Yes, given the importance of dragonflies, more should be done to protect them. Dragonflies are a major predator of mosquitoes and biting flies that are a nuisance. I don't know of anything on a large scale that is being done to protect them. It is very important that they don't go extinct.
One of the main foods of the Dragonfly are mosquitoes. And I don't think anyone would miss the mosquitoes if their numbers were lowered. I had no idea they were as important to aquatic life either until I did some research for this question. If they are so important I feel like we should take steps to preserve them just as we are currently doing with Bees.
With what has been happening to bees in recent years and their mysteriously disappearing numbers, it is crucial that we as humans do all that we can to protect other essential species, even if they're not cute and cuddly. Dragonflies are one of these. They are very important insects, and they need to be fiercely protected.
Dragonflies control the pest population. They help take care of biting insects that can be hazardous to human health as well as insects that can harm vegetation.
Dragonflies are often referred to as a mosquito hawk in North America. Their carnivorous appetite and fierce jaws allow them to eat anything they can catch, which they usually do while flying. Dragonflies help keep the mosquito and biting fly population in control, something human skin can appreciate. Dragonflies also eat aphids, which are tiny insects that are capable of destroying crops and other plants.
Dragonflies have very large eyes and incredible eyesight that allow them to seek out prey. Their four translucent wings allow them to hover and rapidly accelerate. They also breathe water through gills in their abdomens and use this water by quickly expelling it and using it like a jet-pack to propel them quickly though the air. Dragonflies live near lakes, ponds and streams through their larvae and adult lives. Their predators include frogs, fish, insect-eating birds and large spiders. Creating a garden pond is a good way to help conserve the dragonfly population and allow their survival skills to help people by ridding the area of unwanted biting insects.