This dataset documents vascular plant diversity recorded on grassland sites in Germany. Vegetation surveys combined (i) a full inventory within one 2 m × 2 m quadrat per 50 m × 5 m sub-transect, where species cover was estimated, and (ii) an additional 30-minute search for further species across the entire 5 m × 200 m transect, recorded as presence only. Cover was assessed using an adapted Braun-Blanquet ordinal scale with predefined percentage ranges; mean cover per species was derived from the midpoint of the assigned range. Because vegetation layers may overlap, summed covers can exceed 100%. Species were identified in the field; records marked "cf." indicate uncertain species-level determination. Plant nomenclature follows the German standard list, supporting harmonized taxonomic reporting. The dataset includes sub-transect dimensions, survey method, observation area, scientific names, cover class, associated percentage ranges, derived mean cover, and taxonomic uncertainty flags. Data were collected at multiple restored and reference grassland sites across Northern, Central, and Southern Germany in 2022 and 2023, with site coordinates reported at two-decimal precision (blurred for privacy).
Data on plant communities (biomass and relative cover of all target species), plant traits (41 different traits, measured on 59 species), and 42 ecosystem properties/functions, measured between 2003 and 2012 in the Jena Main Biodiversity experiment. In floodplain grasslands of the Saale river, near Jena (Germany) 78 20x20 m grassland plots were set up, in which combinations of 1, 2, 4, 8 or 16 species were sown, from a species pool of 60. Thereby, the aim was to create a gradient in plant species richness and functional composition. In each year from 2003-2012, relative cover (in %) of each target species was estimated within 3x3 m subplots. In addition, plant biomass was measured in both spring and summer. In addition, we compiled trait data for 59 of the 60 sown species, based on a combination of existing literature, pot experiments and measurements in the Jena Main Biodiversity experiment monoculture (1-species) plots. Data on 41 traits was collected. Finally, we measured in 41 different ecosystem functions in the Jena Main Biodiversity experiment. Each ecosystem function was measured in at least 3 different years between 2003 and 2012. The "R2.model.random.text[x]" (where x is a number from 1 to 40) are secondary data files, and the outcome of statistical models. In these, 100 times a random subset of 1 to 40 (out of the 41) plant traits were analysed as predictors of the 42 ecosystem functions, in order to assess how the proportion of variance in ecosystem functioning explained by traits (R2 values) depends on the number of traits analysed.
Es wird die taxonomische Revision kritischer Gattungen der cyanobakteriellen Flechtenfamilie Lichnaceae (Lichinales, lichenisierte Ascomycetes) angestrebt. Dazu sollen auch Fragen zur Stammesgeschichte und Phylogeographie der Gattungen und ihrer Arten geklärt werden. Die Gattungen Lichinella (inkl. Gonohymenia), Peccania und Pterygiopsis gehören zu den artenreichsten der Lichinaceae. Die Sippen weisen in den Trockengebieten der Erde eine hohe Artenvielfalt auf. Lokal können sie in kryptogamenreichen Habitaten beträchtlichen Anteil an der Phytodiversität haben. Das trifft auch auf die Wüstengebiete im Südwesten der USA und im nördlichen Mexiko zu. Die rezenten Verbreitungsmuster von Arten der Lichinaceae im Gebiet sind jedoch sehr verschieden. Neben Neoendomiten kommen auch Sippen mit weltweiter, aber oft disjunkter Verbreitung vor. Letztere sind offenbar Plaeoendemiten. Die Daten sind jedoch sehr lückenhaft, was auf die gesamte Familie zutrifft. Hinzu kommen noch unbeschriebene Taxa sowohl aus Südwest Nordamerika als auch aus anderen Verbreitungszentren wie dem Nahen und Mittleren Osten. Es soll daher eine geographisch abgegrenzte Revision kritischer Sippen mit der Frage nach deren evolutiver Entfaltung weltweit verbunden zu werden.
The present-day configuration of Indonesia and SE Asia is the results of a long history of tectonic movements, volcanisms and global eustatic sea-level changes. Not indifferent to these dynamics, fauna and flora have been evolving and dispersing following a complicate pattern of continent-sea changes to form what are today defined as Sundaland and Wallacea biogeographical regions. The modern intraannual climate of Indonesia is generally described as tropical, seasonally wet with seasonal reversals of prevailing low-level winds (Asian-Australian monsoon). However at the interannual scale a range of influences operating over varying time scales affect the local climate in respect of temporal and spatial distribution of rainfall. Vegetation generally reflects climate and to simplify it is possible to distinguish three main ecological elements in the flora of Malaysia: everwet tropical, seasonally dry tropical (monsoon) and montane. Within those major ecological groups, a wide range of specific local conditions caused a complex biogeography which has and still attract the attention of botanists and biogeographers worldwide. Being one of the richest regions in the Worlds in terms of species endemism and biodiversity, Indonesia has recently gone through intensive transformation of previously rural/natural lands for intensive agriculture (oil palm, rubber, cocoa plantations and rice fields). Climate change represents an additional stress. Projected climate changes in the region include strengthening of monsoon circulation and increase in the frequency and magnitude of extreme rainfall and drought events. The ecological consequences of these scenarios are hard to predict. Within the context of sustainable management of conservation areas and agro-landscapes, Holocene palaeoecological and palynological studies provide a valuable contribution by showing how the natural vegetation present at the location has changed as a consequence of climate variability in the long-term (e.g. the Mid-Holocene moisture maximum, the modern ENSO onset, Little Ice Age etc.). The final aim of my PhD research is to compare the Holocene history of Jambi province and Central Sulawesi. In particular: - Reconstructing past vegetation, plant diversity and climate dynamics in the two study areas Jambi (Sumatra) and Lore Lindu National Park (Sulawesi) - Comparing the ecological responses of lowland monsoon swampy rainforest (Sumatra) and everwet montane rainforests (Sulawesi) to environmental variability (vulnerability/resilience) - Investigating the history of human impact on the landscape (shifting cultivation, slash and burn, crop cultivation, rubber and palm oil plantation) - Assessing the impact and role of droughts (El Niño) and fires - Adding a historical perspective to the evaluation of current and future changes.
Das ist eine senseBox der Humboldt Explorers. Weitere Informationen unter: www.humboldt-explorers.de
Das ist eine senseBox der Humboldt Explorers. Weitere Informationen unter: www.humboldt-explorers.de
Das ist eine senseBox der Humboldt Explorers. Weitere Informationen unter: www.humboldt-explorers.de
Das ist eine senseBox der Humboldt Explorers. Weitere Informationen unter: www.humboldt-explorers.de
Das ist eine senseBox der Humboldt Explorers. Weitere Informationen unter: www.humboldt-explorers.de
Das ist eine senseBox der Humboldt Explorers. Weitere Informationen unter: www.humboldt-explorers.de
| Organisation | Count |
|---|---|
| Bund | 184 |
| Europa | 11 |
| Kommune | 1 |
| Land | 21 |
| Weitere | 10 |
| Wissenschaft | 121 |
| Zivilgesellschaft | 270 |
| Type | Count |
|---|---|
| Daten und Messstellen | 290 |
| Ereignis | 13 |
| Förderprogramm | 168 |
| Text | 20 |
| Umweltprüfung | 1 |
| unbekannt | 2 |
| License | Count |
|---|---|
| Geschlossen | 22 |
| Offen | 471 |
| Unbekannt | 1 |
| Language | Count |
|---|---|
| Deutsch | 411 |
| Englisch | 123 |
| Resource type | Count |
|---|---|
| Archiv | 10 |
| Bild | 1 |
| Datei | 31 |
| Dokument | 13 |
| Keine | 105 |
| Unbekannt | 1 |
| Webseite | 356 |
| Topic | Count |
|---|---|
| Boden | 437 |
| Lebewesen und Lebensräume | 494 |
| Luft | 376 |
| Mensch und Umwelt | 494 |
| Wasser | 360 |
| Weitere | 479 |