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Species Richness & Evenness (S, Margalef, Menhinick, J = H′/H′max)

Richness S with Margalef/Menhinick indices, Shannon H′, Pielou evenness J, and Berger–Parker dominance from a named or plain species list.

json· JSON resultOpen tool

Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/species-richness-evenness' \
  -H 'Content-Type: application/json' \
  -d '{"counts":"Oak: 34\nMaple: 28\nBeech: 22\nPine: 11\nBirch: 5"}'

API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP

POST https://api.elysiatools.com/en/api/tools/species-richness-evenness

Parameters

Name	Type	Required	Description
counts	textarea	Yes	One species per line as `name: count` (separators : ; = , \| or tab), or plain numbers separated by new lines, commas, or spaces. Duplicate names are merged by summing.

Response format

JSON result

JSON

{
  "key": {...},
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json

{
  "mcpServers": {
    "elysiatools-species-richness-evenness": {
      "name": "species-richness-evenness",
      "description": "Richness S with Margalef/Menhinick indices, Shannon H′, Pielou evenness J, and Berger–Parker dominance from a named or plain species list.",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=species-richness-evenness",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "species-richness-evenness",
    "arguments": {
  "counts": "Oak: 34\nMaple: 28\nBeech: 22\nPine: 11\nBirch: 5"
}
  }
}

Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).

Questions or issues? Contact [email protected]

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Name

Type

Required

Description

counts

textarea

Yes

One species per line as `name: count` (separators : ; = , | or tab), or plain numbers separated by new lines, commas, or spaces. Duplicate names are merged by summing.

{ "mcpServers": { "elysiatools-species-richness-evenness": { "name": "species-richness-evenness", "description": "Richness S with Margalef/Menhinick indices, Shannon H′, Pielou evenness J, and Berger–Parker dominance from a named or plain species list.", "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=species-richness-evenness", "command": "", "args": [], "env": {}, "isActive": true, "type": "sse" } } }

{ "jsonrpc": "2.0", "id": 2, "method": "tools/call", "params": { "name": "species-richness-evenness", "arguments": { "counts": "Oak: 34\nMaple: 28\nBeech: 22\nPine: 11\nBirch: 5" } } }