What is a coast and its importance - Iczmpwb.org
What is a coast and its importance - Iczmpwb.org What is a coast and its importance - Iczmpwb.org
Significance of seagrass • Provide a habitat for Dugong dugon, only herbivorous marine mammal exist. • Also provide habitats for a wide variety of marine organisms, both plant and animal; these include meiofauna and flora, benthic flora and fauna, epiphytic organisms, plankton and fish, not to mention microbial and parasitic organisms. • Feeding ground for dugongs, turtles, fishes and sea urchins • Extraordinarily high rate of primary production. • Serve as a fishing ground, wave protection, oxygen production and protection against coastal erosion. • Seagrass meadows account for 15% of the ocean’s total carbon storage. The ocean currently absorbs 25% of global carbon emissions • It is estimated that seagrasses per square meter are capable of binding about 1000grams of carbon, every year.
Threats to seagrass ecosystem Natural threat • Damage to seagrass groups is mostly due to climatic changes, global warming which in turn refers to changes in oceans salinity levels, shift in water quality, increase in sea surface temperatures, frequency of natural disasters, and more. • Seagrasses are in global decline, with some 30,000 km 2 (12,000 sq mi) lost during recent decades. Anthropogenic threat • Coastal activities such as ports, harbours, construction, garbage dumps, urban pollution, industrial dumps, terrestrial erosion, coastal development, breakwaters, fish farming, aquaculture, eutrophication, siltation, dredging, anchoring, are taking heavy toll on the fragile plants. Pollution • Excessive input of nutrients (nitrogen, phosphorus) is directly toxic to seagrasses, but most importantly, it stimulates the growth of epiphytic and free-floating macro- and micro-algae. This weakens the sunlight, reducing the photosynthesis that nourishes the seagrass and the primary production results
- Page 1 and 2: Coast and its importance Dr. C. Rag
- Page 3 and 4: Top 10 largest coastal cities of th
- Page 5 and 6: Terminology of coastal regions
- Page 7 and 8: Tides Definition: The periodic rise
- Page 9 and 10: Coastal Environment of India - Cont
- Page 11 and 12: Types of Shores • Rocky Shore •
- Page 13 and 14: Rocky shore animals Sea urchin Turb
- Page 15 and 16: Sandy shore Molluscs Oliva Donax De
- Page 17 and 18: Adaptation of animals in sandy shor
- Page 19 and 20: Zonation in Sandy Shore
- Page 21 and 22: Grain size in muddy shore
- Page 23 and 24: Adaptation of animals in muddy shor
- Page 25 and 26: Coastal Ecosystems • Estuarine ec
- Page 27 and 28: Profile of an ideal estuary
- Page 29 and 30: Importance of Estuaries • Provide
- Page 31: Diversity of seagrass • Global co
- Page 35 and 36: Seaweed resources in Indian Coast S
- Page 37 and 38: Mangrove Ecosystem • Mangroves ar
- Page 39 and 40: Sl. No. State-wise status of mangro
- Page 41 and 42: Mangrove fauna of India (2359 speci
- Page 43 and 44: Threatened invertebrates in mangrov
- Page 45 and 46: Threats to Mangroves 1. Cattle graz
- Page 47 and 48: Acropora monticulosa Coral Reef Eco
- Page 49 and 50: Distribution of Coral Reefs in Indi
- Page 51 and 52: Diversity of Corals in A&N Islands
- Page 53 and 54: TYPES OF CORAL GROWTH FORMS Digitat
- Page 55 and 56: TYPES OF CORALLITES Ceroid: Adjacen
- Page 57 and 58: Location marks of Permanent Monitor
- Page 60 and 61: Percentage Live coral cover(%) in A
- Page 62 and 63: Corals of Great Nicobar Island Acro
- Page 64 and 65: Corals of Rutland Island Seriatopor
- Page 66 and 67: Corals of RJMNP Favia matthaii Plat
- Page 68 and 69: Coral Reef cover in North Reef Isla
- Page 70 and 71: Coral reef cover in RJMNP Rani Jans
- Page 72 and 73: Great Nicobar Island Great Nicobar
- Page 74 and 75: Coral Associate: Echinoderm diversi
- Page 76 and 77: Echinoderms - Holothurians Actinopy
- Page 78 and 79: Echinoderms of RJMNP Prionocidaris
- Page 80 and 81: Coral Associate: Molluscan diversit
Significance of seagrass<br />
• Provide a habitat for Dugong dugon, only herbivorous marine mammal ex<strong>is</strong>t.<br />
• Also provide habitats for a wide variety of marine <strong>org</strong>an<strong>is</strong>ms, both plant <strong>and</strong><br />
animal; these include meiofauna <strong>and</strong> flora, benthic flora <strong>and</strong> fauna, epiphytic<br />
<strong>org</strong>an<strong>is</strong>ms, plankton <strong>and</strong> f<strong>is</strong>h, not to mention microbial <strong>and</strong> parasitic <strong>org</strong>an<strong>is</strong>ms.<br />
• Feeding ground for dugongs, turtles, f<strong>is</strong>hes <strong>and</strong> sea urchins<br />
• Extraordinarily high rate of primary production.<br />
• Serve as a f<strong>is</strong>hing ground, wave protection, oxygen production <strong>and</strong> protection<br />
against <strong>coast</strong>al erosion.<br />
• Seagrass meadows account for 15% of the ocean’s total carbon storage. The ocean<br />
currently absorbs 25% of global carbon em<strong>is</strong>sions<br />
• It <strong>is</strong> estimated that seagrasses per square meter are capable of binding about<br />
1000grams of carbon, every year.
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