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61.
Anthocyanins and tannins in ozone-fumigated guava trees 总被引:1,自引:0,他引:1
Psidium guajava “Paluma”, a tropical tree species, is known to be an efficient ozone indicator in tropical countries. When exposed to ozone, this species displays a characteristic leaf injury identified by inter-veinal red stippling on adaxial leaf surfaces. Following 30 days of three ozone treatments consisting of carbon filtered air (CF – AOT40 = 17 ppb h), ambient non-filtered air (NF – AOT40 = 542 ppb h) and ambient non-filtered air + 40 ppb ozone (NF + O3 – AOT40 = 7802 ppb h), the amounts of residual anthocyanins and tannins present in 10 P. guajava (“Paluma”) saplings were quantified. Higher amounts of anthocyanins were found in the NF + O3 treatment (1.6%) when compared to the CF (0.97%) and NF (1.30%) (p < 0.05), and of total tannins in the NF + O3 treatment (0.16%) compared to the CF (0.14%). Condensed tannins showed the same tendency as enhanced amounts. Regression analyses using amounts of tannins and anthocyanins, AOT40 and the leaf injury index (LII), showed a correlation between the leaf injury index and quantities of anthocyanins and total tannins. These results are in accordance with the association between the incidence of red-stippled leaves and ozone polluted environments. 相似文献
62.
Valéria R. F. da Silva Sylvia F. Mitraud Maria L. C. P. Ferraz Eduardo H. S. M. Lima Maria Thereza D. Melo Armando J. B. Santos Augusto César C. D. da Silva Jaqueline C. de Castilhos Jamyle A. F. Batista Gustave G. Lopez Frederico Tognin João Carlos Thomé Cecília Baptistotte Berenice M. Gomes da Silva José Henrique Becker Juçara Wanderline Fernanda de Vasconcellos Pegas Gonzalo Róstan Guy Guagni dei Marcovaldi Maria Ângela G. dei Marcovaldi 《Environment, Development and Sustainability》2016,18(6):1541-1558
In the 35 years since its inception, the Brazilian National Program for the Conservation of Marine Turtles (TAMAR) has had great success in protecting the five species of sea turtles that occur in Brazil. It has also contributed significantly to worldwide scientific data and knowledge about these species’ biology, such as life cycles and migration patterns. TAMAR’s conservation strategies have always relied on a variety of environmental education and social inclusion (EESI) activities highly adapted to the socio-environmental evolving contexts of its 25 locations distributed across nine states. Diversity and flexibility are critical to enable timely and effective local responses to existing or potential threats to sea turtles. The intuitive, locally adapted, decentralized, and independent way EESI activities have been carried out have generated positive results in the resolution of specific and evolving local problems through the course of the project. This article brings EESI under the same conceptual framework that underlies its conservation approach by adopting an adaptive threat management framework to organize and qualify its educational and social inclusion interventions according to the main categories of threat addressed by TAMAR. 相似文献
63.
Albatrosses and petrels (Procellariiformes) are migratory oceanic birds of considerable conservational interest. Polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) were assessed in the subcutaneous fat, liver and muscle of 100 birds belonging to eight species of Procellariiformes collected during their migration period in southern Brazil, one of the most important feeding areas for these species. Although the profiles of PCBs and OCPs were similar among the individuals, with predominance of penta, hexa and heptachlorobiphenyls and p′p-DDE, organochlorine concentrations exhibited a high degree of intra-species variability. The influence of body condition during the migration period in the distribution of organochlorine contaminants was also evaluated, showing that it is a significant factor in the variation and redistribution of these compounds in the tissues of these birds. The intense use of lipid reserves associated to the contamination from organochlorine compounds could be a troubling factor for seabirds with extended breeding periods and that spend most of their lives at sea migrating long distances, such as most of Procellariiformes. Studies on contamination are necessary to improve the knowledge of the threats to these birds and their populations as well as to contribute with information about persistent organic pollutants in the South Atlantic marine environment. 相似文献
64.
Paes FA Hissa DC Angelim AL Pinto NW Grangeiro TB Melo VM 《Water environment research》2012,84(3):274-281
This paper describes the phenotypic and genotypic diversity of a Gram-positive, aerobic bacterial population isolated from the chlorine tank of a wastewater treatment plant. A total of 12 sporeforming, rod-shaped isolates were identified using 16S rRNA gene sequencing and biochemical tests. Pairwise genetic comparisons revealed the identity among sequences obtained from isolates varied from 92.6 to 100%. Similarity searches on GenBank showed that five strains were closely related (99 to 100% identity) to Bacillus subtilis and two were almost identical (99%) to B. megaterium and B. licheniformis. Because the five remaining strains were either closely related (97 to 99% identity) or identical to B. cereus, B. thuringiensis, and B. anthracis, they were classified as belonging to the B. cereus group. Apart from one strain, all clades in the phylogenetic tree were identical to clusters formed in the dendrogram based on biochemical tests results. According to the biochemical profiles, all isolates were characterized as different strains. In addition to chlorine resistance, all isolates were found to be resistant to at least one of five antibiotics tested. These results identify the potential risk of spreading antibiotic resistance genes in the environment by chlorine-resistant strains of Bacillus. 相似文献
65.
Grassi Patrícia Drumm Fernanda Caroline Georgin Jordana Franco Dison Stracke Pfingsten Dotto Guilherme Luiz Foletto Edson Luiz Jahn Sérgio Luiz 《Environmental science and pollution research international》2021,28(6):6771-6783
Environmental Science and Pollution Research - In this work, for the first time, Cordia trichotoma sawdust, a residue derived from noble wood processing, was applied as an alternative biosorbent... 相似文献
66.
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
67.
Geographical Range Size and the Conservation of Mexican Mammals 总被引:2,自引:0,他引:2
Héctor T. Arita Fernanda Figueroa Astrid Frisch Pilar Rodríguez & Karina Santos-Del-Prado 《Conservation biology》1997,11(1):92-100
Range was estimated for the 423 noninsular mammals of Mexico to identify those species with more restricted distributions and to detect priority areas for conservation based on the presence of such species. Thirty-eight percent of nonvolant mammals and 15.4% of bats are restricted in Mexico to areas of less than 114,000 km2 . Restricted species were defined as those occurring in ranges smaller than the median for bats and for nonvolant species. Following this criterion, most nonvolant species with restricted distribution in Mexico are either endemic to the country or are shared with the United States, whereas endemic chiropteran species are few, and most Mexican bats with restricted distribution also occur in South America. Nonvolant mammals with restricted distribution in Mexico tend to be of small body size, herbivore or granivore, and fossorial or semifossorial. Among bats, gleaners are significantly more restricted than aerial insectivores. Species with restricted distribution are inadequately represented in the current official list of endangered species, particularly in the case of nonvolant mammals. Similarly, some areas of Mexico that harbor several species with restricted distribution are not represented in the Mexican system of protected areas. Therefore, rarity, in this case measured by the area of distribution, should be included as an additional criterion for conservation of the Mexican mammal fauna. 相似文献
68.
Jennifer Griffiths Megan N. Dethier Amanda Newsom James E. Byers John J. Meyer Fernanda Oyarzun Hunter Lenihan 《Marine Biology》2006,149(6):1489-1497
Marine reserves can help in maintaining biodiversity and potentially be useful as a fishery management tool by removing human-mediated impacts. Intertidal, soft-sediment habitats can often support robust recreational and commercial shellfish harvests, especially for clams; however, there is limited research on the effects of reserves in these habitats. In San Juan County, Washington, several reserves prohibit recreational clam digging. We examined the effects of these reserves on infaunal community composition through comparison with non-reserve beaches during a 6-week period. Clam abundance, overall species richness and total polychaete family richness were greater on reserve beaches compared to non-reserve beaches. Additionally, an experiment within a reserve demonstrated negative impacts of digging on non-target infauna. These effects probably resulted from local disruption and disturbance of the sediment habitat and not from increased post-digging predation, which was controlled. Intertidal reserves could play an important role in sustaining local and potentially regional biodiversity. 相似文献
69.
Diane Van Opstal Geerke M. Eggenhuizen Marieke Joosten Karin Diderich Lutgarde Govaerts Robert-Jan Galjaard Attie Go Maarten Knapen Marjan Boter Wai Y. Cheung Nicole van Koetsveld Stefanie van Veen Walter G. de Valk Fernanda Jehee Femke de Vries Iris Hollink Lies Hoefsloot Malgorzata Srebniak 《黑龙江环境通报》2020,40(10):1338-1342
70.
Treatment of effluent from re‐refined lubricating oils by combined processes of coagulation,flocculation, and Fenton process 下载免费PDF全文
Lucas Pisoni da Silva Silvio Roberto Taffarel Fernanda Rosa da Silveira Fagner Tafarel Campos de Sá Luís Felipe Silva Oliveira 《环境质量管理》2018,27(4):135-141
This work examines the possibility and the potential application of physicochemical processes (coagulation and flocculation) and advanced oxidative processes (Fenton Process) in the treatment of effluents from the re‐refining of used lubricating oils. 相似文献