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51.
From Bathymetry to Bioshields: A Review of Post-Tsunami Ecological Research in India and its Implications for Policy 总被引:1,自引:0,他引:1
Nibedita Mukherjee Farid Dahdouh-Guebas Vena Kapoor Rohan Arthur Nico Koedam Aarthi Sridhar Kartik Shanker 《Environmental management》2010,46(3):329-339
More than half a decade has passed since the December 26th 2004 tsunami hit the Indian coast leaving a trail of ecological,
economic and human destruction in its wake. We reviewed the coastal ecological research carried out in India in the light
of the tsunami. In addition, we also briefly reviewed the ecological research in other tsunami affected countries in Asia
namely Sri Lanka, Indonesia, Thailand and Maldives in order to provide a broader perspective of ecological research after
tsunami. A basic search in ISI Web of Knowledge using keywords “tsunami” and “India” resulted in 127 peer reviewed journal
articles, of which 39 articles were pertaining to ecological sciences. In comparison, Sri Lanka, Indonesia, Thailand and Maldives
had, respectively, eight, four, 21 and two articles pertaining to ecology. In India, bioshields received the major share of
scientific interest (14 out of 39) while only one study (each) was dedicated to corals, seagrasses, seaweeds and meiofauna,
pointing to the paucity of research attention dedicated to these critical ecosystems. We noted that very few interdisciplinary
studies looked at linkages between pure/applied sciences and the social sciences in India. In addition, there appears to be
little correlation between the limited research that was done and its influence on policy in India. This review points to
gap areas in ecological research in India and highlights the lessons learnt from research in other tsunami-affected countries.
It also provides guidance on the links between science and policy that are required for effective coastal zone management. 相似文献
52.
Determining the depositional pattern by resistivity–seismic inversion for the aquifer system of Maira area,Pakistan 总被引:1,自引:0,他引:1
Velocity and density measured in a well are crucial for synthetic seismic generation which is, in turn, a key to interpreting
real seismic amplitude in terms of lithology, porosity and fluid content. Investigations made in the water wells usually consist
of spontaneous potential, resistivity long and short normal, point resistivity and gamma ray logs. The sonic logs are not
available because these are usually run in the wells drilled for hydrocarbons. To generate the synthetic seismograms, sonic
and density logs are required, which are useful to precisely mark the lithology contacts and formation tops. An attempt has
been made to interpret the subsurface soil of the aquifer system by means of resistivity to seismic inversion. For this purpose,
resistivity logs and surface resistivity sounding were used and the resistivity logs were converted to sonic logs whereas
surface resistivity sounding data transformed into seismic curves. The converted sonic logs and the surface seismic curves
were then used to generate synthetic seismograms. With the utilization of these synthetic seismograms, pseudo-seismic sections
have been developed. Subsurface lithologies encountered in wells exhibit different velocities and densities. The reflection
patterns were marked by using amplitude standout, character and coherence. These pseudo-seismic sections were later tied to
well synthetics and lithologs. In this way, a lithology section was created for the alluvial fill. The cross-section suggested
that the eastern portion of the studied area mainly consisted of sandy fill and the western portion constituted clayey part.
This can be attributed to the depositional environment by the Indus and the Kabul Rivers. 相似文献
53.
Hussain Sajjad Mubeen Muhammad Ahmad Ashfaq Akram Waseem Hammad Hafiz Mohkum Ali Mazhar Masood Nasir Amin Asad Farid Hafiz Umar Sultana Syeda Refat Fahad Shah Wang Depeng Nasim Wajid 《Environmental science and pollution research international》2020,27(32):39676-39692
Environmental Science and Pollution Research - Land use/land cover (LULC) change has serious implications for environment as LULC is directly related to land degradation over a period of time and... 相似文献
54.
Zafar Mazhar Iqbal Kali Sundas Ali Mehtabidah Riaz Muhammad Asam Naz Tayyaba Iqbal Muhammad Mazhar Masood Noshin Munawar Kashif Jan Bilal Ahmed Sohail Waseem Amir Niazi Muhammad Bilal Khan 《Environmental science and pollution research international》2020,27(34):42369-42389
Environmental Science and Pollution Research - Dechlorane Plus (DP) is an unregulated, highly chlorinated flame retardant. It has been manufactured from past 40 years but its presence in... 相似文献
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肯尼亚米达河红树林森林恢复状况:一个受损害的还是有保障的未来? 总被引:3,自引:0,他引:3
James Gitundu Kairo Farid Dahdouh-Guebas Patrick O. Gwada Catrick O. Gwada Nico Koedam 《Ambio-人类环境杂志》2002,31(7):562-568
本文研究了米达河(南纬3°20',东经40°00')两个红树林森林地区(乌永博和基雷普维)带状横断面的红树林植被的结构和恢复型式. 相似文献
58.
Stefano Cannicci Marina Gomei Farid Dahdouh-Guebas Rocco Rorandelli Antonio Terlizzi 《Marine Biology》2007,151(4):1331-1342
The abundance of trophic sources on the intertidal zone is discontinuous and their supply can vary both in a predictable or
unpredictable way. The Mediterranean semi-terrestrial crab Pachygrapsus marmoratus, is known, as adult, to entirely rely on the intertidal trophic sources, and, consequently, it faces the fluctuations of
nutritional sources and quality. To clarify the relationships between the feeding habits of an Italian population of P. marmoratus and the temporal variation of its food sources, we carried out a 2-year sampling protocol. Data on seasonal variation in
composition of intertidal food item assemblages, on the average content in N and C of the commonest algae, on seasonal changes
in crabs feeding habits were collected and compared using a suite of multivariate and univariate techniques. Results showed
that P. marmoratus takes advantage of the recruitment phase of the most common invertebrates, affecting and controlling the abundance even of
those species whose adults are out of its reach. It can act both as a herbivore, and as a carnivore that shifts between bivalves,
more abundant in spring/summer, and the periwinkle Melaraphe neritoides, during winter. In conclusion, we provide evidences on the food choice of this common rocky shore species, which is very
plastic and capable of relying on many trophic sources, possibly influencing the abundance and/or the population structure
of a number of intertidal populations. 相似文献
59.
Microporous chitosan (CS) membranes were directly prepared by extraction of poly(ethylene glycol) (PEG) from CS/PEG blend membrane and were examined for iron and manganese ions removal from aqueous solutions. The different variables affecting the adsorption capacity of the membranes such as contact time, pH of the sorption medium, and initial metal ion concentration in the feed solution were investigated on a batch adsorption basis. The affinity of CS/PEG blend membrane to adsorb Fe(II) ions is higher than that of Mn(II) ions, with adsorption equilibrium achieved after 60 min for Fe(II) and Mn(II) ions. By increasing CS/PEG ratio in the blend membrane the adsorption capacity of metal ions increased. Among all parameters, pH has the most significant effect on the adsorption capacity, particularly in the range of 2.9-5.9. The increase in CS/PEG ratio was found to enhance the adsorption capacity of the membranes. The effects of initial concentration of metal ions on the extent of metal ions removal were investigated in detail. The experimental data were better fitted to Freundlich equation than Langmuir. In addition, it was found that the iron and manganese ions adsorbed on the membranes can be effectively desorbed in 0.1 mol/L HCl solution (up to 98% desorption efficiency) and the blend membranes can be reused almost without loss of the adsorption capacity for iron and manganese ions. 相似文献
60.
The livers and kidneys of freshwater fish species, Oreochromis niloticus and Clarias lazera, collected from sewage polluted sites (Ismailia and El-Bahr El-Azam) and industrial polluted sites (Shubra and El-Tebin) of Nile River were analyzed for different antioxidant defense enzymes. The liver and kidney glutathione transferase (GST), glutathione reductase (GR) and glutathione peroxidase (GPx) were higher in O. niloticus captured from all the polluted areas compared to the control. Low GST activities were found in 33.3%, 60% and 53% in the livers and 100%, 80% and 53% in the kidneys of C. lazera captured from El-Bahr El-Azam, Shubra and El-Tebin. GR and GPx activities increased in livers and kidneys of C. lazera collected from all areas except for Shubra, in which, GPx of livers and kidneys were low in 100% of C. lazera. Metals Ni, Co, Cr, Se, Cd and Pb resulting from industrial wastes and metal mining wastes were enhanced at the polluted sites. SDS-PAGE of liver and kidney of O. niloticus and C. lazera indicated the increase in bands number and intensity of protein bands with subunit molecular weights between 30–20 KDa in polluted areas. Several enzymes from glutathione system (activity and protein) constitute a sensitive biochemical indicator of chemical pollution. Relative changes of glutathione-dependent enzymes in both fish species suggest a different susceptibility to toxins. 相似文献