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Biomass Pyramid & Energy Flow (10% Law)

Trophic pyramid from producer energy and transfer efficiency: per-level energy, % of base, losses, and why energy pyramids stay upright.

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Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/biomass-pyramid' \
  -H 'Content-Type: application/json' \
  -d '{"producerEnergy":20000,"unit":"kJ / m² / year (energy)","efficiencyPct":10,"levelCount":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/biomass-pyramid

Parameters

Name	Type	Required	Description
producerEnergy	number	Yes	Energy fixed (or standing biomass) at the producer level — any consistent unit.
unit	select	Yes	—
efficiencyPct	number	Yes	Share of energy passed to the next level. Lindeman's classic value is 10%; measured values are typically 5–20%.
levelCount	number	Yes	From producers (T1) up to T6. Food chains longer than 5 levels are rare precisely because of the energy decay.

Response format

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-biomass-pyramid": {
      "name": "biomass-pyramid",
      "description": "Trophic pyramid from producer energy and transfer efficiency: per-level energy, % of base, losses, and why energy pyramids stay upright.",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=biomass-pyramid",
      "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": "biomass-pyramid",
    "arguments": {
  "producerEnergy": 20000,
  "unit": "kJ / m² / year (energy)",
  "efficiencyPct": 10,
  "levelCount": 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]

Browse tools Open tool

curl -X POST 'https://api.elysiatools.com/en/api/tools/biomass-pyramid' \ -H 'Content-Type: application/json' \ -d '{"producerEnergy":20000,"unit":"kJ / m² / year (energy)","efficiencyPct":10,"levelCount":5}'

Name

Type

Required

Description

producerEnergy

number

Yes

Energy fixed (or standing biomass) at the producer level — any consistent unit.

unit

select

Yes

—

efficiencyPct

number

Yes

Share of energy passed to the next level. Lindeman's classic value is 10%; measured values are typically 5–20%.

levelCount

number

Yes

From producers (T1) up to T6. Food chains longer than 5 levels are rare precisely because of the energy decay.

{ "mcpServers": { "elysiatools-biomass-pyramid": { "name": "biomass-pyramid", "description": "Trophic pyramid from producer energy and transfer efficiency: per-level energy, % of base, losses, and why energy pyramids stay upright.", "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=biomass-pyramid", "command": "", "args": [], "env": {}, "isActive": true, "type": "sse" } } }

{ "jsonrpc": "2.0", "id": 2, "method": "tools/call", "params": { "name": "biomass-pyramid", "arguments": { "producerEnergy": 20000, "unit": "kJ / m² / year (energy)", "efficiencyPct": 10, "levelCount": 5 } } }