Modeling of surficial sediment alteration by biology

2004 ◽  
Vol 115 (5) ◽  
pp. 2584-2584
Author(s):  
Dajun Tang
Keyword(s):  
Surficial Sediment ◽  
Sediment Alteration

Nearshore surficial sediment textures; Beaufort Sea, Alaska

1980 ◽  
Author(s):  
Peter W. Barnes ◽  
Erk Reimnitz ◽  
Robin Ross
Keyword(s):  
Beaufort Sea ◽  
Surficial Sediment

Surficial Sediment Contamination in Lakes Erie and Ontario: A Comparative Analysis

2002 ◽  
Vol 28 (3) ◽  
pp. 437-450 ◽  
Author(s):  
Christopher H. Marvin ◽  
Murray N. Charlton ◽  
Eric J. Reiner ◽  
Terry Kolic ◽  
Karen MacPherson ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Sediment Contamination ◽  
Surficial Sediment

Analysis and occurrence of emerging chlorinated and brominated flame retardants in surficial sediment of the Dalian costal area in China

2011 ◽  
Vol 13 (11) ◽  
pp. 3104 ◽  
Author(s):  
De-Gao Wang ◽  
Mehran Alaee ◽  
Ed Sverko ◽  
Yi-Fan Li ◽  
Eric J. Reiner ◽  
...  
Keyword(s):  
Flame Retardants ◽  
Brominated Flame Retardants ◽  
Surficial Sediment

scholarly journals Sediment underneath charophyte meadows is enriched in viable ephippia and enhances the benthic periphytic biofilm

Hydrobiologia ◽  
2021 ◽  
Author(s):  
María A. Rodrigo ◽  
Eric Puche ◽  
Matilde Segura ◽  
Adriana Arnal ◽  
Carmen Rojo
Keyword(s):  
Surficial Sediment ◽  
Aquatic Systems ◽  
Habitat Conservation ◽  
Design Experiment ◽  
Diverse Community ◽  
Sediment Layers ◽  
Periphytic Biofilm ◽  
Factorial Design Experiment ◽  
Outdoor Mesocosms

AbstractWe contribute to the knowledge of charophyte meadows as key components of aquatic systems by analysing how they affect wetland sediments. We performed a factorial-design experiment with limnocorrals (outdoor mesocosms) in a Mediterranean protected wetland with presence or absence of charophytes [Chara vulgaris (CV) and Chara hispida (CH), planted from cultures or recruited in situ from germination of their fructifications]. The first 1 cm-surficial and 2 cm-bottom sediment layers were analysed for cladoceran ephippia, ostracods valves, benthic community of bacteria and periphytic biofilm, and charophyte fructifications. In the surficial sediment, the ephippia density was fourfold higher in the conditions with charophytes than in sites with no-charophytes and higher apparent viability was found. The surficial sediment periphyton biofilm was composed mainly of diatoms, with tenfold higher biomass underneath charophytes, and a much diverse community. The specific microhabitat generated by each charophyte species was reflected in the different abundances and relationships between the analysed components, firstly establishing a divergence with the sediment without meadows and, secondly, a distinction between the meadows of CH and CV that exhibit particular morphology-architecture, might exudate different metabolites and might have different allelopathic capacities over microalgae and microinvertebrates. Thus, the charophyte–sediment tandem is relevant for biodiversity and habitat conservation.

scholarly journals RONA LINGKUNGAN GEOLOGI KELAUTAN DI PERAIRAN P. ROTE NUSA TENGGARA TIMUR

2016 ◽  
Vol 11 (3) ◽  
pp. 149
Author(s):  
Yudi Darlan ◽  
Udaya Kamiludin
Keyword(s):  
Environmental Changes ◽  
Good Condition ◽  
High Energy ◽  
Surficial Sediment ◽  
Silty Sand ◽  
Sedimentation Environment ◽  
Standard Quality ◽  
Marine Environmental ◽  
Base Data

Sejalan dengan perubahan Pulau Rote dari Pemerintahan Kecamatan menjadi Kabupaten, pembangunan infrastruktur pesisir dan sektor lainnya di pulau ini meningkat. Pembangunan tersebut dari tahun ke tahun dapat menimbulkan perubahan kondisi lingkungan pesisir dan perairan Pulau Rote. Perubahan kondisi lingkungan dapat diidentifikasi melalui analisis data rona lingkungan. Data seismik memperlihatkan morfologi teras-teras pantai, dan intrusi diapir serpih di perairan Pulau Rote yang mengiindikasikan pulau ini mengalami proses pengangkatan sejak ribuan tahun yang lalu hingga sekarang. Sedimen permukaan dasar laut Pulau Rote terdiri atas pasir dan pasir lanauan mengandung mineral kuarsa, piroksen, mineral karbonatan dan cangkang moluska menunjukkan kondisi lingkungan sedimentasi rendah. Baku Mutu air dan sedimen permukaan dasar laut di perairan Pulau Rote dalam kondisi baik. Jenis pantainya berupa pantai berenergi tinggi, pantai erosi, pantai teluk, dan pantai kantong pasir masih dalam kondisi baik dan cukup bagus bagi wisata pantai dan laut. Hasil penelitian ini menunjukkan sebagain besar kondisi lingkungan perairan Pulau Rote masih dalam kondisi baik. Sebagian kecil ada perubahan sebagai dampak aktivitas manusia. Kata kunci: rona lingkungan, geologi kelautan, intrusi, diapir serpih, Nusa Tenggara Timur, Pulau Rote Since the Rote Island government changed from the Kecamatan to Kabupaten Government, the development of coastal infrastructures and other sectors in the island increased. The development from time to time can lead to changes in coastal and marine environmental of the Rote Island. The environmental conditions can be identified through analysis environmental base data. The seismic data shows the morphology of coastal terraces, and intrusion of shale diapir in the Rote Island waters which indicate that this island has uplifted since thousands years ago until now. Surficial sediment of the Rote Island waters consists of sand and silty sand containing quartz and pyroxene minerals, and shells of mollusks which indicate low sedimentation environment. The standard quality of surface water and surficial sediment of the Rote Island is still in good condition. Coastal characteristics of this island consist of high-energy beaches, sand pocket beaches, bays, and erosion coasts which are still in good condition and suitable for tourism. This study shows that in general the environment of the Rote Island waters environment is normal conditions. A few of environmental changes is as an impact of human activities. Keywords: environment features, intrusion, shale diapir, Nusa Tenggara Timur, Rote island.

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