The Gordian knot of mangrove conservation: Disentangling the role of scale, services and benefits

The Gordian knot of mangrove conservation: Disentangling the role of scale, services and benefits

Primary Country: multiple
Ecosystem: mangrove
Sample Value Estimates:
(a) In the Segara Anakan lagoon in Indonesia, fishing of juveniles decreases the maximum yield that could be realized from the shrimp fishery in general. This has led to conflicts between lagoon fishers and regional fishers operating in the ocean. As part of a possible solution, it was suggested to ban apong nets, but due to severe resistance by the lagoon’s fishers, this has never been implemented (b) In the Braganca area of North Brazil, the by-catch of juveniles in the fish traps causes a direct economic loss for offshore fishers. It also leads reduces overall economic revenue, as the fish sold from the traps is much smaller than the offshore captured species, and thus less valuable. In both case studies, the benefits are realized both inside the area where the ecosystem service is provided, and outside of it; and also, the realization of benefits in the mangrove system reduces the benefits that can be realized in the ocean. These mutually exclusive benefits occur at two different spatial levels – local and regional – but the de facto - informal - management decisions are only made at the local level through the fishing of juveniles inside the lagoon. (c) Scale mismatches become even more evident when there are multiple ecosystem services. Mangroves deliver a number of multiple and often conflicting ecosystem services. This is especially relevant for the case of wood provision, sediment fixation, and carbon sequestration.
Region: multiple

Publication information

Máñez, K.S. G. KrauseI. RingM. Glaser “The Gordian knot of mangrove conservation: Disentangling the role of scale, services and benefits” Global Environmental Change 28: 120-128, 2014

Addtional Notes

 

The authors' approach allows finding possible solutions by: (a)  

identifying the most important interactions between levels (b) illustrating current 'problems of fit' and (c) developing mechanisms for benefit sharing and compensation mechanisms between different user groups. On this basis, adequate policy mechanisms and related institutional bodies can be developed. 

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