scholarly journals Coexistence theory and the frequency-dependence of priority effects

2018 ◽  
Author(s):  
Po-Ju Ke ◽  
Andrew D. Letten
Keyword(s):  
Frequency Dependence ◽  
Priority Effects ◽  
Coexistence Theory ◽  
Positive Frequency Dependence ◽  
Positive Frequency

AbstractPriority effects encompass a broad suite of ecological phenomena. Several studies have suggested reframing priority effects around the stabilizing and equalizing concepts of coexistence theory. We show that the only compatible priority effects are those characterized by positive frequency dependence.

scholarly journals Applying modern coexistence theory to priority effects

2019 ◽  
Vol 116 (13) ◽  
pp. 6205-6210 ◽  
Author(s):  
Tess Nahanni Grainger ◽  
Andrew D. Letten ◽  
Benjamin Gilbert ◽  
Tadashi Fukami
Keyword(s):  
Growth Rates ◽  
Competitive Exclusion ◽  
Abiotic Factors ◽  
Priority Effects ◽  
Competitive Interactions ◽  
Competing Species ◽  
Coexistence Theory ◽  
Dependent Growth ◽  
Established Population ◽  
Positive Frequency

Modern coexistence theory is increasingly used to explain how differences between competing species lead to coexistence versus competitive exclusion. Although research testing this theory has focused on deterministic cases of competitive exclusion, in which the same species always wins, mounting evidence suggests that competitive exclusion is often historically contingent, such that whichever species happens to arrive first excludes the other. Coexistence theory predicts that historically contingent exclusion, known as priority effects, will occur when large destabilizing differences (positive frequency-dependent growth rates of competitors), combined with small fitness differences (differences in competitors’ intrinsic growth rates and sensitivity to competition), create conditions under which neither species can invade an established population of its competitor. Here we extend the empirical application of modern coexistence theory to determine the conditions that promote priority effects. We conducted pairwise invasion tests with four strains of nectar-colonizing yeasts to determine how the destabilizing and fitness differences that drive priority effects are altered by two abiotic factors characterizing the nectar environment: sugar concentration and pH. We found that higher sugar concentrations increased the likelihood of priority effects by reducing fitness differences between competing species. In contrast, higher pH did not change the likelihood of priority effects, but instead made competition more neutral by bringing both fitness differences and destabilizing differences closer to zero. This study demonstrates how the empirical partitioning of priority effects into fitness and destabilizing components can elucidate the pathways through which environmental conditions shape competitive interactions.

The Economics of Egg Trading: Mating Rate, Sperm Competition and Positive Frequency-Dependence

2014 ◽  
Vol 4 (4) ◽  
pp. 379-390 ◽  
Author(s):  
Jonathan M. Henshaw ◽  
Michael D. Jennions ◽  
Hanna Kokko
Keyword(s):  
Frequency Dependence ◽  
Sperm Competition ◽  
Mating Rate ◽  
Positive Frequency Dependence ◽  
Positive Frequency

Can positive frequency dependence facilitate plant coexistence?

2013 ◽  
Vol 28 (6) ◽  
pp. 317-318 ◽  
Author(s):  
Philip B. Greenspoon ◽  
Leithen K. M’Gonigle
Keyword(s):  
Frequency Dependence ◽  
Positive Frequency Dependence ◽  
Plant Coexistence ◽  
Positive Frequency

Positive Frequency Dependence in Graffiti: An Empirical Case Study of Cultural Evolution

2013 ◽  
Vol 13 (3-4) ◽  
pp. 287-311
Author(s):  
Julia A. Maddison ◽  
Michael Doebeli
Keyword(s):  
Frequency Dependence ◽  
Cultural Evolution ◽  
Positive Frequency Dependence ◽  
Positive Frequency

Positive frequency dependence undermines the success of restoration using historical disturbance regimes

2015 ◽  
Vol 18 (9) ◽  
pp. 883-891 ◽  
Author(s):  
Raelene Crandall ◽  
Tiffany M. Knight
Keyword(s):  
Frequency Dependence ◽  
Disturbance Regimes ◽  
Positive Frequency Dependence ◽  
Positive Frequency

scholarly journals Coexistence under positive frequency dependence

2001 ◽  
Vol 268 (1464) ◽  
pp. 273-277 ◽  
Author(s):  
Jane Molofsky ◽  
James D. Bever ◽  
Janis Antonovics
Keyword(s):  
Frequency Dependence ◽  
Positive Frequency Dependence ◽  
Positive Frequency

scholarly journals A bird pollinator shows positive frequency dependence and constancy of species choice in natural plant communities

Ecology ◽  
2016 ◽  
Vol 97 (11) ◽  
pp. 3110-3118 ◽  
Author(s):  
B. Schmid ◽  
H. Nottebrock ◽  
K. J. Esler ◽  
J. Pagel ◽  
K. Böhning-Gaese ◽  
...  
Keyword(s):  
Frequency Dependence ◽  
Plant Communities ◽  
Natural Plant ◽  
Positive Frequency Dependence ◽  
Positive Frequency

scholarly journals Mycorrhizal feedbacks generate positive frequency dependence accelerating grassland succession

2018 ◽  
Vol 107 (2) ◽  
pp. 622-632 ◽  
Author(s):  
Liz Koziol ◽  
James D. Bever
Keyword(s):  
Frequency Dependence ◽  
Positive Frequency Dependence ◽  
Positive Frequency

scholarly journals When rarity has costs: coexistence under positive frequency-dependence and environmental stochasticity

2017 ◽  
Author(s):  
Sebastian J. Schreiber ◽  
Masato Yamamichi ◽  
Sharon Y. Strauss
Keyword(s):  
Reproductive Success ◽  
Frequency Dependence ◽  
Resource Competition ◽  
Extinction Risk ◽  
Niche Overlap ◽  
Environmental Stochasticity ◽  
Environmental Fluctuations ◽  
Positive Frequency Dependence ◽  
Demographic Responses ◽  
Positive Frequency

AbstractStable coexistence relies on negative frequency-dependence, in which rarer species invading a patch benefit from a lack of conspecific competition experienced by residents. In nature, however, rarity can have costs, resulting in positive frequency-dependence (PFD) particularly when species are rare. Many processes can cause positive frequency-dependence, including a lack of mates, mutualist interactions, and reproductive interference from heterospecifics. When species become rare in the community, positive frequency-dependence creates vulnerability to extinction, if frequencies drop below certain thresholds. For example, environmental fluctuations can drive species to low frequencies where they are then vulnerable to PFD. Here, we analyze deterministic and stochastic mathematical models of two species interacting through both PFD and resource competition in a Chessonian framework. Reproductive success of individuals in these models is reduced by a product of two terms: the reduction in fecundity due to PFD, and the reduction in fecundity due to competition. Consistent with classical coexistence theory, the effect of competition on individual reproductive success exhibits negative frequency-dependence when individuals experience greater intraspecific competition than interspecific competition i.e., niche overlap is less than one. In the absence of environmental fluctuations, our analysis reveals that (1) a synergistic effect of PFD and niche overlap that hastens exclusion, (2) trade-offs between susceptibility to PFD and maximal fecundity can mediate coexistence, and (3) coexistence, when it occurs, requires that neither species is initially rare. Analysis of the stochastic model highlights that environmental fluctuations, unless perfectly correlated, coupled with PFD ultimately drive one species extinct. Over any given time frame, this extinction risk decreases with the correlation of the demographic responses of the two species to the environmental fluctuations, and increases with the temporal autocorrelation of these fluctuations. For species with overlapping generations, these trends in extinction risk persist despite the strength of the storage effect decreasing with correlated demographic responses and increasing with temporal autocorrelations. These results highlight how the presence of PFD may alter the outcomes predicted by modern coexistence mechanisms.

Sign in / Sign up

Export Citation Format

Share Document