Eastern Prickly Pear Cactus - Point Pelee

The endangered eastern prickly pear cactus is a focal species for Lake Erie Sand Spit Savannas (LESSS), one of the most imperiled terrestrial ecosystems in North America. Although monitoring of the of eastern prickly pear cactus has occurred within the park since 1971, accurate estimation of population trends is not possible due to variability in sampling techniques. Presently Point Pelee National Park uses a 10x10m grid to sample selected plots of different densities.

Data and Resources

Additional Info

Field	Value
Last Updated	April 17, 2026, 19:43 (UTC)
Created	April 17, 2026, 19:43 (UTC)
contact_email	tammy.dobbie@pc.gc.ca
contact_person	{}
criticality_level	["educators", "nongovernmental_organizations", "scientists", "students"]
data_dictionary	[]
geographic_scope	[]
open_canada_collection	primary
open_canada_date_published	2017-10-01 00:00:00
open_canada_keywords	{"fr": ["oponce de l’Est", "Opuntia humifusa", "espèce en voie de disparition", "grilles d’échantillonnage", "cordon sablonneux du lac Érié", "comté d’Essex", "Ontario"], "en": ["Eastern Prickly Pear Cactus", "Opuntia humifusa", "Endangered Species", "Sample Grids", "Lake Erie Sand Spit", "Essex County", "Ontario"]}
open_canada_subject	["nature_and_environment"]
sensitivity_level	unrestricted
title_fr	Oponce de l’Est – Pointe‑Pelée
update_frequency	as_needed