Factors structuring the macrobenthos community in tidal algal reefs

Yu, Hsin-Yu; Huang, Sijun; Lin, Hsing‐Juh

doi:10.1016/j.marenvres.2020.105119

Cited by 9 publications

(6 citation statements)

References 57 publications

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“…The observed values of c ranged from approximately 0 to 500 mg/l, which were much higher than those in other coral reef environments. The elevated and highly variable c may be one factor that makes the unique algae reef environment (Yu et al, 2020 ). We also found that c was highly correlated with the wave orbital velocity, , and the wave-induced bed shear stress, .…”

Section: Discussionmentioning

confidence: 99%

“…Some findings support that the total transport of sediment in coastal zones mostly depends on the wave mode (Buschmann et al, 2012 ; Pomeroy et al, 2018 ). Sediment suspension and hydrodynamics should both be considered together from the perspective of ecosystem recovery and restoration in coastal areas (Duarte et al, 2015 ; Fatahi Nafchi et al, 2021 ; Yu et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

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Real-time and long-term monitoring of waves and suspended sediment concentrations over an intertidal algal reef

Huang

2022

Environ Monit Assess

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Suspended sediment concentration (c) has been considered a critical environmental factor in reef habitats; however, the values and variations of c are not evident in a unique reef mainly created by crustose coralline algal concretions compared to abundant studies in coral reefs. The results of real-time and long-term monitoring of waves and c over the intertidal algal reef are reported because of the construction of an offshore industrial harbor near the reef. The real-time monitoring systems were based on techniques, including optical backscatter sensors (OBSs) for measuring c, pressure sensors for measuring waves, data loggers, and wireless networks for data transmission. The instruments sampled every hour and ran continuously and automatically for years. The OBS measurement was compared and validated with biweekly water sampling. A good correlation between the results of the two methods was observed. Nevertheless, more calibrations of OBSs in different seasons reduced the variance between the two methods over a year-long timescale. The year-long data showed a remarkable seasonal variation in c. The average c was approximately 140 mg/l during the winter season, while it was only approximately 70 mg/l during the summer season. The observed c was higher than that in other coral reef environments; the elevated and highly variable c, ranging from approximately 0 to 500 mg/l, may be one factor that creates the unique algae reef environment. The year-long measurement of waves and c showed that the variation in c was mainly due to the variation in waves in different seasons and was well correlated with the wave-induced bed shear stress. The real-time and long-term data measured by the system will aid in better understanding and providing useful environmental data for accessing future environmental changes and protecting reef habitats.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Real-time and long-term monitoring of waves and suspended sediment concentrations over an intertidal algal reef

Huang

2022

Environ Monit Assess

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“…B. exarata was introduced to the YR estuary in 2001 (Leng et al, 2013), which indicated that this species adapted to local conditions. Sediment rugosity and hydrodynamics are two main driving factors that structure macrobenthos communities (Yu et al, 2020). The aboveground biomass and litter production of S. alterniflora and S. glauca plants can slow water currents and waves, and thus decrease water velocities (Yang et al, 2012), which could promote fine particle sedimentation from the water column to the surface sediments (Quan et al, 2016) and have positive effects on mass loss and nutrient release (Yin et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

“…According to the literature (e.g., Neira et al, 2006;Brusati and Grosholz, 2007;Xie and Gao, 2013;Gao et al, 2014), finer sediments were favourable for macrobenthos adaptation to intertidal habitats, such as C. cingulata, M. iridescens and M. japonicus (Table A2). Furthermore, detritivorous polychaetes are suitable for habitats with higher rugosity, such as SA, because of their capacity to intercept the increased organic matter that is available in the water (Yu et al, 2020). The higher water velocities that result from shorter plants in SG habitats may promote the recruitment and growth of some crustaceans compared with slower-velocity habitats such as SA due to the flow rate effects on the delivery of planktonic larvae to the substrate (Leonard et al, 1998), which is in agreement with the study by Graham and Sebens (1996), who found that the larvae of barnacles were well mixed in the water column at higher flow rates.…”

Section: Discussionmentioning

confidence: 99%

Comparison of macrobenthic communities between the invasive Spartina alterniflora and native Suaeda glauca habitats in the Yellow River Delta

Han

Wang

et al. 2022

Wetlands Ecol Manage

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Salt marsh habitats in estuaries play important roles in species compositions and macrobenthos abundances. Here, the macrobenthic communities and environmental conditions in two habitats, which are dominated by the invasive species Spartina alterniflora (SA) and native species Suaeda glauca (SG), in the Yellow River Delta were studied to assess habitat function. The seasonal data showed that the species diversity and abundance of macrobenthos in the SA habitat were much higher than those in the SG habitat. The functional groups in the former showed significant seasonal changes and shifted from polychaeta (68%) in spring to mollusca (97%) in autumn, but in the latter, it was dominated by crustacea (63-86%), mollusca (1-25%) and polychaeta (9-13%), and only mollusca exhibited obvious seasonal changes. The sediments in the SA habitat contained richer organic matter contents and exhibited higher Chl-a concentrations than those in the SG habitat, although the grain sizes were coarser in the SA habitat. At the seasonal scale, macrobenthos in the SA habitat displayed significant negative correlations with salinity and organic matter. The results indicated that the macrobenthos functional groups in the SA habitat were simpler and more sensitive to environmental changes than those in the SG habitat.The vegetation structures may give rise to the differences in macrobenthos distributions in both habitats, which need to be further observed and explored.

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Section: Discussionmentioning

confidence: 99%

Comparison of macrobenthic communities between the invasive Spartina alterniflora and native Suaeda glauca habitats in the Yellow River Delta

Han

Wang

et al. 2021

Preprint

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Salt marsh habitats in estuaries play important roles in species compositions and macrobenthos abundances. Here, the macrobenthic communities and environmental conditions in two habitats, which are dominated by the invasive species Spartina alterniflora (SA) and native species Suaeda glauca (SG), in the Yellow River Delta were studied to assess habitat function. The seasonal data showed that the species diversity and abundance of macrobenthos in the SA habitat were much higher than those in the SG habitat. The functional groups in the former showed significant seasonal changes and shifted from polychaeta (68%) in spring to mollusca (97%) in autumn, but in the latter, it was dominated by crustacea (63-86%), mollusca (1-25%) and polychaeta (9-13%), and only mollusca exhibited obvious seasonal changes. The sediments in the SA habitat contained richer organic matter contents and exhibited higher Chl- a concentrations than those in the SG habitat, although the grain sizes were coarser in the SA habitat. At the seasonal scale, macrobenthos in the SA habitat displayed significant negative correlations with salinity and organic matter. The results indicated that the macrobenthos functional groups in the SA habitat were simpler and more sensitive to environmental changes than those in the SG habitat. The vegetation structures may give rise to the differences in macrobenthos distributions in both habitats, which need to be further observed and explored.

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Factors structuring the macrobenthos community in tidal algal reefs

Cited by 9 publications

References 57 publications

Real-time and long-term monitoring of waves and suspended sediment concentrations over an intertidal algal reef

Real-time and long-term monitoring of waves and suspended sediment concentrations over an intertidal algal reef

Comparison of macrobenthic communities between the invasive Spartina alterniflora and native Suaeda glauca habitats in the Yellow River Delta

Comparison of macrobenthic communities between the invasive Spartina alterniflora and native Suaeda glauca habitats in the Yellow River Delta

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