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During the 1970s, mangroves occupied as much as 200,000 km 2, encompassing approximately 75% of the world's coastlines. [24] Now, global mangrove area has experienced significant decline where at least 35% has been lost. Mangroves are continuing to diminish at a rate of 1-2% per year. [24]
[9] In 2018, the Global Mangrove Watch Initiative released a global baseline based on remote sensing and global data for 2010 (Giri et al., 2011). They estimated the total mangrove forest area of the world as of 2010 at 137,600 km 2 (53,100 sq mi), spanning 118 countries and territories.
Their loss would be ‘disastrous’, conservationists warned as a global assessment on how mangroves are faring was published. Half the world’s mangroves ‘at risk of collapse’ as climate ...
Beginning in 2010, remote sensing technologies and global data have been used to assess areas, conditions and deforestation rates of mangroves around the world. [7] [1] [2] In 2018, the Global Mangrove Watch Initiative released a new global baseline which estimates the total mangrove forest area of the world as of 2010 at 137,600 km 2 (53,100 ...
Comparing images from 2015 to 2018 around Aransas Bay with images from 2004, the agency found a net increase of 632 acres of mangrove, said Jacob Harris, a coastal ecologist on the agency’s ...
By late 2018, 16 km (9.9 mi) of brushwood barriers along the coastline had been completed. [ 124 ] A concern over reforestation is that although it supports increases in mangrove area it may actually result in a decrease in global mangrove functionality and poor restoration processes may result in longer term depletion of the mangrove resource.
The figure at the right shows projections of mangrove distributions under low (15 cm), moderate (45 cm), and severe (95 cm) sea rise scenarios by the year 2100. The IPCC Fifth Assessment Report which was finalized in 2014 is now predicting 52–98 cm sea level rise by 2100.
Clearing of the mangrove forests for development is also a significant conservation threat. [8] Approximately 4% of mangroves worldwide were estimated to be lost between 1980 and 2005. [9] Brazilian mangroves are threatened by coastal urban sprawl, and by managed aquiculture enterprises, such as shrimp farms in Salinas da Margarida. [10] [11]