Faunal utilization of constructed intertidal oyster (Crassostrea rivularis) reef in the Yangtze River estuary, China

Quan, Weimin; Zhu, Jun; Ni, Yizhao; Shi, Liyan; Ya-qu, Chen

doi:10.1016/j.ecoleng.2009.06.001

Cited by 42 publications

(38 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The global loss of native oyster populations has prompted extensive efforts to restore these economically-and ecologically-important bivalves. Oyster restoration techniques vary, but are generally designed to provide habitat (e.g., thin layer of shell or three-dimensional artificial reefs) where habitat is limiting, or subsidies of juvenile oysters (e.g., hatcherybased stock enhancement) where recruitment is limiting (Coen and Luckenbach, 2000;Laing et al, 2006;Quan et al, 2009;Theuerkauf et al, 2015). Recent efforts to restore eastern oysters (the focal species of this work; hereafter referred to as oysters) along the U.S. Atlantic and Gulf coasts have focused on constructing three-dimensional artificial reefs to provide hard substrate for oyster settlement (Powers et al, 2009;Schulte et al, 2009;Puckett and Eggleston, 2012;La Peyre et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Integrating Larval Dispersal, Permitting, and Logistical Factors Within a Validated Habitat Suitability Index for Oyster Restoration

et al. 2018

View full text Add to dashboard Cite

Habitat suitability index (HSI) models are increasingly used to guide ecological restoration. Successful restoration is a byproduct of several factors, including physical and biological processes, as well as permitting and logistical considerations. Rarely are factors from all of these categories included in HSI models, despite their combined relevance to common restoration goals such as population persistence. We developed a Geographic Information System (GIS)-based HSI for restoring persistent high-relief subtidal oyster (Crassostrea virginica) reefs protected from harvest (i.e., sanctuaries) in Pamlico Sound, North Carolina, USA. Expert stakeholder input identified 17 factors to include in the HSI. Factors primarily represented physical (e.g., salinity) and biological (e.g., larval dispersal) processes relevant to oyster restoration, but also included several relevant permitting (e.g., presence of seagrasses) and logistical (e.g., distance to restoration material stockpile sites) considerations. We validated the model with multiple years of oyster density data from existing sanctuaries, and compared HSI output with distributions of oyster reefs from the late 1800's. Of the 17 factors included in the model, stakeholders identified four factors-salinity, larval export from existing oyster sanctuaries, larval import to existing sanctuaries, and dissolved oxygen-most critical to oyster sanctuary site selection. The HSI model provided a quantitative scale over which a vast water body (∼6,000 km 2 ) was narrowed down by 95% to a much smaller suite of optimal (top 1% HSI) and suitable (top 5% HSI) locations for oyster restoration. Optimal and suitable restoration locations were clustered in northeast and southwest Pamlico Sound. Oyster density in existing sanctuaries, normalized for time since reef restoration, was a positive exponential function of HSI, providing validation for the model. Only a small portion (10-20%) of historical reef locations overlapped with current, model-predicted optimal and suitable restoration habitat. We contend that stronger linkages between larval connectivity, landscape ecology, stakeholder engagement and spatial planning within HSI models can provide a more holistic, unified approach to restoration.

show abstract

Section: Introductionmentioning

confidence: 99%

Integrating Larval Dispersal, Permitting, and Logistical Factors Within a Validated Habitat Suitability Index for Oyster Restoration

et al. 2018

View full text Add to dashboard Cite

show abstract

“…따라서 굴 은 암반조간대에 가입하는 저서동물의 생존에 유리하게 작용하여 생물의 다양성을 증가시키기 때문에 (Rodney and Paynter 2006), 암반조간대 생태계의 초기 회복 단계 에서 중요한 역할을 한다 (Diederich 2005;Luckenbach et al 2005;Volety et al 2009;Quan et al 2009Quan et al , 2012Quan et al , 2013.…”

Section: 서 론unclassified

Comparison of Recruitment and Growth Patterns of Pacific Oysters (Crassostrea gigas) between a Natural Rocky Shore and Farming Substrate Within an Oil Spill Contaminated Area of Korea

이혜미

윤건탁²

2014

Ocean and Polar Research

View full text Add to dashboard Cite

: Macrobenthic biodiversity in the rocky intertidal areas of the Tae-an region, Republic of Korea, has decreased since the Hebei Spirit oil spill in December 2007. We aimed to investigate ecological roles of Pacific oyster (Crassostrea gigas) because recruitment and growth of oysters are critical to the recovery of damaged rocky shore ecosystem. We surveyed two sites monthly: natural rocky substrate and farming substrate, from July 2012 to January 2013 to identify and compare the changes in macrobenthic fauna. The abundance of young oysters was higher at the natural site. On the other hand, the mean height of oyster on the farming substrate was more than twice as great. The abundance of oyster at the natural site increased until October and then continuously decreased until end of study period. However, the abundance of oyster at the farming site constantly decreased from the beginning of study period. These different growth patterns might be attributable to spatial competition between oyster and a barnacle species (Balanus albicostatus) and environmental factors. At the natural site, physical stress factors including dramatic temperature changes and desiccation a few of the major factors limiting growth during aerial exposure. In addition, motile macrobenthos could be detrimental to oysters because they interrupt filter-feeding activities and hence hamper the growth of oysters. We show the higher recruitment of oysters at the natural site and healthy growth in the farming substrate are due to complicated differences in physical and biological stress factors.

show abstract

“…Creation of an intertidal oyster reef was initiated in April 2004 through transplanting hatchery seed oyster Crassostrea ariakensis to the intertidal artificial concrete modular (dikes and groins) as part of the Deepwater Navigation Channel Regulation Project (DNCRP) in the Yangtze River estuary (see Quan et al 2006Quan et al , 2007bQuan et al , 2009b. The hatchery oyster was initially called Crassostrea rivularis, but the most recent classification (Wang et al 2004) determined this to be the Asian oyster C. ariakensis.…”

Section: Introductionmentioning

confidence: 98%

Determination of Trophic Transfer at a Created Intertidal Oyster (Crassostrea ariakensis) Reef in the Yangtze River Estuary Using Stable Isotope Analyses

Quan

Humphries

Shi

et al. 2011

Estuaries and Coasts

Self Cite

View full text Add to dashboard Cite

Oysters can create reefs that provide habitat for associated species resulting in elevated resident abundances, lower mortality rates, and increased growth and survivorship compared to other estuarine habitats. However, there is a need to quantify trophic relationships and transfer at created oyster reefs to provide a better understanding of their potential in creating suitable nekton habitat. Stable isotope analyses (δ 13 C and δ 15 N) were conducted to examine the organic matter sources and potential energy flow pathways at a created intertidal oyster (Crassostrea ariakensis; hereinafter, oyster) reef and adjacent salt marsh in the Yangtze River estuary, China. The δ 13 C values of most reef-associated species (22 of 37) were intermediate between those of suspended particle organic matter (POM) and benthic microalgae (BMI), indicating that both POM and BMI are the major organic matter sources at the created oyster reef. The sessile and motile macrofauna colonizing the reef make up the main prey of transient nekton (e.g., spotted sea bass, Asian paddle crab, and green mud crab), thus suggesting that the associated community was most important in supporting higher trophic levels as opposed to the direct dietary subsidy of oysters. The created oyster reef consistently supported higher trophic levels than the adjacent salt marsh habitat due to the dominance of secondary consumers. These results indicate that through the provision of habitat for associated species, created oyster reefs provide suitable habitat and support a higher average trophic level than adjacent salt marsh in the Yangtze River estuary.

show abstract

Faunal utilization of constructed intertidal oyster (Crassostrea rivularis) reef in the Yangtze River estuary, China

Cited by 42 publications

References 29 publications

Integrating Larval Dispersal, Permitting, and Logistical Factors Within a Validated Habitat Suitability Index for Oyster Restoration

Integrating Larval Dispersal, Permitting, and Logistical Factors Within a Validated Habitat Suitability Index for Oyster Restoration

Comparison of Recruitment and Growth Patterns of Pacific Oysters (Crassostrea gigas) between a Natural Rocky Shore and Farming Substrate Within an Oil Spill Contaminated Area of Korea

Determination of Trophic Transfer at a Created Intertidal Oyster (Crassostrea ariakensis) Reef in the Yangtze River Estuary Using Stable Isotope Analyses

Contact Info

Product

Resources

About