The Ecological Role of Sharks on Coral Reefs: Response to Roff et al .

2016 ◽  
Vol 31 (8) ◽  
pp. 586-587 ◽  
Author(s):  
Jonathan L.W. Ruppert ◽  
Marie-Josée Fortin ◽  
Mark G. Meekan
Keyword(s):  
Coral Reefs ◽  
Ecological Role

scholarly journals Distribution and Diversity of Archaeal Ammonia Monooxygenase Genes Associated with Corals

2007 ◽  
Vol 73 (17) ◽  
pp. 5642-5647 ◽  
Author(s):  
J.Michael Beman ◽  
Kathryn J. Roberts ◽  
Linda Wegley ◽  
Forest Rohwer ◽  
Christopher A. Francis
Keyword(s):  
Coral Reefs ◽  
Microbial Communities ◽  
Coral Species ◽  
Estuarine Sediments ◽  
Ammonia Monooxygenase ◽  
Oceanic Water ◽  
Ecological Role ◽  
Bocas Del Toro ◽  
Water Columns

ABSTRACT Corals are known to harbor diverse microbial communities of Bacteria and Archaea, yet the ecological role of these microorganisms remains largely unknown. Here we report putative ammonia monooxygenase subunit A (amoA) genes of archaeal origin associated with corals. Multiple DNA samples drawn from nine coral species and four different reef locations were PCR screened for archaeal and bacterial amoA genes, and archaeal amoA gene sequences were obtained from five different species of coral collected in Bocas del Toro, Panama. The 210 coral-associated archaeal amoA sequences recovered in this study were broadly distributed phylogenetically, with most only distantly related to previously reported sequences from coastal/estuarine sediments and oceanic water columns. In contrast, the bacterial amoA gene could not be amplified from any of these samples. These results offer further evidence for the widespread presence of the archaeal amoA gene in marine ecosystems, including coral reefs.

The Ecological Role of Sharks on Coral Reefs

2016 ◽  
Vol 31 (5) ◽  
pp. 395-407 ◽  
Author(s):  
George Roff ◽  
Christopher Doropoulos ◽  
Alice Rogers ◽  
Yves-Marie Bozec ◽  
Nils C. Krueck ◽  
...  
Keyword(s):  
Coral Reefs ◽  
Ecological Role

Ecological Role of Exopolysaccharides of Bacillariophyta: A Review

2017 ◽  
Vol 19 (1) ◽  
pp. 5-24 ◽  
Author(s):  
E. I. Shnyukova ◽  
E. K. Zolotareva
Keyword(s):  
Ecological Role

An inter-dependence of flood and drought: disentangling amphibian beta diversity in seasonal floodplains

2017 ◽  
Vol 68 (11) ◽  
pp. 2115 ◽  
Author(s):  
Leonardo F. B. Moreira ◽  
Tainá F. Dorado-Rodrigues ◽  
Vanda L. Ferreira ◽  
Christine Strüssmann
Keyword(s):  
Community Structure ◽  
Environmental Factors ◽  
Quantitative Data ◽  
Explanatory Variable ◽  
Biotic Interactions ◽  
Ecological Role ◽  
Β Diversity ◽  
Amphibian Community ◽  
Dry Seasons

Species composition in floodplains is often affected by different structuring factors. Although floods play a key ecological role, habitat selection in the dry periods may blur patterns of biodiversity distribution. Here, we employed a partitioning framework to investigate the contribution of turnover and nestedness to β-diversity patterns in non-arboreal amphibians from southern Pantanal ecoregion. We investigated whether components of β-diversity change by spatial and environmental factors. We sampled grasslands and dense arboreal savannas distributed in 12 sampling sites across rainy and dry seasons, and analysed species dissimilarities using quantitative data. In the savannas, both turnover and nestedness contributed similarly to β diversity. However, we found that β diversity is driven essentially by turnover, in the grasslands. In the rainy season, balanced variation in abundance was more related to altitude and factors that induce spatial patterns, whereas dissimilarities were not related to any explanatory variable during dry season. In the Pantanal ecoregion, amphibian assemblages are influenced by a variety of seasonal constraints on terrestrial movements and biotic interactions. Our findings highlighted the role of guild-specific patterns and indicated that mass effects are important mechanisms creating amphibian community structure in the Pantanal.

Erratum: FeAs2 biomineralization on encrusted bacteria in hot springs: an ecological role of symbiotic bacteria

2004 ◽  
Vol 41 (4) ◽  
pp. 481
Author(s):  
Kazue Tazaki ◽  
Islam ABM Rafiqul ◽  
Kaori Nagai ◽  
Takayuki Kurihara
Keyword(s):  
Hot Springs ◽  
Symbiotic Bacteria ◽  
Ecological Role
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