Decline in Long-Spined Sea Urchin Populations​​

The article addresses a concerning decline in long-spined sea urchin populations, posing a significant threat to coral reef ecosystems. Weekly monitoring in the Matemwe lagoon aims to gauge the impact of this decline on ecological balance.


We’re currently witnessing a troubling trend: a significant decrease in the population of long-spined sea urchins. This decline is evident from symptoms such as spine loss, excessive mucus secretion, and reduced mobility among the sea urchins. Such a phenomenon poses a grave threat to the delicate equilibrium of our coral reef ecosystems.

Why doest this matter? 
A decline in sea urchin numbers often results in unchecked algae growth on coral reefs, leading to what scientists term a « phase shift. » This transition can tip the balance in favor of algae, causing them to outcompete corals and fundamentally alter the reef’s natural ecosystem.


Our Strategy? 
Our team is monitoring sea urchin populations on a weekly basis within the Matemwe lagoon. This surveillance will help us ascertain whether the observed die-off will impact the lagoon and potentially disrupt its ecological balance.

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