Pondweed and wildlife

15.10.24

We keep ponds, lakes, and other bodies of water free of pondweeds at The Aqua Contractor. Not only does this bring commercial benefits to our clients, but it’s an invaluable process for protecting wildlife habitats for birds, fish, and insects.

While vegetation is natural and beneficial, uncontrollable pondweeds can cause more harm than good to delicate ecosystems. Unmaintained pondweed can suffocate aquatic environments, disrupt the balance, and negatively impact wildlife. This is where our aquatic weed removal service plays a critical role in restoring the health of ponds and other water bodies.

What are pondweeds?

Pondweeds (or aquatic plants) grow in water submerged, floating, or emergent. While native species of pondweed play an important ecological role and provide a cover for fish and supporting invertebrates, some non-native and invasive species like Canadian pondweed (Elodea canadensis) or curly-leaf pondweed (Potamogeton crispus) can quickly choke ponds and water channels and clog waterways. When they monopolise nutrients, it’s not good for wildlife either.

What are the negative impacts of pondweed on wildlife?

Oxygen levels

Rampant pondweed can deplete water oxygen levels. In the daytime, pondweeds produce oxygen through photosynthesis, but they likewise consume oxygen through respiration at night. Abundant plant matter causes oxygen levels to plummet at night, creating conditions where fish and other aquatic animals struggle to survive. A scarcity of oxygen can cause the die-off of aquatic organisms, disrupting the entire food chain.

lack of light

Clumps and layers of floating pondweed or algae mats can block sunlight from penetrating the water’s surface. Sunlight is essential for submerged aquatic plant growth, which fish and invertebrates rely on for shelter and food. Light deprivation can cause plants to struggle or die off, as well as depleting water resources.

Stagnant water

Pondweed reducing water flow can lead to sediment buildup, degrading the habitat further. Stagnant water is arguably poorer quality water in which potentially harmful bacteria and algae can thrive. Frogs, dragonflies, and some fish species depend on clean water for survival.

Biodiversity dips

Invasive pondweed species outmanoeuvring native plants for nutrients, space, and sunlight reduces the biodiversity of the pond and detracts from the ecosystem. Native plants provide essential food and shelter for local wildlife and balance the ecosystem.

Harmful to wider species

Pondweeds can likewise be a menace for ducks, swans, and other water birds. These animals rely on open water for swimming and feeding. Thick mats of pondweed can restrict their movement, make foraging difficult, and even trap them in denser patches.

The benefits of Pondweed Clearance

Regular pondweed clearance brings several benefits that help maintain a healthy ecosystem. Here’s why pondweed management is crucial for supporting biodiversity

Improved Water Quality

Clearing unwieldy and unsightly pondweed helps improve water circulation and aeration, ensuring day and night oxygen stability levels. Well-oxygenated clean water also supports a greater diversity of aquatic life.

The light gets in

Once we’ve cleared pondweed, sunlight penetrates deeper into the water, reaching submerged aquatic plants that support insects, fish, and other wildlife. Improved light penetration likewise limits the growth of harmful algae.

Reduce stagnation and sediment

Timely and consistent pondweed removal promotes better water flow, helping to prevent the buildup of sediment and lowering the risk of stagnation. Moving water discourages bacteria growth and is cleaner and healthier for wildlife.

Support for Native Species

Native plants stand a better chance when invasive pondweeds are managed properly. They benefit local wildlife, providing a habitat and food for fish, amphibians, and birds. Regular pondweed clearance maintains a balanced environment, supporting native species, helping wildlife thrive. By investing in proper pond management, we can help you protect these precious water habitats.

Get in touch with The Aqua Contractor today.

Sources:

wildlifetrusts.org

freshwaterhabitats.org.uk

britishecologicalsociety.org