Assessing connectivity of estuarine fishes based on stable isotope ratio analysis

Herzka, Sharon Z.

doi:10.1016/j.ecss.2005.02.006

Cited by 178 publications

(129 citation statements)

References 62 publications

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“…Fry (1999) found that pond smelt were probably residents of the shallow pool areas in which they were caught and that pond smelt d 13 C values reflected the lower d 13 C values of their prey. The lower pond smelt d 13 C values in Lake Mae probably indicates that pond smelt d 13 C values are related to the isotopic signature (lower d 13 C) of their freshwater prey unlike in Lake Hwajinpo and Lake Youngrang (Limburg 1998;Herzka 2005;Kang et al 2008).…”

Section: Isotopic Differences In Pond Smelt In Brackish Lagoonsmentioning

confidence: 99%

“…Ontogenetic shifts based on changes in feeding behavior would be expected to result in a change in the isotopic composition of the fish (Vizzini and Mazzola 2002;Herzka 2005;Garcia et al 2007). Doucett et al (1999) found that d 13 C values of adult brook trout were higher than d 13 C values of smaller brook trout, suggesting that variation in food sources by life stage is important to consider when interpreting stable isotopic signatures of anadromous fish.…”

Section: Isotopic Differences In Pond Smelt In Brackish Lagoonsmentioning

confidence: 99%

“…Adult pond smelt migrate upstream to spawning grounds from early April to mid-May (Katayama and Okata 1995;Arai et al 2006). Stable isotope measurements of anadromous fish tissue have been used as indicators of habitat quality and assessing connectivity in estuarine ecosystems conservation and management efforts (Fry 1999;Herzka 2005). Other studies have found that the stable isotopic composition of fish can be useful as an indicator of differences among habitats (France 1994;France 1995;Doucett et al 1999;Garcia et al 2007).…”

Section: Introductionmentioning

confidence: 99%

“…Many studies have used carbon (C) and nitrogen (N) stable isotopes to analyze energy flow and trophic relationships in aquatic ecosystems. For example, stable isotopes have been used to identify specific habitats as primary feeding areas, distinguishing between freshwater or estuarine environments (Doucett et al 1999;Herzka 2005;Garcia et al 2007;Shin et al 2011). C and N stable isotopes are also useful for differentiating between migratory and nonmigratory fishes in freshwater or estuarine ecosystems (Kline et al 1998;Limburg 1998). Identifying relationships between N stable isotope signatures and sources of excess N can help identify critical habitats and assist ecosystem management efforts (Cabana and Rasmussen 1996;McClelland and Valiela 1998;Schlacher et al 2005).…”

Section: Introductionmentioning

confidence: 99%

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Habitat-specific variation in stable C and N isotope ratios of pond smelt (Hypomesus nipponensis)

Lee

Choi

Owen

et al. 2013

Animal Cells and Systems

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The aim of this study was to investigate differences in d 13 C and d 15 N of pond smelt (Hypomesus nipponensis) collected from three brackish lagoons, which have different characteristics, the principal one being the presence or absence of a weir located near the mouth of the outlet channel. The presence or absence of a weir is reflected in a difference in salinity among the study lakes. We found a general pattern of lower pond smelt d 13 C values in Lake Mae with lower salinity and higher pond smelt d 13 C values in Lake Hwajinpo and Lake Youngrang (lagoons with higher salinity). Pond smelt d 13 C values showed little variation among the three lagoons related to pond smelt length, but likely reflected the availability of freshwater prey in Lake Mae. Among the lagoons, we found that pond smelt d 15 N values were lower in Lake Hwajinpo compared with pond smelt d 15 N values in Lake Youngrang and Lake Mae. This pattern likely shows a difference in anthropogenic nitrogen (N) loading among the lagoons. The results of this study emphasize the utility of stable isotope measurements to better understand how structural characteristics of aquatic ecosystems (presence or absence of a weir) and anthropogenic disturbances can affect stable isotope patterns in aquatic food webs. This stable isotope approach may be a general technique for evaluating fish habitat and restoration or management of coastal lagoon ecosystems.

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Section: Isotopic Differences In Pond Smelt In Brackish Lagoonsmentioning

confidence: 99%

Section: Isotopic Differences In Pond Smelt In Brackish Lagoonsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Habitat-specific variation in stable C and N isotope ratios of pond smelt (Hypomesus nipponensis)

Lee

Choi

Owen

et al. 2013

Animal Cells and Systems

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“…Two bait traps (10 m long and 6 mm mesh size) were set overnight in each area to collect fishes and macro-invertebrates. The muscle tissues of fishes and macro-invertebrates were used for stable isotope analysis, because the constant isotopic value of this tissue reflects the isotopic value of food sources utilized over long periods (i.e., several weeks to months) (Herzka, 2005).…”

Section: Sample Collectionmentioning

confidence: 99%

Role of Demersal Zooplankton as a Food Source for Higher Trophic Levels at Fukido Estuary, Ishigaki Island, Okinawa, Japan

Hung¹,

Casareto²,

Hayashizaki³

et al. 2017

ijms

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Demersal zooplankton (DZ) appear in the water column at night, and are highly abundant in mangrove, seagrass, and coral reef habitats; however, few studies have discussed their role in aquatic food webs, considering different consumers and their preferences on different DZ' size classes. This study elucidates the role of DZ as a food source for higher trophic levels in an estuarine area, particularly with respect to the food preference and size selection of their consumers. The study was conducted in the mangrove forest of Fukido Estuary and an adjacent reef lagoon (with seagrass-dominated and seagrass-coral mixture areas) on Ishigaki Island, Japan. The abundance of demersal zooplankton was 4.0, 5.4, and 11.3×10 4 ind.m -2 for seagrass, mangrove, and seagrass-coral mixture habitats, respectively. The lowest DZ biomass was recorded in mangroves and mainly dominated by smaller organisms, because their consumers in this habitat prefer large-sized prey. The δ 13 C and δ 15 N signatures showed that, in mangroves, demersal zooplankton constituted a higher proportion of the diet of fishes than in lagoon habitats; however, demersal zooplankton did not have a significant role in the diet of fishes and macroinvertebrates in the lagoon. Consistency among biomass, stomach contents, and the proportions of DZ of all size classes in the diet of mangrove fishes indicated that DZ serve as a major food source. In contrast, fishes in lagoon habitats consumed more crabs, shrimps and mollusks than DZ. In conclusion, our analytical approach allowed us to demonstrate that DZ of different body sizes serve as food sources for different consumers in different habitats of the estuarine ecosystem.

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Stable Isotope Ratios as Tracers in Marine Food Webs: An Update

Michener¹,

Kaufman²

2007

Stable Isotopes in Ecology and Environmental Science

570

674

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Assessing connectivity of estuarine fishes based on stable isotope ratio analysis

Cited by 178 publications

References 62 publications

Habitat-specific variation in stable C and N isotope ratios of pond smelt (Hypomesus nipponensis)

Habitat-specific variation in stable C and N isotope ratios of pond smelt (Hypomesus nipponensis)

Role of Demersal Zooplankton as a Food Source for Higher Trophic Levels at Fukido Estuary, Ishigaki Island, Okinawa, Japan

Stable Isotope Ratios as Tracers in Marine Food Webs: An Update

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