Valuing carbon stocks across a tropical lagoon after accounting for black and inorganic carbon: bulk density proxies for monitoring

Total organic carbon (TOC) stocks of seagrass and mangroves across a Southeast Asian lagoon were measured and valued after correcting for black carbon (BC) and calcareous carbon equivalents (PICequiv) in mitigating CO2 emissions, along with sediment dry bulk densities (DBDs), as a cost-effective means of estimating carbon stock concepts. Overall, seagrass and mangrove TOC densities ranged from 15.3 ± 4.3 and 124.3 ± 21.1 Mg C ha–1, respectively, across the lower lagoon and 175.2 ± 46.9 and 103.2 ± 19.0 Mg C ha–1 for seagrass and 355.0 ± 24.8 and 350.3 ± 35.2 Mg C ha–1 for mangroves across the two upper lagoon branches. Only mangrove biomass made significant additional contributions, ranging from 178.5 ± 62.3 to 120.7 ± 94.8 Mg C ha–1 for lower and upper regions, respectively. The difference between the lagoon's seagrass and mangrove TOC total stock (5.98 ± 0.69 and 390 ± 33.22 Gg C, respectively) was further amplified by the larger mangrove area. When corrected for BC and PICequiv, the carbon stock mitigation service was reduced by a moderate 14.2%. Across the lagoon the sedimentary DBD showed strong (R2 = 0.85, p < 0.001) to moderate (R2 = 0.67, p < 0.001) linear correlations with seagrass and mangrove [TOC], respectively and moderate correlations with seagrass [PIC] (R2 = 0.6, p < 0.001). There was an invariant and relatively constant response to mangrove [PIC] (2.7 ± 0.07 kg m–3). Valuations were worth on average US$0.44 million y–1 over 20 years, and less than the total income of the indigenous custodians (US$1.8 and US$7.4 million y–1)

Latin America 2060: consolidation or crisis?

This repository item contains a single issue of the Pardee Center Task Force Reports, a publication series that began publishing in 2009 by the Boston University Frederick S. Pardee Center for the Study of the Longer-Range Future.Latin America has produced vigorous ideas throughout its history, expressed in narratives about its struggles and successes, or its weaknesses and failures. Together, these have shaped a multi-faceted vision of the region and its peoples. Some of its expositors, finding the story to be neither complete nor precise, work toward reformulations, some quite radical. Such generation of knowledge in different fields seems destined to yield a variety of distinct outcomes, at least in part because some of the emerging social and cultural movements are not yet very well structured. This Task Force Report project seeks to harness ideas about the region’s future into a coherent and policy useful discourse. A Workshop and a Task Force meeting was held at Boston University on November 18-19, 2010. A select group of invited experts – a mix of academic scholars and practitioners – were asked to turn their ideas into short ‘Think Pieces’ essays. Each Think Piece focuses on a specific topical issue for the region as a whole, instead of looking only at particular countries. These Think Piece essays are compiled and edited by the Task Force coordinator and published by the Pardee Center as a Task Force Report

An ecological study of the effects of power plants on benthic macroplant microcosms in subtropical and tropical estuaries.

"August, 1977."Includes index.Mode of access: Internet