TY - JOUR A1 - Tischew, Sabine A1 - Dierschke, Hartmut A1 - Schwabe, Angelika A1 - Garve, Eckhard A1 - Heinken, Thilo A1 - Holzel, Norbert A1 - Bergmeier, Erwin A1 - Remy, Dominique A1 - Haerdtle, Werner T1 - Pflanzengesellschaft des Jahres 2019: Die Glatthaferwiese T1 - Plant Community of the Year 2019: Oatgras Meadow JF - Tuexenia : Mitteilungen der Floristisch-Soziologischen Arbeitsgemeinschaft N2 - Um Themen des Schutzes von Pflanzengemeinschaften wirksamer in der breiten Öffentlichkeit zu kommunizieren wird der Vorstand der „Floristisch-Soziologischen Arbeitsgemeinschaft (FlorSoz)“ ab 2019 eine „Pflanzengesellschaft des Jahres“ ausrufen. Damit sollen politische und administrative Entscheidungs- und Umsetzungsprozesse zur Erhaltung der Vielfalt von Ökosystemen und Pflanzengesellschaften in Deutschlands gezielt unterstützt werden. Für das Jahr 2019 wurde die Glatthaferwiese ausgewählt. Sie zählt aktuell zu den durch Artenverarmung und Flächenrückgang besonders bedrohten Pflanzengesellschaften Deutschlands. Es sind deshalb dringend Maßnahmen zum Schutz und zur Wiederherstellung notwendig. Dieser Artikel gibt einen kurzen Überblick zur naturschutzfachlichen Bedeutung von Glatthaferwiesen und deren Ökosystemleistungen sowie zur floristisch-soziologischen Erforschung, zu Ursachen ihres Rückgangs und zu geeigneten Gegenmaßnahmen. N2 - Aiming at a better promotion of topics related to the conservation of ecosystems and plant communities, the board of the Floristisch-Soziologische Arbeitsgemeinschaft (FlorSoz)" has launched the initiative to announce a "Plant Community of the Year". Therewith we hope to raise awareness and stimulate civil society and politics in promoting more efficient conservation strategies. For the forthcoming year, we choose the oatgras meadow as Plant Community of the Year 2019. These lowland hay meadows belong to the most threatened plant communities in Germany. Concepts and schemes aiming at the conservation and restoration of lowland hay meadows are urgently needed. This article provides a short overview of the high nature-conservation value of lowland hay meadows and their ecosystem services as well as of the floristic-phytosociological research, reasons for their sharp decline and appropriate countermeasures. Y1 - 2018 U6 - https://doi.org/10.14471/2018.38.011 SN - 0722-494X IS - 38 SP - 287 EP - 295 PB - Floristisch-Soziologische Arbeitsgemeinschaft CY - Göttingen ER - TY - JOUR A1 - Maes, Sybryn L. A1 - Blondeel, Haben A1 - Perring, Michael P. A1 - Depauw, Leen A1 - Brumelis, Guntis A1 - Brunet, Jörg A1 - Decocq, Guillaume A1 - den Ouden, Jan A1 - Haerdtle, Werner A1 - Hedl, Radim A1 - Heinken, Thilo A1 - Heinrichs, Steffi A1 - Jaroszewicz, Bogdan A1 - Kirby, Keith J. A1 - Kopecky, Martin A1 - Malis, Frantisek A1 - Wulf, Monika A1 - Verheyen, Kris T1 - Litter quality, land-use history, and nitrogen deposition effects on topsoil conditions across European temperate deciduous forests JF - Forest ecology and management N2 - Topsoil conditions in temperate forests are influenced by several soil-forming factors, such as canopy composition (e.g. through litter quality), land-use history, atmospheric deposition, and the parent material. Many studies have evaluated the effects of single factors on physicochemical topsoil conditions, but few have assessed the simultaneous effects of multiple drivers. Here, we evaluate the combined effects of litter quality, land-use history (past land cover as well as past forest management), and atmospheric deposition on several physicochemical topsoil conditions of European temperate deciduous forest soils: bulk density, proportion of exchangeable base cations, carbon/nitrogen-ratio (C/N), litter mass, bio-available and total phosphorus, pH(KCI)and soil organic matter. We collected mineral soil and litter layer samples, and measured site characteristics for 190 20 x 20 m European mixed forest plots across gradients of litter quality (derived from the canopy species composition) and atmospheric deposition, and for different categories of past land cover and past forest management. We accounted for the effects of parent material on topsoil conditions by clustering our plots into three soil type groups based on texture and carbonate concentration. We found that litter quality was a stronger driver of topsoil conditions compared to land-use history or atmospheric deposition, while the soil type also affected several topsoil conditions here. Plots with higher litter quality had soils with a higher proportion of exchangeable base cations, and total phosphorus, and lower C/N-ratios and litter mass. Furthermore, the observed litter quality effects on the topsoil were independent from the regional nitrogen deposition or the soil type, although the soil type likely (co)-determined canopy composition and thus litter quality to some extent in the investigated plots. Litter quality effects on topsoil phosphorus concentrations did interact with past land cover, highlighting the need to consider land-use history when evaluating canopy effects on soil conditions. We conclude that forest managers can use the canopy composition as an important tool for influencing topsoil conditions, although soil type remains an important factor to consider. KW - Soil fertility KW - Ancient forest KW - Post-agricultural forest KW - Coppice KW - High forest KW - pH KW - Phosphorus KW - Base cations KW - Nutrient cycling KW - Decomposition Y1 - 2019 U6 - https://doi.org/10.1016/j.foreco.2018.10.056 SN - 0378-1127 SN - 1872-7042 VL - 433 SP - 405 EP - 418 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Krause, Rolf Harald A1 - Buse, Joern A1 - Matern, Andrea A1 - Schroeder, Boris A1 - Haerdtle, Werner A1 - Assmann, Thorsten T1 - Eresus kollari (Araneae: Eresidae) calls for heathland management JF - The Journal of arachnology N2 - Northwest Europe's largest heather-dominated sandy habitats are located in the nature reserve Luneburger Heide, Germany. Yet, even these appear to be losing their ability to support some of their stenotopic species such as the ladybird spider, Eresus kollari Rossi 1846, and are thus becoming increasingly important for the preservation of these species. The habitat requirements of this endangered spider species were investigated in order to obtain data that will help stabilize the last remnants of the species' population in northwest Germany. Several heathland habitats were surveyed by pitfall trapping during the mate-search period of the males. Two statistical methods were applied: logistic regression and boosted regression trees (BRT). Both methods showed that three habitat variables are of prime relevance in predicting the occurrence of E. kollari: a) thickness of the organic layer (a negative effect), b) soil temperature at a depth of 10 cm, and c) Calluna cover in the herb layer (both have positive effect). Our results show that choppering (removing above-ground biomass and most of O-layer) and burning are likely appropriate heathland management measures for the conservation of E. kollari. Such measures improve the species' habitat quality by creating a heterogenic (small-scaled) heathland structure with suitable microhabitats. As Calluna heathlands show a clear senescence of the dominant heather, it is essential that those habitat patches be conserved. Further measures, such as transfer experiments, are recommended. KW - Conservation management KW - habitat modeling KW - action plan KW - choppering KW - burning Y1 - 2011 SN - 0161-8202 SN - 1937-2396 VL - 39 IS - 3 SP - 384 EP - 392 PB - American Arachnological Society CY - College Park ER -