Precision and cost-effectiveness of bioindicators to estimate nutrient regimes on coral reefs

Vaughan, E.J. and Wynn, P.M. and Wilson, S.K. and Williams, G.J. and Barker, P.A. and Graham, N.A.J. (2021) Precision and cost-effectiveness of bioindicators to estimate nutrient regimes on coral reefs. Marine Pollution Bulletin, 170. ISSN 0025-326X

Full text not available from this repository.

Abstract

Bioindicators are useful for determining nutrient regimes in marine environments, but their ability to evaluate corals reefs in different ecological states is poorly understood. The precision, availability and congruency of eight potential bioindicators (brown macroalgae, green macroalgae, turf algae, cyanobacteria, soft corals, zoanthids, sponges, and sediment) and their stable isotopic and elemental signatures (δ15N, δ13C, %N, %C, and C:N Ratio) were assessed across 21 reefs in the Inner Seychelles. The coefficient of variation (CoV) for δ15N showed that green and brown macroalgae were highly precise (2.47 ± 0.95, n = 11; 4.68 ± 1.33, n = 16, respectively), though were less common on coral-mortality reefs relative to macroalgal-dominated ones. Zoanthids were also highly precise for δ15N (2.98 ± 1.20), but were more readily available regardless of reef state (n = 18). Congruency was low among these indicators, suggesting that different physiological mechanisms for nutrient processing have a stronger influence on a bioindicator's effectiveness than reef state.

Item Type:
Journal Article
Journal or Publication Title:
Marine Pollution Bulletin
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1100/1104
Subjects:
ID Code:
168092
Deposited By:
Deposited On:
28 Mar 2022 13:10
Refereed?:
Yes
Published?:
Published
Last Modified:
04 May 2022 02:09