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Angler's Role in Combating UK Invasive Species
In the serene waters of the UK, we anglers find more than just recreation; we find a rich tapestry of life, a biodiversity that makes our angling experiences unique. However, our waters are under threat from invasive species in the UK, that jeopardise this delicate balance.
Our waterways, including rivers, canals, lakes, and ponds, face threats from foreign plants and animals. These species have entered our ecosystems, often introduced for decorative or farming purposes.
As anglers, we believe in more than just the thrill of the catch; we stand firm in our commitment to preserving the delicate balance of our aquatic environments. As dedicated anglers, we have a pivotal role in mitigating their impact, this article will explore how to spot them and what to do when you do.
Understanding Invasives: The Unwanted Guests
Invasive Species are species that are not native to a specific location (an ecosystem) and that tend to spread, causing damage to the environment, human economy, or human health. Their rapid growth and spread often threaten the survival of native plants and animals, alter ecosystems, and create economic burdens.
Invasive species include plants, animals, and other organisms (e.g., microbes). Their introduction and spread are typically facilitated by human actions, intentionally or accidentally.
What fish are invasive in UK?
Topmouth Gudgeon: Native to Asia, are invasive fish that disrupt ecosystems by out-competing locals and preying on invertebrates and eggs. Their territorial nature leads to densities exceeding 60 fish per square metre.
Prussian Carp: Resembling brown goldfish, can quickly increase in number, affecting native fish and fisheries. They have a unique reproduction method, using other fish species' sperm for fertilization. They are an invasive species monitored by the Environment Agency.
North American Black Bullhead Catfish: Introduced to Great Britain in 1885, the North American black bullhead catfish hasn't become widespread here unlike in Europe. They're invasive, compete with native fish for food, are predatory, and can carry diseases and parasites harmful to native species.
These invasive fish species, often introduced accidentally or due to human activities, can disrupt our native aquatic ecosystems.
Many of these foreign species die off because they can't handle our climate. Some survive without spreading much. However, a few spread quickly without their natural predators to control them, harming our waters and fisheries.
Which fish is not native to British water?
While species like Zander, Wels Catfish, and Grass Carp offer exciting sports for anglers, it's important to remember they are non-native to the UK. Stocking of these fish is limited, and anglers must exercise caution to prevent their unintentional transfer to other waters. Always prioritize the health of our ecosystems while enjoying the thrill of the catch.
Beyond Fish: Other Invasive Aquatic Threats
Invisible freshwater pests can spread through just a drop of water. Even unseen, they pose a threat. Ensure you Check, Clean, and Dry your gear when switching between waterways.
UK Invasive Plant Species Identification
Several aquatic plants have become problematic invaders in UK waters. Invasive plants, like the rapidly growing floating pennywort found in the UK since 1990, can drastically harm waterways and hinder recreational activities.
Floating pennywort or water fern might seem harmless at first glance, but these aquatic plants, foreign to our waters, can choke the life from our ecosystems, overshadowing native flora and impacting fish habitats.
Creeping Crustaceans: Mitten Crabs and Signal Crayfish
The mitten crab's intriguing name and the signal crayfish's distinct appearance might interest some. Yet, their presence in UK waters is a concern. With a growing appetite for our native species, these crustaceans pose a substantial threat.
Invasive species like killer shrimp, and zebra mussels, also pose threats to our freshwater ecosystems.
They reproduce quickly, threatening native species through competition, predation, and disease transmission. For instance, killer shrimp prey on native shrimp, fish fry, fish eggs, and other aquatic life.
The Angler's Responsibility: Reporting & Preventing the Spread
How do you report non-native species?
Being the eyes and ears on the ground (or in this case, on the water), anglers can make a huge difference. Spotting and reporting non-native species in time can aid in swift action, preventing potential ecosystem disruption.
If you spot unfamiliar fish, please call the Environment Agency 24-hour hotline at 0800 80 70 60 and inform the local angling club. The EA will act promptly to address the situation.
You can also take images and submit them to alert_nonnative@ceh.ac.uk.
Prevention First: Raising Awareness
As climate change progresses, the threat from invasive species in the UK is expected to rise. While warmer summers might curb the spread of species preferring cooler waters, they could expedite the expansion of other species.
As anglers, we cannot stress enough the danger of inadvertently transferring species between waters. Fishing nets, gear, and even fishing boots can be culprits. It's time to spread the word and ensure our fishing community is equipped with this knowledge.
Collaboration in Action: Partnering for a Cleaner Tomorrow
Supporting organisations such as The Rivers Trusts and the Riverfly Partnership’s Angling Monitoring Initiative, we anglers can develop robust strategies to control these invasive threats. Let us ensure our waters remain pristine for generations of anglers to come.
Practical Guidance for Anglers
Let's also be vigilant against the spread of non-native species. The Check Clean Dry campaign provides tips on minimizing transfer risks.
Before moving between lakes and rivers, take time to clean and dry your waders, nets and gear. Simple actions can significantly reduce the risk of transferring diseases and invasive species.
Reducing Disease Transfer Between Waters
1. Check your fishing equipment: Inspect your equipment and clothing for any debris or organisms after leaving a waterway. Discard any found debris on the bank.
If you discover any later, dispose of it in the trash, not down drains.
2. Thorough Cleaning: Before and after each use, ensure all equipment, from rods to boots, is meticulously cleaned.
3. Heat Treatment: Submerging fishing nets and tools in hot water (above 45°C) for a quarter-hour eradicates unseen pests.
4. Drying: Ensure all your equipment is dried properly. While drying neutralises most freshwater pests, items retaining even a hint of dampness can become a haven for threats like killer shrimp for multiple weeks. Ensure everything is fully dry, both inside and out, to confirm the pests are eliminated.
Additionally, avoid transferring water-soaked groundbait from one location to another.
Maintenance and Cleaning Techniques
1. Regular Rinses: After every fishing trip, rinse your nets, rods, and other equipment to dislodge potential contaminants.
2. Scheduled Soaks: Set aside time regularly to soak your tools in hot water, ensuring a deep clean that targets hard-to-see pests.
3. Storage: Store your equipment in a dry, cool place. If possible, use dehumidifiers or moisture-absorbing packets to eliminate any remaining dampness.
4. Stay Updated: Keep abreast with the latest cleaning solutions and techniques. Sometimes, a simple solution can drastically reduce the risk of disease transfer.
Remember, the longevity of our beloved waters and the species within hinges largely on these small but significant habits. Let's fish responsibly!
The health of the UK's precious aquatic ecosystems rests not just with organisations or regulatory bodies, but significantly with us, the angler community. Our actions, no matter how small, can create ripples that can safeguard these habitats. As guardians of these waters, we must rise to the challenge of combating invasive species.
In our efforts to combat the spread of invasive species, it's crucial to highlight the dual benefit of the cleaning and drying measures we advocate for. Not only do these steps prevent the transfer of non-native species, but they are also essential in halting the spread of aquatic diseases.
Remember, it's up to each one of us to uphold these practices and report any sightings of invasive species. By doing so, we ensure the health and vitality of our waters for generations to come.
By staying vigilant and proactive in our practices, we not only preserve the rich biodiversity of our waters but also ensure that future generations can enjoy the same thrilling experiences of angling that we cherish today.
Let's commit to being part of the solution, ensuring every cast, catch, and release underscores our dedication to a healthier aquatic ecosystem. Together, let's make waves in the fight against invasive species!
FAQ On Invasive Species
What is a non native species?
Non-native species (NNS) are those introduced outside their natural habitat due to human actions. While many NNS benefit us as crops, pets, or timber, 10-15% become invasive, harming the environment, economy, or health.
Are all non-native species invasive?
Not every non-native species becomes invasive. For instance, in the UK, while grass carp is not native, it has become a popular catch without being overly invasive. For a species to be invasive, it must easily adapt to its new environment.
What are the red finned fish in the UK?
The sight of red-finned fish might spark curiosity in many anglers. These species, often roach or hybrids, are native but have seen variations leading to vibrant red fins. Their origins and genetic makeup remain subjects of study.
Additional Resources and Links
For those keen on diving deeper or reporting sightings of invasive species, we've curated a list of resources. Connect with local environmental agencies, and equip yourself with knowledge that can make all the difference.
- Environmental Agency
- Angling Trust On Invasive Species UK
- Fish Species Identification
- GB Non-native Species Secretariat (NNSS)
Together, let's cast our nets for a brighter, more sustainable angling future.
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