Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): Sparkle L. Malone; Jordan Barr; Jose D. Fuentes; Steven F. Oberbauer; Christina L. Staudhammer; Evelyn E. Gaiser; Gregory Starr
    Date: 2016
    Source: Wetlands. 36: 957-967.
    Publication Series: Scientific Journal (JRNL)
    Station: Rocky Mountain Research Station
    PDF: Download Publication  (953.0 KB)

    Description

    We analyzed the ecosystem effects of low-temperature events (<5 °C) over 4 years (2009-2012) in subtropical short and long hydroperiod freshwater marsh and mangrove forests within Everglades National Park. To evaluate changes in ecosystem productivity, we measured temporal patterns of CO2 and the normalized difference vegetation index over the study period. Both water levels and distance from the coast influenced the ecosystem response to low-temperature events. Photosynthetic capacity, or the maximum CO2 uptake rate, and sensitivity to low-temperature events were much higher in mangrove forest than in freshwater marsh ecosystems. During low-temperature events photosynthetic capacity was enhanced in freshwater marsh while it declined in mangrove forests, and respiration rates declined across Everglades ecosystems. While the long hydroperiod freshwater marsh gained 0.26 g CO2 m-2 during low-temperature events, the mangrove forest had the greatest C lost (7.11 g CO2 m-2 low-temperature event-1) followed by the short hydroperiod freshwater marsh (0.37 g CO2 m-2 low-temperature event-1). Results suggest that shifts in the frequency and intensity of weather anomalies with climate change can alter C assimilation rates in Everglades ecosystems through effects on the photosynthetic capacity of existing species, which might lead to changes in species composition and ecosystem productivity in the future.

    Publication Notes

    • You may send email to rmrspubrequest@fs.fed.us to request a hard copy of this publication.
    • (Please specify exactly which publication you are requesting and your mailing address.)
    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Malone, Sparkle L.; Barr, Jordan; Fuentes, Jose D.; Oberbauer, Steven F.; Staudhammer, Christina L.; Gaiser, Evelyn E.; Starr, Gregory. 2016. Sensitivity to low-temperature events: Implications for CO2 dynamics in subtropical coastal ecosystems. Wetlands. 36: 957-967.

    Cited

    Google Scholar

    Keywords

    low-temperature events, Everglades National Park, ecosystem sensitivity, CO2 fluxes, eddy covariance, ARIMA models

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/53487