Interaction between nutrients and herbivory in controlling algal communities and coral condition on Glover's Reef, Belize

T. R. McClanahan, E. Sala, P. A. Stickels, B. A. Cokos, Andrew C Baker, C. J. Starger, S. H. Jones IV

Research output: Contribution to journalArticle

91 Citations (Scopus)

Abstract

We studied the effects of herbivory, fertilization and their interaction on algal succession on dead coral surfaces and the condition of live coral colonies. We used replicate open, closed, fertilized, and unfertilized cages in a 2-factor, 2-level design, sampled 7 times over a 49 d summer period at an offshore reef atoll lagoon in Belize. Herbivory negatively influenced algal biomass, whereas nutrients positively influenced wet but not dry or decalcified measures. Total and turf algal cover were positively influenced by nutrients and negatively by herbivory. Biomass was more strongly influenced by herbivory than fertilization, and the opposite was true for cover. Brown frondose algal cover was negatively influenced by both herbivory and nutrients, whereas red frondose algal cover was negatively affected by herbivory but unaffected by nutrients. There were more algal taxa and higher dominance in low compared to high herbivory treatments. In contrast to the relative dominance model (RDM), we found that turf algae did best under conditions of low herbivory and high nutrients, and also dominated high herbivory and low nutrient conditions, whereas frondose brown algae did best under low herbivory and low nutrient conditions, and appeared to be inhibited by high nutrients. Stony corals did sufficiently well in all conditions such that it was not possible to determine their optimal conditions, but elevated nutrients may provide resistance to end-of-summer bleaching by increasing the standing densities of algal symbionts. There were no detectable changes in symbiont community composition with all symbionts being members of Symbiodinium clade A. Coral mortality and low herbivory are most likely to be responsible for the high levels of brown frondose algae reported on these patch reefs.

Original languageEnglish
Pages (from-to)135-147
Number of pages13
JournalMarine Ecology Progress Series
Volume261
StatePublished - Oct 17 2003
Externally publishedYes

Fingerprint

Belize
algal community
herbivory
corals
reefs
coral
reef
herbivores
nutrient
nutrients
symbiont
symbionts
Phaeophyceae
brown alga
lawns and turf
algae
Symbiodinium
atoll
summer
biomass

Keywords

  • Algae
  • Bleaching
  • Coral
  • Crustose coralline algae
  • Eutrophication
  • Frondose algae
  • Herbivory
  • Reef
  • Relative dominance model
  • Symbiodinium
  • Symbiosis

ASJC Scopus subject areas

  • Aquatic Science
  • Ecology

Cite this

McClanahan, T. R., Sala, E., Stickels, P. A., Cokos, B. A., Baker, A. C., Starger, C. J., & Jones IV, S. H. (2003). Interaction between nutrients and herbivory in controlling algal communities and coral condition on Glover's Reef, Belize. Marine Ecology Progress Series, 261, 135-147.

Interaction between nutrients and herbivory in controlling algal communities and coral condition on Glover's Reef, Belize. / McClanahan, T. R.; Sala, E.; Stickels, P. A.; Cokos, B. A.; Baker, Andrew C; Starger, C. J.; Jones IV, S. H.

In: Marine Ecology Progress Series, Vol. 261, 17.10.2003, p. 135-147.

Research output: Contribution to journalArticle

McClanahan, TR, Sala, E, Stickels, PA, Cokos, BA, Baker, AC, Starger, CJ & Jones IV, SH 2003, 'Interaction between nutrients and herbivory in controlling algal communities and coral condition on Glover's Reef, Belize', Marine Ecology Progress Series, vol. 261, pp. 135-147.
McClanahan, T. R. ; Sala, E. ; Stickels, P. A. ; Cokos, B. A. ; Baker, Andrew C ; Starger, C. J. ; Jones IV, S. H. / Interaction between nutrients and herbivory in controlling algal communities and coral condition on Glover's Reef, Belize. In: Marine Ecology Progress Series. 2003 ; Vol. 261. pp. 135-147.
@article{31e481749bfd4d2a90be98d78982d410,
title = "Interaction between nutrients and herbivory in controlling algal communities and coral condition on Glover's Reef, Belize",
abstract = "We studied the effects of herbivory, fertilization and their interaction on algal succession on dead coral surfaces and the condition of live coral colonies. We used replicate open, closed, fertilized, and unfertilized cages in a 2-factor, 2-level design, sampled 7 times over a 49 d summer period at an offshore reef atoll lagoon in Belize. Herbivory negatively influenced algal biomass, whereas nutrients positively influenced wet but not dry or decalcified measures. Total and turf algal cover were positively influenced by nutrients and negatively by herbivory. Biomass was more strongly influenced by herbivory than fertilization, and the opposite was true for cover. Brown frondose algal cover was negatively influenced by both herbivory and nutrients, whereas red frondose algal cover was negatively affected by herbivory but unaffected by nutrients. There were more algal taxa and higher dominance in low compared to high herbivory treatments. In contrast to the relative dominance model (RDM), we found that turf algae did best under conditions of low herbivory and high nutrients, and also dominated high herbivory and low nutrient conditions, whereas frondose brown algae did best under low herbivory and low nutrient conditions, and appeared to be inhibited by high nutrients. Stony corals did sufficiently well in all conditions such that it was not possible to determine their optimal conditions, but elevated nutrients may provide resistance to end-of-summer bleaching by increasing the standing densities of algal symbionts. There were no detectable changes in symbiont community composition with all symbionts being members of Symbiodinium clade A. Coral mortality and low herbivory are most likely to be responsible for the high levels of brown frondose algae reported on these patch reefs.",
keywords = "Algae, Bleaching, Coral, Crustose coralline algae, Eutrophication, Frondose algae, Herbivory, Reef, Relative dominance model, Symbiodinium, Symbiosis",
author = "McClanahan, {T. R.} and E. Sala and Stickels, {P. A.} and Cokos, {B. A.} and Baker, {Andrew C} and Starger, {C. J.} and {Jones IV}, {S. H.}",
year = "2003",
month = "10",
day = "17",
language = "English",
volume = "261",
pages = "135--147",
journal = "Marine Ecology - Progress Series",
issn = "0171-8630",
publisher = "Inter-Research",

}

TY - JOUR

T1 - Interaction between nutrients and herbivory in controlling algal communities and coral condition on Glover's Reef, Belize

AU - McClanahan, T. R.

AU - Sala, E.

AU - Stickels, P. A.

AU - Cokos, B. A.

AU - Baker, Andrew C

AU - Starger, C. J.

AU - Jones IV, S. H.

PY - 2003/10/17

Y1 - 2003/10/17

N2 - We studied the effects of herbivory, fertilization and their interaction on algal succession on dead coral surfaces and the condition of live coral colonies. We used replicate open, closed, fertilized, and unfertilized cages in a 2-factor, 2-level design, sampled 7 times over a 49 d summer period at an offshore reef atoll lagoon in Belize. Herbivory negatively influenced algal biomass, whereas nutrients positively influenced wet but not dry or decalcified measures. Total and turf algal cover were positively influenced by nutrients and negatively by herbivory. Biomass was more strongly influenced by herbivory than fertilization, and the opposite was true for cover. Brown frondose algal cover was negatively influenced by both herbivory and nutrients, whereas red frondose algal cover was negatively affected by herbivory but unaffected by nutrients. There were more algal taxa and higher dominance in low compared to high herbivory treatments. In contrast to the relative dominance model (RDM), we found that turf algae did best under conditions of low herbivory and high nutrients, and also dominated high herbivory and low nutrient conditions, whereas frondose brown algae did best under low herbivory and low nutrient conditions, and appeared to be inhibited by high nutrients. Stony corals did sufficiently well in all conditions such that it was not possible to determine their optimal conditions, but elevated nutrients may provide resistance to end-of-summer bleaching by increasing the standing densities of algal symbionts. There were no detectable changes in symbiont community composition with all symbionts being members of Symbiodinium clade A. Coral mortality and low herbivory are most likely to be responsible for the high levels of brown frondose algae reported on these patch reefs.

AB - We studied the effects of herbivory, fertilization and their interaction on algal succession on dead coral surfaces and the condition of live coral colonies. We used replicate open, closed, fertilized, and unfertilized cages in a 2-factor, 2-level design, sampled 7 times over a 49 d summer period at an offshore reef atoll lagoon in Belize. Herbivory negatively influenced algal biomass, whereas nutrients positively influenced wet but not dry or decalcified measures. Total and turf algal cover were positively influenced by nutrients and negatively by herbivory. Biomass was more strongly influenced by herbivory than fertilization, and the opposite was true for cover. Brown frondose algal cover was negatively influenced by both herbivory and nutrients, whereas red frondose algal cover was negatively affected by herbivory but unaffected by nutrients. There were more algal taxa and higher dominance in low compared to high herbivory treatments. In contrast to the relative dominance model (RDM), we found that turf algae did best under conditions of low herbivory and high nutrients, and also dominated high herbivory and low nutrient conditions, whereas frondose brown algae did best under low herbivory and low nutrient conditions, and appeared to be inhibited by high nutrients. Stony corals did sufficiently well in all conditions such that it was not possible to determine their optimal conditions, but elevated nutrients may provide resistance to end-of-summer bleaching by increasing the standing densities of algal symbionts. There were no detectable changes in symbiont community composition with all symbionts being members of Symbiodinium clade A. Coral mortality and low herbivory are most likely to be responsible for the high levels of brown frondose algae reported on these patch reefs.

KW - Algae

KW - Bleaching

KW - Coral

KW - Crustose coralline algae

KW - Eutrophication

KW - Frondose algae

KW - Herbivory

KW - Reef

KW - Relative dominance model

KW - Symbiodinium

KW - Symbiosis

UR - http://www.scopus.com/inward/record.url?scp=0242540502&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0242540502&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0242540502

VL - 261

SP - 135

EP - 147

JO - Marine Ecology - Progress Series

JF - Marine Ecology - Progress Series

SN - 0171-8630

ER -