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The use of Gompertz models in growth analyses, and new Gompertz-model approach: An addition to the Unified-Richards family
The Gompertz model is well known and widely used in many aspects of biology. It has been frequently used to describe the growth of animals and plants, as well as the number or volume of bacteria and… Expand
Habitat size and number in multi-habitat landscapes: a model approach based on species-area curves
- E. Tjørve
- 1 February 2002
This paper discusses species diversity in simple multi-habitat environments. Its main purpose is to present simple mathematical and graphical models on how landscape patterns affect species numbers.… Expand
The species-area relationship, self-similarity, and the true meaning of the z-value.
The power model, S= cA(z) (where S is number of species, A is area, and c and z are fitted constants), is the model most commonly fitted to species-area data assessing species diversity. We use the… Expand
Shapes and functions of bird-growth models: how to characterise chick postnatal growth.
We compare four candidate models (logistic, Gompertz, von Bertalanffy, and extreme value function) for modelling the growth of birds. We fitted the models to two empirical data sets of chick growth… Expand
Properties of first-time vs. repeat visitors: lessons for marketing Norwegian ski resorts
This paper explores the potential in foreign markets for winter tourism in Norway and discusses the influencing factors explaining why foreign tourists visit and revisit Norway on ski vacations. In a… Expand
Geographic changes in the Aegean Sea since the Last Glacial Maximum: Postulating biogeographic effects of sea-level rise on islands
Abstract In order to assess how the last sea level rise affected the Aegean archipelago, we quantified the magnitude and rate of geographic change for the Aegean islands during the last… Expand
Towards a glacial-sensitive model of island biogeography
Although the role that Pleistocene glacial cycles have played in shaping the present biota of oceanic islands world-wide has long been recognized, their geographical, biogeographical and ecological… Expand
Quantifying surface‐area changes of volcanic islands driven by Pleistocene sea‐level cycles: biogeographical implications for the Macaronesian archipelagos
Aim We assessed the biogeographical implications of Pleistocene sea-level fluctuations on the surface area of Macaronesian volcanic oceanic islands. We quantified the effects of sea-level cycles on… Expand
A proposed family of Unified models for sigmoidal growth
The four-parameter Unified Richards model has been applied to the growth of different animal taxa. Traditionally researchers of animal growth have favoured three-parameter models such as the… Expand
Brown bear Ursus arctos scavenging patterns
The brown bear Ursus arctos L. has long been believed to skin its prey and to leave behind a large hide and an unmolested skeleton. Camera monitoring in nature and observations in zoos revealed that… Expand