scholarly journals The Periodic Response of Tidal Flat Sediments to Runoff Variation of Upstream Main River: A Case Study in the Liaohe Estuary Wetland, China

Water ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 61
Author(s):  
Haifu Li ◽  
Lifeng Li ◽  
Fangli Su ◽  
Tieliang Wang ◽  
Peng Gao
Keyword(s):  
River Runoff ◽  
Tidal Flat ◽  
Low Frequency ◽  
210Pb Dating ◽  
Tidal Flats ◽  
Estuarine Sediments ◽  
Periodic Response ◽  
Liaohe River ◽  
Tidal Flat Sediments ◽  
Frequency Reproduction

(1) Background: To reveal the intrinsic relationship between the tidal flat sediments in an estuary wetland and the runoff from the upstream river. This research was conducted in the tidal flats of the Liaohe estuary wetland. (2) Methods: The 137Cs and 210Pb dating technique was used to reconstruct the time correspondence between tidal flat sediments and runoff, and the periodic response was explored between the changes in the tidal flat sediments and runoff based on the spectrum analysis method. (3) Results: The average sedimentation rate in the tidal flat was 2.24 cm·year−1 during the past 50 years. The amount of fine sediment particles deposited on the estuary tidal flat was directly related to the amount of sediments transported by the river and inversely proportional to the ability of rivers to transport fine matter. The high frequency reproduction cycle of 14–15 years in the flood season flow and 5–6 years in the annual sediment discharge of the Liaohe River correspond to the high and low frequency reproduction cycles of the median size of sediments in Liaohe estuarine wetland tidal flats. (4) Conclusions: The research clarified the hydrological constraints of the action law between Liaohe River runoff and the estuarine sediments. The periodic response between Liaohe River runoff and the sediment was established.

scholarly journals Factors affecting denitrification and anammox rates in tidal flat sediments

2013 ◽  
Vol 69 (2) ◽  
pp. I_1146-I_1150
Author(s):  
Tomomi SHINOZAKI ◽  
Yusuke UMEDA ◽  
Kazuo MURAKAMI ◽  
Tomohiro KUWAE ◽  
Kouta NAKASE
Keyword(s):  
Tidal Flat ◽  
Factors Affecting ◽  
Tidal Flat Sediments

Evaluation of heavy metal contamination in the tidal flat sediments of Nantong, East China

2021 ◽  
Vol 14 (6) ◽  
Author(s):  
Zhuyou Sun ◽  
Gang Zhang ◽  
Xiuqiang Peng ◽  
Yinjie Wei ◽  
Kaichao Wan ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Tidal Flat ◽  
Metal Contamination ◽  
Heavy Metal Contamination ◽  
East China ◽  
Tidal Flat Sediments

Multifractal characterization of microbially induced magnesian calcite formation in Recent tidal flat sediments

1997 ◽  
Vol 109 (1-2) ◽  
pp. 37-51 ◽  
Author(s):  
Jürgen Kropp ◽  
Arthur Block ◽  
Werner von Bloh ◽  
Thomas Klenke ◽  
H.J. Schellnhuber
Keyword(s):  
Tidal Flat ◽  
Magnesian Calcite ◽  
Tidal Flat Sediments

scholarly journals Vorschlag zur bodenartlichen Kennzeichnung von Wattsedimenten

1960 ◽  
Vol 11 (1) ◽  
pp. 190-195
Author(s):  
J. L. Ruyter
Keyword(s):  
Grain Size ◽  
Physical Properties ◽  
Tidal Flat ◽  
Soil Analysis ◽  
Boundary Values ◽  
Special Mapping ◽  
Tidal Flat Sediments

Abstract. During a special mapping in the tidal flat of Eastern Frisia the question arose as to how the soils in this area could most suitably be classified and represented on maps (grain size mixtµres). The grouping suggested in this paper is done according to chemical and physical properties of these recent tidal flat sediments. Simultaneously conformity with the soil definitions of the marsh mapping by the „Niedersächsisches Landesamt für Bodenforschung" was tried to be reached. Based on the soil analysis, the most outstanding qualities of tidal flat sediments found here and their relations are being discussed. Furthermore the boundary values for the classification are investigated.

What ecological role do soft-substrate tide pools play for fishes? Difference in community structures between estuarine and coastal tidal flats in subtropical Japan

2020 ◽  
Vol 71 (7) ◽  
pp. 737
Author(s):  
Taiga Kunishima ◽  
Katsunori Tachihara
Keyword(s):  
Tidal Flat ◽  
High Tide ◽  
Tidal Flats ◽  
Individual Species ◽  
Nursery Ground ◽  
Ecological Role ◽  
Soft Substrate ◽  
Use Patterns ◽  
Habitat Value ◽  
Ecological Roles

Soft-substrate tide pools are considered important habitats for fishes from an ecological perspective. However, the ecological roles of such pools and use patterns by fish remain unclear, especially regarding differences between estuarine and coastal tidal flats. In this study, quantitative sampling using the quadrat method was performed in the estuarine and coastal tidal flats on Okinawa-jima Island of subtropical Japan during four seasons. Ecological roles of soft-substrate tide pools were classified as follows: (1) permanent habitat for residents; (2) nursery ground for transients; and (3) waiting area until high tide for accidental species. Within these classifications, the ecological role and value of tide pools for transient fishes varied between the tidal flat types. The habitat value of tide pools is higher for residents than for transient species because the habitat is not replaceable for residents because of their specific ability to survive there. By contrast, transient and accidental species use the tide pools as temporary habitats; however, their high diversity affects the variation in community structure on Okinawa-jima Island. Our results suggest that we should consider not only species diversity, but also habitat use patterns of individual species, together with their life history, when evaluating habitat value with regard to conservation and management of each tidal flat.

scholarly journals Combined analysis of sulfur and carbon contents, and foraminifer as paleoenvironmental indicators in tidal flat sediments on Miura Peninsula, Japan

2019 ◽  
Vol 226 ◽  
pp. 106256 ◽  
Author(s):  
Akihisa Kitamura ◽  
Yuka Yamamoto ◽  
Kazuyoshi Yamada ◽  
Atsushi Kubo ◽  
Takashi Toyofuku ◽  
...  
Keyword(s):  
Tidal Flat ◽  
Combined Analysis ◽  
Tidal Flat Sediments ◽  
Paleoenvironmental Indicators

Drivers of nano- and microplanktonic community structure in a Patagonian tidal flat ecosystem

2019 ◽  
Vol 41 (5) ◽  
pp. 621-639
Author(s):  
Juan F Saad ◽  
Maite A Narvarte ◽  
Mariza A Abrameto ◽  
Viviana A Alder
Keyword(s):  
Tidal Flat ◽  
Tidal Flats ◽  
Size Spectrum ◽  
Spatial Gradient ◽  
Total Biomass ◽  
Total Density ◽  
Phytoplankton Structure ◽  
Tidal Transport ◽  
Sw Atlantic ◽  
Inshore Waters

ABSTRACT Tidal flats are exceptionally dynamic coastal ecosystems. Tides are their main source of energy, whose influence decreases landwards (as land elevation increases), thus shaping physical, chemical and biological gradients. In this study, we assess whether the structure of nano- and microplankton varies along a spatial gradient in San Antonio Bay (SAB, SW Atlantic), a semi-desert coastal ecosystem with a wide tidal flat and a macrotidal regime. We hypothesize that the tidal effect shapes SAB’s both taxonomical groups and size spectrum. The seasonal sampling of 9 sites revealed that diatoms and small flagellates were the most abundant groups, together accounting for over 75% of total density in practically all sites and seasons. High densities of meroplanktonic stages of Ulva lactuca were recorded in spring at the innermost sites, accounting for over 95% of all planktonic cells. Slopes of the size spectrum analysis were in line with highly productive inshore waters (mean, −0.64) and showed that larger phytoplankton was the main contributor to total biomass, despite its decreasing importance toward inner sites. The spatial and seasonal variations found for lower trophic web compartments provide evidence of the importance of tidal transport in ruling phytoplankton structure in tidal flats under strong macrotidal regimes.

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