Abstract Background Volatile isoprenoids (VIs), such as isoprene, monoterpenes, and sesquiterpenes, participate in various forest-atmosphere processes ranging from plant cell regulation to atmospheric particle formation. The Amazon Forest is the greatest and most diverse source of VI emissions, but the…
Artificial intelligence (AI) surpasses human accuracy in identifying ordinary objects, but it is still challenging for AI to be competitive in pollen grain identification. One reason for this gap is the extensive trait variation in pollen grains. In classical textbooks, pollen size relies on only 25–50…
Die Pflanzenphänologie, also das Eintreten saisonaler biologischer Ereignisse im Lebenszyklus einer Pflanze – beispielsweise Knospenaufbruch, Blüte, Fruchtbildung und Seneszenz – ist eng mit den herrschenden klimatischen Bedingungen verknüpft und spielt eine entscheidende Rolle im Kohlenstoff- und Nährstoffkreislauf.…
The Amazon basin contains over half of the world’s tropical forests and stores up to 200 Pg of carbon, yet increasing climate-driven stress events are shifting it from a carbon sink to a net carbon source. Plant volatile isoprenoids (i.e., isoprene, monoterpenes, and sesquiterpenes) play key roles in…
Plant community composition and phenology are key environmental indicators, but their manual assessment is laborious, subjective, and error-prone. This dissertation establishes the field of automatic plant community analysis, proposing a deep learning framework using Convolutional Neural Networks (CNNs)…
Agricultural landscapes are potentially species-rich and deliver varied ecosystem services but are increasingly under pressure due to intensified management, leading to declines in diversity. Functional plant traits represent the interface between plant and environment and indicate growth strategies.…
Root water uptake depends on soil moisture which is primarily fed by throughfall in forests. Several biotic and abiotic elements shape the spatial distribution of throughfall. It is well documented that throughfall patterns result in reoccurring higher and lower water inputs at certain locations. However,…
Trees balance temporal asynchrony in carbon source and sink activity by accumulating and using non‐structural carbon (NSC). Previous work has demonstrated differences in the amount and distribution of NSC stored in stemwood in tropical tree species and related these patterns in NSC distribution to tree…
Plant phenology plays a vital role in assessing climate change. To monitor this, individual plants are traditionally visited and observed by trained volunteers organized in national or international networks - in Germany, for example, by the German Weather Service, DWD. However, their number of observers…
Abstract Population size, genetic diversity, and performance have fundamental importance for ecology, evolution, and nature conservation of plant species. Despite well‐studied relationships among environmental, genetic, and intraspecific trait variation (ITV), the influence of population size on these…
Erscheinungsort nicht ermittelbar: Wiley, 2023-08-07
Aim Theoretical, experimental and observational studies have shown that biodiversity–ecosystem functioning (BEF) relationships are influenced by functional community structure through two mutually non‐exclusive mechanisms: (1) the dominance effect (which relates to the traits of the dominant species);…
Phenology of plants is changing rapidly due to global change which may have a large impact on many interactions in ecosystems. So far studies on the phenology of herbaceous species are largely underrepresented in phenology research which is mainly focused on trees and shrubs. In this study we investigated…
Aims: Elevational patterns of plant species richness may be caused by multiple underlying mechanisms, and the same pattern can be predicted by different mechanisms. Using the steep elevational gradient of Tenerife as a model system, we aimed to test if the application of a trait‐based approach can help…
The understanding of the responses of plant populations to plant community diversity is still incomplete. While the link between plant community diversity and biomass production is already well studied, the one between community diversity and plant longevity and life cycle is not. Especially longevity…
Here we provide the ‘Global Spectrum of Plant Form and Function Dataset’, containing species mean values for six vascular plant traits. Together, these traits –plant height, stem specific density, leaf area, leaf mass per area, leaf nitrogen content per dry mass, and diaspore (seed or spore) mass – define…
Functional biogeography focuses on understanding the causes and consequences of the spatial distribution of functional traits. One of the functions that plants fulfill in ecosystems is to regulate the exchange of energy and matter through photosynthesis (i.e., Gross Primary Production, GPP). In this…
Functional rarity (FR) — a feature combining a species' rarity with the distinctiveness of its traits — is a promising tool to better understand the ecological importance of rare species and consequently to protect functional diversity more efficiently. However, we lack a systematic understanding of…
Erscheinungsort nicht ermittelbar: Wiley, 2022-10-01
Abstract Environmental monitoring involves the quantification of microscopic cells and particles such as algae, plant cells, pollen, or fungal spores. Traditional methods using conventional microscopy require expert knowledge, are time‐intensive and not well‐suited for automated high throughput. Multispectral…
Abstract Questions Livestock management in rangelands depends on the production of plant biomass. Biomass production is driven by the temporal and spatial variability in precipitation, but our understanding of how precipitation variability mediates grazing effects on biomass production is still fragmented.…
Summary Non‐structural carbon (NSC) storage (i.e. starch, soluble sugras and lipids) in tree stems play important roles in metabolism and growth. Their spatial distribution in wood may explain species‐specific differences in carbon storage dynamics, growth and survival. However, quantitative information…