GREAT BARRIER REEF
// Outlook Report 2014
Ecological processes continued
Current summary and assessment components Assessment grade and trend Very good Predation: Decreased predator populations affect the process of predation. No species is showing strong recovery and many remain at reduced numbers or their population sizes are poorly understood. Symbiosis: Symbiotic relationships are likely to have deteriorated in the southern two-thirds of the Region, reflecting the poorer overall condition of the ecosystem. Good Poor Very poor Confidence Grade Trend
Recruitment: Recruitment is reduced for many key species such as corals, some fishes, dugongs, some marine turtles and seabirds. Reef building: Declines in coral cover in the southern two-thirds of the Region are likely to have affected the contribution of coral to the reef-building process.
Competition: There is little information about the multitude of competitive interactions. Connectivity: Marine species and habitats remain connected; although connectivity with some terrestrial habitats is disrupted. Grading statements
There are no significant changes in processes as a result of human activities.
Trend since 2009
There are some significant changes in processes as a result of human activities in some areas, but these are not to the extent that they are significantly affecting ecosystem functions.
There are substantial changes in processes as a result of human activities, and these are significantly affecting ecosystem functions in some areas.
There are substantial changes in processes across a wide area as a result of human activities, and ecosystem functions are seriously affected in much of the area.
h n i 0
Improved Stable Deteriorated No consistent trend
Adequate high-quality evidence and high level of consensus Limited evidence or limited consensus Inferred, very limited evidence
Terrestrial habitats that support the Great Barrier Reef
Outlook report 2009: Not assessed Current summary and assessment components Terrestrial habitats that support the Great Barrier Reef: Terrestrial habitats that support the Reef are generally in better condition in the northern catchment. However, habitats have been substantially modified in areas south of about Port Douglas, especially wetlands, forested floodplains, grass and sedgelands, woodlands and forests, and rainforests. Saltmarshes: Some saltmarsh areas have been modified in the catchment. Freshwater wetlands: Freshwater wetlands remain intact in many areas, but many are functioning poorly. Forested floodplains: The area of forested floodplain has been halved and much of it is grazed. Heath and shrublands: Heath and shrublands are largely intact and well protected. Grass and sedgelands: Grasslands and sedgelands have been modified extensively in central and southern catchments, especially close to the coast. Assessment grade Confidence
Not assessed Not assessed Not assessed Not assessed Not assessed