Trophic linkage of a temperate intertidal macrobenthic food web under opportunistic macroalgal blooms: A stable isotope approach

Park, Hyun Je; Han, Eunah; Lee, Young Jae; Kang, Chang‐Keun

doi:10.1016/j.marpolbul.2016.07.026

Cited by 20 publications

(6 citation statements)

References 47 publications

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“…The δ 13 C values of most consumers at all of the sites were very similar to those of EPOM, which suggests a high contribution of phytoplankton-derived organic matter in their diets and very little contribution of RPOM or P. australis. This isotopic uniformity of macrobenthic consumers, regardless of feeding style or habitat, is not consistent with those previously reported from the western and southern coasts of the Korean peninsula (Kang et al 2003(Kang et al , 2015Choy et al 2008;Park et al 2015aPark et al , 2016. Generally, macrobenthic consumers within estuarine ecosystems have diverse dietary origins with a large variety of primary producers and organic matter sources from terrestrial, estuarine, and marine systems (McLusky 1989).…”

Section: Spatial and Seasonal Variability In Food Web Structure In The Diked And Natural Systemscontrasting

confidence: 59%

Trophic Structures of Two Contrasting Estuarine Ecosystems With and without a Dike on the Temperate Coast of Korea as Determined by Stable Isotopes

Park

Kwak

Lee

et al. 2019

Estuaries and Coasts

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To evaluate the modification of carbon flow in estuarine systems by a dike construction, we compared the trophic structures of the macrobenthic food webs in two contrasting estuaries, one with and one without a dike, on the western and southern coasts of Korea, by measuring the δ 13 C and δ 15 N values of subtidal macrobenthic consumers. The isotopic values of most organic matter sources were similar between the two estuaries, but there was a different pattern in the isotopic spatial variability between them. For the consumer δ 13 C values in the diked estuary, there were no significant spatial differences among sites and the isotopic niche widths were much narrower than those in the dike-free estuary. Moreover, the indices of community-wide metrics were smaller in the diked estuary than in the dike-free estuary. These results suggest a lower trophic diversity of macrobenthic consumers with their increased trophic redundancy in the diked estuary. These differences between the dike and dike-free estuaries might be explained by the decrease of benthic producers and then their lower food availabilities for consumers resulting from the presence of the dike. Our findings provide evidence that dike construction and subsequent alteration of hydrologic and circulation processes may lead to modification of the trophic structure of estuarine macrobenthic communities.

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Section: Spatial and Seasonal Variability In Food Web Structure In The Diked And Natural Systemscontrasting

confidence: 59%

Trophic Structures of Two Contrasting Estuarine Ecosystems With and without a Dike on the Temperate Coast of Korea as Determined by Stable Isotopes

Park

Kwak

Lee

et al. 2019

Estuaries and Coasts

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“…Jones & Pinn, ), and hence their effects might be expected to be, and indeed are, less severe. Further, such less severe blooms may even in some respects be advantageous to the benthos; for example, by the provision of additional food materials (Jones & Pinn, ; Park, Han, Lee, & Kang, ).…”

Section: Discussionmentioning

confidence: 99%

Context dependency in the effect of Ulva‐induced loss of seagrass cover on estuarine macrobenthic abundance and biodiversity

Barnes

2018

Aquatic Conservation

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1 An extensive area of seagrass covering the shore of part of the South African estuary ranked highest in overall national conservation and biodiversity importance (the Knysna estuarine bay) was killed by a series of seasonal green-tidal blankets of Ulva starting in the late austral summer of 2015, leaving bare muddy sediment. An earlier (2011) survey of then seagrass macrobenthic assemblages at 27 stations along over 1 km of that shore was exactly repeated in 2018 after this event.2 After loss of seagrass, intertidal macrofauna became significantly less speciose (1:0.61), spatially and systematically more uniform (1:1.30 and 1:1.63), but more (not the usual less) abundant (0.62:1). Assemblage composition also changed, with polychaete numbers (small nereidids, spionids, fabriciids and an endemic paraonid) increasing from <50% of total macrofaunal individuals to >90% (although cirratulids decreased), whereas small malacostracan crustaceans (except the amphipod Grandidierella sp.) and microgastropods diminished to insignificant levelsmicrogastropods for reasons possibly unconnected with the green tide.3 Comparison with areas not vegetated in 2014, however, indicated that although macrofaunal abundance was greater in the 2018 Ulva-induced bare areas, levels of per unit area biodiversity (number of species, species and taxonomic diversity per station) were comparable. This suggests that the effect of local loss of seagrass cover is context dependent, particularly with regard to pre-existing local seagrass versus adjacent bare-sediment differentials, and does not necessarily lead to any "degraded" state.4 Decreased local importance of small malacostracans may severely impact the region's usage by the adult and juvenile fish for which it is an important nursery and feeding ground.

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“…presence. On the western coast of Korea, Park et al (2016) showed that blooming green macroalgae support an intertidal macrobenthic food web with a certain variability depending on both feeding strategies of consumers and resource availability. From field experiments with varying macroalgal mat thickness (0.5, 1.5 and 4 cm) over eight weeks, Green and Fong (2016) quantified the effects on macrofauna on a Californian lagoon mudflat.…”

Section: J O U R N a L P R E -P R O O Fmentioning

confidence: 99%

Spatio-temporal patterns in stable isotope composition of a benthic intertidal food web reveal limited influence from salt marsh vegetation and green tide

Sturbois

Riera

Desroy

et al. 2022

Marine Environmental Research

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Trophic linkage of a temperate intertidal macrobenthic food web under opportunistic macroalgal blooms: A stable isotope approach

Cited by 20 publications

References 47 publications

Trophic Structures of Two Contrasting Estuarine Ecosystems With and without a Dike on the Temperate Coast of Korea as Determined by Stable Isotopes

Trophic Structures of Two Contrasting Estuarine Ecosystems With and without a Dike on the Temperate Coast of Korea as Determined by Stable Isotopes

Context dependency in the effect of Ulva‐induced loss of seagrass cover on estuarine macrobenthic abundance and biodiversity

Spatio-temporal patterns in stable isotope composition of a benthic intertidal food web reveal limited influence from salt marsh vegetation and green tide

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