Norfolk Hawker Dragonfly resting on a reed.
Image by
Steph Ford
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So here we are at the end of the season! We seasonal education officers will soon be moving on to pastures new, but before we do here is a taster of our experiences with freshwater invertebrates…
Before my time with Norfolk Wildlife Trust I had never seen a spindly water stick insect, a damselfly nymph emerging from its water-soaked skin to bask on a reed, or a dragonfly nymph chomping hungrily on phantom midge larvae. I thought I was well versed in the goings-on of the freshwater invertebrate world, but during my time as a seasonal my knowledge has increased ten-fold.
I have seen how absorbing it is for families to catch a net of squirming invertebrates, to gaze at the life dispersing in their water-filled tray as they empty their net, and to then put the correct name to each of the squiggling creatures. It’s a great chance to observe the behaviour of the species in the trays- greater water boatmen swimming on their backs through clusters of oxygenating pond weed, Pond Snails gliding lazily across the base of the trays, cased caddis fly larvae camouflaging themselves in their hollow stick homes. Looking down from above, it’s like a whole secret world in a white tray; fights, life cycles and hunting all going on, oblivious to us. It’s a window in on a world rarely seen, but constantly challenged by our actions that can either be positive, such as providing new habitats, or detrimental, such as spraying pesticides or fertilisers that end up in the water. I believe letting children into this realm of smooth skins and gnashing jaws gives them an insight into their responsibility of care to these creatures, and may well end up being the beginning of a life-long passion to protect wildlife.
Great diving beetle larvae eating freshwater
shrimps, photo by Brian Eversham
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Male Stickleback, photo by A.J Thursby
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