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Ducks Unlimited Canada has released a comprehensive report that guides future recovery efforts at the Fraser River Estuary in the Canadian Business Journal.

Sally, British Columbia, March 31, 2022 (GLOBE NEWSWIRE) — Areas that have reduced habitat loss due to human activity over the past 40 years. More projects continue to be proposed. However, reports show that the success of these remediation projects varies.

A new detailed report by Ducks Unlimited Canada (DUC), the most comprehensive analysis of floodplain projects at the mouth of the Fraser River to date, highlights the factors that make some projects more successful than others. I am.

Beginning in the spring of 2021, local wetland plant ecologist Daniel Stewart and DUC conservation engineers have launched a study to evaluate 27 wetland restoration projects and 9 natural reference wetlands at the mouth of the Fraser River, with these results 2016. Pooled with similar data for the year’s report. These data were used to model the retreat of wetlands, the predominance of native plant species, and the potential causes behind species richness in these locations. In their findings detailed in their report entitled Factors Affecting the Sustainability of Floodplains Created at the Fraser River Estuary:

  • Wetland retreat was observed in 40 (51%) of the 78 created wetlands surveyed, and it is estimated that 23,553 square meters, or 9.3% of the total area of ​​sampled created wetlands, was lost.
  • There is more than one factor that can determine the loss of wetland retreat. The site design, boat wakes, and the impact of grazing on Canadian goose food are highlighted. However, changes in sedimentary processes, sea level rise, shade, and the effectiveness of monitoring are all possible causes and need further investigation.
  • Conservation infrastructure, especially debriefing and offshore structures such as the Marina Dock and the log storage boom, may mitigate the recession, but sites built on the northern arm of the Fraser estuary average 12% more recession. And the recession increased at an average rate of 1%. Cents per kilometer upstream between sites.
  • The predominance of primordial plants decreased at an average rate of 1 percent per kilometer upstream of the wetlands created. This reflects an eastward increase in the predominance of exotic plants, including invading species such as yellow iris, loosestrife, and reed canary grass.
  • Contrary to this trend, invasive cattails dominate the outside of some estuaries. When present, cattails often surpass native vegetation.

Eric Balke, DUC Conservation Program Specialist and Report Co-author, said: This suggests that if the site is properly designed, implemented and monitored, the project will be successful for decades and have some resilience. ”

“It’s important to learn from the past so that future restoration projects can be delivered in a way that allows for habitat loss,” said Sarah Nathan, British Columbia Operations Manager at DUC.

According to Balke, this report suggests that managers need to plan for the inherent risks and trade-offs associated with designing a project location. “For example, sites built further upstream may be more vulnerable to recession and domination by non-native plants. Closed bay designs may be more vulnerable to cattail invasion. Also, low altitude areas may be more resilient to species invasion, but may be more vulnerable to recession. ”

Nathan states that the report’s findings will enhance DUC’s ongoing efforts to apply its conservation knowledge to find solutions that protect important habitats within this important estuary ecosystem. ..

“We have worked with our partners to focus on restoring major wetland habitats, including the loss of floodplains around the Fraser River, which renews salmon resources and various marine life. The aim is to improve the habitat of waterfowl and waterfowl, “says Nathan. “We believe that the prosperity of the Fraser River estuary is underpinned by on-site conservation efforts.”

Factors affecting floodplain sustainability, produced in the Fraser River Estuary Report, support carbon sequestration and restore floodplains throughout the estuary to restore salmon habitat over the next two years. The beginning of a longer investment by the DUC. DUC uses the results of the report to notify the restore operation and identify the compensation site that failed the restore.

The study is funded by the BC Wildlife Federation Wetlands Workforce project and is funded by British Columbia’s Financial Support as part of a $ 10 billion COVID-19 response through the British Columbia’s Real Estate Foundation and the British Columbia’s Healthy Watersheds Initiative. it was done. ..

To request a copy of the report and learn more about DUC conservation work at the mouth of the Fraser River, please visit ducks.ca/fraser-river-estuary.

Fraser River Estuary – Importance and Threat:

  • Within the largest city in western Canada, there is a life-threatening ecosystem known as the Fraser River Estuary. This is a vast network of waterways, swamps, eelgrass meadows, mud and sandy beaches.
  • Estuaries are important wintering areas for waterfowl and hemispherically important for migratory birds, and are home to hundreds of millions of migrating juvenile salmon that depend on these brackish water ecosystems to prepare for life in the sea. I am.
  • The expansion of cities and industries continues to undermine the ability of estuaries to maintain the diversity of life. Pollution, widespread dredging and embankments, urban sprawl, climate change, and large-scale industrial development now and in the future threaten estuary-dependent biodiversity.

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Ducks Unlimited Canada (DUC) is a leader in wetland conservation. A registered charity, DUC works with governments, industries, nonprofits, indigenous peoples, and landowners to protect waterfowl, wildlife, and wetlands that are important to the environment. For more information on DUC’s innovative environmental solutions and services, please visit www.ducks.ca.

  • Fraser River Estuary
  • DUC Preservation Technician and Report Co-author Daniel Hennigar


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Ducks Unlimited Canada has released a comprehensive report that guides future recovery efforts at the Fraser River Estuary in the Canadian Business Journal.

Source link Ducks Unlimited Canada has released a comprehensive report that guides future recovery efforts at the Fraser River Estuary in the Canadian Business Journal.

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