Changes in Seagrass Cover on Success and Parmelia Banks, Western Australia Between 1965 and 1995

Kendrick, Gary A.; Hegge, Bruce; Wyllie, A.; Davidson, Alexander; Lord, D.

doi:10.1006/ecss.1999.0569

Cited by 86 publications

(73 citation statements)

References 20 publications

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“…The experiment was concluded at this time so actual recovery times are not available for these longer duration dredging scenarios. This lack of recovery was comparable to other seagrass studies where recovery was shown or predicted to be slow (Gonzalez-Correa et al, 2005;Kendrick et al, 2000) or not detected (Kirkman, 1985;Walker et al, 2006). A. griffithii subjected to more severe stress had no or few surviving leaf clusters, thus recovery was mostly dependent on recruitment via production of new stems from existing rhizome or establishment of seedlings.…”

Section: Timescales Of Recoverysupporting

confidence: 89%

Recovery from the impact of light reduction on the seagrass Amphibolis griffithii, insights for dredging management

McMahon

Lavery

Mulligan³

2011

Marine Pollution Bulletin

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A large-scale, manipulative experiment was conducted to examine the extent and rate of recovery of meadows of the temperate Australian seagrass, Amphibolis griffithii to different light-reduction scenarios typical of dredging operations, and to identify potential indicators of recovery from light reduction stress. Shade cloth was used to mimic different intensities, durations and start times of light reduction, and then was removed to assess the recovery. The meadow could recover from 3 months of light stress (5-18% ambient) following 10 months re-exposure to ambient light, even when up to 72% of leaf biomass was lost, much faster recovery rates than has previously been observed for large seagrasses. However, when the meadow had been shaded for 6-9 months and more than 82% of leaf biomass was lost, no recovery was detected up to 23 months after the light stress had ceased, consistent with other studies. Five potential indicators of recovery were recommended.Recovery of seagrass from light reduction 2

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Section: Timescales Of Recoverysupporting

confidence: 89%

Recovery from the impact of light reduction on the seagrass Amphibolis griffithii, insights for dredging management

McMahon

Lavery

Mulligan³

2011

Marine Pollution Bulletin

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“…Parmelia Bank is a shallow (<10 m), unconsolidated carbonate sand bank approximately 6 km south-west of Fremantle. Common seagrass species occurring on Parmelia Bank include Posidonia australis, P. coriacea, P. sinuosa, Amphibolis griffithii, Heterozostera tasmanica and Halophila ovalis (Kendrick et al 2000). The western boundary of the Bank is a chain of limestone reefs and islands.…”

Section: Methodsmentioning

confidence: 99%

Reefs as contributors to diversity of epiphytic macroalgae assemblages in seagrass meadows

Elven¹,

Lavery²,

Kendrick

2004

Mar. Ecol. Prog. Ser.

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The links between macroalgae-covered reefs and diversity and biomass of epiphytic algae assemblages in adjacent seagrass meadows were investigated. Algae assemblages were sampled in 3 habitats: on-reef, seagrass meadow near-reef (< 20 m from reef), and seagrass meadow distant-from-reef (> 3000 m), off the coast of Fremantle, Western Australia. We interpreted differences among these habitats as evidence that proximity to reefs influences epiphytic algae assemblages. Propagules in the water column, epiphytes recruiting onto artificial seagrass units (ASU) and assemblages on natural Posidonia sinuosa were sampled in each habitat. For propagules, ASU and natural P. sinuosa, there were significant differences in the structure of algae assemblages near and distant from reefs, while assemblages near reefs tended to resemble those found on reefs. Multivariate analysis (ANOSIM) confirmed that propagule assemblages near reefs and on reefs were similar, but those distant from reefs differed from those on reefs. Near-reef habitat recorded the highest total number of algal taxa growing on ASU (53), followed by on-reef (44) and distant-from-reef (37) habitats. ANOSIM again confirmed that assemblages at on-and near-reef sites were not significantly different, but both differed from those at sites distant from reef. We identified 59 species of algal epiphytes growing on mature P. sinuosa leaves at near-reef and distant-from-reef sites, with only 19 species being common to both habitats, and multivariate analyses were suggestive of differences in assemblage structure. Biomass was only recorded for the ASU epiphyte assemblages and was greatest in the near-reef habitat (0.63 ± 0.11 g shoot ) followed by the on-reef habitat and the distantfrom-reef habitat (0.18 ± 0.04 and 0.11 ± 0.01 g shoot -1, respectively). Our results demonstrate that diversity and biomass of macroalgae epiphytes in seagrass ecosystems differ between habitats of varying proximity to reefs.

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“…Tropical reef lagoon-associated benthic communities are structurally and functionally complex (Biber et al 2004) and thus particularly susceptible to environmental changes (Fonseca et al 2000, Kendrick et al 2000, Eyre & Ferguson 2002. The typical lagoon community response to environmental disturbances (e.g.…”

Section: Abstract: Organic Matter · Primary Producer · Caribbean Reementioning

confidence: 99%

Organic matter release by the dominant primary producers in a Caribbean reef lagoon: implication for in situ O2 availability

Haas¹,

Jantzen²,

Naumann³

et al. 2010

Mar. Ecol. Prog. Ser.

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Changes in Seagrass Cover on Success and Parmelia Banks, Western Australia Between 1965 and 1995

Cited by 86 publications

References 20 publications

Recovery from the impact of light reduction on the seagrass Amphibolis griffithii, insights for dredging management

Recovery from the impact of light reduction on the seagrass Amphibolis griffithii, insights for dredging management

Reefs as contributors to diversity of epiphytic macroalgae assemblages in seagrass meadows

Organic matter release by the dominant primary producers in a Caribbean reef lagoon: implication for in situ O2 availability

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