Population dynamics of a tropical palm: use of a genetic algorithm for inverse parameter estimation

Cropper, Wendell P.; Anderson, Patti J.

doi:10.1016/j.ecolmodel.2004.02.003

Cited by 19 publications

(5 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The short-term nature of many experiments limits their ability to evaluate the effects of harvest on plant demography or determine sustainable harvest levels, especially for long-lived species or when harvest impacts are likely to be cumulative. To overcome this, modeling has been used extensively to explore long-term effects of harvest on NTFP demography and population dynamics (Svenning and Macía, 2002;Cropper and Anderson, 2002;Endress et al, 2004a;Rodríguez-Buriticá et al, 2005). However, modeling alone is not sufficient to overcome a lack of empirical data, and modeling efforts can produced unrealistic or inaccurate results (Bierzychudek, 1999;Anderson and Putz, 2002).…”

Section: Introductionmentioning

confidence: 98%

Sustainability of a non-timber forest product: Effects of alternative leaf harvest practices over 6 years on yield and demography of the palm Chamaedorea radicalis

Endress

Gorchov

Berry

2006

Forest Ecology and Management

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 98%

Sustainability of a non-timber forest product: Effects of alternative leaf harvest practices over 6 years on yield and demography of the palm Chamaedorea radicalis

Endress

Gorchov

Berry

2006

Forest Ecology and Management

View full text Add to dashboard Cite

“…The role of density dependence is important in some tropical palm populations (Cropper & Anderson 2004), but there are limited data available. A study of the tropical palm Euterpe edulis showed that there was a clear effect of density on the population structure and demography (Matos et al .…”

mentioning

confidence: 99%

Population Dynamics of the Dioecious Amazonian Palm Mauritia flexuosa: Simulation Analysis of Sustainable Harvesting

2008

View full text Add to dashboard Cite

The dioecious, tropical palm Mauritia flexuosa has high ecological and economic value, but currently some wild populations are harvested excessively, which is likely to increase. In this study, we investigated the population dynamics of this important palm, the effects of harvesting, and suggested sustainable harvesting regimes. Data were collected from populations in the Ecuadorian Amazon that were assumed to be stable. We used a matrix population model to calculate the density‐independent asymptotic population growth rate (λ= 1.046) and to evaluate harvesting scenarios. Elasticity analysis showed that survival (particularly in the second and fifth size class) contributes more to the population growth rate, than growth and fecundity. To simulate a stable population at carrying capacity, density dependence was incorporated and applied to the seedling survival and growth parameters in the transition matrix. Harvesting scenarios were simulated with the density‐dependent population models to predict sustainable harvesting regimes for the dioecious palm. We simulated the removal of only female palms and showed how both sexes are affected with harvest intensities between 15 and 75 percent and harvest intervals of 1–15 yr. By assuming a minimum female threshold, we demonstrated a continuum of sustainable harvesting schedules for various intensities and frequencies for 100 yr of harvest. Furthermore, by setting the population model's λ= 1.00, we found that a harvest of 22.5 percent on a 20 yr frequency for the M. flexuosa population in Ecuador is consistent with a sustainable, viable population over time.

show abstract

“…In the absence of such data, inverse modelling approaches where population‐scale data, such as relative abundance of individuals of different sizes, or prevalence of the infection, are used to strengthen inference (e.g. Cropper & Anderson ) may provide some power, but parameter identifiability is likely to be a major challenge. Broader data on the ecology and life history of the species will also be important for robust prediction.…”

Section: Discussionmentioning

confidence: 99%

Opportunities and challenges ofIntegralProjectionModels for modelling host–parasite dynamics

Metcalf

Graham

Martinez

et al. 2015

Journal of Animal Ecology

View full text Add to dashboard Cite

Summary Epidemiological dynamics are shaped by and may in turn shape host demography. These feedbacks can result in hard to predict patterns of disease incidence. Mathematical models that integrate infection and demography are consequently a key tool for informing expectations for disease burden and identifying effective measures for control.A major challenge is capturing the details of infection within individuals and quantifying their downstream impacts to understand population‐scale outcomes. For example, parasite loads and antibody titres may vary over the course of an infection and contribute to differences in transmission at the scale of the population. To date, to capture these subtleties, models have mostly relied on complex mechanistic frameworks, discrete categorization and/or agent‐based approaches.Integral Projection Models (IPMs) allow variance in individual trajectories of quantitative traits and their population‐level outcomes to be captured in ways that directly reflect statistical models of trait–fate relationships. Given increasing data availability, and advances in modelling, there is considerable potential for extending this framework to traits of relevance for infectious disease dynamics.Here, we provide an overview of host and parasite natural history contexts where IPMs could strengthen inference of population dynamics, with examples of host species ranging from mice to sheep to humans, and parasites ranging from viruses to worms. We discuss models of both parasite and host traits, provide two case studies and conclude by reviewing potential for both ecological and evolutionary research.

show abstract

Population dynamics of a tropical palm: use of a genetic algorithm for inverse parameter estimation

Cited by 19 publications

References 17 publications

Sustainability of a non-timber forest product: Effects of alternative leaf harvest practices over 6 years on yield and demography of the palm Chamaedorea radicalis

Sustainability of a non-timber forest product: Effects of alternative leaf harvest practices over 6 years on yield and demography of the palm Chamaedorea radicalis

Population Dynamics of the Dioecious Amazonian Palm Mauritia flexuosa: Simulation Analysis of Sustainable Harvesting

Opportunities and challenges ofIntegralProjectionModels for modelling host–parasite dynamics

Contact Info

Product

Resources

About