# Modeling Setaria tundra

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;~~~~~~~~~~~~ These are globals breed [Mosquitos Mosquito] breed [Reindeers Reindeer] extensions [ csv time ] globals [ grass-growth-rate ; the rate at which grass gows grass-density ; the density of patches that is vegetation grass-probability ; the probability that grass has not been overgrazed grass-regrowth-rate ; the rate at which grass grows back grass-energy ; amount of energy grass provides reproductive-energy ; amount of energy needed for reproduction new-turtle ; spawn a new turtle herd-size ; the size of a herd initial-energy ; We assume each reindeer will live for 12 years (365 ticks * 12 years = 4380) mortality-rate ; the rate at which reindeer die risky-reindeer ; the rate at which reindeer will explore cluster-center ; this is the center of the blue water body mosquito-start reindeer-density ; This is how many reindeer can occupy any one patch at a given time snow-density wise-one ; oldest reindeer patch-radius ; This is the radius of the lakes elevation ; this is the elevation of the terrain elevation-max ; This is the maximum elevation of the terrain in the model current-date ; This is the current date of the tick current-month ; This is the current month of the date of the tick, useful for categorizing meterological seasons time-series ; This is if user uploads a .csv file with the first column being a datetime (YYYY-MM-DD) and the second column is temperature in degrees Celcius (must have 1 row of headers) temperature ; This is the daily temperature for the simulation index ; This is to keep track of the list in the time-series rainy-days ; This is to track how many consecutive days of rain there has been cold-warm-days ; This is to track how many consecutive warm days above 0 C there have been ] patches-own [ grass-amount ; This is how much units of grass there is, 1 unit of grass can feed 1 turtle ] ;~~~~~~~~~~~~These are turtle properties Reindeers-own [ energy ; enrgy of the turtle hunger ; minimum amount of grass need to be eaten for turtle survival age ; the age of turtles in ticks reproductiveness ; the reproductive ability for turtles, based on age and body condition infected? ; if this is true, the turtle is infected immunity-remaining ; how many weeks of immunity the turtle has left flockmates ; agentsset of nearby turtles nearest-neighbor ; closest flockmate immune? ; if this is true a turtle is immune recovered? ; if this is true a turtle has recovered sick-time ; when a turtle became sick dead? ; when true, a turtle is dead larvae-count ; how many larvae are in each reindeer ] Mosquitos-own [ age ; age of mosquito (22-76 ticks, days), adult after 20 ticks infected ; infected with m.f. infected? blood-meal ; cumulative count of blood for oviposit ] to clear-run clear-all end to setup clear-output clear-all reset-ticks ifelse file-option? [ ;set current-time time:create "2010-01-01" setup-file ][ set current-date time:create Date_opt ] setup-patches setup-reindeer setup-mosquitos set cold-warm-days 0 set rainy-days 0 end ; ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ This is to setup the world to setup-file set time-series csv:from-file File-name let start-date first item 1 time-series let end-date first item (length time-series - 1) time-series set current-date start-date set index 1 end to setup-patches resize-world 0 world-size 0 world-size ; set up world size. This is in m. 1 patch is 100 m x 100 m ask patches [ ifelse random-float 1.0 < 0.2 ; Adjust the probability (0.2 in this case) for green patches [ set pcolor green set grass-amount 5] [ set pcolor brown set grass-amount 0] ] create-blue-clusters ; Create irregular-shaped clusters of blue patches end ;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ;~~~~~~~~~~~~~~~~~~~~~~~ This is to set up a water body ~~~~~~~~~~~~~~~~~~~~~~~ ;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ to create-blue-clusters ifelse patch-sizes = "small" [ set patch-radius world-size * 0.05 ][ ifelse patch-sizes = "medium" [ set patch-radius world-size * 0.15 ][ set patch-radius world-size * 0.3 ]] repeat patches-amt [ set cluster-center patch random-xcor random-ycor ask cluster-center [ set pcolor blue ask patches in-radius patch-radius [ set pcolor blue ] ] ] ; Define mosquito-start patches at the edge of blue patches let edge-patches patches with [ pcolor = blue and any? neighbors with [pcolor != blue] ] ifelse any? edge-patches [ set mosquito-start edge-patches ][ user-message "No suitable mosquito start patches found" ] end ;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ;~~~~~~~~~~~~~~~~~~~~~~~ This is to set up the reindeer;~~~~~~~~~~~~~~~~~~~~~~~ ;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ to setup-reindeer let non-blue-patches patches with [pcolor != blue] ; consider only non-blue patches ; Set initial positions closer together near the nearest non-blue patch let p one-of non-blue-patches create-Reindeers Reindeer-pop [ set shape "reindeer" set size 1.5 set color 33 set age 0 set energy initial-energy set immune? false set dead? false set energy 300 set infected? false set larvae-count 0 if random-float 1 < initial-infected-rate [ set infected? true set larvae-count larvae-count + 1 set color violet ] set reindeer-density 5 move-to p ; this is the initial point let i 0 let q patch-ahead random-float (herd-spread * Reindeer-pop) while [ i < reindeer-density] [ rt random 360 ;cw: we were missing random turns so it was only doing random distance below set q patch-ahead random-float (herd-spread * Reindeer-pop) ;cw: copied this inside the while so q is a new patch each loop of the while, also changed to * reindeer to match herd-movement if q != nobody and [pcolor] of q != blue and [pcolor] of q != white and [count Reindeers-here] of q < reindeer-density [ move-to q set i reindeer-density ;cw: if they move, break the while ] set i i + 1 ] ;cw: optional check to more fully scatter over-crowded reindeer (or increase reindeer-density above) if count Reindeers-here > reindeer-density [ move-to one-of patches with [pcolor != blue and pcolor != white and count Reindeers-here < reindeer-density] ] ] end ;~~~~~~~~~~~~~~~~~~~ This is to set up mosquitos to setup-mosquitos create-Mosquitos Mosquitos-pop[ set shape "mosquito" set size 0.45 set color white set age 0 ;set age random-float max-age set blood-meal 0 let initial-patch one-of mosquito-start ;patches with [pcolor = blue] move-to initial-patch ] end ;~~~~~~~~~~~~~~~~~~~ This is to set up mosquitos ;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ++++ +++ ++ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + + ++ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + ++ + + ++ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + + + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ++++ +++ ++ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ to go ;;;;;;;;;;;;;;; PATCHES STUFF ;;;;;;;;;;;;;;; grow-grass eat-grass herd-movement ;;;;;;;;;;;;;;; REINDEER STUFF ;;;;;;;;;;;;;;; if reindeer-life-cycle? [ reproduce age-and-die ] infect-reindeer ;;;;;;;;;;;;;;; MOSQUITO STUFF ;;;;;;;;;;;;;;; mosquito-age mosquito-move mosquito-bite mosquito-reproduce-die ;;;;;;;;;;;;;;; TEMP STUFF (FROM FILE OPTION) ;;;;;;;;;;;;;;; ifelse file-option? [ if index < length time-series [ set temperature last item index time-series set current-date first item index time-series ] set index index + 1 if index > length time-series [ user-message "The simulation has reached the end of your file points" stop ] ][ temp ifelse temperature > 0 [set cold-warm-days cold-warm-days + 1] [set cold-warm-days 0] set current-date time:plus current-date 1 "days" ] ;;;;;;;;;;;;;;; RAIN STUFF ;;;;;;;;;;;;;;; if climate-on? [precipitation] tick end ;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ to grow-grass ; grass grows on dirt patches at a constant rate ; Within 14 ticks, theres a threshold for 5 reindeer grazing ; Grass will regrow set grass-regrowth-rate 0.0025 ask patches with [pcolor = brown] [ if random-float 1 < grass-regrowth-rate [ set pcolor green set grass-amount 5 ; later I want to add a variation on green depending on grass-amount ;Last visited by reindeer over a certain amount of time, will regrow. Healthier grass patch after an amount of time ] ] end ;~~~~~ ++ ++ ++++++++ ++++++++ +++++ ++++ ++++ ++++++++ ++++++++ ++ ++ ~~~~~~~~~~ ;~~~~~ +++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ~~~~~~~~~~ ;~~~~~ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ~~~~~~~~~~ ;~~~~~ +++ ++++ ++ ++ ++ ++ ++ ++ ++++ ++++ +++ ~~~~~~~~~~ ;~~~~~ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ~~~~~~~~~~ ;~~~~~ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ~~~~~~~~~~ ;~~~~~ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ~~~~~~~~~~ ;~~~~~ ++ ++ ++++++++ ++++++++ ++ ++++ ++++ ++++++++ ++++++++ ++ ++ ~~~~~~~~~~ to butcher ask n-of butcher-amt Reindeers [die] print (word "You have butchered " butcher-amt " reindeer") end to eat-grass ask reindeers [ if pcolor = green and grass-amount > 0 [ set energy energy + 10 ask patch-here [ set grass-amount grass-amount - 1 if grass-amount = 0 [ set pcolor brown ] ] ] ] end to reproduce ; ask Reindeers with [energy > 150 and random-float 1 < reproduction-rate] [ let nearby-Reindeers other Reindeers in-radius vision let parent-Reindeers min-one-of nearby-Reindeers with [self != myself] [distance myself] if parent-Reindeers != nobody [ hatch-reindeers 1 [ let mean-x mean [xcor] of nearby-Reindeers let mean-y mean [ycor] of nearby-Reindeers setxy mean-x mean-y set age 1 set energy initial-energy ] face parent-Reindeers fd 1 ] ] end to age-and-die ;Adult reindeer max age is 20 years. Each tick is a day (20 years is 7300 days) ;Reindeer become adults at 5 (Females) and 6 (Males). For now, will set for 5. ask Reindeers [ set age age + 1 set energy energy - 1 if age > 7300 or energy <= 0 [ die] ] if wise-one = nobody [ set wise-one min [who] of Reindeers ; this is the minimum ID of all turtles, the turtle with the lowest identifier ask Reindeer wise-one [set color yellow] ] end to infect-reindeer ask reindeers [ if any? turtles-here with [breed = mosquitos and infected > 0] [ if random-float 1 < 0.5 [ set infected? true set larvae-count larvae-count + 1 ] ] ] end ;to herd-movement-stationary ; ; ; Ask all turtles to perform herd movement logic ; ; Check if the turtle is a cow ; ; ask turtles [ ; ; if shape = "cow" [ ; let all-turtles other turtles ; let nearby-turtles all-turtles with [distance myself < vision] ; ; ; check if turtle is on a non-frozen patch next to a water patch ; ; let risky? false ; let neighboring-patches patches in-radius 1 with [pcolor = blue] ; if pcolor != white and any? neighboring-patches [ ; set risky? (random-float 1 < risky-reindeer) ; ] ; ; ; move towards mean position if not risky ; if not risky? and any? nearby-turtles [ ; let mean-x mean [xcor] of nearby-turtles ; let mean-y mean [ycor] of nearby-turtles ; let mean-position patch mean-x mean-y ; ; let dispersion-factor herd-spread * Reindeer-pop ; let max-dispersion round(vision * 0.5) ; let min-dispersion round(vision * 0.25) ; let radius random-float (max-dispersion - min-dispersion) + min-dispersion ; ; ; find all patches within radius that are not frozen or water and have fewer than 5 turtles ; let non-frozen-patches patches with [ ; pcolor != white and ; pcolor != blue and ; distance myself <= radius and ; count Reindeers-here < 5 ; ] ; ; ; move towards a non-frozen patch if there is one, otherwise move randomly ; ifelse any? non-frozen-patches [ ; let destination one-of non-frozen-patches ; face destination ; fd 1 ; ] [ ; rt random 360 ; fd 1 ; ] ;]]] ; ;end to herd-movement let non-frozen-patches patches with [ ;Patches that are not snow or water pcolor != 105 ] set wise-one min [who] of Reindeers ; this is the minimum ID of all turtles, the turtle with the lowest identifier ask Reindeer wise-one [set color yellow] let dispersion-factor herd-spread * Reindeer-pop ; this is how many patches wide herded reindeer can move around in let herd-patches non-frozen-patches with [distance Reindeer wise-one < dispersion-factor] ; contain a subset of non-frozen-patches that are within the specified distance from the turtle wise-one let lead-x [xcor] of Reindeer wise-one let lead-y [ycor] of Reindeer wise-one let lead-distance patch lead-x lead-y ; The location of wise-one will dictate movements of all turtles ask Reindeer wise-one [ face one-of herd-patches in-radius vision if patch-ahead 1 != nobody and [pcolor] of patch-ahead 1 != blue [ fd 1 ] ] ask Reindeers [ ; if the distance of the turtle to the lead-turtle is less than the dispersion factor, then it will move randomly within the "radius" of the herd ; However, if the distance of the turtle to the lead turtle is more than the dispersion factor, then it will move forward one towards the leader ; We also want to make sure there are only 5 turtles on a patch ifelse distance Reindeer wise-one < dispersion-factor [ rt random 360 if patch-ahead 1 != nobody and member? patch-ahead 1 non-frozen-patches and [count Reindeers-here] of patch-ahead 1 < 5 [ ; rename to land fd 1];[if count turtles-here > 5 [type "a"]] ][ ; this is asking if the patch ahead the turtle satifies the following conditions. If it does it moves fd 1. If not it faces the wise-one and moves fd 1 towards them ;[1] That the patch is a herd-patch, meaning it is grass and not frozen ;[2] that there are less than 5 turtles on that patch face Reindeer wise-one ifelse patch-ahead 1 != nobody and member? patch-ahead 1 herd-patches and [count Reindeers-here] of patch-ahead 1 < 5 and [pcolor] of patch-ahead 1 != blue [ fd 1 ] [ rt 90 - random 180 if patch-ahead 1 != nobody and member? patch-ahead 1 non-frozen-patches and [count Reindeers-here] of patch-ahead 1 < 5 and [pcolor] of patch-ahead 1 != blue [ fd 1 ];[if count turtles-here > 5 [type "b"]] ] ] if patch-here = blue [ rt 180 fd 1 ] ;if count turtles-here > 5 [type "c"] ] ; if [pcolor] of patch-here = blue [ ; print "Turtle is on a blue patch." ; stop ] ; CHECK HOW MANY REINDEER PER PATCH ; if max [count turtles-here] of patches > 5 [ ; print word ("There are more than 5 turtles on a patch:") max [count turtles-here] of patches ; ] end ;~~~~~~~~~~ +++ +++ +++++ ++++++ +++++ ~~~~~~~~~~ ;~~~~~~~~~~ ++ + + ++ ++ ++ ++ ++ ++ ~~~~~~~~~~ ;~~~~~~~~~~ ++ + + ++ ++ ++ ++ ++ ++ ~~~~~~~~~~ ;~~~~~~~~~~ ++ + + ++ ++ ++ ++ ++ ++ ~~~~~~~~~~ ;~~~~~~~~~~ ++ + ++ ++ ++ ++ ++ ++ ~~~~~~~~~~ ;~~~~~~~~~~ ++ ++ ++ ++ ++ ++ ++ ~~~~~~~~~~ ;~~~~~~~~~~ ++ ++ ++ ++ ++ ++ +++ ~~~~~~~~~~ ;~~~~~~~~~~ ++ ++ +++++ ++++++ +++++ ++ ~~~~~~~~~~ to mosquito-age ; Age adult mosquitos ask Mosquitos with [color != white] [ set age age + 1] ; Mosquito larvae and pupa will grow above 5 degrees if temperature > 4 and temperature < 40 [ if member? current-month [3 4 5 6 7 8 9] [ ask mosquitos with [color = white] [ set age age + 1 if age >= 20 [ set color 1 ] ] ] ] ; but half will die if temperatures hit above 40 if temperature > 40 [ ask n-of (0.5 * count mosquitos with [color = white]) mosquitos with [color = white] [ die] ] end to mosquito-move ;This is set up so that all mosquitos move around the water body ;as they are flood-water mosquitos. ask Mosquitos with [color != white] [ ifelse blood-meal < blood-max [ let r min-one-of Reindeers [distance myself] ifelse distance r < mosquito-vision [ face r fd random-float mosquito-move-day] [ rt random 360 fd random-float mosquito-move-day] ] [ let t min-one-of mosquito-start [distance myself] face t ; print "t" ifelse distance t < mosquito-move-day [ move-to t][ fd random-float mosquito-move-day ] ] ] end to mosquito-bite ; this model will follow the SIRS ;Susceptible ;Infected ; Only consider mosquitoes that are either healthy (color 1) or already infected (color red) ask Mosquitos with [color = 1 or color = red] [ ; If there are reindeer on the same patch as the mosquito if count Reindeers-here != 0 [ let lunch 0 ; Initialize a variable 'lunch' to store that the mosquito has had a blood meal or partial blood meal ifelse count Reindeers-here <= mosquito-bite-day ; If the number of reindeer on the patch is less than or equal to the number of bites a mosquito can take in a day [set lunch Reindeers-here] [set lunch n-of mosquito-bite-day Reindeers-here ] ; if there are 50 reindeer, they will bite all 50, if 100 reindeer, they will bite random 50 if mosquito bite is 50 set blood-meal blood-meal + (count lunch * random-float blood-meal-size) ; Increase the mosquito's blood meal by an amount proportional to the number of reindeer bitten and a random factor of the blood-meal-size ; if blood-meal >= blood-max [ ; print "blood!" ; print blood-meal] let infected-lunch lunch with [infected? = true] ; Create a subset of 'lunch' that includes only the reindeer that are already infected let i 0 while [i < count infected-lunch] [ ; Create a subset of 'lunch' that includes only the reindeer that are already infected if random-float 1 < infected-probability [ ; If a randomly generated number between 0 and 1 is less than the infected-probability set infected 1 ; can add m.f. load here (avg 3-6 per mosquito) set color red ] set i i + 1 ] print infected-lunch ] ] end to mosquito-reproduce-die ; Only reproduction happening from April to September if member? current-month [4 5 6 7 8 9] [ ask mosquitos with [blood-meal >= blood-max] [ if member? patch-here mosquito-start [ hatch-mosquitos eggs [ set infected 0 set color white set age 0 set blood-meal 0 ] ; print "babies!"] ; print count mosquitos with [color = white] set blood-meal 0 ] ; Some percentage of adult mosquitos die after reproduction if random-float 1 < percent-die-oviposit [ die ] ] ] ; Mosquitoes have a short life expectancy ask mosquitos with [age >= max-age] [ die] ; Mosquitos die off after september ask mosquitos with [color != white] [ if member? current-month [10 11 12 1 2 3] and temperature < 1 [ die ] ] end ;~~~~~~ ++++++++ ++ ++++++++ +++++ +++++ ++++++++ ++++++++ +++++++ ~~~~~~~~~~~~ ;~~~~~~ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ++ ~~~~~~~~~~~~ ;~~~~~~ ++ ++ ++ ++ ++++ ++ ++ ++ ++ ++ ~~~~~~~~~~~~ ;~~~~~~ ++ ++ ++ ++ ++ ++ ++ ++ ++ +++++ ~~~~~~~~~~~~ ;~~~~~~ ++ ++ ++ ++ ++ ++++++++ ++ ++ ~~~~~~~~~~~~ ;~~~~~~ ++ ++ ++ ++ ++ ++ ++ ++ ++ ~~~~~~~~~~~~ ;~~~~~~ ++ ++ ++ ++ ++ ++ ++ ++ ++ ~~~~~~~~~~~~ ;~~~~~~ ++++++++ ++++++++ ++++++++ ++ ++ ++ ++ ++ +++++++ ~~~~~~~~~~~~ to temp ; This is to set random temperatures for the meterological seasons of DJF, MAM, JJA, SON ; DJF is between -30 and 00 ; MAM is between -05 and 05 ; JJA is between 10 and 15 ; SON is between 00 and 05 set current-month time:get "month" current-date ifelse member? current-month [1 2 12] [ set temperature random -30 ][ ifelse member? current-month [3 4 5] [ set temperature -5 + random 5 ][ ifelse member? current-month [6 7 8] [ set temperature 10 + random 15 ][ set temperature 0 + random 5 ] ] ] end to precipitation ; procedure to create random snow when the temperature is below 0. for now if the month is DJF, snowfall has a probability of 30% ; if the month is MAM, snowfall has a probability of 15% ; if the month is JJA, snowfall has a 5% ; if the month is SON, snowfall has a 10% ; the snow should "disappear" after 3 consecutive days of temp over 0 degrees let precip-prob 0 let precip-dens 0 let snow-prob 0 let snow-dens 0 set current-month time:get "month" current-date ifelse member? current-month [12 1 2] [ set precip-prob 5 set precip-dens 0.05 * world-size set snow-prob 30 set snow-dens 0.5 * world-size ] [ ifelse member? current-month [3 4 5] [ set precip-prob 10 set precip-dens 0.15 * world-size set snow-prob 15 set snow-dens 0.3 * world-size ] [ ifelse member? current-month [6 7 8] [ set precip-prob 30 set precip-dens 0.40 * world-size set snow-prob 5 set snow-dens 0.1 * world-size ] [ set precip-prob 15 set precip-dens 0.25 * world-size set snow-prob 10 set snow-dens 0.2 * world-size ] ] ] ask n-of snow-dens patches with [pcolor = brown or pcolor = green] [ if temperature < 1 [ set pcolor white] ] ; Snow melts after 3 consecutive warm days (days above 0) ask patches with [pcolor = white] [ if temperature > 0 and cold-warm-days > 2 [ set pcolor brown] ] ;Rain if temperature > 0 [ ;Rain on grass or dirt ifelse random-float 100 < precip-prob [ set rainy-days rainy-days + 1 ask n-of precip-dens patches with [pcolor != blue] [ set pcolor 104 ] ][ set rainy-days 0 ] ;Expand or contract ephemeral water depending on how much it rained ;if it rains more than 2 consecutive days, the area will pond randomly ifelse rainy-days < 2 [ ask patches with [pcolor = 104] [ set pcolor brown ] ][ ask patches with [pcolor = 104] [ if any? neighbors with [pcolor = brown or pcolor = green] [ ask one-of neighbors with [pcolor = brown or pcolor = green] [ set pcolor 104 ] ] ] ] ] ;if it rains for 5+ consecutuve days, then the permanent waterbodies will flood and expand if rainy-days > 4 [ ask patches with [pcolor = green or pcolor = brown] [ if any? neighbors with [pcolor = blue] [ set pcolor 107] ] ] ; if it doesn't rain for 2 days, then the permenant water bodies that previously flooded will contract. (I will have to fix this) if rainy-days < 2 [ ask patches with [pcolor = 107] [ set pcolor brown] ] end

There is only one version of this model, created about 1 month ago by Stephania Zneimer.

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Modeling Setaria tundra.png | preview | Preview for 'Modeling Setaria tundra' | about 1 month ago, by Stephania Zneimer | Download |

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Stephania Zneimer

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## Posted about 1 month ago