Effect of oyster aquaculture on seagrass Zostera marina at the estuarine landscape scale in Willapa Bay, Washington (USA)

Dumbauld, Brett R.; McCoy, Lee M.

doi:10.3354/aei00131

Cited by 45 publications

(16 citation statements)

References 105 publications

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“…About 17% of the total intertidal area (3,876 of 22,699 ha) is used for commercial oyster culture, yielding a significant portion of the total oyster production in the United States; ground culture of oysters contributes over 95% of the total oyster production in Willapa Bay (Feldman et al 2000). Both the native eelgrass Z. marina and the nonnative Japanese eelgrass Z. japonica are present, covering a roughly equivalent portion (21.7% or 4,934 ha) of the estuary's intertidal area (Dumbauld and McCoy 2015). Zostera japonica has dramatically expanded its range over the last two decades and may have also facilitated the expansion of Z. marina in some areas (Bando 2006;B.…”

Section: Methodsmentioning

confidence: 99%

“…As a disturbance, oyster aquaculture directly influences eelgrass via competition and displacement Wagner et al 2012) and via harvest activities (Wisehart et al 2007;Dumbauld et al 2009;Tallis et al 2009). However, eelgrass is present in areas where aquaculture occurs, and all three habitats (eelgrass, oyster ground culture, and open mudflat) are interspersed over the intertidal landscape (Dumbauld and McCoy 2015). Seagrasses are declining in many estuaries 1106 worldwide (Orth et al 2006;Waycott et al 2009) and at several locations along the U.S. West Coast, but this is not the case for Willapa Bay and several other estuaries where oyster aquaculture is currently practiced Dumbauld and McCoy 2015).…”

Section: Aquaculture As a Disturbance To Estuarine Habitat For Juvenimentioning

confidence: 99%

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Association of Juvenile Salmon and Estuarine Fish with Intertidal Seagrass and Oyster Aquaculture Habitats in a Northeast Pacific Estuary

2015

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Structured estuarine habitats, such as salt marshes, seagrass beds, and oyster reefs, are recognized as critical nurseries for juvenile fish and crustaceans. Estuarine habitat usage by fish, including juvenile Pacific salmon Oncorhynchus spp., was characterized by sampling with a modified tow net in Willapa Bay, Washington, where 20% of the intertidal area is utilized for shellfish aquaculture and thus is difficult to sample with conventional gear. Our goal was to compare fish use of relatively undisturbed habitats (open mudflat, seagrass, and channel habitats) with the use of nearby oyster culture habitat. Although many species showed significant temporal and spatial trends within the estuary, only Shiner Perch Cymatogaster aggregata exhibited a significant association with habitat. Juveniles of three salmonid species exhibited few associations with the low intertidal habitats over which they were captured or in the prey types they consumed there. Chinook Salmon O. tshawytscha, likely hatchery-released oceantype fish, were the most common salmonid captured, and they utilized low intertidal areas throughout the summer as their mean size increased from 85 to 100 mm FL. Diets consumed by these larger juvenile Chinook Salmon were not associated with benthic habitat but instead consisted primarily of (1) insects from nearby marsh or terrestrial habitats and (2) planktonic prey, like decapod larvae and tunicate larvaceans. Juvenile Coho Salmon O. kisutch and Chum Salmon O. keta were captured earlier (April and May) and fed on a slightly different suite of prey taxa, which were also primarily pelagic rather than associated with the intertidal benthos. Our findings suggest that in this relatively shallow coastal estuary, the role of benthic habitat is not closely linked to its value as a source of food for large juvenile salmon out-migrants utilizing the low intertidal areas where aquaculture occurs.Estuaries support a high diversity and density of fish and invertebrates (Beck et al. 2003;Gillanders et al. 2003;Able 2005). Within estuaries, structured habitats (e.g., marshes, seagrass, and other submerged aquatic vegetation [SAV]) provide trophic resources and refuge from predators, thus allowing small fish and invertebrates to reach greater density and diversity relative to those in unstructured habitats (e.g., open mudflat; Deegan et al.

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Section: Methodsmentioning

confidence: 99%

Section: Aquaculture As a Disturbance To Estuarine Habitat For Juvenimentioning

confidence: 99%

Association of Juvenile Salmon and Estuarine Fish with Intertidal Seagrass and Oyster Aquaculture Habitats in a Northeast Pacific Estuary

2015

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“…; Justino et al . ); landscape modification (Bentley ; Dumbauld & McCoy ); and negative effects on fisheries (Natale et al . ; Granada et al .…”

Section: Introductionmentioning

confidence: 99%

“…However, there are a number of problems associated with this activity, notably concerning environmental issues (Martinez-Porchas & Martinez-Cordova 2012). (Focardi et al 2005;Crab et al 2009;Martinez-Porchas & Martinez-Cordova 2012); biological contamination due to the introduction of non-native species (Krko sek et al 2007;Molnar et al 2008); chemical contamination (Sapkota et al 2008;Justino et al 2016); landscape modification (Bentley 2015;Dumbauld & McCoy 2015); and negative effects on fisheries (Natale et al 2013;Granada et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Trends in aquaculture sciences: from now to use of nanotechnology for disease control

Luis

Campos

Oliveira

et al. 2017

Reviews in Aquaculture

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Aquaculture is increasingly important in global food production. Consequently, the control of diseases in aquaculture is essential, due to the potential environmental impacts, notably in terms of the states of health of freshwater bodies and the oceans. In this study, we review the possible uses of different management systems, highlighting essential oils and novel nanotechnological strategies, for the control of diseases in aquaculture.

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“…The native seagrass Z. marina has specifically been identified by Washington State as a biological means to ameliorate acidification (Washington State Blue Ribbon Panel on Ocean Acidification Ocean Acidification., 2012). In addition, both Z. marina and Z. japonica have strong habitat-associations with organisms vulnerable to OA, such as bivalves (Ferraro and Cole, 2012;Mach et al, 2014;Dumbauld and McCoy, 2015). The non-native Z. japonica has colonized previously unvegetated mudflats and is found in the mid to upper intertidal zone, whereas Z. marina has a distribution extending from the lower intertidal to shallow subtidal region; species overlap between Z. marina and Z. japonica can occur in the lower intertidal zone on flat shorelines (Harrison, 1982;Thom, 1990;Kaldy, 2006;Ruesink et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Moderate Increase in TCO2 Enhances Photosynthesis of Seagrass Zostera japonica, but Not Zostera marina: Implications for Acidification Mitigation

2017

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Photosynthesis and respiration are vital biological processes that shape the diurnal variability of carbonate chemistry in nearshore waters, presumably ameliorating (daytime) or exacerbating (nighttime) short-term acidification events, which are expected to increase in severity with ocean acidification (OA). Biogenic habitats such as seagrass beds have the capacity to reduce CO 2 concentration and potentially provide refugia from OA. Further, some seagrasses have been shown to increase their photosynthetic rate in response to enriched total CO 2 (TCO 2 ). Therefore, the ability of seagrass to mitigate OA may increase as concentrations of TCO 2 increase. In this study, we exposed native Zostera marina and non-native Zostera japonica seagrasses from Padilla Bay, WA (USA) to various levels of irradiance and TCO 2 . Our results indicate that the average maximum net photosynthetic rate (P max ) for Z. japonica as a function of irradiance and TCO 2 was 3x greater than Z. marina when standardized to chlorophyll (360 ± 33 µmol TCO 2 mg chl −1 h −1 and 113 ± 10 µmol TCO 2 mg chl −1 h −1 , respectively). Additionally, Z. japonica increased its P max ∼50% when TCO 2 increased from ∼1,770 to 2,051 µmol TCO 2 kg −1 . In contrast, Z. marina did not display an increase in P max with higher TCO 2 , possibly due to the variance of photosynthetic rates at saturating irradiance within TCO 2 treatments (coefficient of variation: 30-60%) relative to the range of TCO 2 tested. Our results suggest that Z. japonica can affect the OA mitigation potential of seagrass beds, and its contribution may increase relative to Z. marina as oceanic TCO 2 rises. Further, we extended our empirical results to incorporate various biomass to water volume ratios in order to conceptualize how these additional attributes affect changes in carbonate chemistry. Estimates show that the change in TCO 2 via photosynthetic carbon uptake as modeled in this study can produce positive diurnal changes in pH and aragonite saturation state that are on the same order of magnitude as those estimated for whole seagrass systems. Based on our results, we predict that seagrasses Z. marina and Z. japonica both have the potential to produce short-term changes in carbonate chemistry, thus offsetting anthropogenic acidification when irradiance is saturating.

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Effect of oyster aquaculture on seagrass Zostera marina at the estuarine landscape scale in Willapa Bay, Washington (USA)

Cited by 45 publications

References 105 publications

Association of Juvenile Salmon and Estuarine Fish with Intertidal Seagrass and Oyster Aquaculture Habitats in a Northeast Pacific Estuary

Association of Juvenile Salmon and Estuarine Fish with Intertidal Seagrass and Oyster Aquaculture Habitats in a Northeast Pacific Estuary

Trends in aquaculture sciences: from now to use of nanotechnology for disease control

Moderate Increase in TCO2 Enhances Photosynthesis of Seagrass Zostera japonica, but Not Zostera marina: Implications for Acidification Mitigation

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