Fontes e distribuição de matéria orgânica sedimentar no complexo estuarino-lagunar de Mundaú-Manguaba/AL, utilizando esterois e alcoóis como indicadores

The origin of the sedimentary organic matter in the Mundau-Manguaba estuarine system was evaluated through the distribution and composition of sterols, alcohols and ancillary data. The muddy sediments of the lagoons are enriched in organic matter, derived from a mixture of autochthonous and allochthonous inputs. Mundau exhibited moderate contamination by sewage, with coprostanol concentration as high as 4.4 µg g-1. The channels are characterized by sand and organic matter-poor sediments. The sediments from some rivers in the drainage basin accumulated organic matter derived only from terrestrial vegetation. Stanol/sterol ratios evidenced the preferential diagenesis of the autochthonous fraction of organic matter.

• Publication year

  2011

• Venue

  Química Nova

• Publication date

  Unknown publication date

• Fields of study

  Chemistry, Environmental Science

• Identifiers
  DOI 10.1590/S0100-40422011000700002
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• Some rivers in the drainage basin accumulated organic matter derived only from terrestrial vegetation, and stanol/sterol ratios indicate preferential diagenesis of the autochthonous fraction.

  Confidence 0.92

  mexicorea (qjvnbu8xg3) extractionAnonymous (12632b8b5f) review박진우 (dztg5apj7m) review폴라포 (zc8cpxex67) review
• Channel sediments are sandy and poor in organic matter.

  Confidence 0.96

  mexicorea (qjvnbu8xg3) extractionAnonymous (12632b8b5f) review박진우 (dztg5apj7m) review폴라포 (zc8cpxex67) review
• Mundaú shows moderate sewage contamination, with coprostanol reaching 4.4 µg g-1.

  Confidence 0.98

  mexicorea (qjvnbu8xg3) extractionAnonymous (12632b8b5f) review박진우 (dztg5apj7m) review폴라포 (zc8cpxex67) review
• Muddy lagoon sediments are enriched in organic matter from a mixture of autochthonous and allochthonous inputs.

  Confidence 0.95

  mexicorea (qjvnbu8xg3) extractionAnonymous (12632b8b5f) review박진우 (dztg5apj7m) review폴라포 (zc8cpxex67) review

• allochthonous organic matter

  organic matter

  Organic matter imported into the system from outside sources.

  Aliases: allochthonous inputs

  mexicorea (qjvnbu8xg3) extractionAnonymous (12632b8b5f) review박진우 (dztg5apj7m) review폴라포 (zc8cpxex67) review
• autochthonous organic matter

  organic matter

  Organic matter produced within the estuarine-lagoon system, such as from local biological production.

  Aliases: autochthonous fraction

  mexicorea (qjvnbu8xg3) extractionAnonymous (12632b8b5f) review박진우 (dztg5apj7m) review폴라포 (zc8cpxex67) review
• channels

  environment

  The channel environments within the estuarine system that were sampled for sediment composition.

  Aliases: channel sediments

  mexicorea (qjvnbu8xg3) extractionAnonymous (12632b8b5f) review박진우 (dztg5apj7m) review폴라포 (zc8cpxex67) review
• coprostanol

  biomarker

  A sterol used here as a marker of fecal or sewage-derived organic matter in sediments.

  mexicorea (qjvnbu8xg3) extractionAnonymous (12632b8b5f) review박진우 (dztg5apj7m) review폴라포 (zc8cpxex67) review
• muddy lagoon sediments

  sediment

  Fine-grained lagoonal sediment deposits sampled for organic matter characterization.

  Aliases: muddy sediments of the lagoons

  mexicorea (qjvnbu8xg3) extractionAnonymous (12632b8b5f) review박진우 (dztg5apj7m) review폴라포 (zc8cpxex67) review
• mundaú

  location

  The lagoon sector of the estuarine system discussed as a sampling location for sediment organic matter.

  Aliases: Mundau

  mexicorea (qjvnbu8xg3) extractionAnonymous (12632b8b5f) review박진우 (dztg5apj7m) review폴라포 (zc8cpxex67) review
• organic matter-poor sediments

  sediment

  Sediments with low organic matter content relative to the lagoon muds.

  Aliases: organic-matter-poor sediments

  mexicorea (qjvnbu8xg3) extractionAnonymous (12632b8b5f) review박진우 (dztg5apj7m) review폴라포 (zc8cpxex67) review
• rivers in the drainage basin

  location

  Fluvial sampling sites in the drainage basin used to trace terrestrial organic matter input.

  Aliases: some rivers in the drainage basin

  mexicorea (qjvnbu8xg3) extractionAnonymous (12632b8b5f) review박진우 (dztg5apj7m) review폴라포 (zc8cpxex67) review
• sand

  sediment texture

  The coarse sediment fraction characterizing the channel deposits.

  mexicorea (qjvnbu8xg3) extractionAnonymous (12632b8b5f) review박진우 (dztg5apj7m) review폴라포 (zc8cpxex67) review
• sewage contamination

  environmental condition

  Input of human wastewater assessed in the sediments using molecular markers such as coprostanol.

  Aliases: sewage pollution

  mexicorea (qjvnbu8xg3) extractionAnonymous (12632b8b5f) review박진우 (dztg5apj7m) review폴라포 (zc8cpxex67) review
• stanol/sterol ratios

  ratio

  A molecular ratio used to interpret organic matter diagenesis and source alteration.

  Aliases: stanol to sterol ratios

  mexicorea (qjvnbu8xg3) extractionAnonymous (12632b8b5f) review박진우 (dztg5apj7m) review폴라포 (zc8cpxex67) review
• terrestrial vegetation-derived organic matter

  organic matter

  Organic matter sourced from land plants and transported into the aquatic system.

  Aliases: terrestrial vegetation

  mexicorea (qjvnbu8xg3) extractionAnonymous (12632b8b5f) review박진우 (dztg5apj7m) review폴라포 (zc8cpxex67) review

• No references are available for this paper.

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