Jak si předat proměnnou po kliknutí na odkaz - PHP ...

    $sql_dotaz = "
    SELECT
      hemisphere.text AS hemisphere,
      subfamily.text AS subfamily,
      tribus.text AS tribus,
      genus.text AS genus,
      species.text AS species,
      beatle.synonymum AS synonymum,
      objevitel.text AS objevitel,
      beatle.rok AS rok_objeveni,
      beatle.id as beatle_id,
      beatle.brouk_id as ID
    FROM
      hemisphere,
      subfamily,
      tribus,
      genus,
      species,
      beatle,
      objevitel
    WHERE
      hemisphere.id = beatle.id_hemisphere AND
      subfamily.id = beatle.id_subfamily AND
      tribus.id = beatle.id_tribus AND
      genus.id = beatle.id_genus AND
      species.id = beatle.id_species AND
      objevitel.id = beatle.id_objevitel AND
      beatle.brouk_id = (
        SELECT beatle.brouk_id AS brouk_id
        FROM beatle, genus, species
        WHERE
          beatle.id_species = (SELECT species.id FROM species WHERE species.text = '$_GET[species]') AND
          beatle.id_genus = (SELECT genus.id FROM genus WHERE genus.text = '$_GET[genus]') AND
          beatle.id_tribus = (SELECT tribus.id FROM tribus WHERE tribus.text = '$_GET[tribus]')
        LIMIT 1) AND
      (beatle.synonymum = 1 OR beatle.synonymum = 0)
    ORDER BY
      beatle.synonymum,
      genus.text,
      species.text,
      rok_objeveni
    ASC
    ";

    $sql_dotaz = "
      SELECT
        genus.text AS genus,
        genus.id AS id_genus,
        species.id AS id_species,
        species.text AS species,
        beatle.brouk_id AS id_brouk,
        (SELECT COUNT(fotky.brouk_id) FROM fotky WHERE fotky.brouk_id = beatle.brouk_id) AS fotky
      FROM
        genus,
        species,
        beatle
      WHERE
        beatle.synonymum = 0 AND
        beatle.id_tribus = (SELECT tribus.id FROM tribus WHERE tribus.text = '$_GET[tribus]' LIMIT 1) AND
        beatle.id_genus = genus.id AND
        beatle.id_species = species.id
      ORDER BY
        genus,
        species
        ASC
        ";