Function to describe changes in area through time.
island_area(timeval, total_time, area_pars, peak, island_ontogeny, sea_level)Numeric defining current time of simulation.
Numeric defining the length of the simulation in time units.
A named list containing area and sea level parameters as
created by create_area_pars():
[1]: maximum area
[2]: current area
[3]: value from 0 to 1 indicating where in the island's history the peak area is achieved
[4]: total island age
[5]: amplitude of area fluctuation from sea level
[6]: frequency of sine wave of area change from sea level
[7]: angle of the slope of the island
A numeric value specifying the peakiness (or shaprness) of the
ontogeny curve. Higher values imply peakier ontogeny. This value is
internally calculated by calc_peak() given the area at the
present and the area_pars.
In DAISIE_sim_time_dep(),
DAISIE_ML_CS and plotting a string describing the type of
island ontogeny. Can be "const", "beta" for a beta function
describing area through time.
In all other functions a
numeric describing the type of island ontogeny. Can be 0 for
constant, 1 for a beta function describing area through time. In ML
functions island_ontogeny = NA assumes constant ontogeny. Time
dependent estimation is not yet available as development is still ongoing.
Will return an error if called in that case.
In DAISIE_sim_time_dep() and plotting a
string describing the type of sea level. Can be "const" or
"sine" for a sine function describing area through time.
In all other functions a numeric describing the type of sea level. Can
be 0 for constant, 1 for a sine function describing area
through time.
Pedro Neves, Joshua Lambert
Valente, Luis M., Rampal S. Etienne, and Albert B. Phillimore. "The effects of island ontogeny on species diversity and phylogeny." Proceedings of the Royal Society of London B: Biological Sciences 281.1784 (2014): 20133227.
Other rate calculations:
DAISIE_plot_area(),
get_ana_rate(),
get_ext_rate(),
get_immig_rate(),
island_area_vector(),
update_max_rates(),
update_rates()