2012.11.29 第13回GCOE国際セミナー

2012年月9月29日(木)にGCOE国際セミナーを開催します。本セミナーは、GCOEアジア保全生態学コース授業科目「国際セミナーI,II」(D1,D2の必修科目)の一環です。この科目では、一年間を通じて少なくとも2回は出席することが条件となっています。対象となる院生の方々は参加してください。また他の大学院生や学部生、スタッフの方の参加も是非ご参加ください。
 
講演者のDr. Jorge García Molinos さんは、S9およびGCOE共同企画ワークショップ「International Workshop on Freshwater Biodiversity Conservation in Asia」のために招聘された方です。このワークショップは本学の工学研究院が企画しております。こちらも皆様お誘い合わせの上、是非ご参加ください(http://www.conservationecology.asia/sympSemi/simposium/IWFBCA)。
 
 
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日時:11月29日 13:30~16:00
会場:箱崎キャンパス
3号館第二会議室
 
"Disturbances in a changing environment: does the pattern matter?"
 
Jorge García Molinos
 
Disturbances are key promoters of temporal and spatial environmental variability and one of the main drivers generating patterns of distribution, abundance and diversity at all levels of ecological organization from genes to ecosystems, yet our understanding of the mechanisms behind these links is still limited. Disturbance regimes are not static but continuously changing under human influence from global through regional and local scales. My research is very much motivated by the principle that a strong ecological understanding of the mechanisms influencing links between disturbances, environmental variability and ecological patterns and processes is crucial to generate effective environmental management strategies, to preserve biodiversity and to guarantee sustainable development. To do this we need to search for standardized ways to define existing patterns of disturbance. In this context, quantitative ecology provides a useful tool for solving this type of ecological problem across temporal and spatial scales.
 
"Understanding the price formation process on the Japanese wholesale tuna market through inverse demand analysis"
 
Marko Jusup
 
We analyzed the price formation process on the Japanese wholesale tuna market by means of a Generalized Synthetic Inverse Demand model and an exhaustive monthly trading dataset spanning a ten-year period (1998-2007). Additional four years (2008-2011) of monthly trading data were utilized to assess the predictive performance of the model. The overall goodness of fit within-sample was found to be remarkably high (R2=0.867). The model was also found to retain most of its explanatory power out-of-sample (R2=0.825), at least in the near future. These results imply that (i) the available quantities of fish were by far the most important factor in the price formation on the Japanese market, and (ii) demand for tuna was remarkably stable over the past 15 years even in the wake of the 2008 Financial Crisis.
 
 
 
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