dispersal_fixed_weighted

Dispersal function that uses a fixed sized kernel and weighted dispersal towards areas that have a higher weight.
Use case are e.g. animals that can sense their surroundings.

internal

Build spatially and temporally explicit
process-based species distribution models, that can include an arbitrary
number of environmental factors, species and processes including metabolic
constraints and species interactions. The focus of the package is simulating
populations of one or multiple species in a grid-based landscape and studying
the meta-population dynamics and emergent patterns that arise from the
interaction of species under complex environmental conditions. It
provides functions for common ecological processes such as
negative exponential, kernel-based dispersal (see
Nathan et al. (2012) <doi:10.1093/acprof:oso/9780199608898.003.0015>),
calculation of the environmental suitability based on cardinal values (
Yin et al. (1995) <doi:10.1016/0168-1923(95)02236-Q>, simplified by
Yan and Hunt (1999) <doi:10.1006/anbo.1999.0955> see eq: 4), reproduction in
form of an Ricker model (see Ricker (1954) <doi:10.1139/f54-039> and
Cabral and Schurr (2010) <doi:10.1111/j.1466-8238.2009.00492.x>),
as well as metabolic scaling based on the metabolic theory of ecology
(see Brown et al. (2004) <doi:10.1890/03-9000> and
Brown, Sibly and Kodric-Brown (2012)
<doi:10.1002/9781119968535.ch>).

Stefan Fallert

metaRange

Framework to Build Mechanistic and Metabolic Constrained Species
Distribution Models

Lea Li

Juliano Sarmento Cabral

Tyler Morgan-Wall

Bavarian Ministry of Science and Arts (bayklif) 

Deutsche Bundesstiftung Umwelt (DBU) 

dispersal_fixed_weighted function

<dl><dt>abundance</dt>
<dd><code>&lt;numeric matrix&gt;</code> Values need to be non-negative.</dd>
<dt>weights</dt>
<dd><code>&lt;numeric matrix&gt;</code> Values need to non-missing and between 0 and 1 for the result to make sense.
Needs to have same size as abundance.</dd>
<dt>dispersal_kernel</dt>
<dd><code>&lt;numeric matrix&gt;</code> Dispersal kernel. Needs to have an odd size.</dd></dl>

Arguments

Weighted and fixed sized dispersal — dispersal_fixed_weighted

<dl>

<dt>abundance</dt>
<dd><code>&lt;numeric matrix&gt;</code> Values need to be non-negative.</dd>


<dt>weights</dt>
<dd><code>&lt;numeric matrix&gt;</code> Values need to non-missing and between 0 and 1 for the result to make sense.
Needs to have same size as abundance.</dd>


<dt>dispersal_kernel</dt>
<dd><code>&lt;numeric matrix&gt;</code> Dispersal kernel. Needs to have an odd size.</dd>

</dl>

dispersal_fixed_weighted: Weighted and fixed sized dispersal

Description

Usage

Value

Arguments