Document of bibliographic reference 6281

BibliographicReference record

Type

Bibliographic resource

Type of document

Journal article

BibLvlCode

AS

Title

Harvesting, predation and competition effects on a red coral population

Abstract

A Corallium rubrum population, dwelling in the Ligurian Sea, has been under observation since 1987. Biometric descriptors of colonies (base diameter, weight, number of polyps, number of growth rings) have been recorded and correlated. The population size structure was obtained by distributing the colonies into diameter classes, each size class representing the average annual increment of diameter growth. The population was divided into ten classes, including a recruitment class. This size structure showed a fairly regular trend in the first four classes. The irregularity of survival in the older classes agreed with field observations on harvesting and predation. Demographic parameters such as survival, growth plasticity and natality coefficients were estimated from the experimental data. On this basis a discrete nonlinear model was implemented. The model is based on a kind of density-dependent Leslie matrix, where the feedback term only occurs in survival of the first class; the recruitment function is assumed to be dependent on the total biomass and related to inhibiting effects due to competitive interactions. Stability analysis was applied to steady-state solutions. Numerical simulations of population evolution were carried out under different conditions. The dynamics of settlement and the effects of disturbances such as harvesting, predation and environmental variability were studied.

WebOfScience code

https://www.webofscience.com/wos/woscc/full-record/WOS:A1992KR43100022

Bibliographic citation

Abbiati, M.; Buffoni, G.; Caforio, G.; Di Cola, G.; Santangelo, G. (1992). Harvesting, predation and competition effects on a red coral population. Neth. J. Sea Res. 30: 219-228. https://dx.doi.org/10.1016/0077-7579(92)90060-R

Topic

Marine

Is peer reviewed

true