Spatial and temporal patterns of carbon flow in a temperate, large river food web

Pingram, Michael A.; Collier, Kevin J.; Hamilton, David P.; Hicks, Brendan J.; David, Bruno

doi:10.1007/s10750-012-1408-2

Cited by 48 publications

(28 citation statements)

References 82 publications

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“…d 13 C of seston and phytomicrobenthos differed among locations; trees and herbaceous plants had relatively consistent d 13 C values across locations for a given season. d 13 C values of seston, phytomicrobenthos and trees varied among seasons, and were similar to values reported for these groups from other temperate rivers (Hladyz et al, 2012;Pingram et al, 2012;Growns et al, 2013). Mean d 13 C of phytomicrobenthos generally was lower at the downstream site and tributary 2, and higher in the reservoir relative to upstream sites.…”

Section: Isotopic Signatures Of Basal Sources and Omnivorous Fishessupporting

confidence: 79%

“…Dams disturb natural processes associated with longitudinal fluvial gradients and alter biotic communities and food web dynamics (Romanuk et al, 2006). Availability of primary production sources for aquatic consumers is influenced by hydrology (Roach et al, 2014), nutrient enrichment from agricultural and urban sources (Pingram et al, 2012), and dams that regulate flows in downstream reaches (Shannon et al, 2001;Hoeinghaus et al, 2007;Marty et al, 2008;Vörösmarty et al, 2010). Several studies concluded that flows released from reservoirs shifted diets of fishes and invertebrates in downstream reaches (Chester & Norris, 2006;Smokorowski et al, 2011), whereas other studies concluded no major effects (Chessmen et al, 2009;Rolls et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

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Stable isotope analysis reveals relative influences of seasonal hydrologic variation and impoundment on assimilation of primary production sources by fish in the Upper Yesilırmak River, Turkey

et al. 2015

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This study analyzed variation in stable isotope ratios of aquatic and terrestrial primary producers and two common cyprinid fishes (Capoeta banarescui and Squalius cephalus) at seven sites in the upper Yeşilırmak River Basin, Turkey, to estimate relative contributions of basal production sources to fish biomass. We hypothesized that seasonal and spatial variation in fish assimilation of basal production sources would be affected by hydrological variation, with results for a reach downstream from a reservoir differing from those from upstream sites. Carbon and nitrogen isotopic ratios of primary producers and S. cephalus and d 15 N of C. banarescui revealed significant spatial variation. d 13 C of primary producers, d 15 N of S. cephalus, and both d 13 C and d 15 N of C. banarescui revealed significant seasonal variation. C. banarescui biomass in the river channel was mostly derived from terrestrial herbaceous plants, and its biomass in the reservoir derived mostly from aquatic plants. Estimated proportional contributions of herbaceous plants to both species were greatest at the downstream site during spring, and declined during summer in the case C. banarescui. Overall, the influence of the dam was small relative to effects from watershed characteristics and seasonal changes in temperature and hydrology.

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Section: Isotopic Signatures Of Basal Sources and Omnivorous Fishessupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Stable isotope analysis reveals relative influences of seasonal hydrologic variation and impoundment on assimilation of primary production sources by fish in the Upper Yesilırmak River, Turkey

et al. 2015

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“…al. ; Kuzyk et al ; Weissenberger et al ; Lu et al ; Marchese et al ; Pingram et al ), as well as in the interval of the values of δ 13 C of foliage of dominant tree species and soils in this region (Menyailo et al ).…”

Section: Discussionmentioning

confidence: 94%

Differences in organic matter and bacterioplankton between sections of the largest Arctic river: Mosaic or continuum?

Gladyshev

Kolmakova

Толомеев

et al. 2015

Limnology & Oceanography

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We studied biogeochemical characteristics, including organic carbon and nitrogen contents, fatty acid (FA) composition, stable isotope ratios, and primary production in conjunction with species composition of bacterioplankton, using next generation sequencing, in the Yenisei River along a distance ∼1800 km. Basing on FA composition of particulate organic matter (POM) and on other indicators of sources of POM, the river was subdivided into four sections. The upper section 1, situated in mountain region, was the net source of high‐quality autochthonous organic matter, produced primarily by diatoms and partly consumed by specialized bacteria species. Section 2 in plain taiga was net sink of high quality allochthonous and autochthonous organic matter, produced by cyanobacteria and green algae. Section 3 was net sink of organic matter, primarily allochthonous, consumed by the specialized species of bacteria. The lowest section 4, situated in tundra, was primarily the conduit of recalcitrant terrestrial organic matter, but also the net source of autochthonous organic matter, produced by diatoms. Biogeochemical traits of sections of the Yenisei River evidently shaped dominant species composition of bacterioplankton of these sections. Regarding the biogeochemical and microbiological data, we concluded that the Yenisei River ecosystem complexly combines features of river mosaic, river continuum, and “neutral pipe.”

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“…The area around Hamilton has a mild temperate and damp climate with mean annual rainfall of 1190 mm, most of it falling between June and September. Consequently, river flows tend to be higher in winter but vary throughout the year on a daily basis due to hydropeaking (mean annual diurnal water level range 0.6 m; Pingram et al 2014). Mean annual air temperature is 13.7°C, with daily maxima typically ranging from 22-26°C in January to February, and 10-15°C in July to August.…”

Section: Study Area and Sampling Sitesmentioning

confidence: 99%

Littoral and benthic macroinvertebrate community responses to contrasting stressors in a large New Zealand river

Collier

Hamer

Moore

2014

New Zealand Journal of Marine and Freshwater Research

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Large rivers present major challenges for biomonitoring and the development of biocriteria because of difficulties obtaining samples representative of the range of habitats present and a paucity of information on taxa responses to environmental conditions. We sampled littoral and deepwater benthic habitats to investigate macroinvertebrate community composition associated with organic, sediment and heated water discharges at 22 transects along a 73 km section of the lower Waikato River, North Island, New Zealand. Significant community differences in near-field exposure versus no exposure sites were found only in littoral habitats, partly reflecting changes in relative abundances of Crustacea and Oligochaeta. Littoral and benthic habitats supported different macroinvertebrate communities, particularly downstream of the sediment input and following the onset of a river-floodplain morphology which may have enhanced deposition of suspended sediment. Distance down river was a significant covariate for most metrics derived from benthic samples, but did not influence the relative abundance of most macroinvertebrate groups in littoral samples. Collectively, these results suggest that littoral habitats are likely to be more suitable than benthic habitats for biomonitoring since macroinvertebrate faunas were responsive to near-field stressor exposure and were less likely to be influenced by longitudinal changes in river conditions.

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Spatial and temporal patterns of carbon flow in a temperate, large river food web

Cited by 48 publications

References 82 publications

Stable isotope analysis reveals relative influences of seasonal hydrologic variation and impoundment on assimilation of primary production sources by fish in the Upper Yesilırmak River, Turkey

Stable isotope analysis reveals relative influences of seasonal hydrologic variation and impoundment on assimilation of primary production sources by fish in the Upper Yesilırmak River, Turkey

Differences in organic matter and bacterioplankton between sections of the largest Arctic river: Mosaic or continuum?

Littoral and benthic macroinvertebrate community responses to contrasting stressors in a large New Zealand river

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