EDIT

    if (isset($media[0])) {

      // due to a bug the portal/taxon/{uuid}/media service only delivers a filtered media object

      // which only contains the thumbnail representation even if the height and width filters are not set.

      // --> #6970

      $preferred_media = cdm_ws_get(CDM_WS_MEDIA, $media[0]->uuid);

      $preferred_representations = cdm_preferred_media_representations($preferred_media, array(

        'image/jpg',

        'image/jpeg',

        'image/png',

        'image/gif',

      ),

        $taxon_profile_image_settings['maxextend'],

        $taxon_profile_image_settings['maxextend']

      );

      if(count($preferred_representations) > 0){

        $representation = array_shift($preferred_representations);

        $representationPart = $representation->parts[0];

        $attributes['alt'] = $representationPart->uri;

        if (!empty($taxon_profile_image_settings['media_uri_query'])) {

          $representationPart->uri = $representationPart->uri

            . (strpos($representationPart->uri, '?') !== FALSE ? '&' : '?')

            . $taxon_profile_image_settings['media_uri_query'];

        }