It’s easy to get frustrated when you’re swatting away a persistent wasp or cleaning up after a swarm of pigeons, but the truth is that the most irritating creatures are often the ones keeping our ecosystems from collapsing. While we tend to view these animals as nothing more than a nuisance at a summer barbecue or a threat to our garden plants, theyβre usually the ones doing the dirty work behind the scenes.
From natural pest control to essential pollination, their “annoying” habits are actually the very things that keep our food chains stable and our environment healthy. If these species suddenly vanished, we’d quickly realise that a bit of irritation is a very small price to pay for our own survival.
Mosquitoes
It feels almost offensive to include them, but here we are. Mosquitoes are one of the most universally despised insects alive, and the diseases they carry make them genuinely dangerous in many parts of the world. But they’re also a critical food source for hundreds of species of birds, bats, fish, and insects that depend on them at various life stages.
Mosquito larvae are particularly important in aquatic ecosystems, where they form a significant part of the diet for fish and other water-dwelling creatures. Some plants also rely on mosquitoes for pollination. Wiping them out entirely, which has been proposed more than once, would send shockwaves through food chains that are difficult to fully predict.
@beyond_blathers Replying to @montyc19 keep these good questions coming! #sciencecommunicator #entomologytok #womeninscience #sciencepodcaster #wetlandecologist β¬ original sound – Beyond Blathers Podcast π
Wasps
Nobody’s favourite guest at a summer barbecue, but wasps do an enormous amount of quiet ecological work that tends to go unacknowledged. They’re predatory insects that hunt caterpillars, flies, aphids and other creatures that would otherwise devastate garden plants and crops.
They also pollinate plants, albeit less efficiently than bees, and fig wasps in particular are entirely responsible for pollinating fig trees. Without them, figs simply wouldn’t exist. Some species of wasp also produce venom compounds that are being studied for potential use in cancer treatment, which puts them in a slightly different light, even if they’re still absolutely insufferable at picnics.
Bats
Bats divide opinion sharply, but the case for them is strong. A single bat can eat thousands of insects in a single night, which makes them one of the most effective natural pest controllers we have. In agricultural terms, their contribution to keeping insect populations in check saves billions of pounds worth of crop damage globally every year.
Many bat species are also pollinators and seed dispersers, particularly in tropical regions, where they’re responsible for spreading the seeds of plants that other animals can’t reach. Losing bat populations, which are already under significant pressure in many parts of the world, would have serious consequences for both farming and wild ecosystems.
@hayley_wood A little repost because Iβm in England visiting my family. Enjoy some bat facts π¦π€ #environmentalscience #wildlifebiology #conservation #bats #funfacts β¬ original sound – Hayley πΏπ¦π»
Rats
Rats have a genuinely terrible reputation and, in urban environments especially, it’s not entirely undeserved. But in the wild, they play a more complex role than most people give them credit for. They’re seed dispersers, helping to spread plants across wide areas, and they form an important part of the food chain for owls, foxes, snakes and various other predators that would struggle without them.
In some ecosystems, they also aerate soil through their burrowing, which benefits plant growth. None of this makes them welcome in your kitchen, but it does mean their complete removal from any ecosystem tends to cause problems further up the chain.
Vultures
They’re not conventionally appealing, but vultures are doing some of the most important sanitation work in nature. They consume carcasses that would otherwise rot in the open, which reduces the spread of diseases like anthrax, botulism, and rabies. Their digestive systems are uniquely equipped to destroy bacteria that would be lethal to most other scavengers.
In parts of Africa and Asia where vulture populations have collapsed, largely due to poisoning and habitat loss, the consequences have been significant, with increased disease spread and surging rat populations filling the scavenging gap in far less effective and more problematic ways.
Flies
Houseflies are revolting, and the reasons are well documented: they land on waste, they spread bacteria, they’re relentless. But flies as a broader group are doing a huge amount of ecological heavy lifting. Many species are important pollinators, particularly in cooler climates and high altitudes, where bees are less active.
Blowflies and other carrion flies break down dead matter and return nutrients to the soil, and fly larvae are a vital food source for countless birds and other insects. The class of flies is enormous and varied, and most of the work they do happens quietly and without anyone noticing until the balance is disturbed.
@ayavega_sci The importance of flies Imagine earth without them! #nature #science #insects #foryoupage #earth β¬ Clair de lune/Debussy – γγ€
Ants
Ants in the house are maddening, particularly when they’ve found something sweet and the whole colony has apparently been notified within minutes. But outside, ants are remarkable ecosystem engineers. They aerate soil more effectively than almost any other creature their size, improve drainage, redistribute nutrients and shift enormous quantities of organic matter through their constant activity.
Many plants have evolved specifically to rely on ants for seed dispersal, a relationship so established that some seeds have structures on them designed specifically to attract ants to carry them. Ant colonies also regulate populations of other insects, keeping various species from getting out of hand.
Hornets
Bigger, louder and more alarming than wasps, hornets have an even worse reputation. But they’re highly effective predators of insects that damage trees and crops, and in some ecosystems they’re one of the primary controllers of caterpillar and fly populations.
Asian giant hornets, which have attracted significant attention for their impact on honeybee colonies, also play a role in their native ecosystems that is more balanced than the coverage suggests; it’s their introduction to non-native environments where things go wrong. Like most creatures, they cause problems when they’re somewhere they don’t belong, rather than in the ecosystem they evolved alongside.
Pigeons
Urban pigeons are messy, pushy and seemingly incapable of personal space, but they’ve been ecologically useful to humans for thousands of years, and in the wild their relatives play genuine roles in seed dispersal across wide areas. The dodo, famously, was a pigeon, and its extinction had knock-on effects for the plants that depended on it. In cities, pigeons also serve as a food source for peregrine falcons and other birds of prey, and the resurgence of urban peregrine populations in the UK is directly tied to the reliable food supply that feral pigeons provide.
Silverfish
Silverfish are unsettling to most people: fast, pale and usually found somewhere dark and damp where you weren’t expecting them. But they break down organic matter including dead skin cells, hair and decaying plant material, returning those nutrients to the environment.
They’re also prey for spiders, centipedes and other insects, and their role as decomposers, while not glamorous, is part of the broader recycling system that keeps organic waste from accumulating. They’re not causing any harm beyond the shock of existing, and the ecosystem services they provide, modest as they are, are still genuine.