Pubblicazione scientifica

Optimising Land-Sea Management for Inshore Coral Reefs

FILONE TECNOLOGICO	TEMA
economia circolare e sostenibilità
produzione e cattura
trasformazione e commercializzazione

RIASSUNTO

Management authorities seldom have the capacity to comprehensively address the full suite of anthropogenic stressors, particularly in the coastal zone where numerous threats can act simultaneously to impact reefs and other ecosystems. This situation requires tools to prioritise management interventions that result in optimum ecological outcomes under a set of constraints. Here we develop one such tool, introducing a Bayesian Belief Network to model the ecological condition of inshore coral reefs in Moreton Bay (Australia) under a range of management actions. Empirical field data was used to model a suite of possible ecological responses of coral reef assemblages to five key management actions both in the sea (e.g. expansion of reserves, mangrove & seagrass restoration, fishing restrictions) and on land (e.g. lower inputs of sediment and sewage from treatment plants). Models show that expanding marine reserves (a ‘marine action’) and reducing sediment inputs from the catchments (a ‘land action’) were the most effective investments to achieve a better status of reefs in the Bay, with both having been included in >58% of scenarios with positive outcomes, and >98% of the most effective (5th percentile) scenarios. Heightened fishing restrictions, restoring habitats, and reducing nutrient discharges from wastewater treatment plants have additional, albeit smaller effects. There was no evidence that combining individual management actions would consistently produce sizeable synergistic until after maximum investment on both marine reserves (i.e. increasing reserve extent from 31 to 62% of reefs) and sediments (i.e. rehabilitating 6350 km of waterways within catchments to reduce sediment loads by 50%) were implemented. The method presented here provides a useful tool to prioritize environmental actions in situations where multiple competing management interventions exist for coral reefs and in other systems subjected to multiple stressor from the land and the sea.

DATA

Data di pubblicazione: 20/10/2016

AUTORI

GILBY BEN L
OLDS ANDREW D
CONNOLLY ROD M
STEVENS TIM
HENDERSON CHRISTOPHER J
MAXWELL PAUL S
TIBBETTS IAN R
SCHOEMAN DAVID S
RISSIK DAVID
SCHLACHER THOMAS A

ENTE DI AFFERENZA

Australian Rivers Institute—Coasts and Estuaries School of Environment Griffith University Gold Coast 4222 Queensland Australia
SCHOOL OF SCIENCE & ENG UNIV SUNSHINE COAST MAROOCHYDORE DC 4558 QUEENSLAND AUSTRALIA
SCHOOL OF CHEM ENG UNIV QUEENSLAND ST LUCIA 4072 QUEENSLAND AUSTRALIA
HEALTHY WATERWAYS LEVEL
SCHOOL OF BIOLOGICAL SCIENCES UNIV QUEENSLAND ST LUCIA 4003 QUEENSLAND 4072 AUSTRALIA
NATL CLIMATE CHANGE ADAPTATION RSCH FACILITY GRIFFITH UNIV GOLD COAST 4222 QUEENSLAND AUSTRALIA
UNIV FEDERAL DO RIO DE JANEIRO BRAZIL

RIVISTA

PLoS ONE, 11(10), e0164934

IMPACT FACTOR

2,870

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