Universität zu Köln

Titocci, Jessica ORCID: 0000-0001-9157-1578, Bon, Melanie ORCID: 0000-0002-0558-4821 and Fink, Patrick ORCID: 0000-0002-5927-8977 (2022). Morpho-Functional Traits Reveal Differences in Size Fractionated Phytoplankton Communities but Do Not Significantly Affect Zooplankton Grazing. Microorganisms, 10 (1). BASEL: MDPI. ISSN 2076-2607

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Abstract

The recent emergence of approaches based on functional traits allows a more comprehensive evaluation of the role of functions and interactions within communities. As phytoplankton size and shape are the major determinants of its edibility to herbivores, alteration or loss of some morpho-functional phytoplankton traits should affect zooplankton grazing, fitness and population dynamics. Here, we investigated the response of altered phytoplankton morpho-functional trait distribution to grazing by zooplankton with contrasting food size preferences and feeding behaviors. To test this, we performed feeding trials in laboratory microcosms with size-fractionated freshwater phytoplankton (3 size classes, >30 mu m; 5-30 mu m and <5 mu m) and two different consumer types: the cladoceran Daphnia longispina, (generalist unselective filter feeder) and the calanoid copepod Eudiaptomus sp. (selective feeder). We observed no significant changes in traits and composition between the controls and grazed phytoplankton communities. However, community composition and structure varied widely between the small and large size fractions, demonstrating the key role of size in structuring natural phytoplankton communities. Our findings also highlight the necessity to combine taxonomy and trait-based morpho-functional approaches when studying ecological dynamics in phytoplankton-zooplankton interactions.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Titocci, Jessica UNSPECIFIED orcid.org/0000-0001-9157-1578 UNSPECIFIED Bon, Melanie UNSPECIFIED orcid.org/0000-0002-0558-4821 UNSPECIFIED Fink, Patrick UNSPECIFIED orcid.org/0000-0002-5927-8977 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-686584
DOI:	10.3390/microorganisms10010182
Journal or Publication Title:	Microorganisms
Volume:	10
Number:	1
Date:	2022
Publisher:	MDPI
Place of Publication:	BASEL
ISSN:	2076-2607
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language CALANOID COPEPODS; FUNCTIONAL DIVERSITY; FRESH-WATER; PLANKTON; PHOTOSYNTHESIS; CYANOBACTERIA; PRODUCTIVITY; PERCEPTION; RESERVOIR; ESTUARY Multiple languages Microbiology Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/68658