Ecological stoichiometry of indirect grazer effects on periphyton nutrient content.

Ecological stoichiometry of indirect grazer effects on periphyton nutrient content. Research Abstract Details 

Research Abstract Table of Contents

Jump to the:

Ecological stoichiometry of indirect grazer effects on periphyton nutrient content. Abstract Text:

Ecological stoichiometry has been successful in enhancing our understanding of trophic interactions between consumer and prey species. Consumer and prey dynamics have been shown to depend on the nutrient composition of the prey relative to the nutrient demand of the consumer. Since most experiments on this topic used a single consumer species, little is known about the validity of stoichiometric constraints on trophic interactions across consumers and ecosystems. We conducted a quantitative meta-analysis on grazer-periphyton experiments to test (1) if benthic grazers have consistent effects on the nutrient composition of their prey, and (2) whether these effects can be aligned to the nutrient stoichiometry of grazer and periphyton, other environmental factors, or experimental constraints. Grazers significantly lowered periphyton C:N and C:P ratios, indicating higher N- and P-content of grazed periphyton across studies. Grazer presence on average increased periphyton N:P ratios, but across studies the effect size did not differ significantly from zero. The sign and strength of grazer effects on periphyton nutrient ratios was strongly dependent on the nutrient content of grazers and their food, but also on grazer biomass, the amount of biomass removal and water column nutrients. Grazer with low P-content tended to reduce periphyton P-content, whereas grazers with high P-content increased periphyton P-content. This result suggests that low grazer P-content can be an indication of physiological P-limitation rather than a result of having relatively low and fixed P-requirements. At the across-system scale of this meta-analysis, predictions from stoichiometric theory are corroborated, but the plasticity of the consumer nutrient composition has to be acknowledged.

Ecological stoichiometry of indirect grazer effects on periphyton nutrient content. Publishing Authors By Initials

For similar abstracts research abstracts see: abstracts research

PUBMED ID PMID:

MEDLINE DATE:

Ecological stoichiometry of indirect grazer effects on periphyton nutrient content. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Oecologia

VOLUME: 155

Page Numbers: 619-30

Journal Abbreviation: Oecologia

ISSN: 0029-8549

DAY: 5

MONTH: 12

YEAR: 2007

Ecological stoichiometry of indirect grazer effects on periphyton nutrient content. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 150372

Ecological stoichiometry of indirect grazer effects on periphyton nutrient content. Keywords Mesh Terms:

KEYWORDS:

MESH TERMS:

Chemical & Substance for Abstract: Ecological stoichiometry of indirect grazer effects on periphyton nutrient content. Information

Substance Name:

Registry Number:

Grant and Affiliation Information for Ecological stoichiometry of indirect grazer effects on periphyton nutrient content.

AFFILIATION: Institute for Botany, University of Cologne, Gyrhofstrasse 15, 50931, Cologne, Germany, helmut.hillebrand@uni-koeln.de.

Country: Germany

AGENCY:

GRANT:

ACRONYM:

MEDLINETA: Oecologia

REFSOURCE:

DATABASENAME:

ACCESSION NUMBER:

Number Hits: 0

Ecological stoichiometry of indirect grazer effects on periphyton nutrient content Related Publications

• Acute and delayed effects of the neonicotinoid insecticide thiacloprid on seven freshwater arthropods.
• Aquatic passive sampling of a short-term thiacloprid pulse with the Chemcatcher: Impact of biofouling and use of a diffusion-limiting membrane on the sampling rate.
• Clinical, post mortem and virological findings after simultaneous inoculation of pigs with hog cholera and bovine viral diarrhoea virus.
• Clinical, virological and serological findings after intranasal inoculation of pigs with bovine viral diarrhoea virus and subsequent intranasal challenge with hog cholera virus.
• Differentiation of hog cholera and bovine virus diarrhoea viruses in pigs using monoclonal antibodies.
• Ecological stoichiometry of indirect grazer effects on periphyton nutrient content.
• Experimental transplacental transmission of hog cholera virus in pigs. V. Immunopathological findings in newborn pigs.
• Herpesvirus in harbour seals (Phoca vitulina): transmission in homologous host.
• Incidence of classical swine fever (CSF) in wild boar in a densely populated area indicating CSF virus persistence as a mechanism for virus perpetuation.
• Investigations on course and outcome of phocine distemper virus infection in harbour seals (Phoca vitulina) exposed to polychlorinated biphenyls. Virological and serological investigations.
• Isolation of parvovirus from kidney cell cultures of gnotobiotic piglets.
• Kidney lesions in cattle persistently infected with bovine viral diarrhoea virus.
• Long-term stream invertebrate community alterations induced by the insecticide thiacloprid: Effect concentrations and recovery dynamics.
• Mapping ecological risk of agricultural pesticide runoff.
• Morbillivirus infections of seals during the 1988 epidemic in the Bay of Heligoland: III. Transmission studies of cell culture-propagated phocine distemper virus in harbour seals (Phoca vitulina) and a grey seal (Halichoerus grypus): clinical, virological
• Pathomorphological and immunohistological findings in progeny of goats experimentally infected with pestiviruses.
• Potential of 11 pesticides to initiate downstream drift of stream macroinvertebrates.
• Prevalence of neutralizing antibody to porcine enterovirus serotype 2 strain BHZP/3 and its possible relation to atrophic rhinitis in pigs.
• Prolonged persistence of cytopathogenic bovine viral diarrhea virus (BVDV) in a persistently viremic cattle.
• Using fat-saturated proton density-weighted MR imaging to evaluate articular cartilage.
• Variation in neuropathogenicity in sheep fetuses transplacentally infected with non-cytopathogenic and cytopathogenic biotypes of bovine-virus diarrhoea virus.
• [Demonstration of immune complex components in kidney glomeruli in bovine virus diarrhea mucosal disease]
• [Familial investigation on congenital subchondral cartilage ossification disorder.]
• [Morphological development of the virus of rhinotracheitis infectiosa in cattle.]
• [Multiplication kinetics and usefulness of a highly cytopathogenic VD-MD virus strain in diagnostic studies using the microtiter method)]
• [Pathogenesis of viral diarrhea and mucosal disease in cattle, using a heterotypic immunofluorescence technic]
• [Studies with the immunofluorescence method for the laboratory diagnosis of European hog cholera]
• [Virologic diagnosis of European swine fever]