Evidence for a Self-Thinning Rule in Animals

Latto, John

doi:10.2307/3545867

Cited by 33 publications

(31 citation statements)

References 13 publications

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“…Furthermore, recent studies on ST in animals (Fréchette and Lefaivre 1990, Elliott 1993, Bohlin et al 1994, Latto 1994, Armstrong 1997 failed to provide a clear pattern of the ST function. Only Fréchette and Bacher (1998) and Alunno-Bruscia et al (2000) have described, from experimental studies and hypothetical populations (respectively), the general shape of the B-N diagram in mussels.…”

Section: Acknowledgmentsmentioning

confidence: 99%

“…Most studies on the B-N curves in animals have centered on the ST region (Hughes and Griffiths 1988, Fréchette and Lefaivre 1990, Fréchette et al 1992, Elliott 1993, Latto 1994, Fréchette et al 1996 and little is known about the general shape of the B-N curves in these populations. Furthermore, recent studies on ST in animals (Fréchette and Lefaivre 1990, Elliott 1993, Bohlin et al 1994, Latto 1994, Armstrong 1997 failed to provide a clear pattern of the ST function.…”

Section: Acknowledgmentsmentioning

confidence: 99%

“…Firstly, the main goal of self-thinning analysis has been to determine the competition limiting factor by comparing theoretical and observed exponents. Although the theoretical exponents depend on the environmental conditions and the population under study (Latto 1994, Keeley and Grant 1995, Steingrímsson and Grant 1999, some researchers still use the classical theoretical exponents, b ¼ À1/2 and b ¼ À1/3, in the discrimination process (Alunno-Bruscia et al 2000, Filgueira et al 2008. Second, based on the mathematical equivalence of the mass-density and biomass-density models, current studies have arbitrarily chosen one of these relationships for the study of the self-thinning process.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of self‐thinning models and estimation methods in multilayered sessile animal populations

et al. 2012

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Abstract. Self-thinning (ST) models have been widely used in the last decades to describe population dynamics under intraspecific competition in plant and animal communities. Nevertheless, their applicability in animal populations is subjected to the appropriate inclusion of space occupancy and energy requirements. Specifically, the disposition of gregarious sessile animals in complex matrices hampers the application of classical ST models. This paper reviews the self-thinning models, regression methods (central tendency and frontier techniques) and discrimination criteria currently applied for gregarious sessile species through application to the analysis of mussel populations (Mytilus galloprovincialis) grown in suspended culture. In addition, we propose to model the temporal evolution of site occupancy in the stochastic frontier function (SFF). Our results confirm that the number of layers should be included in the classical bidimensional ST model for the analysis of multilayered populations. The estimated parameters obtained by the different fitting techniques depended on the measurement method of the variables in the model. This, together with the proximity between the space and food selfthinning theoretical exponents (SST and FST, respectively) highlights the difficulty in discriminating the competition limiting factor (space/food) from the self-thinning exponent. On the other hand, the SFF provided congruent results for biomass and individual mass analysis, in contrast to the lack of robustness observed for the central tendency regression methods. Furthermore, the SFF approach allowed a dynamic interpretation of the ST process providing insight into the temporal evolution of site occupancy. These results highlight the suitability of the stochastic frontier approach in the analysis of self-thinning dynamics in sessile animal populations.

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Section: Acknowledgmentsmentioning

confidence: 99%

Section: Acknowledgmentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Evaluation of self‐thinning models and estimation methods in multilayered sessile animal populations

et al. 2012

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“…The 'self-thinning rule' (Begon et al 2006) has been used to describe the development of populations over time. This is manifested as a change in density as a consequence of an increase in mean weight (Begon et al 1986, Elliott 1993, Grant 1993, Latto 1994, Fréchette & Lefaivre 1995, Armstrong 1997, Steingrímsson & Grant 1999.…”

Section: Introductionmentioning

confidence: 99%

“…Probably the more appropriate terminology for the relationship in animal populations is a dynamic thinning line (see Begon et al 2006). Two thinning mechanisms that have been suggested for mobile organisms are competition for space and competition for food (Begon et al 1986, Elliott 1993, Grant 1993, Latto 1994, Armstrong 1997, Steingrímsson & Grant 1999. As an animal population develops over time, the mean body size increases and the density of the population declines through either death or emigration (Dunham et al 2000), producing a dynamic thinning line with a general slope of -4 ⁄ 3 (Begon et al 1986).…”

Section: Introductionmentioning

confidence: 99%

Dynamics of shallow-water juvenile flatfish nursery grounds: application of the self-thinning rule

Nash¹,

Geffen²,

Burrows³

et al. 2007

Mar. Ecol. Prog. Ser.

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Annual development of density and mean weight of juvenile plaice Pleuronectes platessa was examined at 2 nursery grounds (Port Erin Bay, Isle of Man, Irish Sea and Admucknish Bay, Firth of Lorne, west coast of Scotland) over a number of years. In both cases there was evidence of 'self-thinning' in the populations when the density was high, although in Port Erin Bay the slope suggested a relationship different from the standard -4 ⁄ 3 rule proposed for animal populations. The site specific dynamic thinning lines (dynamic carrying capacities) were consistent with the dynamic thinning line (-4 ⁄ 3 rule) for both populations. The 2 nursery grounds were different, with growth rates and densities generally higher on the Ardmucknish Bay nursery ground compared with Port Erin Bay. Similarly, the estimated total biomass of plaice was higher in Ardmucknish Bay than Port Erin Bay, but there was considerable inter-annual variation. Maximum plaice biomass generally occurred from August to September for both sites. In Port Erin Bay this coincided with the maximum consumption rates. The size structure was described using the Gini coefficient (G ) and the timing of size structure development by the centre of gravity (CG ). The size structure of the populations differed and in both cases varied during the season in response to settlement and mortality. Over the study periods, population density was only occasionally high enough to reach the site specific self-thinning line. This suggests that these populations rarely approached the carrying capacity of the nursery grounds.KEY WORDS: Flatfish · Nurseries · Self-thinning · Density · PlaiceResale or republication not permitted without written consent of the publisher

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Ecology of Individuals

Uchmański¹

2002

Modern Trends in Applied Terrestrial Ecology

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Evidence for a Self-Thinning Rule in Animals

Cited by 33 publications

References 13 publications

Evaluation of self‐thinning models and estimation methods in multilayered sessile animal populations

Evaluation of self‐thinning models and estimation methods in multilayered sessile animal populations

Dynamics of shallow-water juvenile flatfish nursery grounds: application of the self-thinning rule

Ecology of Individuals

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