Effectiveness of benthic foraminiferal and coral assemblages as water quality indicators on inshore reefs of the Great Barrier Reef, Australia

被引:71
作者
Uthicke, S. [1 ]
Thompson, A. [1 ]
Schaffelke, B. [1 ]
机构
[1] Australian Inst Marine Sci, PMB 3, Townsville, Qld 4810, Australia
关键词
Foraminifera; Hard coral; Water quality; Environmental indicator; Sediment quality; Redundancy analysis; LARGER FORAMINIFERA; SESOKO ISLAND; LONG-TERM; LIGHT; COMMUNITY; PATTERNS; BIOINDICATORS; GRADIENTS; NUTRIENTS; VARIABLES;
D O I
10.1007/s00338-009-0574-9
中图分类号
Q17 [水生生物学];
学科分类号
071004 ;
摘要
Although the debate about coral reef decline focuses on global disturbances (e.g., increasing temperatures and acidification), local stressors (nutrient runoff and overfishing) continue to affect reef health and resilience. The effectiveness of foraminiferal and hard-coral assemblages as indicators of changes in water quality was assessed on 27 inshore reefs along the Great Barrier Reef. Environmental variables (i.e., several water quality and sediment parameters) and the composition of both benthic foraminiferal and hard-coral assemblages differed significantly between four regions (Whitsunday, Burdekin, Fitzroy, and the Wet Tropics). Grain size and organic carbon and nitrogen content of sediments, and a composite water column parameter (based on turbidity and concentrations of particulate matter) explained a significant amount of variation in the data (tested by redundancy analyses) in both assemblages. Heterotrophic species of foraminifera were dominant in sediments with high organic content and in localities with low light availability, whereas symbiont-bearing mixotrophic species were dominant elsewhere. A similar suite of parameters explained 89% of the variation in the FORAM index (a Caribbean coral reef health indicator) and 61% in foraminiferal species richness. Coral richness was not related to environmental setting. Coral assemblages varied in response to environmental variables, but were strongly shaped by acute disturbances (e.g., cyclones, Acanthaster planci outbreaks, and bleaching), thus different coral assemblages may be found at sites with the same environmental conditions. Disturbances also affect foraminiferal assemblages, but they appeared to recover more rapidly than corals. Foraminiferal assemblages are effective bioindicators of turbidity/light regimes and organic enrichment of sediments on coral reefs.
引用
收藏
页码:209 / 225
页数:17
相关论文
共 66 条
[2]  
[Anonymous], 2006, R LANG ENV STAT COMP
[3]  
[Anonymous], CORAL BASED INDICATO
[4]   Enhanced particle-feeding capacity of corals on turbid reefs (Great Barrier Reef, Australia) [J].
Anthony, KRN .
CORAL REEFS, 2000, 19 (01) :59-67
[5]   Environmental limits to growth: physiological niche boundaries of corals along turbidity-light gradients [J].
Anthony, KRN ;
Connolly, SR .
OECOLOGIA, 2004, 141 (03) :373-384
[6]   Shifting roles of heterotrophy and autotrophy in coral energetics under varying turbidity [J].
Anthony, KRN ;
Fabricius, KE .
JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY, 2000, 252 (02) :221-253
[7]   LARGER FORAMINIFERS OF THE FLORIDA REEF TRACT, USA: DISTRIBUTION PATTERNS ON REEF-RUBBLE HABITATS [J].
Baker, Rebekah Duncan ;
Hallock, Pamela ;
Moses, Elizabeth F. ;
Williams, Dana E. ;
Ramirez, Alexa .
JOURNAL OF FORAMINIFERAL RESEARCH, 2009, 39 (04) :267-277
[8]   Confronting the coral reef crisis [J].
Bellwood, DR ;
Hughes, TP ;
Folke, C ;
Nystrom, M .
NATURE, 2004, 429 (6994) :827-833
[9]   A comparison of the 1998 and 2002 coral bleaching events on the Great Barrier Reef: spatial correlation, patterns, and predictions [J].
Berkelmans, R ;
De'ath, G ;
Kininmonth, S ;
Skirving, WJ .
CORAL REEFS, 2004, 23 (01) :74-83
[10]   Spatial and temporal patterns of near-surface chlorophyll a in the Great Barrier Reef lagoon [J].
Brodie, J. ;
De'ath, G. ;
Devlin, M. ;
Furnas, M. ;
Wright, M. .
MARINE AND FRESHWATER RESEARCH, 2007, 58 (04) :342-353