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| ADUAN, R. E.; VILELA, M. de F.; KLINK, C. A.. |
| ABSTRACT: In the Cerrado Biome, the internal carbon cycling, the main carbon pools size, and the fluxes intensity between carbon pools are far from to be completely understood. This study presents the main carbon pools and cycling fluxes in terrestrial ecosystems, emphasizing the neotropical savannas. This study will also review literature of internal carbon cycling in the Cerrado. In spite of the science advances, the knowledge of internal carbon dynamics in the Cerrado are scarce. The relation between the carbon pools size and fluxes intensity and the Cerrado's vegetation phytofisionomies, soil gradient, and climate still remains unknown. The carbon pools and fluxes data analysis show that the Cerrado's aerial carbon pools are smaller than the forest... |
| Tipo: Documentos (INFOTECA-E) |
Palavras-chave: Fluxo de carbono; Carbon fluxes; Carbon cycling.; Biomassa; Cerrado; Matéria Orgânica; Serapilheira; Solo.; Biomass; Organic matter; Soil.. |
| Ano: 2003 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/569012 |
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| Chapperon, Coraline; Clavier, Jacques; Dugué, Clément; Amice, Erwan; Le Goff, Marion; Roussel, Sabine. |
| Abalone (Haliotis spp.) are commercially important marine shellfish species worldwide. Knowledge about the physiology of abalone that impacts life-history traits is important for a better understanding of the biology of the species and the impact of stressful husbandry procedures at different seasons. The present study quantified the seasonal and diurnal variations in four physiological parameters of the European species Haliotis tuberculata, i.e. carbon aerial and aquatic respiration, calcification and excretion rates, and the effect of prolonged aerial exposure upon abalone aerial respiration. We also investigated the effect of individual size upon these physiological parameters. Aquatic respiration and calcification rates showed an allometric... |
| Tipo: Text |
Palavras-chave: Ormer; Metabolism; Carbon fluxes; Physiology. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00431/54243/55886.pdf |
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| Lorrain, A.; Clavier, J.; Thebault, J.; Tremblay-boyer, L.; Houlbreque, F.; Amice, E.; Le Goff, M.; Chauvaud, L.. |
| Researchers often use metabolic measurements in the field over narrow time periods to estimate an organism's metabolism over large time scales. Here, we measured in situ respiration, calcification and excretion rates of the tropical gastropod Tectus niloticus L. through benthic chamber experiments. Our samples spanned a 21 h time frame and were taken during both the warm and cool seasons. We assessed diel and seasonal variability in metabolic rates, as well as the effect of individual size and the contribution of shell epi-and endobionts. Our results show that metabolic rates vary through time at both diel and seasonal scales, as measured fluxes for respiration and calcification were significantly higher at night during the warm season. This nocturnal... |
| Tipo: Text |
Palavras-chave: Gastropod; Seasonal variations; Diel variations; Size; Carbon fluxes; CO2; CaCO3; New Caledonia. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00256/36675/39633.pdf |
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