Download presentation
Presentation is loading. Please wait.
Published byBlaze Porter Modified over 9 years ago
1
IBM meets traditional population ecology IBM behavioural patterns life history variation population level responses (ecology, genetics) What are the characteristics of population-level responses to different IBM scenarios? Analytical tools
2
IBM meets traditional population ecology IBM individual behaviour patterns individual life history variation population level responses (ecology, genetics) Matrix population model: n t+1 = A n t abundance vector projection matrix sensitivity Caswell, H (2001) Matrix population models
3
IBM meets traditional population ecology IBM individual behaviour patterns individual life history variation population level responses (ecology, genetics) Abundance in time and space: synchrony structural dynamics density dependence Matrix population model: n t+1 = A n t abundance vector projection matrix sensitivity Caswell, H (2001) Matrix population models
4
IBM meets traditional population ecology Analysis of patterns: fox abundance in time and space IBM space time (years) abundance regional 34 IBM time Many IBM modellers look for cyclic population level responses (?)...
5
IBM meets traditional population ecology Analysis of patterns: fox abundance in time and space time (years) abundance regional time (years) abundance local IBM space IBM time
6
IBM meets traditional population ecology Analysis of patterns: fox abundance in time and space time (years) abundance time (years) abundance regional local IBM space IBM time
7
IBM meets traditional population ecology Analysis of patterns: fox abundance in time and space cross correlation distance spatial fox dynamics IBM space migration, predation and climate
8
IBM meets traditional population ecology Analysis of patterns: fox abundance in time and space time (years) abundance local temporal fox dynamics: fluctuations lag (years) correlation lag (years) 24 ACF
9
IBM meets traditional population ecology Analysis of patterns: fox abundance in time and space time (years) abundance local correlation lag (years) spectrum frequency (1/years) 22 6 2 24 temporal fox dynamics: fluctuations
10
IBM meets traditional population ecology Analysis of patterns: fox abundance in time and space time (years) abundance local temporal fox dynamics: structure X t =f (X t-1,..., X t-n ) X t = 1.14X t-1 – 0.48X t-2 X t = 0.66X t-1 +0.22X t-2 autoregression Royama, T (1992) Analytical population dynamics Tong, H (1990) Non-linear time series
11
IBM meets traditional population ecology Fox abundance in time and space: connecting patterns and processes intra-specific inter-specific X t =f (X t-1,..., X t-n ) fox AR structure:
12
IBM meets traditional population ecology Fox abundance in time and space: connecting patterns and processes X t =f (X t-1 ) intra-specific inter-specific fox AR structure:
13
IBM meets traditional population ecology Fox abundance in time and space: connecting patterns and processes X t =f (X t-1, X t-2 ) intra-specific inter-specific fox AR structure:
14
IBM meets traditional population ecology Fox abundance in time and space: connecting patterns and processes X t =f (X t-1, X t-2 ) intra-specific inter-specific fox AR structure:
15
IBM meets traditional population ecology Fox abundance in time and space: connecting patterns and processes intra-specific inter-specific X t =f (X t-1, X t-2, X t-3 ) dimension indicates no of trophic interactions fox AR structure:
16
IBM meets traditional population ecology Analysis of patterns: fox abundance in time and space time (years) abundance local X t = 0.66X t-1 +0.22X t-2 X t = 1.14X t-1 – 0.48X t-2 2-dimensional AR models
17
IBM meets traditional population ecology Bornholm Jylland Fyn Sjælland time (years) abundance local X t = 0.66X t-1 +0.22X t-2 X t = 1.14X t-1 – 0.48X t-2 Indeed,...
18
IBM meets traditional population ecology The interface between IBM and analytical population ecology may...... provide information on how populations will behave – in time and space – over a range of IBM scenarios... focus on key variables potentially responsible, otherwise muddled by the numerous IBM variables and their syngistic effects
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.