2,485 research outputs found
Matthias Wagner : author profile
No full textThe author presented on this page has published his 10. article in Angewandte Chemie in the last 10 years
River dynamics shape clonal diversity and genetic structure of an Amazonian understorey herb
No full text1. Clonal herbs are an important feature of the understorey of Amazonian forests. However, little is known about the environmental drivers determining the population genetics of these herbs and about the spatial scale of gene flow. 2. With amplified fragment length polymorphism markers, we analysed the clonal diversity and genetic structure of a clonal Amazonian herb (Heliconia metallica) in south-eastern Peru at two spatial scales. First, we sampled leaves in 24 patches differing in flooding frequency and canopy openness in 2 km(2) of a floodplain forest, and second in 21 riverine populations from the Andean foothills to the Amazon lowlands along a 550-km stretch of river. 3. At the small spatial scale in the floodplain forest, the clonal diversity of H. metallica was higher at flooded than at non-flooded sites, but clonal diversity did not increase with canopy openness. 4. At the large spatial scale, clonal diversity was very low in riverine populations at up- and downriver sites, suggesting that seedling recruitment was higher at mid-altitudes where the flooding intensity is intermediate. Genetic diversity of riverine populations monotonously increased downriver, indicating unidirectional gene flow mediated by hydrochory. 5. Genetic differentiation among riverine populations was very low (F-ST = 0.06) and followed an isolation-by-distance pattern, indicating a stepping-stone type of gene flow by seeds. Despite the much smaller spatial scale, genetic differentiation among patches in the floodplain forest was higher (F-ST = 0.16), due to spatially restricted gene flow in the forest understorey. 6. Synthesis. The genetic structure of H. metallica is the result of seedling recruitment being largely limited to flooded sites and of hydrochoric seed dispersal between populations growing on river-banks. We conclude that river dynamics are the major determinant of the genetic structure of Amazonian plants and that largely undisturbed river systems, such as the Amazon, provide a crucial vector for gene flow, even at large spatial scales.German Academic Exchange Service; German National Academic Foundatio
Enduring Ambiguity: What Is European Literature? Matthias Nawrat in Conversation with Monika Woltig
No full textMatthias Nawrat is a Polish-German author living in Germany born in Opole, Poland. He moved with his family to Bamberg in 1989. He was awarded the Adelbert-von-ChamissoFörderpreis, was nominated for the Deutscher Buchpreis, received the Bremen Literature Prize and the Alfred Döblin Medaille. His most important novels were "Wir zwei allein" (2012), "Die vielen Tode unseres Opas Jurek" (2015), and "Der traurige Gast" (2019).Matthias Nawrat to niemiecki autor polskiego pochodzenia. Matthias Nawrat urodził się w Opolu i wraz z rodziną przeprowadził się w 1989 roku do Bambergu. Uzyskał Nagrodę im. Adelberta von Chamisso (Förderpreis), był nominowany do Niemieckiej Nagrody Książkowej (Deutscher Buchpreis), otrzymał Nagrodę Literacką miasta Bremy i Medal im. Alfreda Döblina. Najważniejsze teksty: "Wir zwei allein" (2012), "Die vielen Tode unseres Opas Jurek" (2015), "Der traurige Gast" (2019).Matthias Nawrat ist ein deutscher Autor polnischer Herkunft. Matthias Nawrat wurde im polnischen Opole geboren und siedelte 1989 mit seiner Familie nach Bamberg über. Er wurde mit dem Adelbert-von-Chamisso-Förderpreis ausgezeichnet, zum Deutschen Buchpreis nominiert und erhielt den Bremer Literaturpreis sowie die Alfred-Döblin-Medaille. Die wichtigsten Texte: "Wir zwei allein" (2012), "Die vielen Tode unseres Opas Jurek" (2015), "Der traurige Gast" (2019)
Baculus Militaris Compendiosus Infanterie Oder Officirers Stab Das ist Ein kurtzer Begrieff der Kriegs Lectionen bey dem Fußvolck gebräuchlich auch nötig : Bestehend in sechserley Exercitien 1. In der Partisan, halber Pique oder Jägerstock. 2. In der Fahn. 3. In der Pique. 4. In der Musqueten. 5. In der Musqueten mit der gabel oben und unten mit einer eiserner spitzen und in der mitten mit einem ein geschrobenen hacken. 6. In Hieb degen/ welcher bey dem fußvolck brauchlich / [Matthias Schlüter]
No full textJohn Matthias
No full textPoster promoting author John Matthias reading from his work in the Auditorium, Building 9, University of North Florida.
Poster dimensions: 26.7 cm x 41.8 cmhttps://digitalcommons.unf.edu/performances_print/1013/thumbnail.jp
Improved estimation of gut passage time considerably affects trait‐based dispersal models
No full text1. Animals are important vectors for transporting seeds, nutrients and microbes across landscapes. However, models that quantify the magnitude of these ecosystem services across a broad range of taxa often rely on generalised mass-based scaling parameters for gut passage time. This relationship is weak and fundamentally breaks down when considering individual species, indicating that current models may incorrectly attribute or estimate the magnitude of dispersal.
2. We collated a large dataset of gut passage time for endothermic animals measured using undigested markers (n = 391 species). For each species, we compiled trait data, including body mass, morphology, gut physiology, diet and phylogeny. We then compared the ability of five statistical models (constant, generalised least squares, phylogenetic generalised least squares, general linear model and random forest) to estimate the time of first marker appearance (transit time; TT) and mean marker retention time (MRT) for particle and solute markers in mammals and birds separately.
3. For mammals, we found that the inclusion of additional traits appreciably reduced the median root-mean
squared error across all markers in a leave-one-out cross validation. For birds, however, additional traits did not significantly improve our ability to predict gut passage time across markers. This may have occurred due to the smaller number of bird species included in our analysis or the absence of important explanatory factors such as differences in gastrointestinal morphology.
4. Using the MRTparticle random forest model from this study, we updated two trait-based dispersal models for seed and nutrient movement by mammals. The magnitude of dispersal in our updated predictions ranged from 66% to 176% of the original model formulation for different scenarios, highlighting the importance of gut passage time for dispersal models. Furthermore, the contribution by individual or groups of species was found sizeably altered in our updated models.
5. Future modelling studies of dispersal by mammals, for which empirical estimates of gut passage time are absent, will benefit from predicting gut passage time using statistical models that incorporate traits including animal morphology, diet and gut physiology
Anpassen oder aussterben: Artenvielfalt im Klimawandel : wie Pflanzen und Tiere aufeinander angewiesen sind
No full textHeute sterben zehn- bis hundertmal mehr Arten aus, als dies ohne die massiven Einflüsse des Menschen auf das System »Erde«der Fall wäre. Der Artenforscher Matthias Schleuning untersucht, wie Pflanzen und Tiere in komplexen Ökosystemen voneinander abhängen. Damit kann er voraussagen, wer zu den Gewinnern und den Verlierern von Klimawandel und stärkerer Landnutzung werden wird
Patristical Ideas in the Works of Matthias of Janov
No full textANGLICKÁ ANOTACE Title: Patristical ideas in the works of Matthias of Janov The thesis treats of the identification of ideas of church fathers in the work and thinking of Matthias of Janov. The thesis consits of three main parts. First part deals with Matthias of Janov in broader context of church tradition. Major political and theological developments that could have an impact on Matthias theological work are presented in this section. Second part introduces life of Matthias of Janov and identifies his major theological contributions. In the third part of the thesis, following explanation of methodology used, the findings of the author are presented. Three areas were selected by the author and researched in view of the identification of possible influance of church fathers in the Matthias of Janov work: the idea of Antichrist, frequent eucharisty and condemnation of idolatry. The findings confirm a strong influance of Augustin and Hieronymus in particular and other early church fathers on the formation of the theology of Matthias of Janov in all three areas of the study. It was also noticed that through the church fathers Matthias of Janov was strongly influenced by neoplatonism which was documented on his idea of "The First Thruth" Key words: Matthias of Janov, church fathers, antichrist, eucharisty,..
Growth form and fruit and flower numbers of plants on Kilimanjaro
No full textThis dataset includes the identities of all fruiting and flowering plants on all study sites sampled for mutualistic interactions (i.e. all except for Hel and Fer). We identified plants to species level, and recorded some general information on size and growth form (e.g. tree, shrub, liana). Additonally, we counted the number of fruits and flowers on each plant individual to estimate crop size
Elevation-dependent effects of forest fragmentation on plant-bird interaction networks in the tropical Andes
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