Egeria densa

http://www.issg.org/database/species/ecology.asp?si=289&fr=1&sts=sss

http://www.chs.ecu.edu.au/wetlands/cmccullough/publications/McCullough_1997.pdf

http://www.ecan.govt.nz/publications/General/Egeria_July_2003_web.pdf

Lemna minor

http://www.rook.org/earl/bwca/nature/aquatics/lemna.html

http://www.fcps.edu/islandcreekes/ecology/duckweed.htm

http://www.aquaticplantcentral.com/forumapc/plantfinder/details.php?id=131

Porcellio scaber

http://interface.creative.auckland.ac.nz/database/species/ecology.asp?si=1460&fr=1&sts=&lang=EN

http://www.terrain.net.nz/friends-of-te-henui-group/local-insects/wood-lice.html

http://www.earthlife.net/insects/woodcare.html