Effects of herbivore exclusion and nutrient enrichment on coral reef macroalgae and cyanobacteria

Coral Reefs ◽  
2001 ◽  
Vol 19 (4) ◽  
pp. 318-329 ◽  
Author(s):  
R. Thacker ◽  
D. Ginsburg ◽  
V. Paul
Keyword(s):  
Coral Reef ◽  
Nutrient Enrichment ◽  
Herbivore Exclusion

scholarly journals Seasonal regulation of herbivory and nutrient effects on macroalgal recruitment and succession in a Florida coral reef

PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e2643 ◽  
Author(s):  
Alain Duran ◽  
Ligia Collado-Vides ◽  
Deron E. Burkepile
Keyword(s):  
Species Richness ◽  
Coral Reef ◽  
Nutrient Availability ◽  
Nutrient Enrichment ◽  
Community Dynamics ◽  
Species Abundance ◽  
Warm Season ◽  
Winter Mortality ◽  
Exclusion Experiment ◽  
Herbivore Exclusion

Herbivory and nutrient enrichment are drivers of benthic dynamics of coral reef macroalgae; however, their impact may vary seasonally. In this study we evaluated the effects of herbivore pressure, nutrient availability and potential propagule supply on seasonal recruitment and succession of macroalgal communities on a Florida coral reef. Recruitment tiles, replaced every three months, and succession tiles, kept in the field for nine months, were established in an ongoing factorial nutrient enrichment-herbivore exclusion experiment. The ongoing experiment had already created very different algal communities across the different herbivory and nutrient treatments. We tracked algal recruitment, species richness, and species abundance through time. Our results show seasonal variation in the effect of herbivory and nutrient availability on recruitment of coral reef macroalgae. In the spring, when there was higher macroalgal species richness and abundance of recruits, herbivory appeared to have more control on macroalgal community structure than did nutrients. In contrast, there was no effect of either herbivory or nutrient enrichment on macroalgal communities on recruitment tiles in cooler seasons. The abundance of recruits on tiles was positively correlated with the abundance of algal in the ongoing, established experiment, suggesting that propagule abundance is likely a strong influence on algal recruitment and early succession. Results of the present study suggest that abundant herbivorous fishes control recruitment and succession of macroalgae, particularly in the warm season when macroalgal growth is higher. However, herbivory appears less impactful on algal recruitment and community dynamics in cooler seasons. Ultimately, our data suggest that the timing of coral mortality (e.g., summer vs. winter mortality) and freeing of benthic space may strongly influence the dynamics of algae that colonize open space.

Potential impacts of anthropogenic nutrient enrichment on coral reefs in the South China Sea: evidence from nutrient and chlorophyll a levels in seawater

2019 ◽  
Vol 21 (10) ◽  
pp. 1745-1753
Author(s):  
Jing Guo ◽  
Kefu Yu ◽  
Yinghui Wang ◽  
Ruijie Zhang ◽  
Xueyong Huang ◽  
...  
Keyword(s):  
Coral Reef ◽  
South China Sea ◽  
Coral Reefs ◽  
Chlorophyll A ◽  
South China ◽  
Nutrient Enrichment ◽  
The South China Sea ◽  
Macroalgal Blooms ◽  
Reef Degradation ◽  
Coral Reef Degradation

Anthropogenic nutrient enrichment caused macroalgal blooms and further resulted in coral reef degradation in coastal and some remote reef areas of the SCS.

scholarly journals The effects of herbivore exclusion and nutrient enrichment on growth and reproduction of Halimeda macroloba

ScienceAsia ◽  
2012 ◽  
Vol 38 (3) ◽  
pp. 227 ◽  
Author(s):  
Jaruwan Mayakun ◽  
Jeong Ha Kim ◽  
Brian E. Lapointe ◽  
Anchana Prathep
Keyword(s):  
Nutrient Enrichment ◽  
Herbivore Exclusion ◽  
Growth And Reproduction

scholarly journals Kondisi Terumbu Karang Di Kepulauan Seribu Dalam Kaitan Dengan Gradasi Kualitas Perairan

2019 ◽  
Vol 1 (1) ◽  
pp. 93
Author(s):  
Ruswahyuni, Pujiono Wahyu Purnomo
Keyword(s):  
Coral Reef ◽  
Species Composition ◽  
Nutrient Enrichment ◽  
Coral Species ◽  
High Growth ◽  
Coral Reef Ecosystem ◽  
Functional Aspects ◽  
Zooxanthellae Density ◽  
Reef Condition ◽  
Reef Ecosystem

Abstract The increasing of Jakarta land activies caused eutrophication, so that it changes species composition and decreasing of number of species. The sea within the high of eutrophication has correlation with the high growth of alga, depletion of oxygen and change of coral species composition. These researchs was done at coral reef ecosystem of Lancang Island, Pari Island and Payung Island, whereas there are part of Seribu Island Cluster. The aims of research was evaluating of nutrient enrichment effect to morphology and functional of coral reef condition. Morphology figures are showed by basic cover, whereas functional aspects are evaluated by zooxanthellae density. The results are showed that the high eutrophication is significantly correlated with main land of Java Island distance. The increasing of nutrient enrichment is significantly to change profile of coral reef and zooxanthellae densities.

scholarly journals Spatial co‐variation in nutrient enrichment and fishing of herbivores in an oceanic coral reef ecosystem

2021 ◽  
Author(s):  
Sally J. Holbrook ◽  
Jean Wencélius ◽  
Alexandra K. Dubel ◽  
Thomas C. Adam ◽  
Dana C. Cook ◽  
...  
Keyword(s):  
Coral Reef ◽  
Nutrient Enrichment ◽  
Coral Reef Ecosystem ◽  
Reef Ecosystem

scholarly journals Landscape‐scale patterns of nutrient enrichment in a coral reef ecosystem: implications for coral to algae phase shifts

2020 ◽  
Author(s):  
Thomas C. Adam ◽  
Deron E. Burkepile ◽  
Sally J. Holbrook ◽  
Robert C. Carpenter ◽  
Joachim Claudet ◽  
...  
Keyword(s):  
Coral Reef ◽  
Nutrient Enrichment ◽  
Phase Shifts ◽  
Landscape Scale ◽  
Coral Reef Ecosystem ◽  
Reef Ecosystem
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