The use of stable isotopes for food web analysis

Wada, Eitaro; Mizutani, Hiroshi; Minagawa, Masahiro

doi:10.1080/10408399109527547

Cited by 245 publications

(139 citation statements)

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“…Stable isotopes are increasingly used as tracers of material transport and use in biological systems (Fry & Sherr 1984, Peterson et al 1985, Owens 1987, Peterson & Fry 1987, Fry & Wainright 1991, Wada et al 1991. Isotopic composition is expressed as per mil deviations from a standard and denoted by 6, defined by the standard Eq.…”

Section: Stable Isotope Methodsmentioning

confidence: 99%

Use of riverine organic matter in plankton food webs of the Baltic Sea

Rolff¹,

Elmgren²

2000

Mar. Ecol. Prog. Ser.

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The use of riverine allochthonous organic matter by plankton in the northern Baltic Sea was studied using stable isotopes of carbon and nitrogen. Dissolved and particulate material was sampled in the main Swedish rivers entering the Bothnian Bay and the Bothnian Sea. At 4 sea stations, dissolved matter, plankton and nekton were sampled in l l size-classes: below 0.7 pm filtrate, 0. 7-5, 5-20, 20-50, 50-100, 100-200, 200-500, 500-2500 pm, mysids (-10 and -20 mm) and hernng. A riverine influence could be detected in 613C, but not in 6 "~. Except for the 5-20 pm fraction, the carbon became enriched in 13C with increasing salinity in all plankton size-fractions. This mainly reflected differences in the 6I3c of phytoplankton, due to the different F13C of marine and riverine dissolved inorganic carbon. Plankton use of riverine dssolved organic carbon (DOC) was tested with a 2-component model. The 613C of riverine DOC and the basin phytoplankton were taken to represent the allochthonous and autochthonous signals, respectively. Use of riverine DOC was indicated for larger zooplankton (200-2500 pm) in the Bothnian Bay, confirming earlier suggestions of extensive use of riverine DOC in the zooplankton food webs in this basin. A new method to adjust 6I3C in zooplankton for variations in lipid content by analysis of covariance was successfully demonstrated. The isotope data reflect the presence of 2 trophic structures, coinciding with the rnicroheterotrophic food web (0.7-5 pm) and the classic grazing food web (>50 pm). From phytoplankton to large zooplankton, 6% increased linearly with the logarithm of organism size in all basins. This increase was steeper in the Bothnian Sea and the Baltic Proper, where zooplankton diversity is higher, than in the Bothnian Bay, possibly reflecting more complex food-web interactions.

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Section: Stable Isotope Methodsmentioning

confidence: 99%

Use of riverine organic matter in plankton food webs of the Baltic Sea

Rolff¹,

Elmgren²

2000

Mar. Ecol. Prog. Ser.

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“…Typically, consumers become enriched in δ 15 N compared to their food source by 3 to 4 ‰ (Minagawa & Wada 1984, Michener & Schell 1994, Post 2002, Vanderklift & Ponsard 2003, so that the δ 15 N of an organism can predict trophic position in the food web (Wada et al 1991). There is, however, considerable variation in fractionation both among species (Parker et al 2008) and depending on the food source (Crawley et al 2007).…”

Section: Abstract: Eutrophication · Nitrogen Load · Zostera Marina ·mentioning

confidence: 99%

δ15N and δ13C reveal differences in carbon flow through estuarine benthic food webs in response to the relative availability of macroalgae and eelgrass

Olsen¹,

Fox²,

Teichberg

et al. 2011

Mar. Ecol. Prog. Ser.

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“…Fry & Sherr 1984, Petersen & Fry 1987, Wada et al 1991). δ 15 N and δ 13 C in animal tissues reflects that of the diet used for tissue synthesis, with predictable fractionation between trophic levels (DeNiro & Epstein 1978, Petersen & Fry 1987, McCutchan et al 2003.…”

Section: Abstract: Bottlenose Dolphin · Diet · Fjord · Stable Isotopmentioning

confidence: 99%