scholarly journals The measurement of microbial carbohydrate exopolymers from intertidal sediments

1995 ◽  
Vol 40 (7) ◽  
pp. 1243-1253 ◽  
Author(s):  
G. J. C. Underwood ◽  
D. M. Paterson ◽  
R. J. Parkes
Keyword(s):  
Intertidal Sediments

Draft genome of starch-degrading actinobacterium, Microbacterium mangrovi MUSC 115T isolated from intertidal sediments

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Hooi-Leng Ser ◽  
Wen-Si Tan ◽  
Huey-Jia Cheng ◽  
Wai-Fong Yin ◽  
Kok-Gan Chan ◽  
...  
Keyword(s):  
Draft Genome ◽  
Intertidal Sediments ◽  
Total Size ◽  
General Physiology ◽  
Genome Features

Microbacterium mangrovi strain MUSC 115T was isolated from intertidal sediments of Kuantan, Malaysia. Here we describe the draft genome of amylolytic strain MUSC 115T with total size of 4.4 Mbp from 55 contigs and G + C content of 70.0%. Total of 4,096 coding genes were observed, with 2 putative amylases genes in the draft genome of MUSC 115T. These genome features of MUSC 115T can improve our understanding of its starch-degrading mechanism and general physiology of the species, which provide opportunities for biotechnological and industrial exploitation.

scholarly journals The Variation on Sediment Reworking with Influencing Factors by a Sand Bubbler Crab, Scopimera globosa, in Intertidal Sediments of the Anmyeon Island, Korea

2021 ◽  
Vol 13 (10) ◽  
pp. 5703
Author(s):  
Jaehwan Seo ◽  
Bon Joo Koo
Keyword(s):  
Chlorophyll A ◽  
Influencing Factors ◽  
Surface Sediment ◽  
Intertidal Sediments ◽  
Daily Production ◽  
Chlorophyll A Concentration ◽  
Sediment Reworking ◽  
Pellet Production ◽  
Crab Density ◽  
Annual Sediment

Though biological and ecological characteristics of Scopimera globosa have been intensively investigated, little has been understood on bioturbation, especially sediment reworking. This study was designed to evaluate variation on sediment reworking of S. globosa based on feeding pellet production (FP) and burrowing pellet production (BP) with influencing factors and estimating the chlorophyll content reduction within the surface sediment by its feeding. The FP and BP largely fluctuated according to chlorophyll a concentration and crab density, but both were not influenced by temperature. The FP was enhanced by chlorophyll a concentration, whereas both FP and BP were restricted by crab density. The daily individual production was highest in spring, followed by fall and summer, with values of 25.61, 20.70 and 3.90 g ind.−1 d−1, respectively, while the total daily production was highest in fall, followed by summer and spring 2150, 1660 and 660 g m−2 d−1, respectively. The daily sediment reworking based on the FP and BP of Scopimera was highest in fall, followed by summer and spring, with values of 1.91, 1.70 and 0.77 mm d-1 and the annual sediment reworking rate of this species was calculated 40 cm year−1 based on its density in this study area. The chlorophyll a reduction ratio was estimated from 11 to 24% in one day by its feeding. These results imply that the sediment reworking of S. globosa is regulated by food abundance and its density, and Scopimera is an important bioturbator, greatly influencing biogeochemical changes in the intertidal sediments.

scholarly journals Sampling, separation, and quantification of N ‐acyl homoserine lactones from marine intertidal sediments

2021 ◽  
Vol 19 (2) ◽  
pp. 145-157
Author(s):  
Frederike Stock ◽  
Emilio Cirri ◽  
Samarasinghe Gunasekara Liyanage Is Nuwanthi ◽  
Willem Stock ◽  
Nico Ueberschaar ◽  
...  
Keyword(s):  
Intertidal Sediments ◽  
Homoserine Lactones ◽  
Acyl Homoserine Lactones

Evidence of High Sea Level during Isotope Stage 5c in Queensland, Australia

1985 ◽  
Vol 24 (1) ◽  
pp. 103-114 ◽  
Author(s):  
J. W. Pickett ◽  
C. H. Thompson ◽  
R. A. Kelley ◽  
D. Roman
Keyword(s):  
Sea Level ◽  
New South ◽  
Good Condition ◽  
Coastal Dunes ◽  
Intertidal Sediments ◽  
South Wales ◽  
Eastern Australia ◽  
Maximum Period ◽  
High Dune

Thirty-nine species of scleractinian corals have been recovered from under a high dune on the western (mainland) side of North Stradbroke Island, eastern Australia. The corals are associated with thin intertidal sediments and their good condition implies burial in situ and preservation in a saturated zone. Most likely this occurred as the coast prograded and a large dune advanced into the littoral zone, burying intertidal sediments and coral. The species assemblage indicates a sheltered environment but one open to the ocean without wide fluctuations in salinity. Three species yielded a mean 230Th/234U age of 105,000 yr B.P. which is significantly younger than the nearest Pleistocene corals at Evans Head, New South Wales. The corals provide evidence of a sea stand near present sea level during isotope Stage 5c, which is considerably higher than previously suggested for this period. Their good condition implies that the overlying parabolic dune is of comparable age and formed during that high stand of sea level. Also, the isotope age provides a maximum period for the development of giant podzols in the podzol chronosequences on coastal dunes in southern Queensland.

Dissolved gaseous mercury formation and mercury volatilization in intertidal sediments

2017 ◽  
Vol 603-604 ◽  
pp. 279-289 ◽  
Author(s):  
Rute Cesário ◽  
Laurier Poissant ◽  
Martin Pilote ◽  
Nelson J. O'Driscoll ◽  
Ana M. Mota ◽  
...  
Keyword(s):  
Intertidal Sediments ◽  
Gaseous Mercury ◽  
Dissolved Gaseous Mercury ◽  
Mercury Volatilization

scholarly journals Seasonal changes in the biochemical fate of carbon fixed by benthic diatoms in intertidal sediments

2017 ◽  
Vol 63 (2) ◽  
pp. 550-569 ◽  
Author(s):  
Tanja C. W. Moerdijk-Poortvliet ◽  
Peter van Breugel ◽  
Koen Sabbe ◽  
Olivier Beauchard ◽  
Lucas J. Stal ◽  
...  
Keyword(s):  
Seasonal Changes ◽  
Benthic Diatoms ◽  
Intertidal Sediments

Small-scale temporal and spatial variability in the erosion threshold and properties of cohesive intertidal sediments

2006 ◽  
Vol 26 (3) ◽  
pp. 351-362 ◽  
Author(s):  
T.J. Tolhurst ◽  
E.C. Defew ◽  
J.F.C. de Brouwer ◽  
K. Wolfstein ◽  
L.J. Stal ◽  
...  
Keyword(s):  
Spatial Variability ◽  
Small Scale ◽  
Intertidal Sediments ◽  
Erosion Threshold ◽  
Temporal And Spatial Variability ◽  
Temporal And Spatial

Rapid assessment of macro algal cover on intertidal sediments in a nutrified estuary

2002 ◽  
Vol 285 (1-3) ◽  
pp. 97-105 ◽  
Author(s):  
D.B. Nedwell ◽  
A.S. Sage ◽  
G.J.C. Underwood
Keyword(s):  
Rapid Assessment ◽  
Intertidal Sediments ◽  
Algal Cover
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