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91.
Leal Filho Walter Price Elizabeth Wall Tony Shiel Chris Azeiteiro Ulisses M. Mifsud Mark Brandli Luciana Farinha Carla Sofia Caeiro Sandra Salvia Amanda Lange Vasconcelos Claudio Ruy de Sousa Luiza Olim Pace Paul Doni Federica Veiga Avila Lucas Fritzen Bárbara LeVasseur Todd Jared 《Environment, Development and Sustainability》2021,23(8):11257-11278
Environment, Development and Sustainability - The COVID-19 pandemic has caused a global crisis, one which also influences the ways sustainability is being taught at universities. This paper... 相似文献
92.
Francisco W. Sousa André G. Oliveira Jefferson P. Ribeiro Morsyleide F. Rosa Denis Keukeleire Ronaldo F. Nascimento 《Journal of environmental management》2010,91(8):1634-1640
This study applies green coconut shells as adsorbent for the removal of toxic metal ions from aqueous effluents using column adsorption. The results show that a flow rate of 2 mL/min and a bed height of 10 cm are most feasible. Furthermore, larger amounts of effluent can be treated for removal of single ions. The breakthrough curves for multiple elements gave the order of adsorption capacity: Cu+2 > Pb+2 > Cd+2 > Zn+2 > Ni+2. Real samples arising from the electroplating industry can be efficiently handled. 相似文献
93.
Virginia Alves Martins Maria Cazelli Lucas Yhasnara Missilene da CristineSilva Layla Barros Saibro Murilo Bobco Fabia Emanuela Rafaloski Rubio Belen Ferreira Bruna Castelo Wellen Fernanda Louzada Santos José Francisco Ribeiro Sara Frontalini Fabrizio Martínez-Colón Michael Pereira Egberto Antonioli Luzia Geraldes Mauro Rocha Fernando Sousa Silvia Helena Mello e Manuel Alveirinho Dias João 《Environmental science and pollution research international》2022,29(46):69652-69679
Environmental Science and Pollution Research - We analyze potential Late Holocene metal contamination along a sediment core collected in the distal zone of Ria de Vigo (North Spain). Statistical... 相似文献
94.
Miguel A. Ramos Nadine R. Sousa Albina R. Franco Vítor Costa Rui S. Oliveira Paula M. L. Castro 《Environmental science and pollution research international》2013,20(1):582-590
Diflubenzuron (DFB) is an insecticide commonly used to control forest pests. The objectives of this study were to assess the effect of diflubenzuron on the development of Pinus pinaster seedlings and Pisolithus tinctorius under laboratory conditions and to study the possible protective role of this ectomycorrhizal fungus against the effects of diflubenzuron. In vitro experiments revealed that diflubenzuron inhibited fungal growth at all tested concentrations (0.01, 0.1, 1, 10 and 100 mg L?1). Root growth was inhibited at the two highest diflubenzuron concentrations. The activity of the antioxidant defence system of non-inoculated P. pinaster increased at 1 and 10 mg DFB kg?1 substrate, and inoculation increased the threshold to the highest concentration. The protective role of the ectomycorrhizal fungus was seen in the increase of CAT activity. This study revealed that despite causing no mortality, diflubenzuron has the ability to cause sub-lethal damage to P. pinaster. The disproportionate use of this insecticide may lead to higher amounts of its residues in soil and the biosphere, endangering trees, fungi and their symbiosis. 相似文献
95.
Integrated Coastal Zone Management (ICZM): a review of progress in Portuguese implementation 总被引:1,自引:0,他引:1
F. L. Alves L. P. Sousa M. Almodovar M. R. Phillips 《Regional Environmental Change》2013,13(5):1031-1042
Coastal areas are the focus of intensive urbanisation and tourism and are subject to changing physical processes causing significant natural environment modifications. It is in this context that the European Commission (EC) developed the Integrated Coastal Zone Management (ICZM) Recommendation and invited coastal Member States to produce national implementation strategies. Its general aim of sustainable coastal development was based on policy integration in cooperation with all stakeholders in an informed and participatory context. Portugal responded to the EC request by creating, approving, and adopting the national ICZM strategy. This paper focuses on Portuguese experiences putting the ICZM recommendation into practice and begins with a brief overview of community guidelines, national legislation, and implementation. Subsequently, governance mechanisms are discussed and best practice identified. From an assessment of Portuguese ICZM progress and lessons learned, conclusions and recommendations for improved effectiveness included: strengthening governance; improving sustainable decision-making processes supported by technical and scientific knowledge; and securing financial sustainability. 相似文献
96.
97.
Footprint secretions deposited at the nest entrance or on food sources are used for chemical communication by honey bees, bumble bees, and stingless bees. The question of the glandular origin of the substances involved, however, has not been unequivocally answered yet. We investigated the morphology and structure of tarsal glands within the fifth tarsomeres of the legs of workers of Melipona seminigra in order to clarify their possible role in the secretion of footprints. The tarsal gland is a sac-like fold forming a reservoir. Its glandular tissue is composed of a unicellular layer of specialized epidermal cells, which cover the thin cuticular intima forming the reservoir. We found that the tarsal glands lack any openings to the outside and therefore conclude that they are not involved in the secretion of footprint substances. The secretion produced accumulates within the glands reservoir and reaches as far as into the arolium. Thus it is likely that it serves to fill and unfold the arolium during walking to increase adhesion on smooth surfaces, as is known for honey bees and weaver ants. 相似文献
98.
The hydrogeochemical characterization of Coxilha das Lombas Aquifer, Brazil, was studied. Chemical characteristics from 23
groundwater samples and meteoric waters data from public registers were used. The ionic speciation and mineral dissolution/precipitation
was calculated by EQ3/6 package software. The results showed low total dissolved solids (TDS) values and slightly acidic pH.
The concentration of most abundant ions usually followed this trend Cl−>HCO3
+>SO4
2−>Na+. The characteristics of groundwaters and the chemistry similarity with the meteoric waters reflect their short residence
time, due to high hydraulic conductivity, and low degree of water/rock interactions, due to sands composed mainly of quartz. 相似文献
99.
Razote E Jeon I Maghirang R Chobpattana W 《Journal of environmental science and health. Part. B》2002,37(4):365-378
A new dynamic air sampling system was devised and evaluated in conjunction with solid phase microextraction (SPME) fiber materials for extracting odor-causing volatile organic compounds (VOCs) present in swine building environments. Utilizing a standard solution consisting of 11 compounds (i.e., volatile fatty acids, indoles, and phenol), sampling times, volumes, and flow rates were adjusted to establish optimal extraction conditions. Results indicated that the sampling system was effective with the Carboxen/Polydimethylsiloxane (CAR/PDMS) fiber in extracting all 11 standard compounds. The best sampling conditions for the extraction were a 100-mL sampling vial subjected to a continuous flow of 100 mL/min for 60 min. The gas chromatographic analysis showed that the reproducibility was within acceptable ranges for all compounds (RSD=4.24-17.26% by peak areas). In addition, field tests revealed that the sampling system was capable of detecting over 60 VOCs in a swine house whose major components were identified by gas chromatography-mass spectrometry (GC-MS) and by their retention times as volatile fatty acids, phenols, indole, and skatole. The field tests also showed that considerably different levels of VOCs were present in various parts of the swine building. 相似文献
100.
Ivelize C. Tannure-Nascimento Fabio S. Nascimento José O. Dantas Ronaldo Zucchi 《Die Naturwissenschaften》2009,96(7):857-861
The capacity to distinguish colony members from strangers is a key component in social life. In social insects, this extends
to the brood and involves discrimination of queen eggs. Chemical substances communicate colony affiliation for both adults
and brood; thus, in theory, all colony members should be able to recognize fellow nestmates. In this study, we investigate
the ability of Dinoponera quadriceps workers to discriminate nestmate and non-nestmate eggs based on cuticular hydrocarbon composition. We analyzed whether cuticular
hydrocarbons present on the eggs provide cues of discrimination. The results show that egg recognition in D. quadriceps is related to both age and the functional role of workers. Brood care workers were able to distinguish nestmate from non-nestmate
eggs, while callow and forager workers were unable to do so.
Electronic supplementary material The online version of this article (doi:) contains supplementary material, which is available to authorized users. 相似文献