diagram.gv

digraph cool {

graph [layout = dot]

node [shape = circle,
      style = filled,
      color = black]
Research [fillcolor = red]

#Environmental Keywords
node [fixedsize = true, fontsize = 10, width = 0.9]
Climate  [label = '@@1-1', fillcolor = palegreen]
Water    [label = '@@1-2', fillcolor = deepskyblue]
Ag       [label = '@@1-4', fillcolor = khaki]
Scarcity [label = '@@1-3', fillcolor = lavender]
Open     [label = '@@1-5', fillcolor = lightsalmon]
Power    [label = '@@1-6', fillcolor = mediumorchid]
Metrics  [label = '@@1-7', fillcolor = orange]

#Projects
node [fillcolor = lightsteelblue, fixedsize = false, fontsize = 8, shape = box]
A [label = '@@2']
B [label = '@@3']
C [label = '@@4']
D [label = '@@5']
E [label = '@@6']
F [label = '@@7']
G [label = '@@8']
H [label = '@@9']

edge [color = black]
Research -> {Climate Water Ag Scarcity Open Power Metrics}
Climate -> A
Ag -> A
Metrics -> B
Climate -> B
Scarcity -> C
Water -> C
Power -> C
Water -> D
Scarcity -> D
Climate -> D
Open -> E
Metrics -> F
}

[1]: c("Climate", "Water", "Scarcity", "Agriculture", "Openness", "Power", "Econometrics")
[2]: "Climate increases agriculture land rent"
[3]: "Climate estimators"
[4]: "Optimal resource use under market power"
[5]: "Water scaricity and human conflict"
[6]: "Open source economies"
[7]: "Bayesian causality"
[8]: "Science and beliefs"
[9]: "Climate estimators"