The biological carbon pump in the 21st century: potential threats of rising sea surface temperature (SST) and coastal pollution by emerging contaminants (ECs) (2024)
- Authors:
- Autor USP: FRAZÃO, LUCIANA ROCHA - IO
- Unidade: IO
- Sigla do Departamento: IOB
- Subjects: OCEANOGRAFIA BIOLÓGICA; PLÂNCTON MARINHO
- Language: Inglês
- Abstract: The thesis presents a compilation of studies conducted with the goal of investigating the main drivers of biological carbon pump (i.e., marine microbial plankton) and the potential effects of the two main threats to ocean carbon cycle in the 21st century: ocean warming and coastal pollution. At first, Chapter I presents an overview of conceptual advances in marine microbial ecology which have led to current well-established models of carbon flows in oligotrophic pelagic ecosystems and the pivotal role of microbial plankton in the biological carbon pump. Additionally, the state of the art of microbial ecology in the South Atlantic Subtropical Gyre (SASG), an ecological important region to global carbon cycle that remains poorly understood, is discussed. In Chapter II, the long-term responses of ocean warming in marine microbes was investigated on a global scale using CMIP6 models and machine learning. All microbial biomass projections (µg C L-1) show a decrease in the late 21st century for the four Shared Socioeconomic Pathways (SSPs) of IPCC. The biomass projections also indicate the expansion of the SASG, and a near-global prevalence of heterotrophy (primary production rates lower than bacterial production), which has obvious implications for the biological carbon pump, and thus, to global carbon cycle and climate regulation. Finally, in Chapter III, the occurrence of pharmaceuticals and personal care products (PPCPs), one of the main classes of emerging contaminants (ECs), was investigated for the first time in the inner shelf of Ubatuba, on the northern cost of São Paulo State (Brazil). LC-MS/MS analysis revealed the presence of 15 compounds, including anti-inflammatories/analgesics, β-blockers, anti-hypertensives, psychoactive drugs, caffeine, cocaine its human metabolite.The spatial distribution of these compounds suggests that lateral advection by coastal currents may transport emerging contaminants, such as those recorded here, far from their original source. The ecological risk (ERA-USEPA) assessed for primary producers indicates moderate to high risk for some of these compounds to photosynthetic carbon fixation, and consequently, to the carbon pathways in pelagic food webs.
- Imprenta:
- Data da defesa: 13.06.2024
-
ABNT
FRAZÃO, Luciana Rocha. The biological carbon pump in the 21st century: potential threats of rising sea surface temperature (SST) and coastal pollution by emerging contaminants (ECs). 2024. Tese (Doutorado) – Universidade de São Paulo, São Paulo, 2024. Disponível em: https://doi.org/10.11606/T.21.2024.tde-21082024-144428. Acesso em: 22 fev. 2026. -
APA
Frazão, L. R. (2024). The biological carbon pump in the 21st century: potential threats of rising sea surface temperature (SST) and coastal pollution by emerging contaminants (ECs) (Tese (Doutorado). Universidade de São Paulo, São Paulo. Recuperado de https://doi.org/10.11606/T.21.2024.tde-21082024-144428 -
NLM
Frazão LR. The biological carbon pump in the 21st century: potential threats of rising sea surface temperature (SST) and coastal pollution by emerging contaminants (ECs) [Internet]. 2024 ;[citado 2026 fev. 22 ] Available from: https://doi.org/10.11606/T.21.2024.tde-21082024-144428 -
Vancouver
Frazão LR. The biological carbon pump in the 21st century: potential threats of rising sea surface temperature (SST) and coastal pollution by emerging contaminants (ECs) [Internet]. 2024 ;[citado 2026 fev. 22 ] Available from: https://doi.org/10.11606/T.21.2024.tde-21082024-144428 - Eutrofização por esgotos domésticos e sua relação com a ecologia e fisiologia do fitoplâncton marinho no litoral do Estado de São Paulo (Ubatuba, Praia Grande e Santos)
- Changes in the swimming behavior of Temora turbinata (Copepoda, Calanoida) in response to sub-lethal concentrations of caffeine and triclosan
- Pharmaceuticals and personal care products in the coastal zone of Ubatuba (Brazil): An ecological and touristic hotspot facing high contamination
- Microbial ecology of the South Atlantic Subtropical Gyre: a state-of-the-art review of an understudied ocean region
How to cite
A citação é gerada automaticamente e pode não estar totalmente de acordo com as normas
