Isotopic niche differentiation in benthic consumers from shallow-water hydrothermal vents and nearby non-vent rocky reefs in northeastern Taiwan

Wu, Jhao-Ying; Lin, Siou-Yan; Suo, Peng; Hung, Jia‐Jang; Chen, Chen‐Tung Arthur; Liu, Li‐Lian

doi:10.1016/j.pocean.2021.102596

Cited by 5 publications

(10 citation statements)

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“…The contributions of the individual food sources to the consumers were quantified using the isotopic data and MixSIAR 33 . Unlike other mixing models, such as IsoError and IsoSource, MixSIAR can simultaneously incorporate the isotopic variability associated with consumers (end members), potential diet sources, and trophic enrichments, and can process multiple sources 27 . MixSIAR also considers prior information within the model and generates potential dietary solutions as true probability (posterior) distributions.…”

Section: Methodsmentioning

confidence: 99%

“…This might have resulted in an overestimation of the trophic reliance on chemosynthetic production. Wu et al 27 compared the isotopic niches of the distinctive vent and nonvent regions in Kueishan Island, which are approximately 3–14 km apart, and discovered a niche differentiation of benthic consumers between the two regions. However, although the greatest physicochemical changes in the water occur near the vents, that is, ≤ 1 km from their center, the spatial differences in the isotopic niche of the benthic consumers near the vents are unknown.…”

Section: Introductionmentioning

confidence: 99%

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Autochthony and isotopic niches of benthic fauna at shallow-water hydrothermal vents

Wang

Lau

Chan

et al. 2022

Sci Rep

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The food webs of shallow-water hydrothermal vents are supported by chemosynthetic and photosynthetic autotrophs. However, the relative importance of these two basal resources for benthic consumers and its changes along the physicochemical gradient caused by vent plumes are unknown. We used stable carbon and nitrogen isotopes (i.e., δ13C and δ15N) and Bayesian mixing models to quantify the dietary contribution of basal resources to the benthic fauna at the shallow-water vents around Kueishan Island, Taiwan. Our results indicated that the food chains and consumer production at the shallow-water vents were mainly driven by photoautotrophs (total algal contribution: 26–54%) and zooplankton (19–34%) rather than by chemosynthetic production (total contribution: 14–26%). Intraspecific differences in the trophic support and isotopic niche of the benthic consumers along the physicochemical gradient were also evident. For instance, sea anemone Anthopleura sp. exhibited the greatest reliance on chemosynthetic bacteria (26%) and photoautotrophs (66%) near the vent openings, but zooplankton was its main diet in regions 150–300 m (32–49%) and 300–700 m (32–78%) away from the vent mouths. The vent-induced physicochemical gradient structures not only the community but also the trophic support and isotopic niche of vent consumers.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Autochthony and isotopic niches of benthic fauna at shallow-water hydrothermal vents

Wang

Lau

Chan

et al. 2022

Sci Rep

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“…The importance of dead zooplankton to vent crabs decreases from vent center to periphery accordingly (Wang et al, 2022). Furthermore, vent crabs collected from YV had significantly more depleted δ 13 C and δ 15 N values than those in WV (Wu et al, 2021).…”

mentioning

confidence: 91%

“…), snails (Anachis misera and Nassarius sp. ), chitons, serpulid polychaetes, and vent crab (X. testudinatus) (Chan et al, 2016;Chang, 2006;Chen et al, 2015;Jeng et al, 2004;Tang et al, 2013;Wang et al, 2014;Wang et al, 2015;Wu et al, 2021). In YV, the only macrofauna is the endemic vent crabs.…”

mentioning

confidence: 99%

“…The detection of high proteolytic enzyme activities in the midgut gland of vent crabs indicated they are adapted to irregular food supply (Hu et al, 2012). A trophic study by δ 13 C and δ 15 N analysis reveals that dead zooplankton killed by sulfur plumes (as plankton-derived production) is essential to scavengers and carnivores (Chang et al, 2018;Wang et al, 2014;Wu et al, 2021). The importance of dead zooplankton to vent crabs decreases from vent center to periphery accordingly (Wang et al, 2022).…”

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confidence: 99%

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Differential feeding habits of the shallow-water hydrothermal vent crab Xenograpsus testudinatus correlate with their resident vent types at a scale of meters

Lin

Huang

et al. 2022

Preprint

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Abstract. The shallow-water hydrothermal vents (SVs) located off Kueishan (KS) Islet, Taiwan, are one of the most intensively studied vent systems. Here, two distinct vent types were identified as white vents (WVs) and yellow vents (YVs), based on the color, physical and chemical characteristics of vent plumes. The endemic vent crabs (Xenograpsus testudinatus) are abundant in both WVs and YVs. However, most research on the vent crabs was associated with WV or unspecified vent areas. Studies on crabs dwelling in other vent types are rare. Here, we investigated the feeding habit of crabs inhabiting YV and made a comparison with WV crabs. Specifically, we examined the benthic community of WV and YV, isotopic niche width, and protein expression patterns of the crabs from the two vent types at a distance of 100 m. The coverage of sessile organisms and low-mobility fauna in WV were more abundant than in YV. The δ13C and δ15N values were insignificantly different between crabs from WV and YV. The niche width of crabs from WV was significantly broader than those from YV, shown as SEAc areas of 3.62 ‰2 vs. 0.88 ‰2 (p < 0.05). The overlap percentages in WV and YV were 23.9 % and 97.9 %, respectively. The food sources of crabs in WV were more diverse than those in YV. Based on the protein expression patterns, the vent crabs were classified into WV- and YV-dwellings. Our results revealed that the feeding habits of the endemic vent crabs (X. testudinatus) are adapted to their vent types at a distance of 100 m, and the trans-vent movement is uncommon.

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Data on isotopic niche differentiation in benthic consumers from shallow-water hydrothermal vents and nearby non-vent rocky reefs in northeastern Taiwan

Lin

Suo

et al. 2021

Data in Brief

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This paper presents data on carbon and nitrogen stable isotopes in benthos from shallow-water hydrothermal vents (SV) and nearby non-vent rocky reefs (NV) located in northeastern Taiwan, which is related to the article “Isotopic niche differentiation in benthic consumers from shallow-water hydrothermal vents and nearby non-vent rocky reefs in northeastern Taiwan” [1] . Field sampling work was conducted in July 2009 and July–August 2010 to collect sediment organic matters (SOM), zooplankton, and benthos for carbon and nitrogen stable isotopic analyses. Scuba divers collected macrobenthos, seawater, and surface sediments (0–2 cm). The collection of zooplankton was by a North Pacific standard net and trawled vertically. Testing samples were lyophilized before grounding by a mortar and pestle. For carbon and nitrogen isotope analyses, approximately 1 mg of powder was weighed and encapsulated in a tin capsule. Analyses were performed at the stable isotope laboratory at the University of California at Davis using an Integra Mass Spectrometer elemental analyzer (PDZ Europa, Sandbach, UK). The information is presented as 187 and 53 unprocessed data points from SV and NV, which incorporates δ 13 C and δ 15 N values (‰) of sediment, zooplankton, and benthos’ tissue samples. Data from SOM provides information about chemosynthetic activity in SV sites. These data can be used to correlate food sources of consumers inhabiting shallow-water hydrothermal vent and rocky reef ecosystems in subtropical regions.

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Isotopic niche differentiation in benthic consumers from shallow-water hydrothermal vents and nearby non-vent rocky reefs in northeastern Taiwan

Cited by 5 publications

References 84 publications

Autochthony and isotopic niches of benthic fauna at shallow-water hydrothermal vents

Autochthony and isotopic niches of benthic fauna at shallow-water hydrothermal vents

Differential feeding habits of the shallow-water hydrothermal vent crab Xenograpsus testudinatus correlate with their resident vent types at a scale of meters

Data on isotopic niche differentiation in benthic consumers from shallow-water hydrothermal vents and nearby non-vent rocky reefs in northeastern Taiwan

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