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Project 2.02 - Organic Carbon Dynamics in Seasonal Shallow Lakes from Neotropical Floopains
Due to the important role of wetlands in the global carbon cycle, this project is focused on the carbon dynamics in seasonal shallow lakes (SSLs) (Mitsch et al. 2013). The objectives are to study the carbon sequestration mechanisms, the carbon storage capacity and the functioning of SSLs as carbon source or sink. Furthermore, investigate C3 and C4 plant abundance dynamics and to what extent these two kinds of photosynthetic pathways contribute to the sediment organic carbon storage in SSLs. The ecological aspects of SSLs mentioned before are analyzed by studying plant assemblages in terms of species composition, plant biomass production and C3 and C4 plant abundance. Moreover, flood pulse patterns (number of flooded days/year), geomorphology (bathymetry), and sediment composition are analyzed. Using stable isotope analysis (SIA), determine the stable carbon isotope (δ13C) values of sediment and dominant plant species. The δ13C values are used to identify the C3 or C4 photosynthesis pathway of the most abundant plant species as carbon sources and to track carbon in sediment.  Due to the isotopic composition of the source material does not vary significantly during decomposition (Balesdent et al. 1993, Fellerhoff et al. 2003) it is possible to identify it in sediment cores by stable isotope analysis. To obtain compatible information and draw more comprehensive conclusions a wide-ranging and time-spanning sampling approach is carried out in several SSLs from both the Brazilian Pantanal and the Colombian Orinoco-Llanos. Our data will contribute to Wetland classification and assessment of Ecosystem Services performed by wetlands, especially carbon storage. Understanding these mechanisms will help to improve ecological engineering for climate change mitigation.    

Coordenador:
Dr. Karl Mathias Wantzen - Konstanz (Email: matthias.wantzen@uni-konstanz.com)
Equipe Científica:
Márcia Teixeira de Oliveira
Dr. Auberto Siqueira
Dr. Eduardo Guimarães Couto - UFMT (visualizar currículo)
Dr. João Paulo Novaes Filho
Doutorando (a) Luisa Vega

Eventos
- 9th INTECOL - International Wetlands Conference. Orlando, FL, USA. (2012)
Tipo de Apresentação: Outros
Classificação: Internacional
Apresentação: Mechanisms of biogenic carbon storage in seasonal shallow lakes from Colombian Llano and Brazilian Pantanal
- 6th Latin-American Symposium, Zoological Research Museum A. Koenig, Bonn, Germany (2013)
Tipo de Apresentação: Apresentação Oral
Classificação: Internacional
Apresentação: Carbon storage in Tropical wetlands
Instituições
Uni Konstanz
Universidade Federal de Mato Grosso
Publicações
Artigos Completo publicados em Periódicos
2014. VEGA, L. F., NUNES DA CUNHA, C., ROTHHAUPT, K-O., MOREIRA, M. Z., WANTZEN, K.M.. Does flood pulsing act as a switch to store or release sediment-bound carbon in seasonal floodplain lakes? Case study from the Colombian Orinoco-Llanos and the Brazilian Pantanal.  34:177-187 Does flood pulsing act as a switch to store or relea. Wetlands, v. 34 p. 177-187.


 
 
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Cuiabá - Mato Grosso - Brasil
Tel.: (65) 3664 1121 - inau@cppantanal.org.br