EurekaMag
+ Translate
+ Most Popular
Gaucher's disease;thirty-two years experience at Siriraj Hospital
A study of Macrobathra Meyrick from China (Lepidoptera, Cosmopterigidae)
First occurrence in ores of tetragonal chalcocite
Effects of trace element nutrition on sleep patterns in adult women
N.Z. range management guidelines. 2. Design of grazing management systems for tussock country
A case of lipoma of the esophagus
A revision of world Acanthosomatidae (Heteroptera: Pentatomidae): keys to and descriptions of subfamilies, tribes and genera, with designation of types
Life history of the coronate scyphozoan Linuche unguiculata (Swartz, 1788)
Perceptual restoration of obliterated sounds
Mutagenicity studies on two chromium(III) coordination compounds
The formation of the skeleton. I. Growth of a long bone. 1st appearance of a center of calcification
Leucopenia and abnormal liver function in travellers on malaria chemoprophylaxis
The joint commission: four key root causes loom large in sentinel event data
Treatment of vitiligo with topical 15% lactic acid solution in combination with ultra violet-A
Behaviour of dairy cows within three hours after feed supply: I. Influence of housing type and time elapsing after feed supply
Observations of the propagation velocity and formation mechanism of burst fractures caused by gunshot
Management and control of patients with type 2 diabetes mellitus in Lebanon: results from the International Diabetes Management Practices Study (IDMPS)
The diet composition and nutritional knowledge of patients with anorexia nervosa
Physoporella croatica Herak, 1958 of the Slovak karst Anisian (Slovakia, the West Carpathians Mts.)
Bright lights, big noise. How effective are vehicle warning systems?
Ein Plesiosaurier-Rest mit Magensteinen aus mittlerem Lias von Quedlinburg
Incidence of Chlamydia trachomatis in patients with sterility
Monster soup: the microscope and Victorian fantasy
Preliminary tests with residual sprays against poultry lice
Duration of the life of plants in phylogeny

Comparison of aquatic food chains using nitrogen isotopes


Comparison of aquatic food chains using nitrogen isotopes



Proceedings of the National Academy of Sciences of the United States of America 93(20): 10844-10847



ISSN/ISBN: 0027-8424

PMID: 8855268

DOI: 10.2307/40242

Recent studies have shown the utility or delta-15N to model trophic structure and contaminant bioaccumulation in aquatic food webs. However, cross-system comparisons in delta-15N can be complicated by differences in delta-15N at the base of the food chain. Such baseline variation in delta-15N is difficult to resolve using plankton because of the large temporal variability in the delta-15N of small organisms that have fast nitrogen turnover. Comparisons using large primary consumers, which have stable tissue isotopic signatures because of their slower nitrogen turnover, show that delta-15N increases markedly with the human population density in the lake watershed. This shift in delta-15N likely reflects the high delta-15N of human sewage. Correcting for this baseline variation in delta-15N, we report that, contrary to expectations based on previous food-web analysis, the food chains leading up to fish varied by about only one trophic level among the 40 lakes studied. Our results also suggest that the delta-15N signatures of nitrogen at the base of the food chain will provide a useful tool in the assessment of anthropogenic nutrient inputs.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 008355858

Download citation: RISBibTeXText

Related references

The use of radioactive isotopes to measure the transfer of materials in aquatic food chains. Marine Biology 18(4): 273-283, 1973

Vanadium Stable Isotopes in Biota of Terrestrial and Aquatic Food Chains. Environmental Science and Technology 55(8): 4813-4821, 2021

Uptake and distribution of the radioactive isotopes Zn65 and CO60 through aquatic food chains. Ege Univ Fac Sci Sci Rep 4: 3-23, 1962

Stable isotopes of nitrogen and carbon in an aquatic food web recently invaded by Dreissena polymorpha. Canadian Journal of Fisheries and Aquatic Sciences 53(6): 1445-1450, 1996

Estimating the trophic position of aquatic consumers in river food webs using stable nitrogen isotopes. Journal of the North American Benthological Society 26(2): 273-285, 2007

Stable isotopes of nitrogen and carbon in an aquatic food web recently invaded by ( Dreissena polymorpha ) (Pallas). Canadian Journal of Fisheries and Aquatic Sciences 53(6): 1445-1450, 1996

Trophic fractionation of carbon and nitrogen stable isotopes in Chironomus riparius reared on food of aquatic and terrestrial origin. Freshwater Biology ; 51(5): 878-886, 2006

Analysis of biomagnification of persistent organic pollutants in the aquatic food web of the Mekong Delta, South Vietnam using stable carbon and nitrogen isotopes. Chemosphere 72(1): 104-114, 2008

Using ratios of stable nitrogen isotopes to estimate bioaccumulation and flux of polychlorinated dibenzo p dioxins pcdds and dibenzofurans pcdfs in two food chains from the northern baltic. Environmental Toxicology and Chemistry 11(3): 331-345, 1992

Biokinetic food chain modeling of waterborne selenium pulses into aquatic food chains: Implications for water quality criteria. Integrated Environmental Assessment and Management 12(2): 230-246, 2016

Artificial radioactive isotopes in food chains. Voeding 47(11): 307-311, 1986

Optimization of aquatic-terrestrial ecosystem in relation to soil nitrogen status for the cultivation of fish and aquatic food crops of the Indian subtropics. Optimizing nitrogen management in food and energy production and environmental protection 2nd International Nitrogen Conference, Potomac, Maryland, USA, 14-18 October 2001: 130-134, 2002

Optimization of aquatic-terrestrial ecosystem in relation to soil nitrogen status for the cultivation of fish and aquatic food crops of the Indian subtropics. Thescientificworldjournal 1(Suppl 2): 130-134, 2001

Bioaccumulation of radioisotopes through aquatic food chains. Ecology 39(3): 530-535, 1958

Stable isotopes in aquatic food web of an artificial lagoon in the Hangzhou Bay, China. Chinese Journal of Oceanology and Limnology 28(3): 489-497, 2010