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Benthic Microalgal Community Structure, Primary Productivity, and Fiddler Crab (Leptuca pugilator) Grazing in an Estuarine Salt Panne.

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Název: Benthic Microalgal Community Structure, Primary Productivity, and Fiddler Crab (Leptuca pugilator) Grazing in an Estuarine Salt Panne.
Autoři: Pinckney, James L.
Zdroj: Estuaries & Coasts; Jul2023, Vol. 46 Issue 5, p1316-1325, 10p
Témata: FIDDLER crabs, COMMUNITIES, GRAZING, SALT, SPRING, HABITATS, PRIMARY productivity (Biology)
Geografický termín: SOUTH Carolina
Abstrakt: Salt pannes are marsh features in the supratidal zone that are devoid of macrophytic vegetation. Although these habitats appear barren, benthic microalgae (BMA) inhabit the sediments and are potentially important primary producers. In addition, salt pannes are habitats for dense accumulations of sand fiddler crabs (Leptuca pugilator; Bosc 1802). The purpose of this study was to determine the temporal changes in BMA biomass, community composition, and net primary productivity (NPP) for a supratidal salt panne and quantify sand fiddler crab grazing on BMA. The impact of crab grazing on BMA abundance in surface sediments was determined by measuring chl a concentrations in ungrazed and grazed sediments. BMA biomass peaked to a high of 16 µg chl a g sediment−1 in June and July, suggesting growth in the spring followed by a small decline in the warmer summer months. The BMA community was primarily composed of benthic diatoms, with lesser amounts of cyanobacteria. NPP increased to a median of 0.51 mmol O2 m−2 h−1 (6.12 mg C m−2 h−1) in July. In comparison with other BMA habitats in this estuary, NPP and biomass for salt pannes was lower than the other 5 habitat types (tall and short Spartina, intertidal mud and sandflats, phytoplankton, and submerged sediments). Sand fiddler crabs do not appear to consume significant amounts of BMA during grazing in salt pannes. This first ever study of BMA NPP demonstrates that estuarine salt pannes are likely a small contributor to ecosystem NPP. [ABSTRACT FROM AUTHOR]
Copyright of Estuaries & Coasts is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Benthic Microalgal Community Structure, Primary Productivity, and Fiddler Crab (Leptuca pugilator) Grazing in an Estuarine Salt Panne.
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  Data: Estuaries & Coasts; Jul2023, Vol. 46 Issue 5, p1316-1325, 10p
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  Data: Salt pannes are marsh features in the supratidal zone that are devoid of macrophytic vegetation. Although these habitats appear barren, benthic microalgae (BMA) inhabit the sediments and are potentially important primary producers. In addition, salt pannes are habitats for dense accumulations of sand fiddler crabs (Leptuca pugilator; Bosc 1802). The purpose of this study was to determine the temporal changes in BMA biomass, community composition, and net primary productivity (NPP) for a supratidal salt panne and quantify sand fiddler crab grazing on BMA. The impact of crab grazing on BMA abundance in surface sediments was determined by measuring chl a concentrations in ungrazed and grazed sediments. BMA biomass peaked to a high of 16 µg chl a g sediment<superscript>−1</superscript> in June and July, suggesting growth in the spring followed by a small decline in the warmer summer months. The BMA community was primarily composed of benthic diatoms, with lesser amounts of cyanobacteria. NPP increased to a median of 0.51 mmol O<subscript>2</subscript> m<superscript>−2</superscript> h<superscript>−1</superscript> (6.12 mg C m<superscript>−2</superscript> h<superscript>−1</superscript>) in July. In comparison with other BMA habitats in this estuary, NPP and biomass for salt pannes was lower than the other 5 habitat types (tall and short Spartina, intertidal mud and sandflats, phytoplankton, and submerged sediments). Sand fiddler crabs do not appear to consume significant amounts of BMA during grazing in salt pannes. This first ever study of BMA NPP demonstrates that estuarine salt pannes are likely a small contributor to ecosystem NPP. [ABSTRACT FROM AUTHOR]
– Name: Abstract
  Label:
  Group: Ab
  Data: <i>Copyright of Estuaries & Coasts is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Text: English
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      – SubjectFull: SOUTH Carolina
        Type: general
      – SubjectFull: FIDDLER crabs
        Type: general
      – SubjectFull: COMMUNITIES
        Type: general
      – SubjectFull: GRAZING
        Type: general
      – SubjectFull: SALT
        Type: general
      – SubjectFull: SPRING
        Type: general
      – SubjectFull: HABITATS
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      – SubjectFull: PRIMARY productivity (Biology)
        Type: general
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      – TitleFull: Benthic Microalgal Community Structure, Primary Productivity, and Fiddler Crab (Leptuca pugilator) Grazing in an Estuarine Salt Panne.
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              Text: Jul2023
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