I plan to use these data for environmental niche modelling, but is too much time consuming to do it one by one. Is there any way to download all occurences for a determined species?
I suggest you post your request on the forum of observations.org http://forum.waarneming.nl/smf/index.php?board=108.0 or just contact the site admins: [email protected].
I don't think there is a straight forward export function (unless it's your own data you want to export)