- webinar
- Congress
- Side event
- Capacity Building Activities
- Knowledge-transfer
- Klimagune
- BC3 Summer School
- Training Caravan
- Seminars
- BC3 Seminar Series
- Workshops
- Other Workshops
- Spring University
- Ingurugela
- Other Seminars
- Public Lectures
- Other Training Events
- Other Education Events
- Book Presentations
- Training
- Education Activities
- Others
Calendar of Events
M Mon
T Tue
W Wed
T Thu
F Fri
S Sat
S Sun
0 events,
1 event,
BC3 Seminars: Exploring option pricing via volatility asymmetry
BC3 Seminars: Exploring option pricing via volatility asymmetry
Isabel Casas
Marie Skłodowska-Curie Fellow at BCAM - Basque Center for Applied Mathematics
This paper proposes to model the asymmetric response of the volatility to the sign of past returns (leverage effect) nonparametrically in the context of stochastic volatility models. The new stochastic volatility specifications are able to generate volatility clustering and allow for a flexible time-varying functional form of the volatility asymmetry. The objective is to improve option price forecasting by improving the volatility forecasting given that the option pricing depends mainly on the moneyness, maturity and the asset price volatility. The forecasting performances of the new models are compared with three parametric asymmetric stochastic volatility models via intensive Monte Carlo experiments and empirically by fitting the benchmarks and our proposals to two series of financial returns. Using S&P 400 MidCap and S&P 500 options for the 2008 and 2013-1014 periods, we examine parametric and nonparametric forecast performance from three perspectives: (1) underlying volatility forecast accuracy, (2) out-of-sample pricing forecast, and (3) dynamic delta hedging effective cost.
To achieve these objectives, our group will explore the synergies and trade-offs between multiple dimensions of space and time, and between water, energy, and agricultural sectors.. This multi-scale approach will be adopted to propose preferable solutions to approach global challenges for achieving sustainability, while trying to integrate a nexus approach from river basin up to country and global scales. Additionally, we will characterize how uncertainty is perceived by stakeholders and policy makers, how trust in models influences implementation and how researchers can best communicate and disseminate their methodologies, results, and broader impacts to policy relevant stakeholders.
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
1 event,
BC3 Seminars: Catchment zoning to enhance co-benefits and minimise trade-offs between ecosystem services and biodiversity conservation
BC3 Seminars: Catchment zoning to enhance co-benefits and minimise trade-offs between ecosystem services and biodiversity conservation
Dr. Virgilio Hermoso and Dr. Simone Langhans.
Integrating ecosystem services (ES) in landscape planning can help identify conservation opportunities by fostering co-benefits between biodiversity conservation and maintenance of regulation and cultural ecosystem services. However, potential trade-offs that arise from accounting for provisioning ES incompatible with biodiversity conservation should be considered. These trade-offs have been, however, overlooked to date, especially in freshwater systems. I will demonstrate how to identify priority areas to enhance co-benefits between conservation of freshwater biodiversity (139 species of freshwater fish, turtles and waterbirds) and two regulation-cultural ES (carbon storage/ flood retention and perennial water availability) while minimising trade-off with two provisioning ES (groundwater provisioning and recreational fisheries) using a catchment in northern Australia as a case study. This novel approach can help address the increasingly complex catchment management challenges arising from increasing demand for provisioning services and diminishing availability of resources, and management and planning challenges in other realms facing similar problems.
2 events,
BC3 Seminars: “How decision analysis theory can be used for river management”
BC3 Seminars: “How decision analysis theory can be used for river management”
Dr. Simone Langhans
Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany
River assessment and management are challenges to scientists and practitioners alike. Rivers, being highly complex ecosystems, are difficult to characterize with adequate indicators and predicting outcomes of river management actions are, therefore, sophisticated and affected by large uncertainty. Moreover, many stakeholders with potentially diverging interests are involved or affected by river management decisions. Although different approaches to river assessment and management exist, there is a need for a concept that accounts for these difficulties. Decision analysis theory provides appropriate techniques for developing an integral river management concept. In this talk, I will explain the different elements of such a river management concept, i.e. objectives, results of river state assessment, potential management actions, and predictions of system response to management actions, and illustrate the details with different examples from Switzerland and New Zealand.
BC3 Seminars: Species distribution modelling of freshwater organisms
BC3 Seminars: Species distribution modelling of freshwater organisms
Dr. Sami Domisch
Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany
Species occurrence information consists in general of heterogeneous data, ranging from point records that provide accurate information in geographic and environmental space, to coarse expert range maps accounting for dispersal barriers or historical biogeographic limits. Combining both data types in a species distribution model (SDM) framework using newly-developed (1 km) freshwater-specific environmental variables allows to make fine-grain and improved estimates of species distributions. I will demonstrate how the freshwater-specific variables can be easily created for any given region, and present the modelling framework using the North American freshwater fish fauna as a case study. The predictions highlight diversity patterns and hotspots along the stream network, further contributing to the understanding of the current-day environmental factors that shape the distribution of freshwater fish ranges, with the potential in ultimately aiding conservation and management efforts.
