Understanding the conditionality of ecosystem services: The effect of tidal flat morphology and oyster reef characteristics on sediment stabilization by oyster reefs

2018 ◽  
Vol 112 ◽  
pp. 89-95 ◽  
Author(s):  
João N. Salvador de Paiva ◽  
Brenda Walles ◽  
Tom Ysebaert ◽  
Tjeerd J. Bouma
Keyword(s):  
Ecosystem Services ◽  
Tidal Flat ◽  
Oyster Reef ◽  
Oyster Reefs ◽  
Sediment Stabilization

scholarly journals Seascape context modifies how fish respond to restored oyster reef structures

2019 ◽  
Vol 76 (4) ◽  
pp. 1131-1139 ◽  
Author(s):  
Ben L Gilby ◽  
Andrew D Olds ◽  
Christopher J Henderson ◽  
Nicholas L Ortodossi ◽  
Rod M Connolly ◽  
...  
Keyword(s):  
Species Richness ◽  
Fish Species ◽  
Fish Assemblages ◽  
Oyster Reef ◽  
Pivotal Role ◽  
Oyster Reefs ◽  
Total Abundance ◽  
Fish Recruitment ◽  
Abundance And Diversity ◽  
Species Specific

Abstract The seascape context of coastal ecosystems plays a pivotal role in shaping patterns in fish recruitment, abundance, and diversity. It might also be a principal determinant in structuring the recruitment of fish assemblages to restored habitats, but the trajectories of these relationships require further testing. In this study, we surveyed fish assemblages from 14 restored oyster reefs and 14 control sites in the Noosa River, Queensland, Australia, that differed in the presence or absence of seagrass within 500 m, over four periods using baited cameras. Fish assemblages at oyster reefs differed from those at control sites, with higher species richness (1.4 times) and more individuals of taxa that are harvested by fishers (1.8 times). The presence or absence of seagrass nearby affected the abundance of a key harvestable fish species (yellowfin bream Acanthopagrus australis) on oyster reefs, but not the overall composition of fish assemblages, species richness, or the total abundance of harvestable fishes overall. These findings highlight the importance of considering species-specific patterns in seascape utilization when selecting restoration sites and setting restoration goals, and suggest that the effects of restoration on fish assemblages might be optimized by focusing efforts in prime positions in coastal seascapes.

New Ostracoda species from an Upper Cretaceous oyster reef, northern Gulf Coastal Plain, U.S.A.

1994 ◽  
Vol 68 (6) ◽  
pp. 1321-1335 ◽  
Author(s):  
T. Markham Puckett
Keyword(s):  
New Species ◽  
Late Cretaceous ◽  
Coastal Plain ◽  
Upper Cretaceous ◽  
Oyster Reef ◽  
Oyster Reefs ◽  
Total Thickness ◽  
Topographic Feature ◽  
Gulf Coastal Plain ◽  
Eutaw Formation

This paper describes new species of Ostracoda from Late Cretaceous (late Santonian) oyster reefs of the Eutaw Formation of eastern Alabama. The reefs are composed almost exclusively of Ostrea cretacea Morton, with rarer occurrences of the oysters Exogyra upatoiensis Stephenson and Lopha ucheensis (Stephenson) and the bivalve Anomia preolmstedi Stephenson. Total thickness of the reefs is about 30 m, and the reefs are a major topographic feature across most of Macon and Russell Counties, Alabama, a distance of about 60 km. The reefs are interpreted to have been backbarrier sediments deposited under brackish conditions.Eight species of ostracodes are identified, including five new species described herein. The fauna is typically well preserved, and includes males, females, and juveniles. New species include Haplocytheridea? eutawensis, Antibythocypris dimorphicus, A. nephotrema, Brachycythere asymmetrica, and Eocytheropteron mutafoveata. Also discussed and illustrated are Cytherella tuberculifera Alexander, Haplocytheridea renfroensis renfroensis Crane, and Fissocarinocythere gapensis (Alexander).

Habitat value of Sydney rock oyster (Saccostrea glomerata) reefs on soft sediments

2020 ◽  
Vol 71 (7) ◽  
pp. 771 ◽  
Author(s):  
I. M. McLeod ◽  
L. Boström-Einarsson ◽  
C. Creighton ◽  
B. D'Anastasi ◽  
B. Diggles ◽  
...  
Keyword(s):  
Coastal Waters ◽  
Oyster Reef ◽  
Economic Value ◽  
Biomass Productivity ◽  
Macroinvertebrate Communities ◽  
Oyster Reefs ◽  
Reef Restoration ◽  
Habitat Value ◽  
Rock Oyster ◽  
Saccostrea Glomerata

Estimates of the ecological and economic value of ecosystems can provide important information for the prioritisation of conservation and restoration actions. Oyster reefs that were once common in temperate coastal waters have now been largely degraded or lost. Oyster reefs provide a suite of ecological services, including habitat and a food supply for a range of other species. In Australia, there is growing interest in oyster reef restoration, but there are knowledge gaps with regard to their structure and habitat value. Here, we describe the structure of eight remnant Sydney rock oyster (Saccostrea glomerata) reefs and estimate the density, biomass, productivity and composition of mobile macroinvertebrate and infaunal communities associated with them. The oyster reefs had a distinct assemblage of macroinvertebrates, with fivefold higher density of larger (≥2mm) macroinvertebrates, fivefold higher biomass and almost fivefold higher productivity, than that of adjacent bare sediments. The productivity of infaunal communities was twice as high under oyster reefs than in adjacent bare sediments. Therefore, S. glomerata reef restoration is likely to provide important habitat for macroinvertebrate communities and boost local secondary production.

Relationship of biological communities to habitat structure on the largest remnant flat oyster reef (Ostrea angasi) in Australia

2020 ◽  
Vol 71 (8) ◽  
pp. 972 ◽  
Author(s):  
C. Crawford ◽  
G. Edgar ◽  
C. L. Gillies ◽  
G. Heller-Wagner
Keyword(s):  
Oyster Reef ◽  
Three Dimensional ◽  
Soft Sediment ◽  
Oyster Reefs ◽  
Biological Communities ◽  
Reef Restoration ◽  
Naturally Occurring ◽  
Faunal Abundance ◽  
North Eastern ◽  
Relationship Of

Oyster reef restoration is a growing field in Australia, yet formal descriptions of associated biological communities for reefs created by native flat oysters (Ostrea angasi) do not currently exist. Native flat oysters once formed extensive and complex three-dimensional habitats in bays and estuaries across southern Australia until indiscriminate fishing, sedimentation and disease led to their near disappearance. To determine the diversity and abundance on naturally occurring oyster reefs, we sampled four sites on the last known naturally occurring oyster reef ecosystem, which resides in north-eastern Tasmania, and compared them to the surrounding soft sediment regions. Assemblages were related to environmental variables to determine whether consistent patterns were present. Oyster reef sites contained three times the faunal abundance of the surrounding soft sediment regions. Abundance among echinoderms, arthropods, molluscs and fish was much elevated, whereas annelids showed similar levels of abundance but differed in terms of species composition. These results show that oyster reefs do support abundant and diverse assemblages, emphasising the probable loss of community-level biodiversity associated with their historical decline around southern Australia.

scholarly journals A Resident Fish Guild as a Higher Trophic Level Indicator of Oyster Reef Restoration Success

2021 ◽  
Vol 13 (23) ◽  
pp. 13004
Author(s):  
Dakota M. Lewis ◽  
Katie E. Durham ◽  
Linda J. Walters ◽  
Geoffrey S. Cook
Keyword(s):  
Reef Fish ◽  
Trophic Level ◽  
Oyster Reef ◽  
Foundation Species ◽  
Oyster Reefs ◽  
Anthropogenic Pressures ◽  
Level Indicator ◽  
Reef Restoration ◽  
Restoration Success ◽  
Oyster Restoration

Eastern oysters (Crassostrea virginica) are critical foundation species in estuarine waters, but due to a combination of natural and anthropogenic pressures, oyster abundance has declined. Restoring oyster reefs and monitoring restoration success often focuses on oyster metrics, but relatively infrequently, responses of higher trophic level species and the production of related ecosystem services are accounted for. To address this, we compare the response of a resident reef fish guild (gobies, blennies, toadfish) to standard metrics of oyster restoration success. Using lift nets and seines, natural and restored reefs were monitored over a two-year period within Mosquito Lagoon, Florida, USA. Standard metrics are indicative of restoration success; live oyster density and reef thickness increased in restored reefs after 12 and 24 months. Combined, live oyster density and reef thickness were the best predictors of annual resident reef fish abundance compared to water quality metrics. These results suggest that the benefits of restoring oyster reef habitat are conferred to broader components of the food web, with benefits accruing to reef resident fishes that are a key trophic linkage between lower trophic level foundation species and higher trophic level predators inhabiting coastal ecosystems.

scholarly journals Intertidal seaweeds from North Atlantic Patagonian coasts, Argentina

Check List ◽  
2015 ◽  
Vol 11 (5) ◽  
pp. 1739 ◽  
Author(s):  
María Emilia Croce ◽  
Maria Cecilia Gauna ◽  
Carolina Fernández ◽  
Elisa Parodi
Keyword(s):  
Functional Groups ◽  
North Atlantic ◽  
Tidal Flat ◽  
Buenos Aires ◽  
Incident Light ◽  
Ulva Prolifera ◽  
Oyster Reefs ◽  
Substrate Type ◽  
Ulva Intestinalis ◽  
Filamentous Macroalgae

The coasts located between 39°S and 41°S in the Argentinean biogeographic province have been described by impoverished seaweed assemblages, however the floristic information about this region is sparse. The aim of this study was to survey the intertidal seaweeds inhabiting three sites in the oceanographic system “El Rincon” (Buenos Aires, Argentina). A total of 42 taxa were identified with a dominance of Rhodophyta species. The sandstone outcrops (SO) had 29 taxa, whereas both the tidal flat (TF) and oyster reefs (OR) had 11 taxa. The estuarial species Ulva intestinalis and Ulva prolifera were recorded in TF, whereas calcified macroalgae were only found in SO. The differences in richness and composition of seaweed assemblages were associated with substrate type, wave exposure, incident light and salinity. These differences were also evidenced by a dissimilar number of functional groups, which was higher in SO with a dominance of filamentous macroalgae.

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