Coral reefs are retreating from equatorial waters and establishing new reefs in more temperate regions, according to new research in the journal Marine Ecology Progress Series. The researchers found that the number of young corals on tropical reefs, the same way it is shifting other marine species. The clarity in this trend is stunning, but it not yet known whether the new reefs can support the incredible diversity of tropical systems. Warm oceans are becoming favourable for corals to settle and grow in new regions. The sub-tropical reefs could provide refuge for species challenged by climate change and new opportunities to protect these fledgling ecosystems.
Spawning is out of sync for at least three widespread coral species in the Red Sea. And warmer seawater temperatures could be playing a role. Records from the 1980’s suggest that swathes of corals from particular species let colourful egg-sperm bundles float out of their tiny mouths. The sex cells separate from one another, gaining a chance at fertilization during the brief time that they survive on their own in sea water. The three species no longer synchronize their species-wide gamete releases. If this continues, the species might dwindle away in the region.
Matter referenced from:
- The Speaking Tree, Times of India Publications; Ahmedabad Ed.November 21st July, 2019, pp.05- Did You Know? section entitled ‘Coral Reefs Shifting’ by sciencedaily.com.
- The Speaking Tree, Times of India Publications; Ahmedabad Ed.November 6th October, 2019, pp.05- Species section entitled ‘Climate Change hits Coral Sex’ by sciencenews.org.
By: Dr. Bhawana Asnani.
Happy to see Reviews, Additions, Suggestions and Comments, further.
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