River water temperatures (OND)
Freshwater Update 65, May 2015
12 May 2015
Freshwater Update 65 brings you the latest information from our Freshwater & Estuaries centre, including water quality maps and information, as well as river flows.
Also, this month we released a new Freshwater Fish Calendar. Read the media release
River flows were below normal in March and for the three months January to March over most of New Zealand.
Troublesome aquatic weeds have been an issue for the Rotorua Te Arawa Lakes for decades, but what do we really know about what drives water weed problems?
When invasive aquatic weeds establish in a lake, they usually result in detrimental effects on native biodiversity, amenity and utility values.
The majority of current aquatic weeds were introduced to New Zealand via the aquarium and ornamental pond trade and these have been subsequently spread via deliberate spread and other human-mediated activities.
Invasive species continue to be one of the greatest threats to the Rotorua lakes and include not only water weeds, but other organisms too.