Setting seagrass depth, coverage, and light targets for the Indian River Lagoon system, Florida

Steward, Joel S.; Virnstein, Robert W.; Morris, Lori J.; Lowe, Edgar F.

doi:10.1007/bf02696020

Cited by 61 publications

(64 citation statements)

References 32 publications

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“…The IRL system is shallower (depths of 1.5-3 m) than the coastal systems used in previous studies by Moses et al [25] and Mishra and Mishra [22]. The Azov Sea and Delaware Bay used by Moses [24,27] had average depths of 9 m and 2.5-10 m, respectably [32] and 6-30 m in the Chesapeake Bay used by Mishra and Mishra [33].…”

Section: Meris Data Acquisition and Preprocessingmentioning

confidence: 60%

“…Thirty four of these sites are located on the IRL and another 22 on the tributaries to the IRL. TMDL is a pollution reduction and regulatory method used in an effort to identify the maximum amount of nutrients, metals, and organic compounds a water body can receive while still meeting water quality standards [27]. At "the historically normal conditions," the IRL has an average Chl a concentration range from 6.2 to 16.4 µg·L −1 [26], with seasonal algal blooms at Chl a levels reaching 25 µg·L .…”

Section: Methodsmentioning

confidence: 99%

“…At "the historically normal conditions," the IRL has an average Chl a concentration range from 6.2 to 16.4 µg·L −1 [26], with seasonal algal blooms at Chl a levels reaching 25 µg·L . The long-term field water quality monitoring data at the multiple sites, however, were not sufficient to show spatially continuous information because the surface water area of the IRL is 750 km 2 , meaning each monthly sampling site is used to assess an area of roughly 18 km 2 [27]. Without spatially continuous visualization it was difficult to determine the spatial pattern of the bloom initiation, movement, and diminishment through the IRL.…”

Section: Methodsmentioning

confidence: 99%

“…The Indian River Lagoon (IRL) is a 252 km estuarine system along the east coast of central Florida, USA (UTM 17N 28.568°N, 80.757°W; Figure 1) with the average depths ranging from 0.8 to1.8 m and widths varying from 0.5 to 5 km [27]. The IRL provides critical habitat for several dozen commercially and recreationally important fisheries valued at one billion dollars a year [28] and has one of the most diverse seagrass communities within the United States [29].…”

Section: Study Areamentioning

confidence: 99%

“…The water quality data were collected the first week of every month. Salinity and temperature were measured by a HACH Hydrolab MS5 (Loveland, CO); and Chl a, TSS, and turbidity were measured in accordance with Environmental Protection Agency (EPA) methods and laboratory protocols [27].…”

Section: In-situ Water Quality and Ancillary Datamentioning

confidence: 99%

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Monitoring of the 2011 Super Algal Bloom in Indian River Lagoon, FL, USA, Using MERIS

2015

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During the spring of 2011 an unprecedented "Super" algal bloom formed in the Indian River Lagoon (IRL), with Chlorophyll a (Chl a) concentrations over eight times the historical mean in some areas and lasted for seven months across the IRL. The European Space Agency's MEdium Resolution Imaging Spectrometer (MERIS) platform provided multispectral data at 665 and 708 nm, which was used to quantify the phytoplankton Chl a by fluorescence while minimizing the effects of other water column constituents. The three objectives were to: (1) calibrate and validate two Chl a algorithms using all available MERIS data of the IRL from 2002 to 2012; (2) determine the accuracy of the algorithms estimation of Chl a before, during, and after the 2011 super bloom; and (3) map the 2011 algal bloom using the Chl a algorithm that was proven to be effective in other similar estuaries. The chosen algorithm, Normalized Difference Chlorophyll Index (NDCI), was positively correlated with the in-situ measurements, with an R 2 value of 0.798. While there was a significant (62.9 ± 25%) underestimation of Chl a using MERIS NDCI, the underestimation appears to be consistent across the data and mostly in the estimations of lower concentrations, suggesting that a qualitative or ratio analysis is still valid. Analysis of the application of the NDCI processed MERIS data provided additional insights that the in-situ

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Section: Meris Data Acquisition and Preprocessingmentioning

confidence: 60%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Study Areamentioning

confidence: 99%

Section: In-situ Water Quality and Ancillary Datamentioning

confidence: 99%

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Monitoring of the 2011 Super Algal Bloom in Indian River Lagoon, FL, USA, Using MERIS

2015

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The influence of seagrass donor source on small‐scale transplant resilience

McDonald

Christiaen

Major

et al. 2020

Aquatic Conservation

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1. Concern for conservation of seagrass habitat has prompted international transplantation-style restoration efforts. A recent review of these restoration efforts has highlighted the low success associated with small-scale restorations, yet scaling up transplantation effort may be too costly for underfunded regions. Small-scale transplant survival can be enhanced with alleviation of two underlying issues: restoration site selection and donor site selection. 2. To investigate appropriate donor source selection, donor site environmental influence on seagrass (Halodule wrightii) transplant survival was examined by transplanting donor cores from two environmentally disparate sites to a transplantation site with limited environmental uncertainties. Donor sites were chosen to represent either end of a benthic light gradient (high versus low) to elucidate seagrass resilience to transplantation stress, with respect to donor site conditions. 3. After total loss of the first trial, a second trial was conducted with stabilizing mesh placed over transplants to reduce stingray bioturbation. The second trial resulted in 100% survival of high light transplants after 12 months and moderate survival (30-60%) of low light transplants for the first six months. 4. At 18 months, the second trial ended after sediment burial from a hurricane. One year post-burial, a patch of H. wrightii recovered at the high light transplant site; after six years the patch expanded to approximately 74 m 2 , an area 37-fold larger than originally planted. 5. Results from this transplant experiment provide evidence that donor environment plays a role in transplant resilience. The transplants sourced from high light had 47% greater leaf area per shoot, were more resistant to transplantation stress, and recovered following an extreme event relative to low light transplants. Therefore, selection of donor plants with more resilience features, a transplantation site with limited environmental uncertainties, and adaptive intervention can enhance seagrass resilience at a small planting scale.

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The impacts of the 2004 hurricanes on hydrology, water quality, and seagrass in the Central Indian River Lagoon, Florida

Steward

Virnstein

Lasi

et al. 2006

Estuaries and Coasts

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Setting seagrass depth, coverage, and light targets for the Indian River Lagoon system, Florida

Cited by 61 publications

References 32 publications

Monitoring of the 2011 Super Algal Bloom in Indian River Lagoon, FL, USA, Using MERIS

Monitoring of the 2011 Super Algal Bloom in Indian River Lagoon, FL, USA, Using MERIS

The influence of seagrass donor source on small‐scale transplant resilience

The impacts of the 2004 hurricanes on hydrology, water quality, and seagrass in the Central Indian River Lagoon, Florida

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