Publicación:
Tidally driven sulfidic conditions in Peruvian mangrove sediments

dc.contributor.author Pérez A. es_PE
dc.contributor.author Gutiérrez D. es_PE
dc.contributor.author Saldarriaga M.S. es_PE
dc.contributor.author Sanders C.J. es_PE
dc.date.accessioned 2024-05-30T23:13:38Z
dc.date.available 2024-05-30T23:13:38Z
dc.date.issued 2018
dc.description.abstract The seasonal influence of tidal regimes on sulfidic conditions was studied in intertidal environments from a mangrove estuary in Northern Peru. Along two sampling stations, creek water and sediment cores were collected during the dry and wet seasons at all tidal phases (ebb, low, flow, and high tides). Physical-chemical parameters were measured in the creek water (temperature, salinity, pH, Eh, and DO), whereas pH, redox potential (Eh), and total organic matter contents were obtained from the sediment cores. In addition, total dissolved sulfide content ∑ (H2S, HS−, H2−) was measured from sediment pore water. During the dry and wet seasons, the creek water pH, Eh, and dissolved oxygen were lowest in low tide, whereas oxygenated conditions and higher pH and Eh values prevailed in high tide. The total organic matter content in sediments was higher during the dry season, with the highest contents observed in the seaward station. Higher average ∑H2S (landward station, 243.1 ± 234.9 μM L−1; seaward station, 544.9 ± 174.4 μM L−1) were noted during wet season compared to dry season (landward station, 5.3 ± 4.5 μM L−1; seaward station, 430.2 ± 435.1 μM L−1). These ∑H2S contents increased towards the bottom of the sediment column, reflecting the anaerobic decomposition of the organic matter and sulfate reduction. This study provides insight to the geochemical dynamics of intertidal mangrove sediments that are sensitive to fluctuating reducing and sulfidic conditions, oscillating at time scales of minutes to hours.
dc.description.sponsorship Consejo Nacional de Ciencia, Tecnología e Innovación Tecnológica - Concytec
dc.identifier.doi https://doi.org/10.1007/s00367-018-0549-3
dc.identifier.scopus 2-s2.0-85053529876
dc.identifier.uri https://hdl.handle.net/20.500.12390/807
dc.language.iso eng
dc.publisher Springer Verlag
dc.relation.ispartof Geo-Marine Letters
dc.rights info:eu-repo/semantics/openAccess
dc.subject Sulfur compounds
dc.subject Biochemical oxygen demand es_PE
dc.subject Biogeochemistry es_PE
dc.subject Biological materials es_PE
dc.subject Dissolved oxygen es_PE
dc.subject Drought es_PE
dc.subject Organic compounds es_PE
dc.subject Redox reactions es_PE
dc.subject Salinity measurement es_PE
dc.subject Sedimentation es_PE
dc.subject Anaerobic decomposition es_PE
dc.subject.ocde https://purl.org/pe-repo/ocde/ford#1.06.12
dc.title Tidally driven sulfidic conditions in Peruvian mangrove sediments
dc.type info:eu-repo/semantics/article
dspace.entity.type Publication
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