The sediment-water exchange of nitrogen, nitrification, denitrification and sedimentary oxygen production were simultaneously measured in the Banzu intertidal sand-flat, Tokyo Bay, Japan. The exchange flux across the sediment-water interface showed a sink of dissolved inorganic nitrogen (DIN) in the light. However, in the dark, the intertidal sediment acted as a source. The diffusive flux obtained...... hiện toàn bộ
Yoshihiro Mazda, Michimasa Magi, Motohiko Kogo, Phan Nguyen Hong
The wave reduction (wave period; 5–8 sec.) was investigated in amangrove reforestation area (Kandelia candel) close toaquaculture ponds in the Tong King delta, Vietnam. On one site where only young mangrove trees grew, the wavereduction due to the drag force on the trees was hardlyeffective. On the other site where mangrove trees weresufficiently tall, the rate of wave reduction per 100 m was asla...... hiện toàn bộ
As part of a larger study on the bioremediation of oil spills in tropical mangrove habitats, we conducted a series of flask experiments to test for the presence of hydrocarbon degrading micro‐organisms in representative wetland habitats. Also tested was the biodegradation of selected oils (Gippsland Crude, Arabian Light Crude and Bunker C), that are transported along the Australian coast. We also ...... hiện toàn bộ
Dữ liệu về cấu trúc tầng cây và tỷ lệ quang hợp đã được sử dụng để ước tính sự cố định carbon tổng net của tán lá và sự tích lũy carbon dưới dạng sinh khối sống trong các rừng ngập mặn tại kênh Hinchinbrook, Australia. Tổng lượng carbon net được cố định hàng năm của tán lá được ước tính khoảng 29 t C ha−1 năm−1. Con số này tương đương với khoảng 204.000 t C năm−1 cho tất cả các rừng ngập mặn ở kên...... hiện toàn bộ
M.C.L. Cohen, R.J. Lara, J.F. da F. Ramos, T. Dittmar
Sodium, potassium, magnesium, calcium and physico‐chemical parameters were monitored for one year in a mangrove tidal creek near Bragança, North Brazil, to determine their tidally induced and seasonal variations and the main parameters controlling the concentration of these cations. On a daily basis, cation concentrations showed a strong tidal rhythm due to the mixing of estuarine and mangrove wat...... hiện toàn bộ
Several truckloads of mixed waste oil were dumped onto a short section of road and into the intertidal wetlands near Cairns, Queensland in January, 1994. The oil contaminated a band of mangroves 15–44 m wide along approximately 200 m of road. Impacted marsh included Melaleuca forest and high-intertidal mangroves. The initial concentrations of petroleum hydrocarbons in surface sediments reached 17%...... hiện toàn bộ
The dependence of dispersion in a tidal creek on the vegetation density in a fringing mangrove swamp is discussed through a numerical model. A secondary circulation prevails everywhere in the tidal creek‐mangrove swamp system and is generated by the overflow into the swamp at every high tide. As a result, dissolved and suspended matter moving with the circulation is trapped in the swamp for a frac...... hiện toàn bộ
Jean-Pierre Carmouze, Valeria Bellotto, John Maddock, Antonio Romanazzi
A simple versatile in situ sampler for extracting pore water fromsediments has been developed, working as a convective samplingdevice (harpoon) or a solute diffusion device (peeper). Used asa harpoon, it avoids modification of vertical gradients of soluteconcentrations, because no suction is applied. Used as a peeper,because of its higher diffusion/volume ratio, its contact timewith the sediment i...... hiện toàn bộ
The mangrove-fringed Klang Strait, Malaysia, retains approximately 65 billion penaeid prawn larvae annually prior to their settlement in coastal nursery grounds. This phenomenon appears to be due principally to tidal currents and lateral trapping in mangrove-fringed channels, the wind playing an insignificant role.