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Wednesday, November 25, 2020 | History

2 edition of Can mangroves minimize property loss during big storms? found in the catalog.

Can mangroves minimize property loss during big storms?

Saudamini Das

Can mangroves minimize property loss during big storms?

an analysis of house damage due to the super cyclone in Orissa

by Saudamini Das

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  • 36 Currently reading

Published by South Asian Network for Development and Environmental Economics in Kathmandu .
Written in English


Edition Notes

StatementSaudamini Das
SeriesSANDEE working paper -- no. 42-09
ContributionsSouth Asian Network for Development and Environmental Economics
The Physical Object
Paginationvii, 36 p. :
Number of Pages36
ID Numbers
Open LibraryOL24525776M
ISBN 109789937821810
LC Control Number2010327142
OCLC/WorldCa649085251

  “This was when we realized how stubbornly the mangroves can withstand tropical cyclones like Damrey,” said Vu Xuan Ngoc, a year old fish farmer. “This was a .   Coastal habitats including marshes, dunes, seagrass beds, mangrove and other coastal forests, kelp forests, oyster beds, and coral reefs help keep waves and storm . 01/08/ Tour of Mangrove Swamps. On our trip to Costa Rica, a class of Marietta College students disembarks to study a mangrove swamp. The mangrove swamp is a wetland - submerged only at high tide - and its placement between the shore and the coral reef in tropical areas makes it a crucial part of the ecology of the coral reef itself - hence its placement in this section otherwise dealing.


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Can mangroves minimize property loss during big storms? by Saudamini Das Download PDF EPUB FB2

Storm protection is an important regulating service provided by mangrove forests because they can shield inland property and lives during tropical cyclones. Theoretical as well as empirical. Storm protection is an important regulating service provided by mangrove forests because they can shield inland property and lives during tropical cyclones.

Theoretical as well as empirical research shows that mangroves provide protection from storm surge. But whether mangroves protect inland static property during storms is less explored.

Can mangroves minimize property loss during big storms?: an analysis of house damage due to the super cyclone in Orissa. By Saudamini Das. Abstract. This paper estimates the storm protection benefits on residential property in the Kendrapada district of Orissa (India) due to the mediation of mangrove forests during a super cyclone ().

Can Mangroves Minimize Property Loss during Big Storms. An Analysis of House Damage due to the Super Cyclone in Orissa. Can Mangroves Minimize Property Loss during Big Storms. An Analysis of House Damage due to the Super Cyclone in Orissa. By Saudamini Das. Abstract. This paper estimates the storm protection benefits due to mangroves during the super cyclone of in Orissa.

By combining GIS data with census information, the paper examines the mangrove Author: Saudamini Das. The researchers found that flooding racks up about $ billion every year in property damage, but that the presence of coastal mangroves, a salt-tolerant species of.

Abstract: Storm protection is an important regulating service provided by mangrove forests because they can shield inland property and lives during tropical cyclones.

Theoretical as well as empirical research shows that mangroves provide protection from storm surge. In Collier County, the team analyzed flood damages for storms and found that annual flood damages would increase by 25% should the county suffer the.

In Collier County, the team analyzed flood damages for storms and found that annual flood damages would increase by 25% should the county suffer the loss of its mangrove forests.

Mangroves are most effective in flood risk reduction where they are abundant and located in front of areas with high densities of people and property. A waxy coating on the leaves of some mangrove species seals in water and minimizes evaporation. Small hairs on the leaves of other species deflect wind and sunlight, which reduces water loss through the tiny openings where gases enter and exit during photosynthesis.

Mangroves annually reduce property damage by more than $US 65 billion and protect more than 15 million people. If current mangroves were. Mangrove forests are among the most threatened habitats in the world, and mangrove loss is rampant across the globe.

Thailand has lost 84 percent of its mangroves, the highest rate of mangrove loss of any nation, while the Ivory Coast, Guinea-Bissau, Tanzania, Mexico, Panama, Malaysia, Myanmar, Pakistan, and the Philippines have each lost more.

A preeminent mangrove restoration ecologist, Robin Lewis, has referred to these sites as “mangrove heart attacks” (it is worth Can mangroves minimize property loss during big storms? book about this further in Marine Pollution Bulletin, v. p.).” “This is not always the case, however. Cyclones can cause mangrove loss even when mangroves are relatively un-impacted.

Large bands of thick mangrove forests can act as a natural defense against storms, breaking high winds and waves and significantly reducing the storms' impacts on the shore.

waves can lose up to 2/3 of their original height when they hit a mangrove forest. When potentially catastrophic waves hit, mangroves can even save lives. Mangroves protect people, houses and farmland from natural disasters such as storms, typhoons, floods and tidal waves.

The trunks and branches of the mangroves act as a barrier, helping reduce the impact of waves, flooding and strong winds. Intense storm events can also have both destructive and constructive impacts on mangrove ecosystems.

The intensity of storms in a particular coastal zone is likely to be influenced by mangrove position in relation to storm track, storm characteristics (e.g., wind velocity, storm intensity radius of maximum wind) and degree of exposure (Krauss et al.

Piou et al.Zhang et al. Mangroves seem to reduce surge-related damage in the leeward side of the forest, and reduce wind and swell waves in coastal areas (McIvor et al., a, McIvor et al., b).

However it remains unclear whether mangroves can reduce wind velocity and thus wind damage from storms. The aim of this study was to shed light on this issue. Losses per cyclone for communities with 6m of mangroves per metre of coastline were double that of communities protected by 25m per m of mangroves.

In the former group, losses are somewhere between and months of economic activity. In the latter, the extra mangroves kept cyclone impacts down to between and months. Climate change is extending the range of mangroves.

The tropical trees are thriving farther north and south than ever before. Scientists say that's actually helping limit damage during. “The mangroves provide a lot of friction so they slow that flooding down,” Geselbracht said. The study only looked at storm surge reduction, but the mangroves with their thick canopy also help.

• Wide areas of mangroves can reduce tsunami heights, helping to reduce loss of life and damage to property in areas behind mangroves. • The dense roots of mangroves help to bind and build soils. The above-ground roots slow down water flows, encourage deposition of sediments and reduce erosion.

Mangrove roots can break up the force of a storm surge, soaking up some of its energy and protecting people living on coasts from cyclone damage. Yet it is a challenge to effectively value and.

Mangroves can substantially reduce the vulnerability of the adjacent coastal land from inundation and erosion. However, climate change poses a large threat to mangroves.

This paper quantifies the coastal protection provided by mangroves for 42 developing countries in the current climate, and a future climate change scenario with a one-meter sea. Narrower mangrove belts, hundreds of meters wide, will still be able to reduce wind speed, the impact of waves on top of the surge and flooding impact to some degree.

Wide areas of mangroves can reduce tsunami heights, helping to reduce loss of life and damage to property in areas behind mangroves. Mangroves can reduce storm surge water levels by slowing the flow of water and reducing surface waves. Therefore mangroves can potentially play a role in coastal defence and disaster risk reduction, either alone or alongside other risk reduction measures such as early warning systems and engineered coastal defence structures (e.g.

sea walls). Of the mangrove loss during this period, I estimate that commercial aquaculture accounted for 28% of total mangrove loss across all nations resulting in approximatelyha of mangrove forest. The protective mangrove buffer zone helps minimize damage of property and losses of life from hurricanes and storms.

In regions where these coastal fringe forests have been cleared, tremendous problems of erosion and siltation have arisen, and sometimes terrible losses to human life and property have occurred due to destructive storms.

Increasing the area of mangrove forests can lead to more drag on incoming waves and storm surges, thus reducing their effects. Mangrove forests can reduce storm surges by % (Blankespoor et al., ; Sheng and Zou, ; Zhang et al., ).

It is proven that the mangrove forest has contributed largely to reducing the loss of life and damage to property from storms and cyclones as it reduces the impact of waves, storm.

on the soil surface can also trap mineral sediment, and contribute to vertical accretion (Cahoon et al., ). Water currents during ebb tides are too low to re-entrain the sediment. Thus, the mangrove structure causes sediment accumulation (Furukawa and Wolanski, ). Storms and extreme high water events can alter the mangrove sediment.

A Riparian Mangrove Fringe (RMF) is a term used in the Mangrove Act ((7), F.S.) to classify when mangroves are exempt to trim or not.

A RMF is where mangroves growing along the shoreline of the property owner do not extend more than 50 feet waterward. First, mangroves can reduce storm surge levels by up to half a meter for each kilometer of mangrove that the storm surge passes through.

Secondly, the height of wind and swell waves is reduced by 13 to 66 per cent within the first m of mangroves. Mangrove death may result from myriad factors: salinities that are too low or high, change in nutrient availability, erosion of the substrate, freeze events, and leaf loss following hurricanes are some common examples.

Spikes in salinity are often the cause of natural die offs – this NOAA report does a nice job of discussing how salinity can. The undisturbed and natural mangrove forests or ecosystems act as seaward barrier, check the coastal erosion and minimize the tidal thrust or storm hit arising from the sea (McNae ).

The degree of protection varies with the width of mangroves. Mangrove root systems retard water flow. Shrimp farming alone caused a loss of 65, hectares of mangroves in Thailand, according to a paper by V.

Upadhyay and colleagues in the journal Current Science. In Indonesia, Java has lost 70 per cent of its mangrove area, Sulawesi 49 per cent, Sumatra 36 per cent. It is important to model and investigate the defensive effect of mangroves during tropical cyclones to reduce the damage to property and loss of lives in the future.

Numerical analysis based on configuration of vegetation, bathymetry and storm parameters can be effective for examining the storm surge attenuation by mangroves. Mangrove forests provide a U.S. coastal population of more than million people with services like protection from intense storms and waves, reduction of coastal flooding, sequestering of carbon, improved water quality, and preservation of biodiversity and fisheries.

2. Diverse opportunities from mangroves can offer sustainable income. The sustainable harvest of mangrove products for market sales can create valuable business for local communities and small-scale food producers, in particular women, indigenous peoples, family farmers, pastoralists and fishers ().

Moreover, local income opportunities can. 1. Mangroves store more carbon than terrestrial forests. Mangroves help people weather the impacts of climate change — but they also help mitigate its causes.

Globally, protecting forests can account for as much as 30 percent of the solution to climate change thanks to their ability to absorb and store carbon dioxide. Adaptation to climate change includes addressing sea-level rise (SLR) and increased storm surges in many coastal areas.

Mangroves can substantially reduce vulnerability of the adjacent coastal land from inundation but SLR poses a threat to the future of mangroves.

This paper quantifies coastal protection services of mangroves for 42 developing countries in the current climate, and a.

The aerial roots of mangroves retain sediments and prevent erosion, while the roots, trunks and canopy reduce the force of oncoming waves and storm surge and thus reduce flooding.

The Philippines has lost hundreds of thousands of hectares of mangroves in the last century, and the coastline is now at high risk from coastal hazards.A mangrove is a shrub or small tree that grows in coastal saline or brackish term is also used for tropical coastal vegetation consisting of such species.

Mangroves occur worldwide in the tropics and subtropics, mainly between latitudes 25° N and 25° total mangrove forest area of the world in wassquare kilometres (53, sq mi), spanning countries and. Mangroves’ strong roots help prevent erosion by trapping sediment in their tangled roots.

They also become incredibly important during storms: their roots can help break up wave energy and decrease storm surge. According to a recent report, every feet of mangrove forest can.