Visitor weblog put up by Itziar García-Mijangos
Grasslands characterize a number of the largest and most numerous biomes of the world, but they continue to be undervalued and under-researched. Extending in all continents besides Antarctica, they host hundreds of habitat specialist endemic species, assist agricultural manufacturing, individuals’s livelihoods based mostly on conventional and indigenous existence, and a number of other different ecosystem companies akin to pollination and water regulation.
Palaearctic grasslands characterize the richest habitats for vascular vegetation at small spatial scales however are severely threatened because of land use change. European grasslands skilled two excessive ends of the land-use gradient, intensification of land use on productive lands and abandonment of marginal lands, and each resulted within the lack of grassland biodiversity. It’s vital to know their biodiversity patterns and the way they relate to land use to have the ability to design conservation and administration actions. This understanding requires the harmonization and standardization of grassland classification that results in a constant syntaxonomy on the European degree and may improve the usefulness of vegetation typologies for conservation and administration.
We present vital insights to grasslands, with particular give attention to dry grasslands, from the western a part of Europe (Navarre area, Spain), which constitutes a brand new step on the pan-European grassland classification. For this objective, we used 958 relevés distributed throughout all of the area and grassland varieties, 119 containing additionally info on bryophytes and lichens. The info used can be found in EVA and GrassPlot databases.
The 5 phytosociological lessons most represented in Navarre are distributed in line with elevation, local weather, soil and topographic variables. The category Lygeo-Stipetea develops in essentially the most Mediterranean areas. Alternatively, the lessons Nardetea and Elyno-Seslerietea develop on the highest elevations, linked to the best annual precipitation and are distributed within the northern areas. Concerning soil, topographic and structural variables the category Nardetea presents the best soil depth and can also be essentially the most acidophilous one. The category Elyno-Seslerietea is characterised by a better cowl of stones and rocks in addition to larger soil natural matter content material, and, along with Nardetea and Molinio-Arrhenatheretea, is the poorest in soil carbonate content material. Conversely, Lygeo-Stipetea stands out by its excessive soil carbonate content material and low soil natural matter. Molinio-Arrhenatheretea stands out for its excessive cowl of the herb layer and cryptogams.
We want to spotlight that bryophytes and lichens, opposite to previous assumptions, are core parts of those grasslands and notably the Mediterranean ones of Lygeo-Stipetea, each when it comes to biodiversity and of diagnostic species.
We offer, for the primary time, an digital skilled system for grasslands in Navarre, based mostly on diagnostic species of every hierarchical phytosociological degree from class to affiliation. This skilled system might be applied within the JUICE program and permits the unanimous project of any new relevé via its species composition to one of many completely different classes established, which is of huge worth notably for practitioners. We offer, additionally for the primary time, an in depth databased characterisation and comparability of the syntaxa when it comes to their environmental circumstances and biodiversity.
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), specializing in the Festuco–Brometea: classification, hierarchical skilled system and characterisation. Vegetation Classification and Survey 2: 195-231. https://doi.org/10.3897/VCS/2021/69614