Yorke Peninsula and KI Face Algal Bloom Surge
Recent monitoring by state officials indicates an uptick in algal bloom activity in the Yorke Peninsula and Kangaroo Island regions. However, researchers express cautious optimism about potential alleviation. Professor Mike Steer, executive director of SARDI, emphasized the importance of continued monitoring through the summer and into autumn.
Current Status of Algal Blooms
Professor Steer noted a significant reduction in algal cells compared to previous months, revealing a positive trend in the data. The southwestern Yorke Peninsula, particularly around Innes National Park, is experiencing increased algal bloom activity, extending from Chinamans Hat Island to Browns Beach and Corny Point. Despite this, he highlighted a decrease in algal cell concentration, which could be favorable news.
Kangaroo Island Observations
On Kangaroo Island, algal blooms are reportedly moving westward near Stokes Bay, yet even there, signs of decline are evident. Despite these developments, both regions can expect to see ongoing incidents of dead fish and foamy water conditions. “Gill-breathing organisms are particularly affected due to damage from the algae,” Steer explained.
Impacts of Algal Blooms
- Decomposing algae depletes oxygen in water, leading to fish deaths.
- Foamy conditions will be prevalent, especially along the Yorke Peninsula, due to high wave energy.
- Surf conditions can disturb organic material, contributing to foaming events.
Advisories for Public Safety
IA State Health agencies recommend avoiding discolored or foamy waters, particularly for individuals prone to skin irritation. Official recommendations underscore the importance of public awareness regarding these environmental changes.
Environmental Drivers Behind Bloom Activity
Professor Steer attributed the recent algal blooms to substantial environmental factors. These include the significant Murray River flood and historic heatwaves observed in the past 40 years. He stressed that episodic coastal activities play a minimal role in influencing these large-scale ecological events.
Expert Insights on Algal Blooms
Ian Gibbins, a retired anatomy professor, highlighted citizen science observations. His reports indicate varying algal activity around Kangaroo Island and the Yorke Peninsula, challenging predictions on the blooms’ fluctuations. Symptoms reported by beachgoers, such as sore eyes, suggest lingering issues, even as testing shows low levels of Karenia in metropolitan waters.
Recent Testing Results
Testing conducted during the week beginning December 28 revealed promising results regarding Karenia levels:
| Location | Karenia Levels |
|---|---|
| Metropolitan Onshore Sites | No or low levels (20/21 sites) |
| Eyre Peninsula, Yorke Peninsula, and Fleurieu Peninsula | Zero or low levels |
| Whyalla Jetty | 14,000 cells per liter |
| Emu Bay Jetty (Kangaroo Island) | 27,820 cells per liter |
As authorities track these occurrences, it remains imperative for locals and visitors to stay informed and heed safety advisories issued by health officials. Continued vigilance will be crucial in managing the impact of algal blooms in the Yorke Peninsula and Kangaroo Island regions.
