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51.
Yu Yingliang Hu Yu Gu Baojing Reis Stefan Yang Linzhang 《Environmental science and pollution research international》2022,29(10):13869-13880
Environmental Science and Pollution Research - China’s agriculture is dominated by smallholder farms, which have become major sources of negative environmental impacts including... 相似文献
52.
Pedro Reis Costa Sandra Lage Marisa Barata Pedro Pousão-Ferreira 《Marine Biology》2011,158(12):2805-2811
Marine toxins generated by harmful algal blooms can be transferred through the marine food web and ultimately cause massive
deaths of piscivorous predators. However, very few studies have explored the processes of accumulation and biotransformation
of paralytic shellfish toxins (PSTs) within fishes. White seabream (Diplodus sargus) were orally challenged with contaminated cockles (Cerastoderma edule) containing N-sulfocarbamoyl and decarbamoyl toxins and non-contaminated cockles afterwards. Specific PSTs that occurred
in low abundance in cockles (B1 7.6% and dcSTX 1.6% molar fraction) were the only toxins detected in fish viscera possibly
resulting from selective elimination and transformation of the various PSTs. Concentration of toxins progressively increased
in fish viscera throughout the uptake period. Toxins were then rapidly depurated (B1 0.905 day−1, dcSTX 0.467 day−1) when diet was changed to non-toxic cockles. Results indicate conversion of a precursor toxin into B1 which in turn might
be converted into dcSTX at a lower extent. Low accumulation efficiency of 1.7 and 5.0% was calculated to B1 and dcSTX, respectively.
This study contributes to a better understanding of dynamics of PSTs in fish and the fate of these compounds in the marine
food web. 相似文献
53.
Filipa S. Reis Isabel C. F. R. Ferreira Lillian Barros Celestino Santos-Buelga Anabela Martins 《Chemoecology》2011,21(3):151-159
Ectomycorrhizal (ECM) symbiosis plays a major role in nutrient cycling and the functioning of forest ecosystems. Trees with
well-developed ectomycorrhizas are more resistant to environmental stresses such as drought and to biotic stresses such as
root pathogens. The establishment of ECM symbiosis is triggered by signals produced by both partners. These signals lead to
morphological changes and a complex development of specific structures in both the plant root and the fungus. The development
of the ECM fungi, Paxillus involutus and Pisolithus arhizus, in the presence and the absence of the symbiont—Pinus pinaster—was evaluated as well as their antioxidant properties and phenolic compounds composition in response to the symbiotic association.
ECM fungi grew less in the presence of P. pinaster, with P. arhizus being less affected in growth and thus being more adapted to this association. Protocatechuic acid was found only in P. involutus, while P. pinaster roots, both in association and isolated, proved to have other phenolic acids, such as p-hydroxybenzoic and p-coumaric acids. The symbiosis between P. involutus and P. pinaster had no major effects on the symbionts, while the association between P. arhizus and P. pinaster seems to generally decrease the antioxidant effects of both symbionts, despite the increase in p-coumaric and cinnamic acids in the ECM fungi. 相似文献
54.
Striped hyenas (Hyaena hyaena L.) are one of the large carnivores whose numbers have rapidly decreased in Turkey. To monitor and assess the distribution of striped hyenas in Mediterranean region of Turkey, geographical information systems (GIS) and remote sensing technologies were implemented. For this purpose, the GIS database was generated and digital maps were produced in ArcGIS 9.2 program, considering some of the main factors including signs of striped hyenas, elevation, slope, land use types, feeding sources, and road network. The land use types in the distribution area of striped hyenas were classified by using ERDAS Imagine program. The results from the land use classification indicated that the signs of striped hyenas mostly distributed over the agricultural areas especially with olive groves, and followed by maquis. It was found that there was a spatial relationship between the signs of striped hyenas and feeding sources such as organic waste centers and a chicken farm in the region. 相似文献
55.
Lopes Géssica de Oliveira Aragão Walessa Alana Bragança Nascimento Priscila Cunha Bittencourt Leonardo Oliveira Oliveira Ana Carolina Alves Leão Luana Ketlen Reis Alves-Júnior Sergio Melo Pinheiro João de Jesus Viana Crespo-Lopez Maria Elena Lima Rafael Rodrigues 《Environmental science and pollution research international》2021,28(9):10918-10930
Environmental Science and Pollution Research - This study aimed to investigate the effects of lead (Pb) exposure on parotid and submandibular glands through morphological aspects as well as the... 相似文献
56.
57.
A. P. Reis C. Patinha Y. Noack S. Robert A. C. Dias 《Environmental geochemistry and health》2014,36(2):303-317
The Western part of the “Bassin Minier de Provence”, a former coal mining area, is still occupied by old polluting industries such as a coal-fired power plant and an alumina factory. The identified pollution sources that raise more concern in the population are the emission of gases and dusts, as well as the storage of raw and transformed materials. In 2011, a preliminary survey was carried out in the area as the first step to an exposure and health risk-assessment study. This first survey intends to assess human exposure through ingestion and health risk associated with potentially harmful elements (PHEs) in ground-level dusts collected in recreational areas used by children. Dust samples were taken at 19 sites distributed across the study area, depending on the location of public parks, public gardens, playgrounds and schools. Pseudo-total concentrations of 53 elements were determined by ICP-MS. Bioaccessible concentrations were estimated using the unified bioaccessibility method. This study presents the results obtained for Al, V and Cr, which seem to be related with industry and show similar distribution patterns. PHEs presumably related to traffic or other urban pollution sources are not discussed in this study. The highest total concentrations occur in dusts near the alumina plant that have significant amounts of Al mineral phases (gibbsite and alumina). However, in these dusts only small fractions of the elements under study are in bioaccessible forms. The highest bioaccessible fractions occur in dusts collected near the coal-fired power plant. Further investigation is required to assess potential pathways of exposure and health risk in this area. 相似文献
58.
Yilmaz K Inac S Dikici H Reyhanli AC 《Journal of environmental biology / Academy of Environmental Biology, India》2004,25(4):423-429
This study was carried out to determine the possible effects of the Afsin-Elbistan Coal Power Plant (AECPP) on the environment.. The soil and plant samples were collected, based on the dominant wind direction, which is from northeast to southwest and we defined the northeast part of the plant as the less contaminated direction (LCD) and the southwest part as the more contaminated direction (MCD). The results indicated that the AECPP created environmental problems and caused contaminations especially in the MCD. The results of the statistical analysis for the measured attributes between the LCD and the MCD showed that there were significant differences for pH, SO4(-2)-S, Ni and Pb. Significant correlations were found between the distance from the AECPP and some of the measured soil and plant parameters in the MCD. The concentrations of SO4(-2)-S, Ni and Pb decreased as the distance increased. The discharge water carries a potential risk for the aquatic life and soil health in the area. The honey quality was also affected negatively by fly ash and emission. 相似文献
59.
Inac S Gorucu O 《Journal of environmental biology / Academy of Environmental Biology, India》2002,23(2):169-173
Gavur Lake, takes place on the Saghk Plain in the south of Turkoglu subprovince in Kahramanmaras, was one of the most important places, that was available in the past time, south of our homeland. Gavur Lake represents the northest point of the bird immigration route that extends to Victoria Lake in Africa together with Emen and Amik Lakes dried locate on more south. Gavur Lake had been dried because of the some reasons those were being the marsh inn time by without oxygen cycle and emerging the situation of the microorganisms those were big threat for human health and to provide land in 1950's for the people of immigrants in Turkoglu. Presently, the big part of the Gavur Lake has dried. Drying activities are continuing. Whereas, Gavur Lake have all the conditions of the Ramsar Accord. With the improving of the Turkoglu reed bed the local people will earn more money by tourism than agricultural. Otherwise, the future of the Gavur Lake is going to be like Amik Lake. 相似文献
60.
Michael Howes Peter Tangney Kimberley Reis Deanna Grant-Smith Michael Heazle Karyn Bosomworth 《Journal of Environmental Planning and Management》2015,58(5):757-776
Major disasters, such as bushfires or floods, place significant stress on scarce public resources. Climate change is likely to exacerbate this stress. An integrated approach to disaster risk management (DRM) and climate change adaptation (CCA) could reduce the stress by encouraging the more efficient use of pooled resources and expertise. A comparative analysis of three extreme climate-related events that occurred in Australia between 2009 and 2011 indicated that a strategy to improve interagency communication and collaboration would be a key factor in this type of policy/planning integration. These findings are in accord with the concepts of Joined-up Government and Network Governance. Five key reforms are proposed: developing a shared policy vision; adopting multi-level planning; integrating legislation; networking organisations; and establishing cooperative funding. These reforms are examined with reference to the related research literature in order to identify potential problems associated with their implementation. The findings are relevant for public policy generally but are particularly useful for CCA and DRM. 相似文献