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  • Author Secretariat of the Pacific Regional Environment Programme (SPREP)
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Cost-benefit analysis of managing the invasive African tulip tree (Spathodea campanulata) in the Pacific
Available Online

Brown, P.

,

Daigneault, A.

2014
Invasive alien species such as Spathodea campanulata (African tulip tree) threaten biodiversity in the Pacific islands as well as the economic, social, and cultural wellbeing of Pacific peoples. Despite the potential magnitude of these threats, our scientific understanding of the ecology and management of the African tulip tree is nascent. In this paper, we use data from novel surveys of households and communities to document the direct and direct impacts of African tulip tree in Fiji, focusing on those impacts which may be monetised. We use the same data to describe current management approaches and then describe a state-of-the-science, ‘‘integrated’’ management approach that employs different strategies for trees of different ages and sizes. These two approaches are then compared in a comprehensive cost–benefit analysis. We find strong arguments for pursuing the integrated management approach, which derives monetised benefits of $3.7 for each $1 spent. However, the less costly current approach is also strictly preferred to the baseline, ‘‘do nothing’’ approach, with monetised benefits of $2.7 for each $1 spent. Results of this analysis clearly show that managing African tulip tree is cost effective, even without explicitly considering biodiversity, culture, and other non-monetised benefits of control.
Marine Debris Pollution in the Pacific : Literature review
Climate Change Resilience, Biodiversity Conservation, Waste Management and Pollution Control, BRB
Available Online

Secretariat of the Pacific Regional Environment Programme (SPREP)

2014
Rapidly expanding human populations and associated economic growth and overconsumption is resulting in serious degradation of the natural environment human survival depends on (Vitousek et al., 1997; Sanderson et al., 2002; Orr, 2004; Alroy, 2010; Branch et al., 2013). Almost half of the global human population currently lives within 150km of the coast (UN Atlas of the Oceans, 2014). This results in severe pressures being placed on marine and coastal environments. Anthropogenic impacts on oceans include physical alterations of the coasts and seafloor, as well as chemical and biological contamination through sewage, industrial wastes and agricultural discharges, dredging, desalination, shipping, and fossil fuel and ore extraction. These pressures, together with overfishing, by-catch, destructive fishing methods (e.g. blast fishing), introduction of invasive species, boat strikes, acoustic pollution, climate-related changes (i.e. ocean acidification, sea level rise, freshwater inundations, cyclones) can cause structural changes in marine communities and the loss of genetic variability and other side-effects of human interference with exceptionally complex ocean ecosystems (Gray et al., 1979; Goldberg, 1995; Vitousek et al. 1997; Islam and Tanaka, 2004; Pauly et al., 2005; Panigada et al., 2006; Crain et al., 2008; Halpern et al., 2008; Ramirez-Llodra et al., 2011)