Policy and guidelines : aquatic habitat management and fish conservation (1999 Update)

... Proposals that significantly damage marine vegetation are not approved in the absence of effective compensation or offset measures. The Fisheries NSW policy and guidelines offset provisions require a 'no net loss' habitat policy in which habitat compensation is calculated on a minimum 2:1 basis for key fish habitat (NSW, 2013). Further, organizations such as Reducing Emissions from Deforestation and Forest Degradation (REDD+) and the United Nations Framework Convention on Climate Change play an important role in providing funding to communities for stewardship of these areas (Hutchison et al., 2014;Jardine and Siikamäki, 2014;Skidmore et al., 2014). ...
Coastal vegetation (seagrass, mangrove and saltmarsh) termed “blue carbon” systems have recently been noted for their potentially large carbon storage capacities. This study quantifies sedimentary blue carbon stocks in an urban estuary containing seagrass (Zostera muelleri), mangrove (Avicennia marina), and saltmarsh (Sporobolus virginicus) habitats in the Coffs Creek Estuary (NSW, Australia). The objective of this study is to investigate the carbon storage dynamics, including the evaluation of potential influences from the plant cover and geomorphology. The sediment carbon stock results presented in this work show that mangroves store more carbon, 1070 827 compared to 858 190 and 365 255 Mg ha than saltmarsh and seagrass, respectively. These results are of interest because in Coffs Creek alone, mangroves have expanded (in area) by more than 25% from 1986 to 2011. The large sediment carbon stocks found in this urban system emphasise the benefits of restoring and protecting these ecosystems as a way of offsetting atmospheric carbon dioxide (CO ) emissions.
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