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Brian Chase

Brian CHASE - Director of Research CNRS
8
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Affiliations actuelles
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Présentation

My Research primarily focuses on the study of past environmental change in the arid to sub-humid environments of southern Africa. While this region is highly sensitive to cycles of regional and global environmental change, and has the potential to be a valuable indicator of past climatic variability, only a very few palaeoenvironmental archives have been recovered from the area, and its environmental history remains poorly understood. As a result, models that have been developed to elucidate the dynamics of regional ecosystems, and the environmental context for human and cultural evolution are often contentious, lacking sufficient evidence to make robust interpretations. This paucity of palaeoenvironmental information is largely a function of the region’s climate that often precludes the preservation of organic proxy data sources. My research concentrates on overcoming these obstacles by identifying and analyzing proxy archives that have either not experienced or are resistant to the effects of the region’s pronounced seasonality. I am presently exploring several primary research themes: 1. The development of fossilised rock hyrax middens as new palaeoenvironmental archive. 2. Studies of sediment cores from coastal wetlands in South Africa. 3. The development of *pdf*-based botanical-climatological transfer functions to derive quantitative estimates of palaeoclimatic parameters from palaeobotanical datasets. 4. Statistical methods for time -series and spatial analyses that improve the reliability and interpretations of individual records, and the combination and comparison of records. 5. Methods for data-model comparison that maximise the potential to infer the dynamical processes responsible for the environmental processes observed in the fossil record. 6. The assessment of the impact of past climate change on the development of the Cape Floristic Region. 7. The assessment of the impact of past environmental change on the development of early modern humans. [Google Scholar Metrics](https://scholar.google.fr/citations?user=CnGmVGcAAAAJ&hl=en "Google Scholar Citations")

Publications

matthieu-carre

Variability of 14C reservoir age and air–sea flux of CO2 in the Peru–Chile upwelling region during the past 12,000 years

Matthieu Carré , Donald Jackson , Antonio Maldonado , Brian Chase , Julian P. Sachs
Quaternary Research, 2016, 85 (01), pp.87 - 93. ⟨10.1016/j.yqres.2015.12.002⟩
Article dans une revue hal-01817625v1

Impacts of human activities on ecosystems during the past 1300 years in Pingnan area of Fujian Province, China

J. X. Xu , Z. Zheng , K. Y. Huang , Y. Y. Yue , J. Li
Quaternary International, 2013, 286, pp.29-35. ⟨10.1016/j.quaint.2012.05.033⟩
Article dans une revue hal-01814631v1

Vegetation changes during the past 40,000 years in Central China from a long fossil record

Jie Li , Zhuo Zheng , Kangyou Huang , Shixiong Yang , Brian M. Chase
Quaternary International, 2013, 310, pp.221 - 226. ⟨10.1016/j.quaint.2012.01.009⟩
Article dans une revue hal-01817583v1

Positive precipitation-evaporation budget from AD 460 to 1090 in the Saloum Delta (Senegal) indicated by mollusk oxygen isotopes

Moufok Azzoug , Matthieu Carré , Brian M. Chase , Abdoulaye Deme , Alban Lazar
Global and Planetary Change, 2012, 98, pp.54-62. ⟨10.1016/J.GLOPLACHA.2012.08.003⟩
Article dans une revue hal-00769536v1

A continuous record of vegetation and climate change over the past 50,000 years in the Fujian Province of eastern subtropical China

Yuanfu Yue , Zhuo Zheng , Kangyou Huang , Manuel Chevalier , Brian Chase
Palaeogeography, Palaeoclimatology, Palaeoecology, 2012, 365-366, pp.115-123. ⟨10.1016/j.palaeo.2012.09.018⟩
Article dans une revue hal-02131846v1

Mid-Holocene mean climate in the south eastern Pacific and its influence on South America

Matthieu Carré , Moufok Azzoug , Ilham Bentaleb , Brian Chase , Michel Fontugne
Quaternary International, 2012, 253, pp.55-66. ⟨10.1016/j.quaint.2011.02.004⟩
Article dans une revue hal-02131869v1
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Reconstructing past upwelling intensity and the seasonal dynamics of primary productivity along the Peruvian coastline from mollusk shell stable isotopes

James Sadler , Matthieu Carré , Moufok Azzoug , Andrew J. Schauer , Jesus Ledesma
Geochemistry, Geophysics, Geosystems, 2012, 13, pp.01015. ⟨10.1029/2011GC003595⟩
Article dans une revue hal-00757293v1

A 19.5kyr vegetation history from the central Cederberg Mountains, South Africa: Palynological evidence from rock hyrax middens

James Sadler , Matthieu Carré , Moufok Azzoug , Andrew Schauer , Jesus Ledesma
Palaeogeography, Palaeoclimatology, Palaeoecology, 2011, 309 (3-4), pp.253-270. ⟨10.1016/j.palaeo.2011.06.008⟩
Article dans une revue hal-02131876v1