Upstream solutions to coral reef conservation: The payoffs of smart and cooperative decision-making

JOURNAL OF ENVIRONMENTAL MANAGEMENT

卷:191

Article

Oleson, Kirsten L. L.¹  Falinski, Kim A.¹  Lecky, Joey¹  Rowe, Clara²  Kappel, Carrie V.³  Selkoe, Kimberly A.^3,4  White, Crow⁵ 

[1] Univ Hawaii, Dept Nat Resources & Environm Management, 1910 East West Rd, Honolulu, HI 96822 USA

[2] Yale Sch Forestry & Environm Studies, 195 Prospect St, New Haven, CT 06511 USA

[3] Natl Ctr Ecol Anal & Synth, 735 State St, Santa Barbara, CA 93101 USA

[4] Univ Hawaii, Hawaii Inst Marine Biol, Kaneohe, HI 96744 USA

[5] Calif Polytech State Univ San Luis Obispo, Dept Biol Sci, San Luis Obispo, CA 93407 USA

关键词: Sediment;    Roads;    Trade-off analysis;    Cost-effectiveness;    Cooperation;    Coral reef;    Resource management;    Watershed;    Land-sea interface;    Soil erosion;   

DOI  :  10.1016/j.jenvman.2016.12.067

来源: Elsevier

【 摘 要 】

Land-based source pollutants (LBSP) actively threaten coral reef ecosystems globally. To achieve the greatest conservation outcome at the lowest cost, managers could benefit from appropriate tools that evaluate the benefits (in terms of LBSP reduction) and costs of implementing alternative land management strategies. Here we use a spatially explicit predictive model (InVEST-SDR) that quantifies change in sediment reaching the coast for evaluating the costs and benefits of alternative threat-abatement scenarios. We specifically use the model to examine trade-offs among possible agricultural road repair management actions (water bars to divert runoff and gravel to protect the road surface) across the landscape in West Maui, Hawaii, USA. We investigated changes in sediment delivery to coasts and costs incurred from management decision-making that is (1) cooperative or independent among landowners, and focused on (2) minimizing costs, reducing sediment, or both. The results illuminate which management scenarios most effectively minimize sediment while also minimizing the cost of mitigation efforts. We find targeting specific hotspots within all individual parcels is more cost-effective than targeting all road segments. The best outcomes are achieved when landowners cooperate and target cost-effective road repairs, however, a cooperative strategy can be counter-productive in some instances when cost-effectiveness is ignored. Simple models, such as the one developed here, have the potential to help managers make better choices about how to use limited resources. (C) 2017 The Authors. Published by Elsevier Ltd.

【 授权许可】

Free