A5007181048- Plant Water Relations and Carbon Dynamics
- Forest Management and Policy
- Forest ecology and management
- Land Use and Ecosystem Services
- Forest Ecology and Biodiversity Studies
- Tree-ring climate responses
- Atmospheric and Environmental Gas Dynamics
- Conservation, Biodiversity, and Resource Management
- Climate variability and models
- Fire effects on ecosystems
- Video Surveillance and Tracking Methods
- Plant responses to elevated CO2
- Soil Management and Crop Yield
- Atmospheric chemistry and aerosols
- Sustainability and Climate Change Governance
- Anomaly Detection Techniques and Applications
- Remote Sensing and LiDAR Applications
- Forest Biomass Utilization and Management
- International Development and Aid
- Environmental Impact and Sustainability
- Research Data Management Practices
- demographic modeling and climate adaptation
- Banana Cultivation and Research
- Climate Change Policy and Economics
- Aeolian processes and effects
Technical University of Munich
2021-2024
Heidelberg University
2014
Abstract Historically, humans have cleared many forests for agriculture. While this substantially reduced ecosystem carbon storage, the impacts of these land cover changes on terrestrial gross primary productivity (GPP) not been adequately resolved yet. Here, we combine high-resolution datasets satellite-derived GPP and environmental predictor variables to estimate potential forests, grasslands, croplands around globe. With a mean 2.0 kg C m −2 yr −1 represent most productive two thirds...
Abstract Forests mitigate climate change by storing carbon and reducing emissions via substitution effects of wood products. Additionally, they provide many other important ecosystem services (ESs), but are vulnerable to change; therefore, adaptation is necessary. Climate‐smart forestry combines mitigation with adaptation, whilst facilitating the provision ESs. This particularly challenging due large uncertainties about future climate. Here, we combined modeling robust multi‐criteria...
Abstract Forests provide important ecosystem services (ESs), including climate change mitigation, local regulation, habitat for biodiversity, wood and non‐wood products, energy, recreation. Simultaneously, forests are increasingly affected by need to be adapted future environmental conditions. Current legislation, the European Union (EU) Biodiversity Strategy, EU Forest national laws, aims protect forest landscapes, enhance ESs, adapt change, leverage products mitigation bioeconomy. However,...
Abstract Background Forests mitigate climate change by reducing atmospheric $$\mathrm {CO_2}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mi>CO</mml:mi> <mml:mn>2</mml:mn> </mml:msub> </mml:math> -concentrations through the carbon sink in forest and wood products, substitution effects when products replace carbon-intensive materials fuels. Quantifying mitigation potential of forests is highly challenging due to influence multiple important factors such as age...
Abstract Since its emergence in the 1990s, science of attributing observed phenomena to human-induced and natural climate drivers has made remarkable progress. To ensure relevance uptake impact attribution studies, scientists must effectively engage with stakeholders. This engagement allows stakeholders pose key questions, which can then substantiate evidence evaluating existence causal links. Although significant advancements have been science, much work remains understand varied...
Land use, land management, and cover change (LULCC) play a pivotal role in shaping ecosystems, influencing global local climate, biodiversity, the provision of resources.Therefore, effective use strategies need to consider trade-offs between these often competing objectives.&#160;Legislative frameworks, including EU Biodiversity Strategy, Forest national policies, aim protect natural landscapes, enhance ecosystem services, leverage resources for climate mitigation bioeconomy. However,...
Geoscientific models play a pivotal role in understanding global change impacts on the Earth system and are therefore highly relevant for decision-making. However, their complexity&#8212;including combination of pre-processing, modeling, post-processing workflows&#8212;poses significant challenges to reproducibility accessibility, even when adhering FAIR data principles.Here, we present insights from land surface modeling community, based survey 20 dynamic vegetation participating...
Forest ecosystems are vital for a multitude of ecosystem services including timber provision, climate change mitigation, local regulation, and provision habitat biodiversity. However, previous studies have primarily focused on individual service indicators, with limited attention to the underlying biophysical mechanisms. Investigating multiple under diverse strategies is critical assessing their impacts forest ecosystems. Therefore, in this study, we used global dynamic vegetation model...
Abstract. Late-spring frost (LSF) is a critical factor influencing the functioning of temperate forest ecosystems. Frost damage in form canopy defoliation impedes ability trees to effectively photosynthesize, thereby reducing tree productivity. In recent decades, LSF frequency has increased across Europe, likely intensified by effects climate change. With increasing warming, many deciduous species have shifted towards earlier budburst and leaf development. The start growing season not only...
Abstract The frequency of heatwaves, droughts and their co‐occurrence vary greatly in simulations different climate models. Since these extremes are expected to become more frequent with change, it is important understand how vegetation models respond climatologies heatwave drought occurrence. In previous work, six scenarios featuring drought‐heat signatures have been developed investigate single versus compound affect carbon dynamics. Here, we use force dynamic global model agreement cycle...
We use weakly supervised structured learning to track and disambiguate the identity of multiple indistinguishable, translucent deformable objects that can overlap for many frames. For this challenging problem, we propose a novel model which handles occlusions, complex motions non-rigid deformations by jointly optimizing flows latent intensities across These are variables user cannot directly provide labels. Instead, leverage formulation uses weak annotations find best hyperparameters model....
Plants growing in low phosphorus (P) soils, such as the predominant soils of Amazonia, are believed to devote more energy acquiring P through absorptive root production, symbionts, and exudates than plants fertile soils. Accounting for these costs vegetation models is essential, underestimating carbon (C) allocation nutrient acquisition may lead overestimating plant biomass growth. We developed a quantitative model test theoretical framework C across soil gradients. The considers four...
Forests play a crucial role in climate change mitigation strategies. They store carbon biomass, soils, and wood products, substituting carbon-intensive products with further avoids greenhouse gas emissions. However, substantial uncertainties surround the quantification of their actual potentials. Using dynamic vegetation modeling, we quantify impact various factors on potential forests, namely nitrogen deposition, disturbances, forest age, type, harvesting usage practices, decarbonization...
Abstract. Due to climate change severe drought events have become increasingly commonplace across Europe in recent decades with future projections indicating that this trend will likely continue, posing questions about the continued viability of European forests. Observations from most pan-European droughts suggest these types "hotter droughts" may acutely alter carbon balance forest ecosystems. Yet, substantial uncertainty remains regarding possible impacts on sink. Dynamic vegetation...
Abstract. Forest disturbances can cause shifts in boreal vegetation cover from predominantly evergreen to deciduous trees or non-forest dominance. This, turn, impacts land surface properties and, potentially, regional climate. Accurately considering such future projections of dynamics under climate change is crucial but hindered e.g. uncertainties disturbance regimes. In this study, we investigate how sensitive forest are additional changes We use the dynamic model LPJ-GUESS and disentangle...
When tracking and segmenting multiple objects under heavy occlusion, a large class of algorithms can greatly benefit from preprocessing that reliably assesses the number individuals in each cluster. This is difficult task when relying on local information only, due to scarcity training examples lack strongly predictive features. In this paper, we develop deterministic graphical model address problem counting foreground region as global inference across entire video sequence. We show improves...
Abstract. Late-spring frost (LSF) is a critical factor influencing the functioning of temperate, forest ecosystems. Frost damage in form canopy defoliation impedes ability trees to effectively photosynthesize thereby reducing tree productivity. In recent decades, LSF frequency has increased across Europe, likely intensified by effects climate change. With increasing warming, many deciduous species have shifted towards earlier budburst and leaf development. The start growing season not only...
In the evergreen boreal forest, field studies show that vegetation does not always regenerate to its previous state after disturbance but instead transitions systems dominated by deciduous trees or non-forest vegetation. Gaining a better understanding of drivers and impacts post-disturbance recovery is thus crucial accurately project future dynamics associated on carbon, water, energy balance region. We here perform simulations with dynamic model LPJ-GUESS investigate (1) if observations can...
The recent intensification of hotter droughts due to climate change has resulted in a reduced resilience forests at global scale. This response is not only mirrored by increasing rates tree dieback, but also reflected canopy greenness (Buras et al., 2021) as well emerging statistical early-warning signals declining forest (EWS, Forzieri 2022). Yet, systematic investigation on how atmospheric water demand, decline, and EWS are linked across European including the most extreme 2022 2023...
Increasingly frequent and intense drought events can jeopardize the current future productivity health of forests. Consequently, ability dynamic vegetation models (DVMs) to simulate impacts is paramount improving their representation carbon cycle. To capture physiological damage inflicted by drought, many state-of-the-art DVMs have implemented representations plant hydraulic architecture in recent years. Although understanding underlying processes governing hydrodynamic behavior plants has...
Abstract. Maintaining or increasing forest carbon sinks is considered essential to mitigate the rise of atmospheric CO2 concentrations. Harvesting trees perceived as having negative consequences on both standing biomass stocks and sink strength. However, harvesting needs be examined from a stand canopy perspective since assimilation occurs in canopy. Here we show that threshold leaf area exists beyond which additional leaves do not contribute ecosystem fluxes. The associated can harvested...
&lt;p&gt;Historically, many forests worldwide were cut down and replaced by agriculture. While this substantially reduced terrestrial carbon storage, the impacts of land-use change on ecosystem productivity have not been adequately resolved yet.&lt;/p&gt;&lt;p&gt;Here, we apply machine learning algorithm Random Forests to predict potential gross primary (GPP) forests, grasslands, croplands around globe using high-resolution datasets satellite-derived GPP, land cover,...