Analysis of organic carbon sources in tropical seagrass fish: a case study of the east coast of Hainan Province

Du, Jianguo; Chen, Zehao; Xie, Meiling; Chen, Mingru; Zheng, Xinqing; Liao, Jianji; Chen, Bin

doi:10.1080/17451000.2019.1673896

Cited by 13 publications

(8 citation statements)

References 42 publications

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“…In addition, decomposed macroalgae were observed in this site in summer, which might also result in higher δ 13 C values for POM (Malet et al, 2008;Schaal et al, 2010). It is interesting that the δ 13 C values for POM in this study were close to the values previously measured in the same site (Fan et al, 2011) and around the mid south coast of Korea (Kang et al, 2009), but higher than values dominated by marine phytoplankton (Schaal et al, 2010;Du et al, 2019). Such higher δ 13 C values for POM may be attributed to the specific taxonomic composition of phytoplankton in this site.…”

Section: Isotope Ratios Characteristics Of Food Sourcessupporting

confidence: 83%

“…In order to reduce the number of food sources in the calculations, E. acoroides and T. hemprichii, and their epiphytes were considered as a single group called seagrass and epiphyte, respectively. Meanwhile, POM and SOM were not considered as potential food sources of herbivores based on the published literature (Du et al, 2019;Lin et al, 2021). In addition, considering that SOM is a mixture of other primary food sources (i.e., seagrass, epiphytes, macroalgae, and POM) (Carlier et al, 2009;Xu et al, 2018), we excluded it from the mixing model.…”

Section: Discussionmentioning

confidence: 99%

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Carbon Transfer Processes of Food Web and Trophic Pathways in a Tropical Eutrophic Seagrass Meadow

et al. 2021

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Seagrass meadows provide important habitats and rich organic carbon sources for consumers at different trophic levels but are threatened by accelerating eutrophication in coastal waters. Nevertheless, at present, carbon transfer processes throughout the food web and trophic pathways in eutrophic seagrass meadows are still poorly known. To resolve this issue, carbon sources of different trophic communities in a eutrophic tropical seagrass meadow [Xincun (XC) bay, South China Sea] under eutrophication were examined in summer and winter using dual stable isotopes. The δ13C value of omnivores and carnivores overlapped more with that of herbivores and planktivores/filter feeders, which mainly overlapped with that of epiphytes in summer and macroalgae in winter. Meanwhile, epiphytes and macroalgae exhibited high biomass and corresponding highest contribution to herbivores, omnivores, and carnivores in summer and winter, respectively. These results suggest that the grazing food chain was the main trophic pathway in this eutrophic seagrass meadow, and that the transfer of carbon flow in the grazing food chain was mainly dominated by the proliferating epiphytes or macroalgae carbon. In contrast, the contribution of seagrass to detritivores in both seasons was higher than that of other food sources. Our findings suggest that in eutrophic tropical seagrass meadows, the proliferation of epiphytes or macroalgae induced by high nutrient loading, as well as their seasonal changes, has a greater impact on the transfer of carbon in the grazing food chain than that in the detritus food chain, and the seagrass fueled the food web mainly through the detritus food chain.

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Section: Isotope Ratios Characteristics Of Food Sourcessupporting

confidence: 83%

Section: Discussionmentioning

confidence: 99%

Carbon Transfer Processes of Food Web and Trophic Pathways in a Tropical Eutrophic Seagrass Meadow

et al. 2021

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“…Seagrass meadows provide important nursery areas for juveniles for about 20% of the world's biggest fisheries (Cullen-Unsworth and Unsworth 2018). In the South China Sea and Coral Triangle, seagrass meadows with different canopy characteristics (e.g., shoot density, leaf area) support distinct fish communities (Pogoreutz et al 2012), and around 64-93% of the fishes in seagrass meadows are juveniles (e.g., species belonging to the families Siganidae, Lethrinidae, Labridae, Apogonidae, Tetraodontidae, and Carangidae; Du et al 2018Du et al , 2019Xie et al 2020). The juveniles of these species have adapted to the different seagrass microhabitats, and they show different behaviors from adults.…”

Section: Seagrass Meadows Provide Microhabitats That Act As Nurseriesmentioning

confidence: 99%

“…Half of the 55 faunal species in South Sulawesi, Indonesia feed on seagrass material directly or indirectly (Vonk et al 2008), and more than 82% of the fish species mainly feed on seagrass and its epiphytes in North Sulawesi, Indonesia and Wenchang, China (Du et al 2016(Du et al , 2019. Reef species employ different feeding modes in the various seagrass microhabitats.…”

Section: Seagrass Meadows Provide Microhabitats That Act As Foraging mentioning

confidence: 99%

Seagrass meadows provide multiple benefits to adjacent coral reefs through various microhabitat functions

Nagelkerken

et al. 2020

Ecosyst Health Sustain

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Tropical seagrass meadows and coral reefs often function as interconnected marine habitats, but they are often studied and managed as homogenous units. As macrohabitats, seagrass meadows provide important benefits to adjacent reef ecosystems by acting as natural filters of sediments and nutrients, and by providing critical feeding, nursery, and refuge habitats for reef fishes and other fauna. Whilst the macrohabitat functions of seagrass meadows have been often acknowledged, their microhabitats functions have largely been neglected. The purpose of the study is to explore how seagrass meadows provide multiple benefits to adjacent coral reefs through various microhabitat functions. The paper reveals some of the diversity of microhabitats that seagrass meadows contain, such as macroalgal mats, rubble cavities, sand patches with sparse seagrass, anemone gardens, hard substratum, and sponges mixed with seagrass. We highlight the ways in which reef creatures have diversified and specialized in using these different microhabitats, and postulate that seagrass microhabitat diversity enhances the habitat function and faunal diversity of seagrass meadows.

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“…A c c e p t e d https://engine.scichina.com/doi/10.1360/TB-2021-0685 "-"表示文章中无此内容; 非结构性碳水化合物=糖+淀粉 1.2 水体有机碳的组成海草床水体有机碳主要来源于初级生产者分泌、淋溶、分解等一系列过程 [44] . 海草床浮游动物、大型动物(如赤魟等)主要以海草碎屑及其附生植物为食 [45] , 其排泄与分泌对有机碳有相应的贡献, 微生物量碳主要储存在沉积物中, 而非水体中 [46] . 水体有机碳按照形态又可分为溶解性有机碳(dissolved organic carbon, DOC)和颗粒性有机碳(particle organic carbon, POC).…”

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Organic carbon composition and microbial transformation of seagrass meadow and its responses to eutrophication

Luo¹,

Liu²,

Jiang³

et al. 2021

Chin. Sci. Bull.

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Analysis of organic carbon sources in tropical seagrass fish: a case study of the east coast of Hainan Province

Cited by 13 publications

References 42 publications

Carbon Transfer Processes of Food Web and Trophic Pathways in a Tropical Eutrophic Seagrass Meadow

Carbon Transfer Processes of Food Web and Trophic Pathways in a Tropical Eutrophic Seagrass Meadow

Seagrass meadows provide multiple benefits to adjacent coral reefs through various microhabitat functions

Organic carbon composition and microbial transformation of seagrass meadow and its responses to eutrophication

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