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Cagle SE, Roelke DL. Relative roles of fundamental processes underpinning PEG dynamics in dimictic lakes as revealed by a self-organizing, multi-population plankton model. Ecol Modell 2021. [DOI: 10.1016/j.ecolmodel.2021.109793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Muhl RMW, Roelke DL, Zohary T, Moustaka-Gouni M, Sommer U, Borics G, Gaedke U, Withrow FG, Bhattacharyya J. Resisting annihilation: relationships between functional trait dissimilarity, assemblage competitive power and allelopathy. Ecol Lett 2018; 21:1390-1400. [PMID: 29992677 DOI: 10.1111/ele.13109] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 04/19/2018] [Accepted: 06/10/2018] [Indexed: 11/28/2022]
Abstract
Allelopathic species can alter biodiversity. Using simulated assemblages that are characterised by neutrality, lumpy coexistence and intransitivity, we explore relationships between within-assemblage competitive dissimilarities and resistance to allelopathic species. An emergent behaviour from our models is that assemblages are more resistant to allelopathy when members strongly compete exploitatively (high competitive power). We found that neutral assemblages were the most vulnerable to allelopathic species, followed by lumpy and then by intransitive assemblages. We find support for our modeling in real-world time-series data from eight lakes of varied morphometry and trophic state. Our analysis of this data shows that a lake's history of allelopathic phytoplankton species biovolume density and dominance is related to the number of species clusters occurring in the plankton assemblages of those lakes, an emergent trend similar to that of our modeling. We suggest that an assemblage's competitive power determines its allelopathy resistance.
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Affiliation(s)
- Rika M W Muhl
- Department of Wildlife and Fisheries Sciences, Texas A&M University, College Station, TX, 77843-2258, USA
| | - Daniel L Roelke
- Department of Wildlife and Fisheries Sciences, Texas A&M University, College Station, TX, 77843-2258, USA.,Department of Oceanography, Texas A&M University, College Station, TX, 77843, USA
| | - Tamar Zohary
- Kinneret Limnological Laboratory, P.O.B. 447, Migdal, 14950, Israel
| | - Maria Moustaka-Gouni
- School of Biology, Aristotle University of Thessaloniki, GR-541 24, Thessaloniki, Greece
| | - Ulrich Sommer
- GEOMAR, Helmholtz-Zentrum für Ozeanforschung Kiel, Experimentelle Ökologie I (Nahrungsnetze), Düsternbrooker Weg 20, D-24105, Kiel, Germany
| | - Gábor Borics
- Department of Tisza Research, MTA Centre for Ecological Research, 18/c, Bem square, Debrecen, 4026, Hungary.,MTA Centre for Ecological Research, GINOP Sustainable Ecosystems Group, 3. Klebelsberg Kuno str., H-8237, Tihany, Hungary
| | - Ursula Gaedke
- Institute of Biochemistry and Biology, University of Potsdam, Maulbeerallee 2, D-14469, Potsdam, Germany
| | - Frances G Withrow
- Department of Wildlife and Fisheries Sciences, Texas A&M University, College Station, TX, 77843-2258, USA
| | - Joydeb Bhattacharyya
- Department of Wildlife and Fisheries Sciences, Texas A&M University, College Station, TX, 77843-2258, USA
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Bhattacharyya J, Roelke DL, Muhl RM, Withrow FG. Exploitative competition of invaders differentially influences the diversity of neutral, lumpy and intransitive phytoplankton assemblages in spatially heterogeneous environments. Ecol Modell 2018. [DOI: 10.1016/j.ecolmodel.2017.12.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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