Effect of nitrogen, phosphorous, and their interaction on coral reef algal succession in Glover's Reef, Belize
Nitrogen and phosphorous fertilizers were used to determine their short-term summer effects on algal colonization, abundance, and species composition in moderate herbivory treatments. Secondary succession of algae on coral skeletons was examined in four treatments: an untreated control, a pure phosphate fertilizer, a pure nitrogen fertilizer, and an equal mix of the two fertilizers. Turf algae cover was the only measure of algae abundance to respond significantly to fertilization. Turf cover was three times higher in treatments with added nitrogen when compared with the pure phosphorus treatment. These turfs were dominated by green and cyanobacteria taxa, namely Enteromorpha prolifera, Lyngbya confervoides, and two species of Cladophora. The phosphate treatment was dominated by encrusting corallines and the cyanobacteria L. confervoides, while the controls had the highest cover of frondose brown algae, namely Padina sanctae-crucis and two species of Dictyota. Results indicate that turf algae were co-limited by nitrogen and phosphorus but enrichment appeared to inhibit brown frondose algae that currently dominate these reefs. Number of species was lowest on the pure phosphorus and nitrogen treatments, highest in the controls and intermediate in the mixed treatments, which suggests that diversity is reduced most by an imbalanced nutrient ratio.
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Subjects: | Algas, Sucesión ecológica, Eutrofización, Arrecifes de coral, Contaminación marina, Artfrosur, |
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KOHA-OAI-ECOSUR:447162023-06-21T11:26:32ZEffect of nitrogen, phosphorous, and their interaction on coral reef algal succession in Glover's Reef, Belize McClanahan, T. R. autor/a Carreiro Silva, M. autor/a DiLorenzo, M. autor/a textengNitrogen and phosphorous fertilizers were used to determine their short-term summer effects on algal colonization, abundance, and species composition in moderate herbivory treatments. Secondary succession of algae on coral skeletons was examined in four treatments: an untreated control, a pure phosphate fertilizer, a pure nitrogen fertilizer, and an equal mix of the two fertilizers. Turf algae cover was the only measure of algae abundance to respond significantly to fertilization. Turf cover was three times higher in treatments with added nitrogen when compared with the pure phosphorus treatment. These turfs were dominated by green and cyanobacteria taxa, namely Enteromorpha prolifera, Lyngbya confervoides, and two species of Cladophora. The phosphate treatment was dominated by encrusting corallines and the cyanobacteria L. confervoides, while the controls had the highest cover of frondose brown algae, namely Padina sanctae-crucis and two species of Dictyota. Results indicate that turf algae were co-limited by nitrogen and phosphorus but enrichment appeared to inhibit brown frondose algae that currently dominate these reefs. Number of species was lowest on the pure phosphorus and nitrogen treatments, highest in the controls and intermediate in the mixed treatments, which suggests that diversity is reduced most by an imbalanced nutrient ratio.Nitrogen and phosphorous fertilizers were used to determine their short-term summer effects on algal colonization, abundance, and species composition in moderate herbivory treatments. Secondary succession of algae on coral skeletons was examined in four treatments: an untreated control, a pure phosphate fertilizer, a pure nitrogen fertilizer, and an equal mix of the two fertilizers. Turf algae cover was the only measure of algae abundance to respond significantly to fertilization. Turf cover was three times higher in treatments with added nitrogen when compared with the pure phosphorus treatment. These turfs were dominated by green and cyanobacteria taxa, namely Enteromorpha prolifera, Lyngbya confervoides, and two species of Cladophora. The phosphate treatment was dominated by encrusting corallines and the cyanobacteria L. confervoides, while the controls had the highest cover of frondose brown algae, namely Padina sanctae-crucis and two species of Dictyota. Results indicate that turf algae were co-limited by nitrogen and phosphorus but enrichment appeared to inhibit brown frondose algae that currently dominate these reefs. Number of species was lowest on the pure phosphorus and nitrogen treatments, highest in the controls and intermediate in the mixed treatments, which suggests that diversity is reduced most by an imbalanced nutrient ratio.AlgasSucesión ecológicaEutrofizaciónArrecifes de coralContaminación marinaArtfrosurMarine pollution bulletin |
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Algas Sucesión ecológica Eutrofización Arrecifes de coral Contaminación marina Artfrosur Algas Sucesión ecológica Eutrofización Arrecifes de coral Contaminación marina Artfrosur |
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Algas Sucesión ecológica Eutrofización Arrecifes de coral Contaminación marina Artfrosur Algas Sucesión ecológica Eutrofización Arrecifes de coral Contaminación marina Artfrosur McClanahan, T. R. autor/a Carreiro Silva, M. autor/a DiLorenzo, M. autor/a Effect of nitrogen, phosphorous, and their interaction on coral reef algal succession in Glover's Reef, Belize |
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Nitrogen and phosphorous fertilizers were used to determine their short-term summer effects on algal colonization, abundance, and species composition in moderate herbivory treatments. Secondary succession of algae on coral skeletons was examined in four treatments: an untreated control, a pure phosphate fertilizer, a pure nitrogen fertilizer, and an equal mix of the two fertilizers. Turf algae cover was the only measure of algae abundance to respond significantly to fertilization. Turf cover was three times higher in treatments with added nitrogen when compared with the pure phosphorus treatment. These turfs were dominated by green and cyanobacteria taxa, namely Enteromorpha prolifera, Lyngbya confervoides, and two species of Cladophora. The phosphate treatment was dominated by encrusting corallines and the cyanobacteria L. confervoides, while the controls had the highest cover of frondose brown algae, namely Padina sanctae-crucis and two species of Dictyota. Results indicate that turf algae were co-limited by nitrogen and phosphorus but enrichment appeared to inhibit brown frondose algae that currently dominate these reefs. Number of species was lowest on the pure phosphorus and nitrogen treatments, highest in the controls and intermediate in the mixed treatments, which suggests that diversity is reduced most by an imbalanced nutrient ratio. |
format |
Texto |
topic_facet |
Algas Sucesión ecológica Eutrofización Arrecifes de coral Contaminación marina Artfrosur |
author |
McClanahan, T. R. autor/a Carreiro Silva, M. autor/a DiLorenzo, M. autor/a |
author_facet |
McClanahan, T. R. autor/a Carreiro Silva, M. autor/a DiLorenzo, M. autor/a |
author_sort |
McClanahan, T. R. autor/a |
title |
Effect of nitrogen, phosphorous, and their interaction on coral reef algal succession in Glover's Reef, Belize |
title_short |
Effect of nitrogen, phosphorous, and their interaction on coral reef algal succession in Glover's Reef, Belize |
title_full |
Effect of nitrogen, phosphorous, and their interaction on coral reef algal succession in Glover's Reef, Belize |
title_fullStr |
Effect of nitrogen, phosphorous, and their interaction on coral reef algal succession in Glover's Reef, Belize |
title_full_unstemmed |
Effect of nitrogen, phosphorous, and their interaction on coral reef algal succession in Glover's Reef, Belize |
title_sort |
effect of nitrogen, phosphorous, and their interaction on coral reef algal succession in glover's reef, belize |
work_keys_str_mv |
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