| pelagicoccus croceus sp. nov., a novel marine member of the family puniceicoccaceae within the phylum 'verrucomicrobia' isolated from seagrass. | an obligately aerobic, spherical, non-motile, pale-yellow pigmented bacterium was isolated from a piece of leaf of seagrass, enhalus acoroides (l.f.) royle, grown in okinawa, japan and was subjected to a polyphasic taxonomic study. phylogenetic analyses based on 16s rrna gene sequences revealed that the novel isolate n5fb36-5(t) shared approximately 96-98 % sequence similarity with the species of the genus pelagicoccus of the family puniceicoccaceae within the phylum 'verrucomicrobia'. the dna-d ... | 2007 | 18048742 |
| rhizobacterial population density and nitrogen fixation in seagrass community of gulf of mannar, india. | seagrass rhizosphere generally supports high bacterial population density which plays a major role in determining the nutrient cycles of the sea. higher densities of total heterotrphic bacteria (26.3 x 10(6) cfu g(-1)), nitrogen fixing (27.3 x 10(3) cfug(-1), ammonifying (44.66 x 10(6) mpn g(-1)) and nitrifying bacteria (42.33 x 10(6) mpn g(-1)) have been registered in the seagrass areas than the non seagrass area. in particular, all these rhizosphere microbial population was higher in thalassia ... | 2012 | 23741797 |
| cultivation-dependent analysis of the microbial diversity associated with the seagrass meadows in xincun bay, south china sea. | microbial communities have largely existed in the seagrass meadows. a total of 496 strains of the bacteria in the seagrass meadows, which belonged to 50 genera, were obtained by the plate cultivation method from three sites of xincun bay, south china sea. the results showed that bacillales and vibrionales accounted for the highest proportions of organisms in all communities. the diversity of the bacteria in the sediment was higher than that associated with seagrass. thalassia hemperichii possess ... | 2015 | 26197731 |
| chemometric studies of multielemental composition of few seagrasses from gulf of mannar, india. | this paper discusses the determination of minerals content (cadmium, cobalt, chromium, copper, nickel, lead, manganese, magnesium, iron, zinc, sodium, potassium and calcium) of six seagrass samples, enhalus acoroides, thalassia hemprichii, halodule pinifolia, syringodium isoetifolium, cymodocea serrulata and cymodocea rotundata using inductively coupled plasma optical emission spectrophotometry and flame photometer. principal component analysis (pca) and hierarchical cluster analysis revealed di ... | 2011 | 21128004 |
| temporal changes in the abundance, leaf growth and photosynthesis of three co-occurring philippine seagrasses. | the analysis of the temporal changes in shoot density, areal leaf biomass, leaf growth and parameters of the photosynthesis-irradiance relationship of three tropical seagrass species (enhalus acoroides, thalassia hemprichii and cymodocea rotundata), co-existing in a shallow subtidal meadow in cape bolinao, philippines, shows that species-specific traits are significant sources of temporal variability, and indicates that these seagrass species respond differently to a common environmental forcing ... | 2001 | 11358580 |
| species diversity and abundance of marine crabs (portunidae: decapoda) from a collapsible crab trap fishery at kung krabaen bay, chanthaburi province, thailand. | the diversity and abundance of marine crabs from a collapsible crab trap fishery at kung krabaen bay, gulf of thailand, were observed from august 2012 to june 2013 using 10 sampling stations. the results showed that there were seven families, 11 genera and 17 species (two anomuran and 15 brachyuran crabs). the two anomuran species were clibanarius virescens (1,710 individuals) and clibanarius infraspinatus (558 individuals). for brachyuran crabs, portunidae was the most common family, including ... | 2017 | 28228916 |
| phytochelatin 2 accumulates in roots of the seagrass enhalus acoroides collected from sediment highly contaminated with lead. | phytochelatins (pcs), the heavy metal-binding peptides of plants, play a main function in heavy metal detoxification. in this study, enhalus acoroides samples collected at six distinct seagrass beds from the coast of khanh hoa province, viet nam, were evaluated for their pcs. the contents of different pcs in each organ including leaf, rhizome, and root were determined by using hplc analysis. significant differences of pc2 contents among specific organs and their relation were tested by anova, tu ... | 2017 | 28185077 |
| effect of nutrient enrichment on the source and composition of sediment organic carbon in tropical seagrass beds in the south china sea. | to assess the effect of nutrient enrichment on the source and composition of sediment organic carbon (soc) beneath thalassia hemprichii and enhalus acoroides in tropical seagrass beds, xincun bay, south china sea, intertidal sediment, primary producers, and seawater samples were collected. no significant differences on sediment δ(13)c, soc, and microbial biomass carbon (mbc) were observed between t. hemprichii and e. acoroides. soc was mainly of autochthonous origin, while the contribution of se ... | 2016 | 27334726 |
| heat stress of two tropical seagrass species during low tides - impact on underwater net photosynthesis, dark respiration and diel in situ internal aeration. | seagrasses grow submerged in aerated seawater but often in low o2 sediments. elevated temperatures and low o2 are stress factors. internal aeration was measured in two tropical seagrasses, thalassia hemprichii and enhalus acoroides, growing with extreme tides and diel temperature amplitudes. temperature effects on net photosynthesis (pn ) and dark respiration (rd ) of leaves were evaluated. daytime low tide was characterized by high po2 (54 kpa), ph (8.8) and temperature (38°c) in shallow pools. ... | 2016 | 26914396 |
| fungal community successions in rhizosphere sediment of seagrasses enhalus acoroides under pahs stress. | seagrass meadows represent one of the highest productive marine ecosystems and are of great ecological and economic values. recently, they have been confronted with worldwide decline. fungi play important roles in sustaining the ecosystem health as degraders of polycyclic aromatic hydrocarbons (pahs), but fewer studies have been conducted in seagrass ecosystems. hence, we investigated the dynamic variations of the fungal community succession under pah stress in rhizosphere sediment of seagrasses ... | 2015 | 26096007 |
| responses of bacterial communities in seagrass sediments to polycyclic aromatic hydrocarbon-induced stress. | the seagrass meadows represent one of the highest productive marine ecosystems, and have the great ecological and economic values. bacteria play important roles in energy flow, nutrient biogeochemical cycle and organic matter turnover in marine ecosystems. the seagrass meadows are experiencing a world-wide decline, and the pollution is one of the main reasons. polycyclic aromatic hydrocarbons (pahs) are thought be the most common. bacterial communities in the seagrass enhalus acoroides sediments ... | 2015 | 26048240 |
| biomonitoring of metal contamination in estuarine ecosystem using seagrass. | metals concentrations (as, cd, cu, hg and pb) in seawater, sediment and the seagrass (enhalus acoroides) were analysed at pulai river estuary, johor straits, malaysia. in this research, enhalus acoroides was used in order to find it's efficiency in up taking metals with a role in phytoremediation. seawater, sediment and enhalus acoroides samples were collected, and data of pearson's correlation coefficients were analysed using spss 16 software. results show that lead levels were the highest meta ... | 2015 | 26029376 |
| the kuroshio current influences genetic diversity and population genetic structure of a tropical seagrass, enhalus acoroides. | information on genetic diversity and differentiation of seagrass populations is essential for the conservation of coastal ecosystems. however, little is known about the seagrasses in the indo-west pacific ocean, where the world's highest diversity of seagrasses occurs. the influence of sea currents on these populations is also unknown. we estimated the genetic diversity and population genetic structure and identified reproductive features in enhalus acoroides populations from the yaeyama islands ... | 2014 | 25384848 |
| 17-year change in species composition of mixed seagrass beds around santiago island, bolinao, the northwestern philippines. | effects of fish culture can alter the adjacent ecosystems. this study compared seagrass species compositions in 2012 with those in 1995, when fish culture was less intensive compared to 2012 in the region. observations were conducted at the same four sites around santiago island, bolinao: (1) silaqui island, (2) binaballian loob, (3) pislatan and (4) santa barbara, and by using the same methods as those of bach et al. (1998). these sites were originally selected along a siltation gradient, rangi ... | 2014 | 25304738 |
| a stock assessment of the blue swimming crab portunus pelagicus (linnaeus, 1758) for sustainable management in kung krabaen bay, gulf of thailand. | a stock assessment of blue swimming crabs, portunus pelagicus was conducted with crab gill nets and collapsible crab traps at kung krabaen bay, in the eastern gulf of thailand, from 2008 to 2009. several key indicators show that p. pelagicus population is in crisis. fishing mortality shows an increase to 4.14. the exploitation rate is 0.71, higher than the optimal value of 0.38. the size of the mature females has also decreased from 8.10±0.39 cm to 7.52±1.14 cm. the average fecundity is 0.572×10 ... | 2014 | 25210587 |
| solar radiation and tidal exposure as environmental drivers of enhalus acoroides dominated seagrass meadows. | there is strong evidence of a global long-term decline in seagrass meadows that is widely attributed to anthropogenic activity. yet in many regions, attributing these changes to actual activities is difficult, as there exists limited understanding of the natural processes that can influence these valuable ecosystem service providers. being able to separate natural from anthropogenic causes of seagrass change is important for developing strategies that effectively mitigate and manage anthropogeni ... | 2012 | 22479541 |
| development of microsatellite primers of the largest seagrass, enhalus acoroides (hydrocharitaceae). | microsatellite primers were developed for the seagrass enhalus acoroides to investigate genetic variation and identify clonal structure. | 2012 | 22343541 |
| detection of seagrass distribution changes from 1991 to 2006 in xincun bay, hainan, with satellite remote sensing. | seagrass distribution is a very important index for costal management and protection. seagrass distribution changes can be used as indexes to analyze the reasons for the changes. in this paper, in situ hyperspectral observation and satellite images of quickbird, cbers (china brazil earth resources satellite data) and landsat data were used to retrieve bio-optical models and seagrass (enhalus acoroides, thalassia hemperichii) distribution in xincun bay, hainan province, and seagrass distribution ... | 2009 | 22399941 |
| settlement preferences and early migration of the tropical sea cucumber holothuria scabra. | settlement and post-settlement processes of the sea cucumber holothuria scabra jaeger were studied in the laboratory. independent and paired choice experiments revealed that several substrates could induce metamorphosis into pentactulae, but that specific substrates favoured settlement. leaves of seagrass thalassia hemprichii, with or without their natural bio-film, yielded the highest settlement rates (4.8-10.5%). t. hemprichii was preferred as a settlement substrate over sand, crushed coral, s ... | 2000 | 10817830 |
| inhibitory effects of mercury and cadmium on seed germination of enhalus acoroides (l.f.) royle. | | 1998 | 9484555 |
| seasonal changes in environmental variables, biomass, production and nutrient contents in two contrasting tropical intertidal seagrass beds in south sulawesi, indonesia. | seasonal dynamics were studied by monthly monitoring of biological and environmental variables in permanent quadrats in two contrasting intertidal seagrass beds in south sulawesi, indonesia, from february 1991 to january 1992. datasets were analysed with canonical correlation analysis for correlations between environmental and biological variables. considerable variation in biomass, production and plant tissue nutrient contents in a monospecific seagrass bed of enhalus acoroides, growing on a co ... | 1994 | 28313947 |