Defani Arman Alfitriansyah Defani

Forester | Ecology & Carbon Analyst | Species Distribution Modeling

Forestry, ecology, and carbon science through open-source geospatial technology.

About

Bachelor of Forestry, Universitas Kuningan — graduated August 2026, GPA 3.88.
Focus areas: forest and mangrove carbon stock mapping, ecological modeling, and species distribution modeling (SDM) for conservation and sustainability.
Applies remote sensing data (Sentinel-2, Landsat) and spectral analysis to quantify above-ground biomass (AGB) and support restoration prioritization.
Builds and maintains open-source geospatial workflows using QGIS, R, Python, and Google Earth Engine, including RasterViz, a QGIS plugin used by 900+ users worldwide.
Shares knowledge on ecology, carbon, and open-source GIS with a community of 5,000+ followers through @49s.lab.

Experience

Role	Organization	Period
GIS Consultant	Redelong Institute, Rumah Berkelanjutan TFCA Program	Current
GIS Consultant, PECI Program	WWF Indonesia (home-based, Aceh)	Since September 2026
Laboratory Assistant	Universitas Kuningan	2025–2026
GIS & Remote Sensing Tutor	Forum Pohon Langka Indonesia	2025
Social Forestry Facilitator	BPSKL Sumatera, Ministry of Environment and Forestry	2024

Forestry & Field Expertise

Forestry measurements: biomass parameter measurement, forest inventory, wildlife inventory.
Vegetation & biometrics: forest profile construction, vegetation analysis, forest biometrics.
Biodiversity survey: Taman Nasional Gunung Ciremai (TNGC).
Coastal ecosystems: mangrove survey and identification.

Technical Stack

Category	Python Ecosystem	R Ecosystem	Software / Spatial Tools
Data & ML
Geospatial & Ecology
Visualization & GUI

Featured Projects

Project	What it is	Status
RasterViz	QGIS plugin (ID `qrviz`, GPL-2.0) for styling and visualizing raster layers — CRS reprojection fixes, discrete raster mode, canvas layout tools. Listed on the official QGIS Plugin Repository.	v1.4.5 · 900+ users
Ploots	Browser-based chart builder on Plotly.js/Fabric.js — sankey, choropleth (GeoJSON), radial and lollipop charts, with a data-view panel built around ecological/remote-sensing sample datasets.	Active development
Map-Biomas-style-QGIS-Toolbox	QGIS Processing script that applies the official MapBiomas Indonesia land-cover symbology to classified rasters in one step.	In development

(Update the links above to your actual repo URLs — placeholders point to your profile.)

GitHub Stats

Workflow

flowchart TD
    subgraph ACQ["Data Acquisition"]
        A1[Sentinel-2 / Landsat Imagery]
        A2[Field Survey & Forest Inventory]
        A3[Species Occurrence Records]
        A4[Environmental & Climate Layers]
    end

    subgraph PROC["Processing & Preparation"]
        B1[Google Earth Engine<br/>Preprocessing & Compositing]
        B2[QGIS<br/>Spatial Data Management]
        B3[R / Python<br/>Data Cleaning & Feature Engineering]
    end

    subgraph ANALYSIS["Analysis & Modeling"]
        C1[Spectral Index Derivation<br/>NDVI, EVI, SAVI]
        C2[Above-Ground Biomass Estimation]
        C3[Species Distribution Modeling<br/>MaxEnt / dismo]
        C4[Landscape Metrics & Vegetation Analysis]
    end

    subgraph SYNTH["Synthesis"]
        D1[Carbon Stock Mapping]
        D2[Habitat Suitability Mapping]
        D3[Restoration Prioritization]
    end

    subgraph OUTPUT["Output & Impact"]
        E1[Technical Reports]
        E2[Open-Source QGIS Plugins]
        E3[Community Education<br/>@49s.lab]
        E4[Conservation Decision Support]
    end

    A1 --> B1
    A2 --> B2
    A3 --> B3
    A4 --> B3

    B1 --> C1
    B2 --> C4
    B3 --> C2
    B3 --> C3

    C1 --> D1
    C2 --> D1
    C3 --> D2
    C4 --> D3

    D1 --> E1
    D1 --> E4
    D2 --> E4
    D3 --> E4
    E1 --> E2
    E1 --> E3

    classDef acq fill:#0f172a,stroke:#10b981,color:#ffffff
    classDef proc fill:#1e293b,stroke:#10b981,color:#ffffff
    classDef analysis fill:#0f172a,stroke:#10b981,color:#ffffff
    classDef synth fill:#1e293b,stroke:#10b981,color:#ffffff
    classDef output fill:#0f172a,stroke:#10b981,color:#ffffff

    class A1,A2,A3,A4 acq
    class B1,B2,B3 proc
    class C1,C2,C3,C4 analysis
    class D1,D2,D3 synth
    class E1,E2,E3,E4 output

Research Interests

Forest ecology and carbon modeling
Mangrove biomass and carbon stock estimation
Species distribution modeling
Forestry and remote sensing
Restoration prioritization
Biodiversity conservation
Sustainability through open-source geospatial tools
Social forestry
Environmental education

Currently

🔭 Growing RasterViz past v1.4.5 and continuing development on Ploots.
🌱 Deepening mangrove AGB/carbon estimation workflows combining Sentinel-2 spectral indices with field allometry.
📫 Reachable at defaniarman@gmail.com or via the badges above.

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