Firstwrkshnotes » History » Version 8
Corinna Gries, 03/10/2014 02:08 PM
1 | 1 | Corinna Gries | h1. Workshop Notes |
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3 | 3 | Corinna Gries | are on etherpad: https://epad.nceas.ucsb.edu/p/commdyn-20140105 |
4 | 4 | Corinna Gries | |
5 | 7 | Corinna Gries | h1. Metrics brainstorming: |
6 | 6 | Corinna Gries | |
7 | 7 | Corinna Gries | * what are you currently using |
8 | * what would you like to use |
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9 | * how widely is it used |
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10 | * can it be applied to different biological community datasets (sampling approach) |
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11 | * is it already coded {in R} |
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12 | 1 | Corinna Gries | |
13 | 8 | Corinna Gries | |
14 | 5 | Corinna Gries | h2. Metrics |
15 | 6 | Corinna Gries | |
16 | 5 | Corinna Gries | # *Diversity* (all of these are generally in R, mostly in vegan) |
17 | ## Jaccard index |
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18 | ## Simpson's diversity |
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19 | ## Shannons index |
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20 | ## Turnover - different ways to calculate |
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21 | ## Dominance |
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22 | ## Evenness |
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23 | ## Richness |
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24 | ## Rank abundance shift |
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25 | ## Beta diversity |
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26 | # *Community metrics/ordination* |
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27 | ## NMDS (vegan) |
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28 | ## PCA (vegan) |
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29 | ## Bray curtis (vegan) |
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30 | ## Variance tracking, quantify variability change |
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31 | # *Spatial* |
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32 | ## patch scale |
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33 | ## spatial autoregression |
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34 | ## meta community statistics |
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35 | # *Mechanistic models* |
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36 | ## MAR, needs driver matrix, problem auto-corelation, mostly fresh water or marine (Eli Holmes has state-space MAR in R implemented, not sure if it's on CRAN) http://cran.r-project.org/web/packages/MARSS/index.html |
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37 | ## MANOVA (vegan? Also, permanova is in vegan) |
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38 | ## interaction population models - inter specific competition (Ben Bolker's book and corresponding package) |
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39 | # *Food webs* |
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40 | ## connectance |
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41 | ## network analysis |
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42 | # *Traits/phylogentic* |
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43 | ## species aggregation (functional groups, trophic levels |
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44 | ## phylogenetic dispersion (ape etc. -- this stuff is all in R) |
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45 | ## Native/exotic |
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46 | # *Temporal indices* |
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47 | ## Variance ratio |
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48 | ## Mean-variance scaling |
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49 | ## Spectral analysis |
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50 | ## Regresssion windows (strucchange) |
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51 | # *null models* |
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52 | 4 | Corinna Gries | |
53 | 7 | Corinna Gries | h2. Issues: |
54 | 6 | Corinna Gries | |
55 | 5 | Corinna Gries | #length of time series relative to lifespan of organisms |
56 | 4 | Corinna Gries | WMI toolbox |
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58 | 5 | Corinna Gries | #high frequency data needed |
59 | 4 | Corinna Gries | sample too frequently then don't see signal, sample to far about miss all dynamics |
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61 | 5 | Corinna Gries | #type of variable being measured |
62 | 4 | Corinna Gries | abundance, biomass, production |
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65 | Rare species as background noise |
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66 | rank abundance curves back again |
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67 | Comparative analysis of small noise vs large noise systems. What drives differences? |
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68 | 8 | Corinna Gries | |
69 | h2. Coded in R |
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71 | * Richness/diversity metrics: http://cran.r-project.org/web/packages/vegan/index.html |
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72 | * Diversity metrics (alpha, beta, gamma): http://cran.r-project.org/web/packages/vegetarian/index.html |
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73 | * Hubble metrics: http://cran.r-project.org/web/packages/untb/index.html |
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74 | * Leading indicators, variance, autocorrelation, skew, heteroscedasticity: http://cran.at.r-project.org/web/packages/earlywarnings/index.html |
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76 | not yet coded: |
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77 | * state-space models and community level resilience |