented. Likewise, many additional synonym relationships had to be added that were missing in Euro+Med.

Finally, we implemented the so-called “concept synonymy” (see Jansen and Dengler 2010), which allows the assignment of the same name from different sources to different accepted names (“taxonomic concepts”). This applies mainly to nested taxa that are treated at different levels in different sources, e.g. once as species with several subspecies, once as aggregate with several species. However, there are also some cases of misapplied names (i.e. names that were not used in agreement with their nomenclatural type in certain EIV systems). Such cases generally cannot be solved by the various tools for automatic taxonomic cleaning, but require experts who make a case-by-case decision.

The whole taxonomic workflow of EIVE is fully transparent with an R code that “digests”:

(a) the names as they are in the source systems,

(b) the official Euro+Med database and

(c) tables that document our additions and modifications (with reasons and references).

This comprehensive documentation will allow continuous and efficient improvement in the future, be it because of taxonomic novelties adopted in Euro+Med or because EIVE’s experts decide to change certain interpretations. That way, “Euro+Med augmented” and the accompanying R-based workflow can also be a valuable tool for other projects that wish to harmonise plant taxonomic information from various sources at a continental scale, e.g. in vegetation-plot databases such as GrassPlot (Dengler et al. 2018) and EVA (Chytrý et al. 2016).

The publication of EIVE 1.0 is not the endpoint, but rather a starting point for future developments in a community-based approach.

Together with interested colleagues from outside, the EIVE core team plans to prepare better and more comprehensive releases of EIVE in the future, including updates to its taxonomic backbone.

Future releases of EIVE will be published in fixed versions, typically together with a paper that describes the changes in the content.

As steps for the next two years, we anticipate that we will first add further taxa (bryophytes, lichens, macroalgae) and some additional indicators, both of which are relatively easy with our established R-based workflow. Then we plan EIVE 2.0 that will use the approx. 2 million vegetation plots in EVA (Chytrý et al. 2016) to re-calibrate EIVE for all taxa (see http://euroveg.org/requests/EVA-data-request-form-2022-02-10-Dengleretal.pdf).

We invite you to get into contact with us if you have:

(a) a new or overlooked indicator value system for any taxonomic group in Europe and adjacent areas (including comprehensive datasets of measured environmental data in vegetation plots);

(b) suggestions for improvements of our taxonomic backbone;

(c) a paper idea in the EIVE context that you would like to realise together with the EIVE core team (since everything is OA, you can, of course, use EIVE 1.0 for any possible purpose without notifying us as long as you cite EIVE properly).

Last but not least, any test of the validity and performance of EIVE, alone or in comparison with Tichý et al. (2023), with in situ measured environmental variables, locally or even continentally, would be most welcome.

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This Behind the paper post refers to the article Ecological Indicator Values for Europe (EIVE) 1.0 by Jürgen Dengler, Florian Jansen, Olha Chusova, Elisabeth Hüllbusch, Michael P. Nobis, Koenraad Van Meerbeek, Irena Axmanová, Hans Henrik Bruun, Milan Chytrý, Riccardo Guarino, Gerhard Karrer, Karlien Moeys, Thomas Raus, Manuel J. Steinbauer, Lubomir Tichý, Torbjörn Tyler, Ketevan Batsatsashvili, Claudia Bita-Nicolae, Yakiv Didukh, Martin Diekmann, Thorsten Englisch, Eduardo Fernandez Pascual, Dieter Frank, Ulrich Graf, Michal Hájek, Sven D. Jelaska, Borja Jiménez-Alfaro, Philippe Julve, George Nakhutsrishvili, Wim A. Ozinga, Eszter-Karolina Ruprecht, Urban Šilc, Jean-Paul Theurillat, and François Gillet published in Vegetation Classification and Survey (https://doi.org/10.3897/VCS.98324).

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Follow the Vegetation Classification and Survey journal on Facebook and Twitter.

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Brief personal summaries: 

Jürgen Dengler is a Professor of Vegetation Ecology at the Zurich University of Applied Science (ZHAW) in Wädenswil, Switzerland. Among others, he cofounded the European Vegetation Database (EVA), the global vegetation-plot database “sPlot” and the “GrassPlot” database of the Eurasian Dry Grassland Group. His major research interests are grassland ecology, grassland conservation, biodiversity patterns, macroecology, vegetation change, broad-scale vegetation classification, methodological developments in vegetation ecology and ecoinformatics.

Florian Jansen is a Professor of Landscape Ecology at the University of Rostock, Germany. His research interests are vegetation ecology and dynamics, mire ecology including greenhouse gas emissions, and numerical ecology with R. He (co-)founded the German Vegetation Database vegetweb.de, the European Vegetation Database (EVA), and the global vegetation-plot database “sPlot”. He wrote the R package eHOF for modelling species response curves along one-dimensional ecological gradients.

François Gillet is an Emeritus Professor of Community Ecology at the University of Franche-Comté in Besançon, France. His major research interests are vegetation diversity, ecology and dynamics, grassland and forest ecology, integrated synusial phytosociology, numerical ecology with R, dynamic modelling of social-ecological systems.

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References: 

Chytrý, M., Hennekens, S.M., Jiménez-Alfaro, B., Knollová, I., Dengler, J., Jansen, F., Landucci, F., Schaminée, J.H.J., Aćić, S., (…) & Yamalov, S. 2016. European Vegetation Archive (EVA): an integrated database of European vegetation plots. Applied Vegetation Science 19: 173–180.

Dengler J, Wagner V, Dembicz I, García-Mijangos I, Naqinezhad A, Boch S, Chiarucci A, Conradi T, Filibeck G, … Biurrun I (2018) GrassPlot – a database of multi-scale plant diversity in Palaearctic grasslands. Phytocoenologia 48: 331–347.

Dengler, J., Jansen, F., Chusova, O., Hüllbusch, E., Nobis, M.P., Van Meerbeek, K., Axmanová, I., Bruun, H.H., Chytrý, M., (…) & Gillet, F. 2023. Ecological Indicator Values for Europe (EIVE) 1.0. Vegetation Classification and Survey 4: 7–29.

Ellenberg H, Weber HE, Düll R, Wirth V, Werner W, Paulißen D (1991) Zeigerwerte von Pflanzen in Mitteleuropa. Scripta Geobotanica 18: 1–248.

Jansen F, Dengler J (2010) Plant names in vegetation databases – a neglected source of bias. Journal of Vegetation Science 21: 1179–1186.

Midolo, G., Herben, T., Axmanová, I., Marcenò, C., Pätsch, R., Bruelheide, H., Karger, D.N., Acic, S., Bergamini, A., Bergmeier, E., Biurrun, I., Bonari, G., Carni, A., Chiarucci. A., De Sanctis, M., Demina, O., (…), Dengler, J., (…) & Chytrý, M. 2023. Disturbance indicator values for European plants. Global Ecology and Biogeography 32: 24–34.

Scherrer D, Guisan A (2019) Ecological indicator values reveal missing predictors of species distributions. Scientific Reports 9: Article 3061.

Tichý, L, Axmanová, I., Dengler, J., Guarino, R., Jansen, F., Midolo, G., Nobis, M.P., Van Meerbeek, K., Aćić, S., (…) & Chytrý, M. 2023. Ellenberg-type indicator values for European vascular plant species. Journal of Vegetation Science 34: e13168.

Standardised expert system method for Navarre grasslands classification based on diagnostic species

Guest blog post by Itziar García-Mijangos

Grasslands represent some of the largest and most diverse biomes of the world, yet they remain undervalued and under-researched. Extending in all continents except Antarctica, they host thousands of habitat specialist endemic species, support agricultural production, people’s livelihoods based on traditional and indigenous lifestyles, and several other ecosystem services such as pollination and water regulation.

Calamintho acini-Seselietum montani in Munarriz (south of Andia Range)

Palaearctic grasslands represent the richest habitats for vascular plants at small spatial scales but are seriously threatened due to land use change. European grasslands experienced two extreme ends of the land-use gradient, intensification of land use on productive lands and abandonment of marginal lands, and both resulted in the loss of grassland biodiversity. It is necessary to understand their biodiversity patterns and how they relate to land use to be able to design conservation and management actions. This understanding requires the harmonization and standardization of grassland classification that leads to a consistent syntaxonomy at the European level and can increase the usefulness of vegetation typologies for conservation and management.

We provide important insights to grasslands, with special focus on dry grasslands, from the western part of Europe (Navarre region, Spain), which constitutes a new step on the pan-European grassland classification. For this purpose, we used 958 relevés distributed across all the region and grassland types, 119 containing also information on bryophytes and lichens. The data used are available in EVA and GrassPlot databases.

The five phytosociological classes most represented in Navarre are distributed according to elevation, climate, soil and topographic variables. The class Lygeo-Stipetea develops in the most Mediterranean areas. On the other hand, the classes Nardetea and Elyno-Seslerietea develop at the highest elevations, linked to the highest annual precipitation and are distributed in the northern areas. Regarding soil, topographic and structural variables the class Nardetea presents the highest soil depth and is also the most acidophilous one. The class Elyno-Seslerietea is characterised by a higher cover of stones and rocks as well as higher soil organic matter content, and, together with Nardetea and Molinio-Arrhenatheretea, is the poorest in soil carbonate content. Conversely, Lygeo-Stipetea stands out by its high soil carbonate content and low soil organic matter. Molinio-Arrhenatheretea stands out for its high cover of the herb layer and cryptogams.

Lygeum spartum communities in Bardenas Reales

We would like to highlight that bryophytes and lichens, contrary to past assumptions, are core elements of these grasslands and particularly the Mediterranean ones of Lygeo-Stipetea, both in terms of biodiversity and of diagnostic species.

We provide, for the first time, an electronic expert system for grasslands in Navarre, based on diagnostic species of each hierarchical phytosociological level from class to association. This expert system can be implemented in the JUICE program and allows the unanimous assignment of any new relevé by means of its species composition to one of the different categories established, which is of enormous value particularly for practitioners. We provide, also for the first time, a detailed databased characterisation and comparison of the syntaxa in terms of their environmental conditions and biodiversity.

Research article:

García-Mijangos I, Berastegi A, Biurrun I, Dembicz I, Janišová M, Kuzemko A, Vynokurov D, Ambarlı D, Etayo J, Filibeck G, Jandt U, Natcheva R, Yildiz O, Dengler J (2021) Grasslands of Navarre (Spain), focusing on the Festuco–Brometea: classification, hierarchical expert system and characterisation. Vegetation Classification and Survey 2: 195-231. https://doi.org/10.3897/VCS/2021/69614

Guest Blog Post: Researchers split the birdcatcher trees (genus Pisonia) into three

Large Cabbage trees (Pisonia grandis) dominate the landscape of a small island in the Pacific Ocean
Photo by Jean-Yves Meyer (Délégation à la Recherche de Polynésie Française, Tahiti, French Polynesia)

Guest blog post by Marcos Caraballo

The birdcatcher trees – genus Pisonia – are infamous for trapping birds with their super-sticky seed pods that would frequently entangle the body of the ‘victim’. Left flightless, the poor feathered creatures eventually die either from starvation or fatigue, or predators. Similarly notorious are the birdcatcher trees for botanists, who have been baffled by their complicated classification for the last three centuries. 

Here’s why myself and graduate student Elson Felipe Rossetto of the Universidade Estadual de Londrina (Brazil) decided to take up the untangling of this issue with our recent taxonomic studies. You can find our research paper published in the open-access scholarly journal PhytoKeys.

Ripe fruits (anthocarps) of the Birdlime tree (Ceodes umbellifera)
Photo by Ching-I Peng [deceased]

We reestablished two genera: Ceodes and Rockia, where both had been previously merged under the name of Pisonia. Now, as a result, there are three distinct lineages of birdcatcher trees from the islands of the Pacific and Indian Oceans: Ceodes, Pisonia, and Rockia.

“Previous molecular studies on Pisonia species from around the world showed that species were clustered into three major groups, and here we assign names for each of them. With this new classification, a large number of the species known as Pisonia will be henceforth named Ceodes. This includes the Parapara (Ceodes brunoniana) and the Birdlime (Ceodes umbellifera) trees, both native to many islands, including Hawaii and New Zealand. They are commonly planted in gardens for their lush and sometimes variegated foliage, as well as their fragrant white flowers. However, the Cabbage tree (Pisonia grandis) will still be technically known as Pisonia.”

adds the study’s lead author Felipe Rossetto.
Male (staminate) showy flowers of the Birdlime tree (Ceodes umbellifera)
Photo by Joel Bradshaw (Far Outliers, Honolulu, Hawaii)

Birdcatcher trees have generated much controversy in the popular media because of their seed pods (technically called “anthocarps”) secreting a sticky substance that glues them to the feathers of seabirds or other animals for dispersal. Sometimes, though, too many seed pods can harm or kill birds, especially small ones, by weighing them down and rendering them flightless. This macabre practice has led to many controversies and local campaigns aiming to remove the trees, even illegally.

Brown noddy (Anous stolidus) covered with the sticky fruits (anthocarps) of the Cabbage tree (Pisonia grandis)
Photo by Jean-Yves Meyer (Délégation à la Recherche de Polynésie Française, Tahiti, French Polynesia)

In spite of their forbidding reputation, however, we would like to stress that birdcatcher trees have positive effects on ecosystems and are important components of vegetation, especially for small islands. Sadly, there are many endemic and already endangered species of birdcatcher trees that only exist on a few small islands, where they are effectively placed at the mercy of local people.

Many species of birdcatcher trees are large and, thereby, tolerate harsh environments like seafronts and rocky cliffs, making them prime nesting spots for seabirds. Birdcatcher trees are also ecologically curious and could be regarded as keystone species in small islands, because their soft branches can sustain many types of invertebrates; their flowers are an important food source for bees and ants; their dense leaf litter nourishes the soil; and their roots have intimate interaction with native underground fungi (mycorrhiza).

All in all, clarifying the taxonomy of the birdcatcher trees is the first step to understanding how many species exist and how they relate to each other. 

Although most people relate birdcatcher trees with beaches and coastal habitats, there are species that are only found in mountains or rainforests. For example, the species now allocated to the genus Rockia is endemic to the Hawaiian archipelago. These are small trees able to grow in dry to mesic mountain forests. Using our new classification, future studies can explore in detail the hidden diversity of these enigmatic plants, and find out how trees with high dispersal capabilities evolve into species endemic to small island ecosystems.

Cabbage trees (Pisonia grandis) are important components of the vegetation in small islands due to their massive size
Photo by Jean-Yves Meyer (Délégation à la Recherche de Polynésie Française, Tahiti, French Polynesia)

About the author:

Marcos A. Caraballo-Ortiz is a research associate at the Smithsonian Institution (Washington, D.C., United States). His research interests include plant systematics and ecology, with a focus on flora of the Caribbean Islands. Dr. Caraballo-Ortiz has experience studying the taxonomy of several groups of tropical plants, with a particular interest in neotropical Mistletoes (Loranthaceae, Santalaceae, Viscaceae) and the Four O’Clock family (Nyctaginaceae). 

For more information about his projects, visit marcoscaraballo.com.

Research paper:

Rossetto EFS, Caraballo-Ortiz MA (2020) Splitting the Pisonia birdcatcher trees: re-establishment of Ceodes and Rockia (Nyctaginaceae, Pisonieae). PhytoKeys 152: 121-136. https://doi.org/10.3897/phytokeys.152.50611


Plant Sociology renewed: Does an open access society journal about vegetation still make sense in 2020?

In a new editorial, Plant Sociology’s Editor-in-Chief Daniela Gigante and Co-editors Gianni Bacchetta, Simonetta Bagella and Daniele Viciani reflect on the current position and outlook of the official journal of the Italian Society of Vegetation Science (Società Italiana di Scienza della Vegetazione or SISV), now that it has completed its first issue since transitioning to the scientific publisher and technology provider Pensoft and ARPHA Platform earlier this year.

Homepage of the new website of Plant Sociology
(visit: https://plantsociology.arphahub.com/)

The Editorial board briefly analyses the issues around the inaccessibility to scholarly research and suitable scholarly outlets still persisting in our days that impede both readers and authors across branches of science. Naturally, they go on to focus on the situation in vegetation science, where, unfortunately, there are rather few outlets open to original research related to any aspect within vegetation science.

By telling their own experience, but also citing the stories of other similarly positioned society journals, including other journals that have moved to Pensoft’s self-developed ARPHA Platform over the past several years (e.g. Journal of Hymenoptera Research, European Science Editing, Italian Botanist, Vegetation Classification and Survey, Nota Lepidopterologica), the editors present an example how to address the challenges of securing the long-term sustainability and quality for a journal used to being run by a small editorial staff in what they refer to as a “home made” method.

Other society journals that have moved to Pensoft’s self-developed ARPHA Platform over the past several years

In this process, the SISV supported its official scholarly outlet to be published as a “gold open access” journal and ensured that the APCs are kept to a reasonable low in line with its non-profit international business model. Further discounts are available for the members of the Society.

Then, the journal management also reorganised its Editorial Board and welcomed a dedicated Social media team responsible for the increased outreach of published research in the public domain through the channels of Twitter and Facebook. 

Besides making the publications publicly available as soon as they see the light of day, the journal strongly supports other good open science practices, such as open data dissemination. In Plant Sociology, authors are urged to store their vegetation data in the Global Index of Vegetation-Plot Databases (GIVD). Additionally, the journal is integrated with the Dryad Digital Repository to make it easier for authors to publish, share and, hence, have their data re-used and cited.

The team behind Plant Sociology is perfectly aware of the fact that it is only through easy to find and access knowledge about life on Earth that the right information can reach the right decision-makers, before making the right steps towards mitigating and preventing future environmental catastrophes.

Access the article from: https://doi.org/10.3897/pls2020571/05

“A journal focusing on all aspects of natural, semi-natural and anthropic plant systems, from basic investigation to their modelisation, assessment, mapping, management, conservation and monitoring, is certainly a precious tool to detect environmental unbalances, understand processes and outline predictive scenarios that support decision makers. In this sense, we believe that more and more OA journals focused on biodiversity should find space in the academic editorial world, because only through deep knowledge of processes and functions of a complex planet, humankind can find a way to survive healthy,”

elaborate the editors.

To take the burden of technical journal management off the shoulders of Plant Sociology’s own editorial team, the journal has entrusted Pensoft to provide a user-friendly and advanced submission system, in addition to the production, online publishing and archiving of the accepted manuscripts. Thus, the editorial team is able to focus entirely on the scientific quality of the journal’s content.

“The renewal of Plant Sociology is a challenge that we have undertaken with conviction, aware of the difficulties and pitfalls that characterize the life of a scientific journal today. Entrusting the technical management of the journal to a professional company aims to improve its dissemination and attractiveness, but also to focus our efforts only on scientific content,”

explain the editors.

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About Plant Sociology:

Plant Sociology publishes articles dealing with all aspects of vegetation, from plant community to landscape level, including dynamic processes and community ecology. It favours papers focusing on plant sociology and vegetation survey for developing ecological models, vegetation interpretation, classification and mapping, environmental quality assessment, plant biodiversity management and conservation, EU Annex I habitats interpretation and monitoring, on the ground of rigorous and quantitative measures of physical and biological components. The journal is open to territorial studies at different geographic scale and accepts contributes dealing with applied research, provided they offer new methodological perspectives and a robust, updated vegetation analysis.

Find all pre-2020 issues and articles of Plant Sociology openly available on the former website.

Follow Plant Sociology on Twitter and Facebook.

Vegetation Classification and Survey (VCS), the new journal of the Int’l Association for Vegetation Science

The journal is to launch with a big editorial and several diverse, high-quality papers over the next months

In summer 2019 IAVS decided to start a new, third association-owned journal, Vegetation Classification and Survey (VCS), next to Journal of Vegetation Science (JVS) and Applied Vegetation Science (AVS).

Vegetation Classification and Survey (VCS) is an international, peer-reviewed journal of plant community ecology published on behalf of the International Association for Vegetation Science (IAVS) together with its sister journals, Journal of Vegetation Science (JVS) and Applied Vegetation Science (AVS). It is devoted to vegetation survey and classification at any organizational and spatial scale and without restriction to certain methodological approaches.

The journal publishes original papers that develop new vegetation typologies as well as applied studies that use such typologies, for example, in vegetation mapping, ecosystem modelling, nature conservation, land use management or monitoring. Particularly encouraged are methodological studies that design and compare tools for vegetation classification and mapping, such as algorithms, databases and nomenclatural principles. Papers dealing with conceptual and theoretical bases of vegetation survey and classification are also welcome. While large-scale studies are preferred, regional studies will be considered when filling important knowledge gaps or presenting new methods. VCS also contains Permanent Collections on “Ecoinformatics” and “Phytosociological Nomenclature”.

VCS is published by the innovative publisher Pensoft as a gold open access journal. Thanks to support from IAVS, we can offer particularly attractive article processing charges (APCs) for submissions during the first two years. Moreover, there are significant reductions for IAVS members, members of the Editorial Team and authors from low-income countries or with other financial constraints (learn more about APCs here).

Article submissions are welcomed at: https://vcs.pensoft.net/

Post by Jürgen Dengler, Idoia Biurrun, Florian Jansen & Wolfgang Willner, originally published on Vegetation Science Blog: Official blog ot the IAVS journals.

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Effects of soil and drainage on the savanna vegetation in the northern Brazilian Amazonia

It is a well-known fact that environmental factors such as soil texture and drainage determine to a very large degree the vegetation appearance, richness and composition at any site. However, there has been little research on how these variables influence the flora in the marvellous savannas – large open areas characterised by a complex and unique network of natural resources and life forms.

Consequently, a Brazilian research team, led by Dr. Maria Aparecida de Moura Araújo, Universidade Federal de Roraima, investigated the hydro-edaphic conditions in the savanna areas in the northern Brazilian Amazonia. Their study, complete with an openly available and ready for re-use dataset, is published in the open access Biodiversity Data Journal.  

Image 1_Annonaceae_Xylopia aromatica_treeIn the course of the Program for Biodiversity Research, managed by the Brazilian government, the scientists sampled 20 permanent plots in two savanna areas in the state of Roraima, located in the northern of the Brazilian Amazon. As a result, the team reports a total of 128 plant species classified into 34 families from three savanna habitats with different levels of hydro-edaphic restrictions.

Amongst the various factors playing a role in the soil characteristics of the area, are the tectonic events and past climatic fluctuations which have occurred in the most recent period of the Cenozoic era. Paleo, as well as modern fires are likely to be other culprits for the specific conditions.

In conclusion, the authors suggest that the most restrictive savanna habitats – the wet grasslands, represent the home to less structurally complex plants, compared to the well-drained shrubby localities.

“The present study highlights the environmental heterogeneity and the biological importance of Roraima’s savanna regarding the conservation of natural resources from the Amazon,” say the scientists.

Image 2_Convolvulaceae_Merremia aturensis_herb“In addition, it points out the need for greater investment in floristic inventories associated with greater diversification of sites, since this entire ecosystem has been rapidly modified by agribusiness.”

Licensed under a Creative Commons License (CC-BY 4.0) and available in a Darwin Core Archive DwC-A format; the complete dataset is openly available via the Global Biodiversity Information Facility (GBIF).

 

Original source:
Araújo M, Rocha A, Miranda I, Barbosa R (2017) Hydro-edaphic conditions defining richness and species composition in savanna areas of the northern Brazilian Amazonia. Biodiversity Data Journal 5: e13829. https://doi.org/10.3897/BDJ.5.e13829