Assessing the Impact of Arsenic on Benthic Estuarine Fauna Behavior: Implications for Ecosystem Sustainability DOI Open Access
Cátia Venâncio,

Letizia Degara,

Adília Pires

et al.

Sustainability, Journal Year: 2024, Volume and Issue: 16(22), P. 9728 - 9728

Published: Nov. 8, 2024

Estuaries are dynamic ecosystems exposed to a wide range of stressors, including metal (loid) contamination. The assessment the behavioral characteristics species inhabiting these may provide new point view on chemical contamination since behaviors generally regulate population dynamics and ecosystem stability. Therefore, this study aimed investigate changes in patterns three estuarine benthonic (the native polychaete Hediste diversicolor, non-native Arenicola marina, clam Scrobicularia plana) when different concentrations metalloid arsenic (0, 0.5, 1.5, 4.5, 13.5, 40.5 mg/kg sediment). Behavioral included bioturbation activity (measured by fluorescent particle remobilization) determination maximum penetration depth each species, both after 1 21 days exposure. After exposure, ability burrow was evaluated. Results showed that S. plana immediately reduced exposure As (day 1) but disappeared with time 21), whereas A. marina significantly increased from day 21, expressing their highest values sediments mg As/kg 21. For H. no were observed within or between times. burrowing assay nearly doubled its time, as well double at ≥1.5 sediment. These results suggest can be quite resilient over time. However, greater remobilization cause displacement fauna, disrupting natural mutualism created environments, possibly decreasing estuary functionality biodiversity. assessments under improve establishment more feasible protection goals for sustainable estuaries.

Language: Английский

Assessing the Impact of Arsenic on Benthic Estuarine Fauna Behavior: Implications for Ecosystem Sustainability DOI Open Access
Cátia Venâncio,

Letizia Degara,

Adília Pires

et al.

Sustainability, Journal Year: 2024, Volume and Issue: 16(22), P. 9728 - 9728

Published: Nov. 8, 2024

Estuaries are dynamic ecosystems exposed to a wide range of stressors, including metal (loid) contamination. The assessment the behavioral characteristics species inhabiting these may provide new point view on chemical contamination since behaviors generally regulate population dynamics and ecosystem stability. Therefore, this study aimed investigate changes in patterns three estuarine benthonic (the native polychaete Hediste diversicolor, non-native Arenicola marina, clam Scrobicularia plana) when different concentrations metalloid arsenic (0, 0.5, 1.5, 4.5, 13.5, 40.5 mg/kg sediment). Behavioral included bioturbation activity (measured by fluorescent particle remobilization) determination maximum penetration depth each species, both after 1 21 days exposure. After exposure, ability burrow was evaluated. Results showed that S. plana immediately reduced exposure As (day 1) but disappeared with time 21), whereas A. marina significantly increased from day 21, expressing their highest values sediments mg As/kg 21. For H. no were observed within or between times. burrowing assay nearly doubled its time, as well double at ≥1.5 sediment. These results suggest can be quite resilient over time. However, greater remobilization cause displacement fauna, disrupting natural mutualism created environments, possibly decreasing estuary functionality biodiversity. assessments under improve establishment more feasible protection goals for sustainable estuaries.

Language: Английский

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