Last updated: 2021-09-14

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Knit directory: soil_alcontar/

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Introduction

  • Analysis of resilience of soil propierties.
  • Only for Autumn treatment (i.e. zona == “P”; zona == “NP”)
  • Interpret zona as “grazing effect”:
    • zona == “P” corresponds to Browsing
    • zona == “NP” corresponds to No Browsing

Prepare data

raw_soil <- readxl::read_excel(here::here("data/Resultados_Suelos_2018_2021_v2.xlsx"), 
    sheet = "SEGUIMIENTO_SUELOS_sin_ouliers") %>% janitor::clean_names() %>% mutate(treatment_name = case_when(str_detect(geo_parcela_nombre, 
    "NP_") ~ "Autumn Burning / No Browsing", str_detect(geo_parcela_nombre, "PR_") ~ 
    "Spring Burning / Browsing", str_detect(geo_parcela_nombre, "P_") ~ "Autumn Burning / Browsing"), 
    zona = case_when(str_detect(geo_parcela_nombre, "NP_") ~ "QOt_NP", str_detect(geo_parcela_nombre, 
        "PR_") ~ "QPr_P", str_detect(geo_parcela_nombre, "P_") ~ "QOt_P"), fecha = lubridate::ymd(fecha), 
    pre_post_quema = case_when(pre_post_quema == "Prequema" ~ "0 preQuema", pre_post_quema == 
        "Postquema" ~ "1 postQuema"))
  • Compute date as months after fire
autumn_fire <- lubridate::ymd("2018-12-18")

soil <- raw_soil %>% filter(zona != "QPr_P") %>% mutate(zona = as.factor(zona)) %>% 
    mutate(meses = as.factor(case_when(fecha == "2018-12-11" ~ as.character("-1"), 
        fecha != "2018-12-11" ~ as.character(lubridate::interval(autumn_fire, lubridate::ymd(fecha))%/%months(1))))) %>% 
    mutate(pastoreo = as.factor(case_when(zona == "QOt_P" ~ "Browsing", zona == "QOt_NP" ~ 
        "No Browsing"))) %>% relocate(pastoreo, fecha, meses) %>% dplyr::select(-pre_post_quema, 
    -tratamiento)

xtabs(~meses + pastoreo, data = soil)
     pastoreo
meses Browsing No Browsing
   -1       24          24
   0        24          24
   22       25          25
   29       24          24

Compute resilience

For each soil variable we compute the Resilience value according to the following equation (sensu LLoret et al. 2011): \[Resilience = preFire / postFire\] - We computed the resilience value for each time step: just after fire (month=0) and after 22 and 29 months.

  • The we groupped soil variables by treatment (Browsing vs No Browsing)

  • Finally we explored graphically the results.

computeResilience <- function(df, variable) {
    df %>% mutate(replica = str_remove(geo_suelos_nombre, "Q|_Q")) %>% dplyr::select(one_of("pastoreo", 
        "meses", "geo_parcela_nombre", "replica", variable)) %>% pivot_wider(values_from = one_of(variable), 
        names_from = meses, names_prefix = "t") %>% filter(!(str_detect(replica, 
        "E3"))) %>% rename(control = `t-1`) %>% # resilience r = post/pre
    mutate(res.0 = t0/control, res.22 = t22/control, res.29 = t29/control) %>% dplyr::select(pastoreo, 
        geo_parcela_nombre, res.0, res.22, res.29) %>% pivot_longer(res.0:res.29, 
        names_to = "resilience") %>% mutate(myvar = variable)
}


x <- bind_rows(computeResilience(soil, "humedad"), computeResilience(soil, "n_nh4"), 
    computeResilience(soil, "n_no3"), computeResilience(soil, "fe_percent"), computeResilience(soil, 
        "k_percent"), computeResilience(soil, "mg_percent"), computeResilience(soil, 
        "na_percent"), computeResilience(soil, "n_percent"), computeResilience(soil, 
        "c_percent"), computeResilience(soil, "c_n"), computeResilience(soil, "cic"), 
    computeResilience(soil, "p"), computeResilience(soil, "mo"), computeResilience(soil, 
        "p_h_agua_eez"), computeResilience(soil, "p_h_k_cl"))


x <- x %>% mutate(meses = str_remove(resilience, "res."))

Plots

Version Author Date
8eb9957 ajpelu 2021-09-13

Version Author Date
8eb9957 ajpelu 2021-09-13

R version 4.0.2 (2020-06-22)
Platform: x86_64-apple-darwin17.0 (64-bit)
Running under: macOS Catalina 10.15.3

Matrix products: default
BLAS:   /Library/Frameworks/R.framework/Versions/4.0/Resources/lib/libRblas.dylib
LAPACK: /Library/Frameworks/R.framework/Versions/4.0/Resources/lib/libRlapack.dylib

locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
 [1] car_3.0-10         carData_3.0-4      glmmADMB_0.8.3.3   glmmTMB_1.0.2.1   
 [5] DHARMa_0.3.3.0     afex_0.28-1        performance_0.7.2  multcomp_1.4-16   
 [9] TH.data_1.0-10     mvtnorm_1.1-1      emmeans_1.5.4      lmerTest_3.1-3    
[13] lme4_1.1-27.1      Matrix_1.3-2       fitdistrplus_1.1-3 survival_3.2-7    
[17] MASS_7.3-53        ggpubr_0.4.0       janitor_2.1.0      here_1.0.1        
[21] forcats_0.5.1      stringr_1.4.0      dplyr_1.0.6        purrr_0.3.4       
[25] readr_1.4.0        tidyr_1.1.3        tibble_3.1.2       ggplot2_3.3.5     
[29] tidyverse_1.3.1    rmdformats_1.0.1   knitr_1.31         workflowr_1.6.2   

loaded via a namespace (and not attached):
 [1] minqa_1.2.4         colorspace_2.0-0    ggsignif_0.6.0     
 [4] ellipsis_0.3.2      rio_0.5.16          rprojroot_2.0.2    
 [7] estimability_1.3    snakecase_0.11.0    fs_1.5.0           
[10] rstudioapi_0.13     farver_2.0.3        fansi_0.4.2        
[13] lubridate_1.7.10    xml2_1.3.2          codetools_0.2-18   
[16] splines_4.0.2       jsonlite_1.7.2      nloptr_1.2.2.2     
[19] broom_0.7.9         dbplyr_2.1.1        compiler_4.0.2     
[22] httr_1.4.2          backports_1.2.1     assertthat_0.2.1   
[25] fastmap_1.1.0       cli_2.5.0           formatR_1.8        
[28] later_1.1.0.1       htmltools_0.5.2     tools_4.0.2        
[31] coda_0.19-4         gtable_0.3.0        glue_1.4.2         
[34] reshape2_1.4.4      Rcpp_1.0.7          cellranger_1.1.0   
[37] jquerylib_0.1.3     vctrs_0.3.8         nlme_3.1-152       
[40] iterators_1.0.13    insight_0.14.4      xfun_0.23          
[43] openxlsx_4.2.3      rvest_1.0.0         lifecycle_1.0.0    
[46] rstatix_0.6.0       zoo_1.8-8           scales_1.1.1       
[49] hms_1.0.0           promises_1.2.0.1    parallel_4.0.2     
[52] sandwich_3.0-0      TMB_1.7.19          yaml_2.2.1         
[55] curl_4.3            sass_0.3.1          stringi_1.7.4      
[58] highr_0.8           foreach_1.5.1       boot_1.3-26        
[61] zip_2.1.1           R2admb_0.7.16.2     rlang_0.4.10       
[64] pkgconfig_2.0.3     evaluate_0.14       lattice_0.20-41    
[67] labeling_0.4.2      tidyselect_1.1.1    plyr_1.8.6         
[70] magrittr_2.0.1      bookdown_0.21.6     R6_2.5.0           
[73] generics_0.1.0      DBI_1.1.1           pillar_1.6.1       
[76] haven_2.3.1         whisker_0.4         foreign_0.8-81     
[79] withr_2.4.1         abind_1.4-5         modelr_0.1.8       
[82] crayon_1.4.1        utf8_1.1.4          rmarkdown_2.8      
[85] grid_4.0.2          readxl_1.3.1        data.table_1.14.0  
[88] git2r_0.28.0        reprex_2.0.0        digest_0.6.27      
[91] xtable_1.8-4        httpuv_1.5.5        numDeriv_2016.8-1.1
[94] munsell_0.5.0       bslib_0.2.4