Assessment of the environmental impacts of ocean acidification (OA) and carbon capture and storage (CCS) leaks using the amphipod Hyale youngi

Abstract

This study aims to ascertain the effects of CO induced water acidification and leaks from Carbon Capture and Storage activities on the South American amphipod Hyale youngi. A 10-day acute toxicity test was performed using sediments from two sites located inside the Santos Estuarine System. They were subjected to five pH treatments (8.1, 7.6, 7.0, 6.5, and 6.0). Metals (Cd, Cu, Cr, Pb, Ni and Zn) and the metalloid As were analyzed to determine the influence of their acidification-related mobility on the amphipods mortality. The results showed that mortality becomes significant when compared to control in pH 6.5 in the Canal de Piaçaguera sediment (contaminated) and at pH 6.0 in Ilha das Palmas sediment (reference).

Sensitivities of two tropical epibenthic amphipodsto physical chemical variables and reference toxicants

“…The tolerance rangefor H. nigraand H.youngi (highest survival at salinities between 30 and 40and temperatures between 20°C and 25°C) were expected as they are typicalof marine habitats in tropical and subtropical areas.Although the H. youngi amphipod has showed a lower survival rates at salinity 20 under 25°C, its application is still recommended and acceptable when the experiments conditions are controlled following the criteria mentioned in the table 1 (optimal conditions for the application of these species). Moreover, a previous study has reported a significant mortality of H. youngi species at pH ≤ 6.5 (Goulding et al 2017) while the results obtained in this study showedhigher survival at the highest pH level tested (pH 8.5) which confirm the sensitivity of this species to acidified conditions (CO 2 enrichment).…”

“…This study sought to assess the sensitivity of two Brazilian's epibenthic marine amphipods (Hyalenigra and Hyaleyoungi) to reference contaminants in order todetermine their potential as test-organisms in toxicity tests. Passarelli et al (2016) reported the potential of sensitivity of the Brazilian amphipod Hyalenigrato be used as test organisms in sediment toxicity tests and another study showed the sensitivity of Hyaleyoungito enrichment of CO 2 in seawater (Goulding et al 2017). However, this is the first attempt evaluating the sensitivity of these species to toxic substances in water that is useful as reference assay, and considering the environmental parameters.…”

Ocean acidification studies and the uncertainties relevance on measurements of marine carbonate system properties

“…The character * indicates the data that is closer to climate than weather goal, but still characterized as weather. areas (Ito et al, 2016;Orselli et al, 2018); studies of the impact of OA and other stressors in marine biota (Garrard et al, 2013;Rodríguez-Romero et al, 2014;Goulding et al 2017); and laboratory experiments (Orte et al, 2014;Scherner, et al, 2016;Schneider et al, 2018). Some examples of the BrOA studies done in the last five years associated with their classification based on the method precision are summarized in Table 2 and Figure 3.…”

Anthropocene: The Challenges for a New World

“…Pesquisadores da Rede de Pesquisa Brasileira em Acidificação dos Oceanos (BrOA), 113 têm projetos sobre a biogeoquímica de ecossistemas costeiros e estuarinos, o efeito da acidificação dos oceanos em organismos marinhos e processos físicos e geoquímicos do sistema carbonato marinho e da troca de carbono na interface armar. [114][115][116][117] Em um artigo de 2016, 114 são destacados os grandes desafios e dificuldades enfrentadas e a necessidade de medições continuadas durante longos períodos para compreender a variabilidade dos sistemas carbonato em ecossistemas marinhos. Os autores destacam a grande diversidade dos sistemas costeiros e de oceano aberto na costa do Atlântico Sul Oeste (WSAO) e sua vulnerabilidade à acidificação e revisam os esforços observacionais, experimentais e de modelagem que estão sendo realizados no contexto do BrOA.…”