Seasonal variability in baseline δ<sup>15</sup>N and usage as a nutrient indicator in Lake Poyang, China

Wang, Yuyu; Yu, Xiubo; Zhang, Lu; Lei, Guangchun

doi:10.1080/02705060.2013.763296

Cited by 15 publications

(15 citation statements)

References 31 publications

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“…mussels) Cabana and Rasmussen, 1996;Harrington et al, 1998;Oczkowski et al, 2008;Carvalho et al, 2015). In addition and identical to our study, the range of δ 15 N values for nitrate and POM has been shown to be wider than the range for primary producers, indicating a timeaveraging effect in mussels (Gustafson et al, 2007;Wang et al, 2013). Previous studies reported mussel δ 15 N values between +6.6 and +16.7 ‰ in densely populated areas (Cabana and Rasmussen, 1996), polluted inland waterbodies (Wen et al, 2010;Wang et al, 2013), and a eutrophic estuary (Fry et al, 2011).…”

Section: Discussionsupporting

confidence: 86%

“…In addition and identical to our study, the range of δ 15 N values for nitrate and POM has been shown to be wider than the range for primary producers, indicating a timeaveraging effect in mussels (Gustafson et al, 2007;Wang et al, 2013). Previous studies reported mussel δ 15 N values between +6.6 and +16.7 ‰ in densely populated areas (Cabana and Rasmussen, 1996), polluted inland waterbodies (Wen et al, 2010;Wang et al, 2013), and a eutrophic estuary (Fry et al, 2011). Our values are at the lower end of this range, with mussel δ 15 N values in our study being between 6.8 and 10.3 ‰, indicating the estuary is not highly polluted by wastewater, agriculture or fertilizers.…”

Section: Discussionsupporting

confidence: 86%

“…nitrate, ammonium) or of aquatic short-lived organisms with fast tissue turnover times, such as phytoplankton, may significantly under-or overestimate the average level of pollution, as the result strongly depends on the time of measurement. Bivalves, on the other hand, which include the blue mussel, are primary consumers with limited movement, and have been suggested as suitable site-specific bioindicators of time-averaged persistence of nutrient pollutants, because their isotopic signature fluctuates less than that of their food sources due to longer tissue turnover rates (Raikow and Hamilton, 2001;Post, 2002;Fukumori et al, 2008;Fertig et al, 2010;Wang et al, 2013). The blue mussel, Mytilus edulis, is a common sessile bivalve in estuarine and marine environments that is able to adapt to a wide range of environmental conditions, such as food concentration, temperature, and salinity (e.g.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Can mussels be used as sentinel organisms for characterization of pollution in urban water systems?

Reichwaldt¹,

Ghadouani²

2016

Hydrol. Earth Syst. Sci.

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Abstract. Urbanization strongly impacts aquatic ecosystems by decreasing water quality and altering water cycles. Today, much effort is put towards the restoration and conservation of urban waterbodies to enhance ecosystem service provision, leading to liveable and sustainable cities. To enable a sustainable management of waterbodies, the quantification of the temporal and spatial variability of pollution levels and biogeochemical processes is essential. Stable isotopes have widely been used to identify sources of pollution in ecosystems. For example, increased nitrogen levels in waterbodies are often accompanied with a higher nitrogen stable isotope signature (δ 15 N), which can then be detected in higher trophic levels such as mussels. The main aim of this study was to assess the suitability of nitrogen stable isotopes as measured in mussels (Mytilus edulis), as an indicator able to resolve spatial and temporal variability of nitrogen pollution in an urban, tidally influenced estuary (Swan River estuary in Western Australia). Nitrogen concentrations were generally low and nitrogen stable isotope values of nitrate throughout the estuary were well within natural values of uncontaminated groundwater, organic nitrate from soils, or marinederived sources, indicating groundwater inflow rather than pollution by human activity was responsible for differences between sites. The δ 15 N signature in mussels was very stable over time within each site which indicated that mussels can be used as time-integrated sentinel organisms in urban systems. In addition, our study shows that the nature of the relationship between δ 15 N in the mussels and the nitrate in the water can provide insights into site-specific biogeochemical transformation of nutrients. We suggest that mussels and other sentinel organisms can become a robust tool for the detection and characterization of the dynamics of a number of emerging anthropogenic pollutants of concern in urban water systems.

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Section: Discussionsupporting

confidence: 86%

Section: Discussionsupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Can mussels be used as sentinel organisms for characterization of pollution in urban water systems?

Reichwaldt¹,

Ghadouani²

2016

Hydrol. Earth Syst. Sci.

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“…Thus, for our analysis, we assume that 3.4 % is appropriate. The baseline is the average d 15 N value of all snails collected at each sample site Aquat Ecol (2016) 50:187-195 189 (n = 3-10) because their isotopic signals are less variable in time as primary consumers (Post 2002b;Wang et al 2013), where the value 2 is the trophic position of the snail we using to estimate d 15 N base (Vander Zanden et al 1997;Post 2002b).…”

Section: Sample Collection and Stable Isotope Analysismentioning

confidence: 99%

Resource availability determines food chain length in Chinese subtropical rivers

Wang

Xiao

et al. 2016

Aquat Ecol

Self Cite

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Three prevailing hypotheses, namely resource availability, ecosystem size, and disturbance, are often used to explain variations in food chain length (FCL). Rivers vary widely in size, resources, and disturbance dimensions, even within the same catchment, providing an ideal platform to test ecological drivers of FCL in aquatic systems. In this study, we tested how resource availability (indicated by macroinvertebrate biomass), ecosystem size (indicated by basin area), and disturbance (indicated by daily water-level coefficients of variation) affected stable isotope-based estimates of FCL in subtropical rivers in the Province Jiangxi, China. The FCL varied widely among the studied rivers with a mean of 3.09 (range 2.00-3.99). Model-selection results indicated that resource availability could explain 60 % of the observed variation in FCL. The FCL of the studied rivers was positively correlated with fish richness and the total area of fish community d 13 C-d 15 N bi-plot space, thereby indicating that an increase in fish diversity could influence the trophic structure within the food web and lead to a longer FCL. Taken together, our results suggest that resource availability could predict FCL in subtropical rivers and plays a significant role in maintaining longer FCLs by providing more energy to support upper trophic-level fishes.

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“…Stable isotope technologies have been used as powerful and complementary tools for understanding the food web structure and energy pathways in aquatic ecosystems (Syvaranta et al 2011;Wang et al 2013). Both d 13 C and d 15 N can reveal the assimilated portion of consumers' diets at the time of synthesis (France 1995).…”

Section: Introductionmentioning

confidence: 99%

Spatial heterogeneity of food web structure in a large shallow eutrophic lake (Lake Taihu, China): implications for eutrophication process and management

Wang

Liu

et al. 2019

Journal of Freshwater Ecology

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The knowledge of food web spatial heterogeneity is important for ecologists and lake managers to understand ecosystem complexity and lake management. Lake Taihu, a large shallow eutrophic lake in China, has two distinct zones: algae-and macrophytedominated. In this study, we assessed the spatial heterogeneity of food webs in the two lake zones using stable isotope analysis and isotope mixing model. The basal sources and consumers showed significant differences in d 13 C and d 15 N ratios between the two lake zones, except for the filter-feeding fishes. Overall, more d 13 C-depleted and d 15 N-enriched ratios were found in the algae-than the macrophyte-dominated zones for basal sources and consumers. Although the consumers in the algae-dominant zone had higher average d 15 N values, the food web of the macrophyte-dominated zone had longer food chain length and more diverse trophic linkages. These spatial differences may have resulted from resource availability and environmental stress of Lake Taihu ecosystem. Factors associated with spatial trophic heterogeneity should be considered for the management and restoration of this shallow eutrophic lake.

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Seasonal variability in baseline δ¹⁵N and usage as a nutrient indicator in Lake Poyang, China

Cited by 15 publications

References 31 publications

Can mussels be used as sentinel organisms for characterization of pollution in urban water systems?

Can mussels be used as sentinel organisms for characterization of pollution in urban water systems?

Resource availability determines food chain length in Chinese subtropical rivers

Spatial heterogeneity of food web structure in a large shallow eutrophic lake (Lake Taihu, China): implications for eutrophication process and management

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Seasonal variability in baseline δ15N and usage as a nutrient indicator in Lake Poyang, China

Cited by 15 publications

References 31 publications

Can mussels be used as sentinel organisms for characterization of pollution in urban water systems?

Can mussels be used as sentinel organisms for characterization of pollution in urban water systems?

Resource availability determines food chain length in Chinese subtropical rivers

Spatial heterogeneity of food web structure in a large shallow eutrophic lake (Lake Taihu, China): implications for eutrophication process and management

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Seasonal variability in baseline δ¹⁵N and usage as a nutrient indicator in Lake Poyang, China