Iannino, Alessandra ORCID: 0000-0001-6098-9840, Vosshage, Alexander Tim Ludwig, Weitere, Markus and Fink, Patrick (2021). Effects of phosphorus enrichment on the spatial heterogeneity of stream periphyton under uneven light conditions. Hydrobiologia, 848 (11). S. 2721 - 2730. DORDRECHT: SPRINGER. ISSN 1573-5117

Full text not available from this repository.

Abstract

Spatial variations in light and nutrient availability usually lead to a heterogeneous distribution of periphyton biomass within streams, but the effects of nutrient enrichment on periphyton heterogeneity are still poorly understood. We tested phosphorus enrichment effects on the heterogeneity of periphyton quantity and nutritional quality in an environment with uneven light conditions. Natural periphyton was grown at either high or low P supply in circular running water flumes, each of which was half shaded and half in light. After 3 weeks, periphyton biomass was significantly more heterogeneous at high P than at low P supply, as algal production increased with light only in the P-enriched treatment. However, periphyton C:P ratio was equally homogeneous in both P treatments, despite the light differences within each experimental flume. Although this outcome seems to contrast with the light:nutrient hypothesis, it is likely that high-quantity periphyton patches acquired more P and depleted the available P for the low-quantity patches, leading to an even C:P ratio within each flume. Therefore, in an environment with heterogeneous light availability, nutrient enrichment has the potential to increase the heterogeneity of periphyton quantity without affecting the heterogeneity of periphyton quality, due to periphyton patches not being independent of one another.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Iannino, AlessandraUNSPECIFIEDorcid.org/0000-0001-6098-9840UNSPECIFIED
Vosshage, Alexander Tim LudwigUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Weitere, MarkusUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fink, PatrickUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-576003
DOI: 10.1007/s10750-021-04591-0
Journal or Publication Title: Hydrobiologia
Volume: 848
Number: 11
Page Range: S. 2721 - 2730
Date: 2021
Publisher: SPRINGER
Place of Publication: DORDRECHT
ISSN: 1573-5117
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
FATTY-ACID-COMPOSITION; ENVIRONMENTAL HETEROGENEITY; ECOLOGICAL STOICHIOMETRY; NUTRIENTS; VARIABILITY; DYNAMICS; GROWTHMultiple languages
Marine & Freshwater BiologyMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/57600

Downloads

Downloads per month over past year

Altmetric

Export

Actions (login required)

View Item View Item