"keystone species" meaning in English

{
  "forms": [
    {
      "form": "keystone species",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "keystone species"
      },
      "expansion": "keystone species (plural keystone species)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Ecology",
          "orig": "en:Ecology",
          "parents": [
            "Biology",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2018, Tim Flannery, Europe: A Natural History, page 227:",
          "text": "Megafauna are called ʻkeystone speciesʼ because when they become extinct the entire arch of the ecosystem can collapse.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A species that exerts a large, stabilizing influence throughout an ecological community, despite its relatively small numerical abundance."
      ],
      "id": "en-keystone_species-en-noun-jLuwIWJI",
      "links": [
        [
          "ecology",
          "ecology"
        ],
        [
          "species",
          "species"
        ],
        [
          "stabilizing",
          "stabilizing"
        ],
        [
          "ecological",
          "ecological"
        ],
        [
          "small",
          "small"
        ]
      ],
      "raw_glosses": [
        "(ecology) A species that exerts a large, stabilizing influence throughout an ecological community, despite its relatively small numerical abundance."
      ],
      "related": [
        {
          "word": "flagship species"
        }
      ],
      "topics": [
        "biology",
        "ecology",
        "natural-sciences"
      ],
      "wikipedia": [
        "keystone species"
      ]
    }
  ],
  "word": "keystone species"
}

{
  "forms": [
    {
      "form": "keystone species",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "keystone species"
      },
      "expansion": "keystone species (plural keystone species)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "flagship species"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Ecology"
      ],
      "examples": [
        {
          "ref": "2018, Tim Flannery, Europe: A Natural History, page 227:",
          "text": "Megafauna are called ʻkeystone speciesʼ because when they become extinct the entire arch of the ecosystem can collapse.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A species that exerts a large, stabilizing influence throughout an ecological community, despite its relatively small numerical abundance."
      ],
      "links": [
        [
          "ecology",
          "ecology"
        ],
        [
          "species",
          "species"
        ],
        [
          "stabilizing",
          "stabilizing"
        ],
        [
          "ecological",
          "ecological"
        ],
        [
          "small",
          "small"
        ]
      ],
      "raw_glosses": [
        "(ecology) A species that exerts a large, stabilizing influence throughout an ecological community, despite its relatively small numerical abundance."
      ],
      "topics": [
        "biology",
        "ecology",
        "natural-sciences"
      ],
      "wikipedia": [
        "keystone species"
      ]
    }
  ],
  "word": "keystone species"
}