Universität zu Köln

Jovanovska, Elena, Hauffe, Torsten ORCID: 0000-0001-5711-9457, Stelbrink, Bjoern, Cvetkoska, Aleksandra ORCID: 0000-0002-9812-8816, Levkov, Zlatko ORCID: 0000-0002-1184-2356, Wagner, Bernd ORCID: 0000-0002-1369-7893, Lacey, Jack H. ORCID: 0000-0002-6329-2149, Ognjanova-Rumenova, Nadja, Hamilton, Paul B., Brandenburg, Karen M., Albrecht, Christian and Wilke, Thomas ORCID: 0000-0001-8263-7758 (2022). Environmental filtering drives assembly of diatom communities over evolutionary time-scales. Glob. Ecol. Biogeogr., 31 (5). S. 954 - 968. HOBOKEN: WILEY. ISSN 1466-8238

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Abstract

Aim Ecological communities are structured through the interplay of deterministic assembly processes such as competition and environmental filtering. Whereas the drivers of spatial community structure are frequently studied in extant communities, little is known about the relative importance of assembly processes in response to environmental factors over evolutionary time-scales. Here, we use an integrative framework to unravel community assembly processes since the inception of a long-lived lake ecosystem. Location Lake Ohrid. Time period From lake formation 1.36 million years ago to the present. Major taxa studied Planktonic diatoms. Methods We constructed a dated phylogeny of extant and extinct diatoms and collected trait data for 380 fossil communities to quantify phylogenetic community structure and functional richness and to determine the relative importance of deterministic assembly processes over time. We then used regression analysis to correlate the phylogenetic community structure with palaeoenvironmental and intrinsic biological predictors and to identify primary drivers of assembly processes. Results Our results suggest a dense packing of niche space with higher species richness and co-occurrence of closely related species. There are only two short episodes in the very recent past dominated by distantly related taxa. We found distinct changes in phylogenetic community structure upon speciation or extinction events and an increase in mean community relatedness over time. Main conclusions Our finding of closely related co-occurring species implies environmental filtering as the primary assembly mechanism, with a minor but increasingly important role of competition towards the present, driven by evolutionary dynamics. Such an increase in the relative contribution of competition to the assembly of communities in relation to the aging of an insular ecosystem, together with a denser packing of morphospace in the early phase of system ontogeny is compatible with ecological predictions according to the theory of island biogeography.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Jovanovska, Elena UNSPECIFIED UNSPECIFIED UNSPECIFIED Hauffe, Torsten UNSPECIFIED orcid.org/0000-0001-5711-9457 UNSPECIFIED Stelbrink, Bjoern UNSPECIFIED UNSPECIFIED UNSPECIFIED Cvetkoska, Aleksandra UNSPECIFIED orcid.org/0000-0002-9812-8816 UNSPECIFIED Levkov, Zlatko UNSPECIFIED orcid.org/0000-0002-1184-2356 UNSPECIFIED Wagner, Bernd UNSPECIFIED orcid.org/0000-0002-1369-7893 UNSPECIFIED Lacey, Jack H. UNSPECIFIED orcid.org/0000-0002-6329-2149 UNSPECIFIED Ognjanova-Rumenova, Nadja UNSPECIFIED UNSPECIFIED UNSPECIFIED Hamilton, Paul B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Brandenburg, Karen M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Albrecht, Christian UNSPECIFIED UNSPECIFIED UNSPECIFIED Wilke, Thomas UNSPECIFIED orcid.org/0000-0001-8263-7758 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-693078
DOI:	10.1111/geb.13471
Journal or Publication Title:	Glob. Ecol. Biogeogr.
Volume:	31
Number:	5
Page Range:	S. 954 - 968
Date:	2022
Publisher:	WILEY
Place of Publication:	HOBOKEN
ISSN:	1466-8238
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language LAKE OHRID MACEDONIA; ANCIENT LAKES; R PACKAGE; ECOLOGY; DIVERSIFICATION; RELATEDNESS; VARIABILITY; PHYLOGENIES; RESILIENCE; DIVERSITY Multiple languages Ecology; Geography, Physical Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/69307