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151.
Severo Amanda M. C. Nicácio Pedro H. M. Fook Marcus Vinícius Lia Wellen Renate M. R. 《Journal of Polymers and the Environment》2022,30(9):4014-4022
Journal of Polymers and the Environment - Epoxidized soybean oil (ESO) compounds were cured with methyl tetrahydrophthalic anhydride (MTHPA) as hardener and 2,4,6-tris (dimethylaminomethyl) phenol... 相似文献
152.
Ding Yufan Redol Pedro Angelini Emma Mirão José Schiavon Nick 《Environmental science and pollution research international》2022,29(20):29467-29477
Environmental Science and Pollution Research - Samples of orange patinas found on a limestone window tracery and an ornament of the Batalha Monastery have been investigated by X-ray... 相似文献
153.
Pitchamani Godwyn-Paulson Ponniah Jonathan Muthuswamy Rodríguez-Espinosa Pedro Francisco Roy Priyadarsi Debajyoti Sánchez-Núñez Juan Manuel Villegas Lorena Elizabeth Campos Rodríguez-González Francisco Márquez-Herrera Ciro Eliseo 《Environmental science and pollution research international》2022,29(41):61698-61710
Environmental Science and Pollution Research - The vertical distribution pattern and concentrations of elements (Fe, Al, Ca, Mg, Mn, Cr, Cu, Ni, Co, Pb, Zn, and As) in the estuarine and lagoon... 相似文献
154.
Recently, analytical approaches based on the eigenfunctions of spatial configuration matrices have been proposed in order to consider explicitly spatial predictors. The present study demonstrates the usefulness of eigenfunctions in spatial modeling applied to ecological problems and shows equivalencies of and differences between the two current implementations of this methodology. The two approaches in this category are the distance-based (DB) eigenvector maps proposed by P. Legendre and his colleagues, and spatial filtering based upon geographic connectivity matrices (i.e., topology-based; CB) developed by D. A. Griffith and his colleagues. In both cases, the goal is to create spatial predictors that can be easily incorporated into conventional regression models. One important advantage of these two approaches over any other spatial approach is that they provide a flexible tool that allows the full range of general and generalized linear modeling theory to be applied to ecological and geographical problems in the presence of nonzero spatial autocorrelation. 相似文献
155.
Juan Manuel López-García Hugues-Alexandre Blain Ethel Allué Sandra Bañuls Amelia Bargalló Patricia Martín Juan Ignacio Morales Mireia Pedro Anna Rodríguez Alex Solé F. Xavier Oms 《Die Naturwissenschaften》2010,97(8):753-761
A refugium is generally understood as an area where temperate species survive cold periods, such as the Iberian, Italian, or Balkan Peninsulas in Europe. Strictly speaking, this definition refers to what is known as a glacial refugium. However, there are various types of lesser-known refugia such as the interglacial refugium, which denotes a mountainous region at low latitudes, such as the Pyrenees, where species adapted to the cold survive during interstadial periods. The small-vertebrate association from the sequence of Cova Colomera, which is located on the southern face of the Pyrenees and contains the final cold spell of the Late Pleistocene and the beginnings of the temperate period in which we currently find ourselves (the Holocene), could constitute the first fossil evidence of such an interglacial refugium, thus providing new paleoecological data on the phenomenon. 相似文献
156.
Pedro Simões 《Resources, Conservation and Recycling》2011,55(7):695-702
The urban waste treatment service has been a sensitive issue for the Portuguese governments in the past decades. Among other measures, the environmental and economical issues led to the creation of a sector-specific regulator for the waste sector. Considering this atypical circumstance in the worldwide context it is worth studying the external factors that may influence the waste utilities efficiency along with the regulation role. In this regard, we applied the parametric approach of the stochastic frontier analysis to evaluate the influence of the operational environment on the urban waste services performance. The sample included 32 utilities responsible for the waste treatment service in Portugal. The results showed a negative influence of factors, such as the existence of regulation, the distance to the waste treatment facilities and the provision of other services on utility performance. We also observed some benefits from privatisation and incineration, although these options have some particular features. 相似文献
157.
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
158.
Delgado-Alvarez Carolina Guadalupe Ruelas-Inzunza Jorge Osuna-Martínez Carmen Cristina Bergés-Tiznado Magdalena Elizabeth Escobar-Sánchez Ofelia Ocampo-Rodríguez Pedro Octavio Soto-Romero Karen Lizbeth Garzón-Raygoza Nancy Lorena Aguilar-Júarez Marisela Osuna-López José Isidro Frías-Espericueta Martín 《Environmental science and pollution research international》2021,28(9):10909-10917
Environmental Science and Pollution Research - Mercury and selenium concentrations and Se:Hg molar ratio in edible muscle and hepatopancreas of the crab Callinectes arcuatus from coastal lagoons of... 相似文献
159.
160.
Cristina Quintas-Soriano Dainee M. Gibson Jodi S. Brandt María D. Lpez-Rodríguez Javier Cabello Pedro A. Aguilera Antonio J. Castro 《Ambio》2021,50(1):150
Conservation easements are the fastest growing private conservation strategy in the United States. However, mechanisms to assess private land conservation as well as their support by the general public are not well understood. This study uses the ecosystem services framework for assessing existing private lands in Idaho and identifies areas for future conservation easements. Using conservation targets of the land trust as a guide for selecting ecosystem services, we (a) mapped the spatial delivery of conservation targets across public and private lands, (b) explored public awareness in terms of social importance and vulnerability, and (c) mapped future priority areas by characterizing conservation bundles. We found that public lands provided the highest levels of conservation targets, and we found no difference in conservation target provision between private areas and conservation easements. The spatial characterization of conservation target bundles identified potential future priority areas for conservation easements, which can guide planning of land trust conservation efforts.Electronic supplementary materialThe online version of this article (10.1007/s13280-020-01323-x) contains supplementary material, which is available to authorized users. 相似文献