- October 30, 2021
- Posted by: OptimizeIAS Team
- Category: DPN Topics
Subject – Environment
Context – Goa’s pilot seaweed farm explores viability of these climate-smart algae
- “Seaweed” is the common name for countless species of marine plants and algae that grow in the ocean as well as in rivers, lakes, and other water bodies.
- Some seaweeds are microscopic, such as the phytoplankton that live suspended in the water column and provide the base for most marine food chains.
- Some are enormous, like the giant kelp that grow in abundant “forests” and tower like underwater redwoods from their roots at the bottom of the sea.
- Most are medium-sized, come in colors of red, green, brown, and black, and randomly wash up on beaches and shorelines just about everywhere.
- They are the primitive, marine non-flowering marine algae without root, stem and leaves, play a major role in marine ecosystems.
- Seaweeds, found mostly in the intertidal region, in shallow and deep waters of the sea and also in estuaries and backwaters.
- The southern Gulf of Mannar’s rocky intertidal and lower intertidal regions have rich populations of several seaweed species.
- Seaweeds exhibit highest photosynthesis efficiency due to moist conditions.
- They contribute to about 50% of all photosynthesis in the world.
Benefits of seaweed –
Applications of seaweed–
Seaweed in India –
- Rotting seaweed is a potent source of hydrogen sulfide, a highly toxic gas, and has been implicated in some incidents of apparent hydrogen-sulphide poisoning. It can cause vomiting and diarrhea.
- The so-called “stinging seaweed” Microcoleuslyngbyaceus is a filamentous cyanobacteria which contains toxins including lyngbyatoxin-a and debromoaplysiatoxin.
- Direct skin contact can cause seaweed dermatitis characterized by painful, burning lesions that last for days.