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  1. Article: Restoration objectives create surface carbon cycle trade‐offs in coastal habitats

    Oberle, Brad / Breithaupt, Joshua / McTigue, Angela M. / Stryker, Race / Cladas, Misty / Raulerson, Gary / Young, Darcy F.

    Restoration ecology. 2022 Apr., v. 30, no. 4

    2022  

    Abstract: Coastal habitats are important and imperiled. To mitigate climate change impacts, carbon (C) sequestration has joined established restoration objectives, including habitat diversity, public access, and native vegetation. Changing topography, maintaining ... ...

    Abstract Coastal habitats are important and imperiled. To mitigate climate change impacts, carbon (C) sequestration has joined established restoration objectives, including habitat diversity, public access, and native vegetation. Changing topography, maintaining trails, and removing invasive plants may influence coastal C production and retention in different ways depending on how each activity influences the stabilization of organic matter in surface sediments. We quantified variation in litter and surface soil dynamics within and between coastal parks that varied in age from prerestoration to nearly 20 years old in Manatee County, Florida. Older parks had deeper soil organic horizons with higher levels of soil moisture and respiration, indicating that restoration sequesters soil C despite increases in microbial efficiency. However, variation within parks indicated that detrital C dynamics change depending on local management objectives. Relative to unmanaged locations, restored wetlands, including mangroves, salt marshes, and freshwater ponds, had soil organic horizons nearly 20 cm deeper, with high litter stabilization rates despite less litter mass and shorter projected soil sample C mineralization. In contrast, public access features like trails and kayak launches were associated with increased surface CO₂ efflux and marginally reduced soil organic horizon depth. Removing invasives had little impact on detrital carbon pools and fluxes. Incorporating detrital C dynamics improved a multivariate model for variation in C pool sizes across sites. Overall, our results suggest that management objectives influence the C production and retention capacity of restored coastal habitats with restored uplands and public access points storing less C than relatively inaccessible wetlands.
    Keywords carbon ; carbon dioxide ; climate change ; ecological restoration ; freshwater ; habitats ; indigenous species ; invasive species ; mineralization ; multivariate analysis ; organic horizons ; organic matter ; soil water ; topography ; Florida
    Language English
    Dates of publication 2022-04
    Publishing place Wiley Periodicals, Inc.
    Document type Article
    Note JOURNAL ARTICLE
    ZDB-ID 914746-9
    ISSN 1526-100X ; 1061-2971
    ISSN (online) 1526-100X
    ISSN 1061-2971
    DOI 10.1111/rec.13563
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 6111: Show issues

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  2. Article: Ship wakes and their potential shoreline impact in Tampa Bay

    Meyers, Steven D. / Luther, Mark E. / Ringuet, Stephanie / Raulerson, Gary / Sherwood, Ed / Conrad, Katie / Basili, Gianfranco

    Elsevier Ltd Ocean & coastal management. 2021 Oct. 01, v. 211

    2021  

    Abstract: Ship wakes generated by vessels moving through ecologically sensitive areas, or near poorly-protected infrastructure, can negatively impact these systems. This is especially true in regions hosting large seaports. Ship wakes in Tampa Bay, Florida, were ... ...

    Abstract Ship wakes generated by vessels moving through ecologically sensitive areas, or near poorly-protected infrastructure, can negatively impact these systems. This is especially true in regions hosting large seaports. Ship wakes in Tampa Bay, Florida, were calculated during two time periods using vessel movement data reported through the Automatic Identification System (AIS). The first period was for the years 2015–2017 using data from a government database. The second was during part of 2018 obtained by local monitoring. Only vessels operating at low Froude numbers were examined. Wake heights were estimated from each AIS record using an empirical equation and partitioned by functional vessel class. The largest estimated wakes were produced by the Passenger class. Cargo class vessels had the largest number of ships estimated to produce high wakes. Egmont Key, a long-eroding barrier island at the mouth of the Bay, was potentially subjected to the highest number of ship wakes and the highest cumulative wake energy. Differences in vessel representation in the two sets of AIS data yielded different distributions of wake energy by vessel class. Some strategies for managing wake energy are discussed.
    Keywords coastal zone management ; databases ; energy ; equations ; infrastructure ; islands ; shorelines ; Florida
    Language English
    Dates of publication 2021-1001
    Publishing place Elsevier Ltd
    Document type Article
    ISSN 0964-5691
    DOI 10.1016/j.ocecoaman.2021.105749
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  3. Article ; Online: Providing a framework for seagrass mapping in United States coastal ecosystems using high spatial resolution satellite imagery.

    Coffer, Megan M / Graybill, David D / Whitman, Peter J / Schaeffer, Blake A / Salls, Wilson B / Zimmerman, Richard C / Hill, Victoria / Lebrasse, Marie Cindy / Li, Jiang / Keith, Darryl J / Kaldy, James / Colarusso, Phil / Raulerson, Gary / Ward, David / Kenworthy, W Judson

    Journal of environmental management

    2023  Volume 337, Page(s) 117669

    Abstract: Seagrasses have been widely recognized for their ecosystem services, but traditional seagrass monitoring approaches emphasizing ground and aerial observations are costly, time-consuming, and lack standardization across datasets. This study leveraged ... ...

    Abstract Seagrasses have been widely recognized for their ecosystem services, but traditional seagrass monitoring approaches emphasizing ground and aerial observations are costly, time-consuming, and lack standardization across datasets. This study leveraged satellite imagery from Maxar's WorldView-2 and WorldView-3 high spatial resolution, commercial satellite platforms to provide a consistent classification approach for monitoring seagrass at eleven study areas across the continental United States, representing geographically, ecologically, and climatically diverse regions. A single satellite image was selected at each of the eleven study areas to correspond temporally to reference data representing seagrass coverage and was classified into four general classes: land, seagrass, no seagrass, and no data. Satellite-derived seagrass coverage was then compared to reference data using either balanced agreement, the Mann-Whitney U test, or the Kruskal-Wallis test, depending on the format of the reference data used for comparison. Balanced agreement ranged from 58% to 86%, with better agreement between reference- and satellite-indicated seagrass absence (specificity ranged from 88% to 100%) than between reference- and satellite-indicated seagrass presence (sensitivity ranged from 17% to 73%). Results of the Mann-Whitney U and Kruskal-Wallis tests demonstrated that satellite-indicated seagrass percentage cover had moderate to large correlations with reference-indicated seagrass percentage cover, indicative of moderate to strong agreement between datasets. Satellite classification performed best in areas of dense, continuous seagrass compared to areas of sparse, discontinuous seagrass and provided a suitable spatial representation of seagrass distribution within each study area. This study demonstrates that the same methods can be applied across scenes spanning varying seagrass bioregions, atmospheric conditions, and optical water types, which is a significant step toward developing a consistent, operational approach for mapping seagrass coverage at the national and global scales. Accompanying this manuscript are instructional videos describing the processing workflow, including data acquisition, data processing, and satellite image classification. These instructional videos may serve as a management tool to complement field- and aerial-based mapping efforts for monitoring seagrass ecosystems.
    MeSH term(s) United States ; Ecosystem ; Satellite Imagery ; Environmental Monitoring/methods
    Language English
    Publishing date 2023-03-24
    Publishing country England
    Document type Journal Article
    ZDB-ID 184882-3
    ISSN 1095-8630 ; 0301-4797
    ISSN (online) 1095-8630
    ISSN 0301-4797
    DOI 10.1016/j.jenvman.2023.117669
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    In stock of ZB MED Bonn / Germany

    Z 7556: Show issues

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  4. Article ; Online: Initial estuarine response to inorganic nutrient inputs from a legacy mining facility adjacent to Tampa Bay, Florida

    Beck, Marcus W. / Altieri, Andrew / Angelini, Christine / Burke, Maya C. / Chen, Jing / Chin, Diana W. / Gardiner, Jayne / Hu, Chuanmin / Hubbard, Katherine A. / Liu, Yonggang / Lopez, Cary / Medina, Miles / Morrison, Elise / Phlips, Edward J. / Raulerson, Gary E. / Scolaro, Sheila / Sherwood, Edward T. / Tomasko, David / Weisberg, Robert H. /
    Whalen, Joseph

    Marine Pollution Bulletin. 2022 May, v. 178 p.113598-

    2022  

    Abstract: Legacy mining facilities pose significant risks to aquatic resources. From March 30th to April 9th, 2021, 814 million liters of phosphate mining wastewater and marine dredge water from the Piney Point facility were released into lower Tampa Bay (Florida, ...

    Abstract Legacy mining facilities pose significant risks to aquatic resources. From March 30th to April 9th, 2021, 814 million liters of phosphate mining wastewater and marine dredge water from the Piney Point facility were released into lower Tampa Bay (Florida, USA). This resulted in an estimated addition of 186 metric tons of total nitrogen, exceeding typical annual external nitrogen load estimates to lower Tampa Bay in a matter of days. An initial phytoplankton bloom (non-harmful diatoms) was first observed in April. Filamentous cyanobacteria blooms (Dapis spp.) peaked in June, followed by a bloom of the red tide organism Karenia brevis. Reported fish kills tracked K. brevis concentrations, prompting cleanup of over 1600 metric tons of dead fish. Seagrasses had minimal changes over the study period. By comparing these results to baseline environmental monitoring data, we demonstrate adverse water quality changes in response to abnormally high and rapidly delivered nitrogen loads.
    Keywords Karenia brevis ; algal blooms ; estuaries ; fish ; marine pollution ; nitrogen ; phosphates ; seagrasses ; total nitrogen ; wastewater ; water quality ; Florida ; Macroalgae ; Phosphate mining ; Piney Point ; Seagrass ; Tampa Bay
    Language English
    Dates of publication 2022-05
    Publishing place Elsevier Ltd
    Document type Article ; Online
    Note Use and reproduction
    ZDB-ID 2001296-2
    ISSN 1879-3363 ; 0025-326X
    ISSN (online) 1879-3363
    ISSN 0025-326X
    DOI 10.1016/j.marpolbul.2022.113598
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  5. Article ; Online: Initial estuarine response to inorganic nutrient inputs from a legacy mining facility adjacent to Tampa Bay, Florida.

    Beck, Marcus W / Altieri, Andrew / Angelini, Christine / Burke, Maya C / Chen, Jing / Chin, Diana W / Gardiner, Jayne / Hu, Chuanmin / Hubbard, Katherine A / Liu, Yonggang / Lopez, Cary / Medina, Miles / Morrison, Elise / Phlips, Edward J / Raulerson, Gary E / Scolaro, Sheila / Sherwood, Edward T / Tomasko, David / Weisberg, Robert H /
    Whalen, Joseph

    Marine pollution bulletin

    2022  Volume 178, Page(s) 113598

    Abstract: Legacy mining facilities pose significant risks to aquatic resources. From March 30th to April 9th, 2021, 814 million liters of phosphate mining wastewater and marine dredge water from the Piney Point facility were released into lower Tampa Bay (Florida, ...

    Abstract Legacy mining facilities pose significant risks to aquatic resources. From March 30th to April 9th, 2021, 814 million liters of phosphate mining wastewater and marine dredge water from the Piney Point facility were released into lower Tampa Bay (Florida, USA). This resulted in an estimated addition of 186 metric tons of total nitrogen, exceeding typical annual external nitrogen load estimates to lower Tampa Bay in a matter of days. An initial phytoplankton bloom (non-harmful diatoms) was first observed in April. Filamentous cyanobacteria blooms (Dapis spp.) peaked in June, followed by a bloom of the red tide organism Karenia brevis. Reported fish kills tracked K. brevis concentrations, prompting cleanup of over 1600 metric tons of dead fish. Seagrasses had minimal changes over the study period. By comparing these results to baseline environmental monitoring data, we demonstrate adverse water quality changes in response to abnormally high and rapidly delivered nitrogen loads.
    MeSH term(s) Animals ; Bays ; Cyanobacteria ; Florida ; Harmful Algal Bloom ; Mining ; Nitrogen/analysis ; Nutrients ; Water Pollution
    Chemical Substances Nitrogen (N762921K75)
    Language English
    Publishing date 2022-03-30
    Publishing country England
    Document type Journal Article
    ZDB-ID 2001296-2
    ISSN 1879-3363 ; 0025-326X
    ISSN (online) 1879-3363
    ISSN 0025-326X
    DOI 10.1016/j.marpolbul.2022.113598
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