Results 61 to 70 of about 3,056,753 (292)
Revista CientíficaIn this study, a comparison of traditional growth methods (length-weight relationships and von Bertalanffy growth function) with artificial neural networks in growth models was carried out in the growth of 783 specimens of Capoeta umbla from the Munzur ...
Ebru Ifakat Ozcan, Osman Serdar
doaj +1 more source
A Two-Step Growth Curve: Approach to the von Bertalanffy and Gompertz Equations
, 2016 Many curves have been proposed and debated to model individual growth of marine invertebrates. Broadly, they fall into two classes, first order (e.g. von Bertalanffy) and sigmoidal (e.g. Gompertz).
Laura Rogers-Bennett, D. Rogers
semanticscholar +1 more source
A Systems Thinking Approach to Mitigating Xenophobia in South Africa for Socio‐Economic Development
Systems Research and Behavioral Science, EarlyView.ABSTRACT Economic growth in South Africa has led to significant influx of migrants, especially from the African continent, searching for greener pastures. The influx of migrants in South Africa has given rise to competition for scarce resources between locals and migrants.
Y. S. Nyam, O. Kunguma, O. T. Selelo
wiley +1 more source
Nauplius, 2021 The present investigation aimed to estimate the individual growth and mortality of an invasive species found in the estuarine region of Patos Lagoon (Southern Brazil).
Diego Schuch Rodrigues +1 more
doaj +1 more source
The western blue groper (Achoerodus gouldii), a protogynous hermaphroditic labrid with exceptional longevity, late maturity, slow growth, and both late maturation and sex change [PDF]
, 2009 The western blue groper (Achoerodus gouldii) is shown to be a temperate protogynous hermaphrodite, which spawns between early winter and mid-spring. Because A. gouldii changes body color at about the time of sex change, its color can be used as a proxy
Coulson, Peter G. +3 more
core +1 more source
The Control–Entropy Paradox: Modeling the Thermodynamic Limits of Environmental Governance
Systems Research and Behavioral Science, EarlyView.ABSTRACT Environmental governance often seeks to reduce disorder, yet the energetic and material costs of control are overlooked. This article presents the Control–Entropy Paradox, developing a formal systems model and a conceptual extension of governance theory.
Sibongiseni B. Hlabisa
wiley +1 more source
International Journal of General Systems, 2015 Bertalanffy’s so-called “general system theory” (GST) and cybernetics were and are often confused: this calls for clarification. In this article, Bertalanffy’s conceptions and ideas are compared with those developed in cybernetics in order to investigate
M. Drack, David Pouvreau
semanticscholar +1 more source
Growth Curves of Four Species of Commercially Valuable Freshwater Mussels (Bivalva: Unionidae) [PDF]
, 2000 North American freshwater mussels (Bivalvia: Unionidae) have been exploited commercially for over 100 years and have been regulated using shell size limits and/or harvest seasons.
Christian, Alan D. +6 more
core +1 more source
Density-Dependence as a Size-Independent Regulatory Mechanism
, 2005 The growth function of populations is central in biomathematics. The main dogma is the existence of density dependence mechanisms, which can be modelled with distinct functional forms that depend on the size of the population.
Allee +42 more
core +2 more sources
Dietary resilience of coral reef fishes to habitat degradation
Journal of Animal Ecology, EarlyView.Metabarcoding of gut contents shows that two common benthic‐feeding reef fishes with different feeding stratgies—a butterflyfish (Chaetodon capistratus) and a hamlet (Hypoplectrus puella)—shift diets on degraded reefs. These shifts mirror contrasting patterns in body condition: butterflyfish showed strong individual variation, whereas condition was ...
Friederike Clever +9 more
wiley +1 more source