排序方式: 共有36条查询结果,搜索用时 187 毫秒
31.
Teillard Félix Doyen Luc Dross Camille Jiguet Frédéric Tichit Muriel 《Regional Environmental Change》2017,17(5):1397-1408
Regional Environmental Change - Reconciling biodiversity conservation and food production may require the fine-tuning of both agricultural intensity and its spatial allocation. Here, we explored... 相似文献
32.
Establishing A Earth Observation Product Service For The Terrestrial Carbon Community: The Globcarbon Initiative 总被引:3,自引:0,他引:3
Stephen Plummer Olivier Arino Muriel Simon Will Steffen 《Mitigation and Adaptation Strategies for Global Change》2006,11(1):97-111
'Greenhouse gases', especially carbon dioxide, are intimately connected to climate change. To understand the future evolution
of the climate system and find ways to manage the concentration of atmospheric carbon dioxide, the processes and feedbacks
that drive the carbon cycle must first be understood. However, our current knowledge of spatial and temporal patterns is uncertain,
particularly over land and in regions of potentially high sensitivity to change like the boreal zone. The European Space Agency
(ESA) GLOBCARBON project aims to generate fully calibrated estimates of at-land products quasi-independent of the original
Earth Observation source for use primarily in Dynamic Global Vegetation Models, but also as a contribution to the Global Carbon
Project, a cooperation between the International Geosphere Biosphere Programme, International Human Dimensions Programme and
the World Climate Research Programme to aid understanding of global carbon cycling. The service will feature estimation of
global burned area, the fraction of absorbed photosynthetically active radiation (fAPAR), leaf area index (LAI) and Vegetation Growth Cycle. The demonstrator will focus on ten complete years, from 1998 to 2007
when overlap exists between ESA Earth Observation sensors and others that are synergistic. However, the system will be flexible
so that it is not dependent on any single satellite sensor and therefore can be retrospectively applied to existing archives
and used with future satellite sensors. 相似文献
33.
Youssef Filali-Meknassi Muriel Auriol Craig D Adams Rao Y Surampalli 《Water environment research》2007,79(6):687-696
In this study, the occurrence of trace amounts of natural and synthetic steroid estrogens in the aquatic environment was studied using liquid chromatography coupled with electrospray mass spectrometry, following solid-phase extraction (SPE). The SPE was performed with C18 and NH2 cartridges. The first objective was to develop a reliable method for analyzing steroid estrogens (resulting from human and animal excretions) in different matrices. The method developed was then applied to quantify the occurrence of natural and synthetic hormones (estrone [E1], 17beta-estradiol [betaE2], 17alpha-estradiol [alphaE2], estriol [E3], and 17alpha-ethinylestradiol [EE2]) in environmental samples in surface water and wastewater treatment plant (WWTP) influent and effluent. In the WWTP influents, betaE2, alphaE2, and E3 were identified as ranging up to 72.6 ng/L in WWTP influent and to 16 ng/L in WWTP effluent. Analysis o f surface wa ter sampled upstream from the WWTP revealed the presence of all five estrogens, at levels up to 19.8 ng/L. These concentrations of estrogens pose an issue for large and small communities, because they are higher than the recommended guidelines for estrogen-active compounds and because a lot of communities use surface water as drinking-water sources. 相似文献
34.
Salima Machkour-MRabet Yann Hénaut Pierre Charruau Muriel Gevrey Peter Winterton Luc Legal 《Marine Biology》2009,156(6):1321-1333
Habitat loss and degradation in the Mexican Caribbean, caused by the development of tourism, have decreased the potential
nesting area for the American crocodile (Crocodylus acutus) and have fragmented the populations of the Yucatan peninsula. Our study investigated five populations (three continental:
North, South, Sian Ka’an, and two insular: Cozumel, Banco Chinchorro) of C. acutus in the Mexican Caribbean using seven different inter simple sequence repeat (ISSR) markers as tools for genetic variability
and population differentiation. Three classification methods were tested and compared: distance analysis, self-organizing
map, and Bayesian methods, to evaluate the resolution of each method with ISSR markers. The 77 loci selected revealed a high
variability between populations (polymorphism from 17% for Sian Ka’an to 75% for Banco Chinchorro) with a total polymorphism
of 84% and a global coefficient of gene differentiation (G
ST
) of 0.296, but low values of Nei’s Gene diversity (from 0.065 for Sian Ka’an to 0.233 for Banco Chinchorro). Our results
suggest elevated inbreeding in all local populations with higher indices for Banco Chinchorro and lower indices for Sian Ka’an.
Three independent classification methods gave similar results, and suggested that most continental individuals are admixtures,
with different levels of introgression, with the sympatric species Crocodylus moreletii. We propose that the islands/atolls remain the sole areas with genetically “pure” American crocodiles and we discuss these
results for future conservation of this endangered crocodile species. 相似文献
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36.
Ofei-Quartey Muriel Naa Lamiokor Appiah-Effah Eugene Akodwaa-Boadi Kofi Ampaw Barnabas Taylor Theodora Sophia Millogo Zouma Emeline Nadège 《Journal of Material Cycles and Waste Management》2023,25(3):1560-1580
Journal of Material Cycles and Waste Management - Co-composting, a circular economy approach to waste management, has economic potential and environmental benefits through nutrient recycling and... 相似文献