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Vizuete Jorge Hernández-Moreno David López-Beceiro Ana Fidalgo Luis Eusebio Soler Francisco Pérez-López Marcos Míguez-Santiyán María Prado 《Environmental science and pollution research international》2022,29(36):54292-54308
Environmental Science and Pollution Research - In the present study, mercury (Hg), cadmium (Cd), lead (Pb), selenium (Se), and arsenic (As) were measured in liver, kidney, and feathers of adult,... 相似文献
333.
Roethlin Remo Luis Gilli Adrian Wehrli Bernhard Gilli Robin Sue Wiederhold Jan Georg Dubois Nathalie 《Environmental science and pollution research international》2022,29(57):85789-85801
Environmental Science and Pollution Research - Historical industrial activities at the Horn Richterwil, on the shore of Lake Zurich (Switzerland), caused widespread metal contamination on land and... 相似文献
334.
Luis Gimeno Modesto Sánchez Emiliano Hernández Luis Cana 《Journal of the Air & Waste Management Association (1995)》2013,63(7):811-815
Abstract A multiple regression model was used to describe temporal variations of the concentrations of H+, SO4 2 -, NO3 - and NH4 + in Spanish rainwater. The model included the effects of linear trend, annual cycle, and precipitation quantity simultaneously. The model fit very well for SO4 2 - and NO3 -, with statistical evidence of annual cycle and effect of precipitation quantity for these two ions and for NH4 +, but not for H+. There is no trend for any ion, with the single exception of a decreasing trend for H+ in one of the stations used. 相似文献
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Sampaio Emanuel F. S. Rodrigues Carmen S. D. Lima Vanessa N. Madeira Luis M. 《Environmental science and pollution research international》2021,28(6):6437-6449
Environmental Science and Pollution Research - The present study assesses the treatability of a real industrial wastewater (WW) with a high organic load (chemical oxygen demand (COD) above 5800... 相似文献
338.
This research addresses the need to improve our knowledge on the demand for national forests for recreation and offers an in-depth data analysis supported by the complementary use of count data and ordered models. From a policy-making perspective, while count data models enable the estimation of monetary welfare measures, ordered models allow for the wider use of the database and provide a more flexible analysis of data. The main purpose of this article is to analyse the individual forest recreation demand and to derive a measure of its current use value. To allow a more complete analysis of the forest recreation demand structure the econometric approach supplements the use of count data models with ordered category models using data obtained by means of an on-site survey in the Bussaco National Forest (Portugal). Overall, both models reveal that travel cost and substitute prices are important explanatory variables, visits are a normal good and demographic variables seem to have no influence on demand. In particular, estimated price and income elasticities of demand are quite low. Accordingly, it is possible to argue that travel cost (price) in isolation may be expected to have a low impact on visitation levels. 相似文献
339.
Jordi Figuerola Iris Charalambidou Luis Santamaria Andy J. Green 《Die Naturwissenschaften》2010,97(6):555-565
Long distance dispersal may have important consequences for gene flow and community structure. The dispersal of many plants
depends on transport by vertebrate seed dispersers. The shapes of seed shadows produced by vertebrates depend both on movement
patterns of the dispersers and on the dynamics and effects of passage through the disperser’s gut (i.e. the retention time,
survival and germination of ingested seeds). A combination of experiments with captive waterbirds and aquatic plant seeds
was used to analyse the following: (a) the effects of inter- and intra-specific variation in seed size and duck species on
seed retention time in the gut and (b) the relationship between retention time and the percent germination and germination
rates of seeds. Among the three Scirpus species used, those with smaller seeds showed higher survival after ingestion by birds and longer retention times inside
their guts than those with larger seeds. For Potamogeton pectinatus, only seeds from the smaller size class (<8 mg) survived ingestion. Retention time affected the percent germination and germination
rate of Scirpus seeds but in a manner that varied for the different plant and bird species studied. We recorded both linear and non-linear
effects of retention time on percent germination. In addition, germination rate was positively correlated with retention time
in Scirpus litoralis but negatively correlated in Scirpus lacustris. Small seed size can favour dispersal over larger distances. However, the effects of retention time on percent germination
can modify the seed shadows produced by birds due to higher percent germination of seeds retained for short or intermediate
periods. The changes in dispersal quality associated with dispersal distance (which is expected to be positively related to
retention time) will affect the probability of seedling establishment over longer distances and, thus, the spatial characteristics
of the effective seed shadow. 相似文献