Year Organisation Materials
2001 English Nature (now Natural England) polythene sheeting & woven polypropylene
2005 USFWS welded wire
2009 Amphibian and Reptile Conservation smooth panels
2010 Queensland Department of Transport and Main Roads woven vinyl erosion control fencing & insertion rubber
2012 Vic Roads recycled polyethylene sheeting; galvanised roof purlin; fine wire mesh
2015 Western Transport Institute, Montana State University HDPE plastic; barrier wall; chain-link
2016
Ministry of Agriculture, Food and the Environment (Spain); Ontario Ministry of Natural Resources and Forestry (Canada); Wildlife Institute of India hardware cloth (Spain, Canada); chain-link (Spain, Canada); cement concrete wall (India);
2020 BC opaque fencing materials
2021 Caltrans thick plastic fencing materials; solid perforated visual barrier; woven polypropylene or polyethylene sheets
2022 IENE opaque smooth materials (metal, concrete, HDPE)