The Role of Zooplankton Grazing and Nutrient Loading in the Occurrence of Harmful Cyanobacterial Blooms in Florida Bay, USA

Goleski, Jennifer A.; Koch, Florian; Marcoval, M. Alejandra; Wall, Charles C.; Jochem, Frank J.; Peterson, Bradley J.; Gobler, Christopher J.

doi:10.1007/s12237-010-9294-1

Cited by 37 publications

(21 citation statements)

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“…Cyano bacterial blooms in Florida Bay, perhaps combined with other environmental factors, seem to have disrupted pelagic (Goleski et al 2010) and possibly benthic (Peterson et al 2006) grazing in Florida Bay. Peterson et al (2006) found that sponge mortality in the north-central region of Florida Bay increased water column turnover time by sponge filtration from 3 d to 15 d, and this region of Florida Bay has experienced the most dense and persistent cyanobacterial blooms (Phlips et al 1999, Goleski et al 2010. To date, no study has considered how in situ changes in cyanobacteria blooms affect sponge populations in Florida Bay.…”

Section: Resale or Republication Not Permitted Without Written Consenmentioning

confidence: 99%

“…This correlation analysis was performed once with all sites and time-points pooled, and again with the data separated by time-point to avoid temporal pseudoreplication. A 'bloom threshold' of 350 × 10 3 cyanobacterial cells ml −1 (Phlips et al 1999, Goleski et al 2010) was used to classify each site at each time point as 'bloom' or 'non-bloom.' Cyanobacteria densities during intervals between time-points were modeled as simple exponential growth or decline, and these modeled densities were used to classify the intervals between time-points as 'bloom' or 'non-bloom.…”

Section: Measurements Of Cyanobacteriamentioning

confidence: 99%

“…An understanding of the bottom-up and top-down controls on Synechococcus blooms in Florida Bay will be crucial to successful ecosystem management and may provide clues to aid management of other coastal lagoons. Anthropogenic nutrient loading has been a problem in several areas of south Florida (Lapointe et al 2004), but a clear pattern of nutrient loading that promotes Synechococcus blooms in Florida Bay has not emerged (Phlips et al 1999, Glibert et al 2004, Goleski et al 2010. In shallow, well-mixed systems such as Florida Bay, benthic suspension feeders such as bivalves or sponges can exert top-down control on phytoplankton (Officer et al 1982).…”

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“…Since no study to date has examined the water pumping behavior of S. vesparium on longer time scales, for the purposes of this calculation, sponges were assumed to pump continuously. Sponge grazing rates were then compared to the cyanobacteria growth rates as measured by Goleski et al (2010) concurrently at all sites and time-points during this study to estimate net cyanobacterial growth or decline per basin and per time point as a function of sponge grazing and cyanobacterial cellular growth. …”

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Responses of loggerhead sponges Spechiospongia vesparium during harmful cyanobacterial blooms in a sub-tropical lagoon

Wall¹,

Rodgers²,

Gobler³

et al. 2012

Mar. Ecol. Prog. Ser.

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Shallow, coastal lagoons are vulnerable to eutrophication and harmful algal blooms, often due to the loss of benthic suspension feeders. Florida Bay, USA, is a sub-tropical lagoon that has suffered from a series of ecological disturbances, including cyanobacterial blooms, loss of seagrass habitat, and widespread sponge mortality. A field study was executed at sites across Florida Bay to investigate effects of cyanobacterial blooms of the genus Synechococcus on the suspensionfeeding loggerhead sponge Spheciospongia vesparium. In situ measurements of loggerhead sponge survival, water pumping rates, and particle retention were made over the course of a year under both bloom and non-bloom conditions and for naturally-occurring and transplanted sponges. The mortality of transplanted loggerhead sponges significantly increased following cyanobacterial blooms. Sponge water pumping rates, particle retention, and filtration rates were depressed in areas where cyanobacteria blooms were present. When loggerhead sponge community filtration rates were compared with cyanobacteria intrinsic growth rates, sites with low abundances of sponges had persistent, dense blooms and harbored positive net growth rates for cyanobacteria (0.78 to 1.45 d −1 ). In contrast, sites with high abundances of sponges had few or no blooms and net growth rates for cyanobacteria that were slow or negative (−0.17 to 0.24 d −1 ). This suggests that the loss of filtration from sponge mortality in Florida Bay has contributed to the persistence of algal blooms. Restoration of benthic suspension feeders such as sponges could be an important management tool to mitigate algal blooms in shallow coastal lagoons, although survival of transplanted populations will likely require concurrent improvement of water quality by other means since blooms inhibit sponge pumping, particle retention, and filtration.KEY WORDS: Florida Bay · Sponges · Spheciospongia vesparia · Loggerhead sponge · Cyanobacteria · Synechococcus · Harmful algal bloom Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 451: [31][32][33][34][35][36][37][38][39][40][41][42][43] 2012 2001), the loss of benthic suspension feeders from such a system likely represents a more significant loss of top-down control than for deeper, well-flushed ecosystems.Florida Bay, USA, is a shallow, sub-tropical lagoon between mainland Florida and the Florida Keys; it is the largest estuary in Florida, valuable for recreation and fisheries, and adjacent to the sensitive habitats of the Florida Keys National Marine Sanctuary and Everglades National Park. Since the late 1980s, Florida Bay has been affected by a series of ecological disruptions, including sponge die-offs (Butler et al. 1995), blooms of the cyanobacteria Synechococcus spp. (Phlips et al. 1999), and seagrass mortality (Robblee et al. 1991). The root cause of these disturbances may be linked to human alterations of the freshwater flow in the Everglades, which is upstream of Florida Bay (Phlips e...

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Section: Resale or Republication Not Permitted Without Written Consenmentioning

confidence: 99%

Section: Measurements Of Cyanobacteriamentioning

confidence: 99%

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confidence: 99%

mentioning

confidence: 99%

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Responses of loggerhead sponges Spechiospongia vesparium during harmful cyanobacterial blooms in a sub-tropical lagoon

Wall¹,

Rodgers²,

Gobler³

et al. 2012

Mar. Ecol. Prog. Ser.

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show abstract

“…Various physicochemical factors, biotic effects and hydro-meteorological characteristics have been assumed to be main reasons for cyanobacterial blooms (Paerl et al, 2001;Jin and Wang, 2006;Jiang et al, 2008;Goleski et al, 2010;Wang et al, 2011a). Many models have been developed to predict the dynamics of cyanobacterial blooms.…”

Section: Introductionmentioning

confidence: 99%