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Pore water chemistry of an overwash mangrove island
| Title: | Pore water chemistry of an overwash mangrove island. |
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| Name(s): |
Carlson, Paul R. Yarbro, Laura A. Zimmermann, Carl F. Montgomery, John R. Harbor Branch Oceanographic Institute |
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| Type of Resource: | text | |
| Genre: | Article | |
| Date Issued: | 1983 | |
| Publisher: | Florida Academy of Sciences. | |
| Place of Publication: | Orlando, FL | |
| Physical Form: | ||
| Extent: | 12 p. | |
| Language(s): | English | |
| Identifier: | FA00007481 (IID) | |
| Note(s): |
Variations in concentrations of pore water constituents in sediments beneath
mangrove commtmities in the Indian River lagoon are related to the physiology of the mangroves
and tidal inundation regimes of the sediments. Both Rhizophora mangle and Avicennia germinans
increase concentrations of sulfate and chloride in pore water by partial exclusion of salts
from water taken up by transpiration. Sulfate is excluded by the plants to a greater extent than
chloride, elevating pore water sulfate: chlorinity ratios. Changes in pore water sulfide, iron,
phosphate, and nitrate concentrations appear to be coupled to seasonal and shorter term variations
in tidal inundation frequency. Differences in sulfide concentrations of the 2 zones suggest
that heterotrophic microbial activity is greater in Rhizophora sediments than in Avicennia
sediments. Total rates of microbial metabolism may be similar in both zones if microorganisms in
Avicennia sediments utilize a wider range of terminal electron acceptors than are available in
Rhizophora sediments. Large variations in the dissolved Fe concentrations of Avicennia pore
water may mean that iron serves as an important terminal electron acceptor for heterotrophic
microorganisms. Florida Atlantic University. Harbor Branch Oceanographic Institute contribution 282 This manuscript is an author version with the final publication available and may be cited as: Carlson, P. R., Yarbro, L. A., Zimmermann, C. F., & Montgomery, J. R. (1983). Pore water chemistry of an overwash mangrove island. Florida Scientist, 46(3-4), 239-249. |
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| Subject(s): |
Pore water--Florida--Indian River Mangroves Sediment |
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| Persistent Link to This Record: | http://purl.flvc.org/fau/fd/FA00007481 | |
| Host Institution: | FAU |
