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| Bizzo,Luís; Gottschalk,Marco S; Toni,Daniela C. De; Hofmann,Paulo R. P. |
| Drosophila Fallen, 1823 (Diptera, Drosophilidae) is for long a well-established model organism for genetics and evolutionary research. The ecology of these flies, however, has only recently been better studied. Recent papers show that Drosophila assemblies can be used as bioindicators of forested environment degradation. In this work the bioindicator potential of drosophilids was evaluated in a naturally opened environment, a coastal strand-forest (restinga). Data from nine consecutive seasonal collections revealed strong temporal fluctuation pattern of the majority of Drosophila species groups. Drosophila willistoni group was more abundant at autumns, whereas D. cardini and D. tripunctata groups were, respectively, expressive at winters and springs, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Drosophila; Seasonality; Bioindicators; Restinga; Brazil. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212010000300001 |
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| MENDES, I. de C.; CUNHA, M. H. da; REIS JUNIOR, F. B. dos; FERNANDES, M. F.; CHAER, G. M.; MERCANTE, F. M.; ZILLI, J. E.. |
| Desde 1998, além dos estudos de fixação biológica do nitrogênio e micorriza, o grupo de microbiologia do solo da Embrapa Cerrados iniciou suas pesquisas em ecologia microbiana de solos de Cerrado conseguindo avanços significativos na caracterização da biomassa, atividade e diversidade microbiana dos solos desse bioma. Existia, até então, um desconhecimento sobre as propriedades microbiológicas dos solos de Cerrado sob vegetação nativa, sobre os impactos de sistemas agrícolas no funcionamento dos processos microbiológicos desses solos e de suas consequências na manutenção, melhoria ou perda da qualidade dos mesmos, após sua incorporação à agricultura. Durante esses 11 anos, o grupo sempre esteve presente proferindo palestras nos mais importantes congressos... |
| Tipo: Documentos (INFOTECA-E) |
Palavras-chave: Qualidade do solo; Bioindicador; Tropical soil.; Bioindicators; Solo tropical; Soil quality.. |
| Ano: 2009 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/661591 |
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| Debenay, Jean-pierre; Tsakiridis, Erica; Soulard, René; Grossel, Hubert. |
| Port Joinville harbor is located on an island. Thus, it receives only a few freshwater inputs, contrary to most of the areas where the influence of pollution on foraminiferal assemblages has been studied. The pollution in the harbor mainly results from the boats, including cleaning, painting and outfall of oil and motor-fuel.A total of 59 sediment samples was collected at three sampling periods (November-December 1997, May 1998 and September 1998). These samplings were supplemented by the study of algal flora and macrobenthos and by the study of water circulation by means of six stations where water was collected every hour during a tide cycle. Contaminants were analyzed in the last series of 17 samples. Total assemblages were used for this study. This... |
| Tipo: Text |
Palavras-chave: France; Atlantic; Harbor; Pollution; Bioindicators; Foraminifera. |
| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/2001/publication-764.pdf |
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| Debenay, J.p.; Della Patrona, Luc; Herbland, Alain; Goguenheim, H. |
| This study was carried out in shrimp ponds from New Caledonia, in order to determine the cause of the exceptional proportion of abnormal tests (FAI) (often >50%, sometimes >80%). FAI was positively correlated to the quantity of easily oxidized material (EOM) deposited on the bottom of the ponds and to the sediment oxygen demand, and negatively correlated to redox. These results suggest that a very high FAI is a potential indicator for great accumulations of native organic matter, leading to a high sediment oxygen demand. When studying ancient sediments in core samples, exceptional abundances of abnormal tests may indicate periods of high accumulation of EOM, and therefore of oxygen depletion. This finding should help in better management of... |
| Tipo: Text |
Palavras-chave: SW Pacific; Bioindicators; Organic matter; Shrimp ponds; Deformations; Foraminifera. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-6955.pdf |
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| Cruz,Bruna Botti; Teshima,Fernanda Ayumi; Cetra,Mauricio. |
| Studies that investigate the relationship patterns between environmental structure complexity and fish fauna provide crucial information to stream restoration efforts. In order to test the hypothesis that streams with more complex environmental structure sustain more diverse and functionally more complex fish communities we sampled fish fauna from Sorocaba River headwater stream reaches (SE - Brazil). Reaches represented two distinct treatments: (1) a simplified reach, characterized by unstable fine substrate, clay, deeper channel and higher water velocity and (2) structurally complex reaches, characterized by coarse substrate, with gravel, pebble, rock, stems and branches and leaves inside the channel, producing a diverse pattern of microhabitat,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioindicators; Environmental heterogeneity; Functional group. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000100171 |
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| Essid, N.; Mahmoudi, E.; Beyrem, H.; Aissa, P.; Hedfi, A.. |
| The survey of sediment and hydrological parameters in the old harbor of Bizerte has revealed that this ecosystem knows a high anthropogenic pressure. In this area waters were characterized by weak contents in dissolved oxygen and sediments, rich in fine fraction, were loaded in hydrocarbons and in organic matter. The free-living nematodes, predominant taxa, responded to these disturbances by a significant decrease in their densities and their biomasses and had tendency, notably at the most isolated sites, to penetrate deeply to escape surface sediments highly loaded in hydrocarbons and in organic matter. |
| Tipo: Journal Contribution |
Palavras-chave: Hydrocarbons; Pollution effects; Pollution indicators; Meiobenthos; Harbours; Man-induced effects; Bioindicators; Hydrocarbons; Http://aims.fao.org/aos/agrovoc/c_3719. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/1115 |
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| Suárez,Leonardo Rodríguez; Josa,Yuli Tatiana Paladines; Samboni,Erika Judith Astudillo; Cifuentes,Karla Dayana Lopez; Bautista,Ervin Humprey Durán; Salazar,Juan Carlos Suárez. |
| Abstract: The objective of this work was to evaluate the soil macrofauna and the bioindicator taxonomic groups associated with different land uses in the Colombian Amazon. Twelve agroforestry arrangements were studied and compared with to the native forest and pasture. For each land use, six monoliths were randomly selected and divided into four layers (litter, and 0-10, 10-20, and 20-30 cm soil depths). The variables considered in the analysis of land use effects were: individuals per square meter, order richness, Shannon’s diversity index, and Pielou’s evenness index. The greatest values for soil macrofauna density and diversity occurred in the forest, in contrast with the pasture. The principal component analysis distinguished land use according to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agroforestry systems; Bioindicators; Richness; Soil macrofauna. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018001201383 |
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| Assis,Valéria Cristina Barbosa de; Chagas,Pedro Guedes; Marinho,Cidália Gabriela Santos; Fadini,Marcos Antônio Matiello; Delabie,Jacques Hubert Charles; Mendes,Simone Martins. |
| Abstract: The objective of this work was to survey soil ants in Bt and non-Bt maize (Zea mays) crops, and to compare their effect on the soil ant community. Nine pitfall traps, 10 m apart, were installed in a central area (900 m2) of each of the following treatments (2,500 m2): conventional maize; maize modified with the Cry1F, Cry1Ab, and Vip3A proteins; and a native vegetation area. Fortnightly collections were conducted during four periods (complete producing cycles) of the crop, from 2011 to 2013. The number of ant species varied from 25 in Bt maize (Vip 3A) to 58 in Bt maize (Cry 1F). The treatment with conventional maize showed the highest Shannon-Wiener diversity index (H’ = 2.60). Jaccard’s index showed that there is dissimilarity between the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; Bioindicators; Formicidae; Myrmicinae; Nontarget arthropods; Soil biology. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000200152 |
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| Silva,C.M.M.; Ferreira,L.R.; Ferreira,F.A.; Miranda,G.V.. |
| Imazapyr has been used to control stump sprouting in stand of Eucalyptus plantations, where herbicide is applied to the tree trunk before cutting. The herbicide is applied exclusively on the stump to be killed, but little is known about the final fate of the molecule. Imazapyr exudation via roots of eucalypt grown in soil as the substrate was evaluated under greenhouse conditions. Different herbicide doses (0.000, 0.375, 0.750, 1.125, 1.500, and 3.000 kg ha-1 a.i.) were applied on the aerial parts of 8-month-old Eucalyptus grandis clonal seedlings, cultivated in pots with 18.0 dm³ of soil. Forty days after this treatment, the eucalypt plants were cut and a lateral opening in the containers was made and the plants inclined 90º, with plants sensitive to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chopper; Eucalyptus grandis; Bioindicators; Interference; Exudates. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582004000100014 |
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| SILVA,LUZIMAR CAMPOS DA; AZEVEDO,ARISTÉA ALVES; SILVA,ELDO ANTÔNIO MONTEIRO DA; OLIVA,MARCO ANTONIO. |
| Os objetivos deste trabalho foram: caracterizar os efeitos do flúor em espécies arbóreas nativas, nos estádios de plântula e muda; identificar injúrias provocadas pelo flúor na estrutura da lâmina foliar da espécie mais sensível; fornecer subsídios para seleção de características a serem utilizadas na bioindicação e contribuir com informações sobre a resistência ou tolerância das plantas, visando ao reflorestamento de áreas impactadas pela chuva com flúor. As espécies analisadas foram Gallesia gorazema Moq. (Phytolaccaceae), Genipa americana L. (Rubiaceae), Joannesia princeps Vell. (Euphorbiaceae), Peltophorum dubium (Spreng.) Taub. (Leguminosae, Caesalpinioideae) e Spondias dulcis Forst. f. (Anacardiaceae). Plântulas e mudas dessas espécies, provenientes... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fluoride; Bioindicators; Native plants; Symptomatology. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042000000400004 |
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| Kuwano,Biana Harumi; Knob,Adriana; Fagotti,Dáfila Santos Lima; Melém Júnior,Nagib Jorge; Godoy,Leandro; Diehl,Raquel Cátia; Krawulski,Cristina Célia; Andrade Filho,Galdino; Zangaro Filho,Waldemar; Tavares-Filho,João; Nogueira,Marco Antonio. |
| Sustainable use of soil, maintaining or improving its quality, is one of the goals of diversification in farmlands. From this point of view, bioindicators associated with C, N and P cycling can be used in assessments of land-use effects on soil quality. The aim of this study was to investigate chemical, microbiological and biochemical properties of soil associated with C, N and P under different land uses in a farm property with diversified activity in northern Parana, Brazil. Seven areas under different land uses were assessed: fragment of native Atlantic Forest; growing of peach-palm (Bactrys gasipaes); sugarcane ratoon (Saccharum officinarum) recently harvested, under renewal; growing of coffee (Coffea arabica) intercropped with tree species; recent... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioindicators; Land use; Metabolic coefficient; Microbial biomass; Soil enzymes; Soil quality. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000100005 |
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| Santos,Marcielli Aparecida Borges dos; Oliveira Filho,Luís Carlos Iuñes de; Pompeo,Pâmela Niederauer; Ortiz,Danielle Cristina; Mafra,Álvaro Luiz; Klauberg Filho,Osmar; Baretta,Dilmar. |
| ABSTRACT: Springtails (Collembola) are soil organisms with wide morphological diversity and are sensitive to alterations in the soil, regardless of whether they are human-caused or not. The aim of this study was to evaluate the influence of land use on the morphological diversity of springtails and verify their relationships with soil physical, chemical, and microbiological properties. Samples were collected in the eastern region of Santa Catarina, in three municipalities: Joinville, Blumenau, and Timbó. They included the following land use systems (LUSs): native forest (NF), Eucalyptus plantation (EP), pasture (PA), integrated crop-livestock (ICL), and no tillage (NT). Samples were collected to determine soil properties, and pitfall traps were set in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Eco-morphological traits; Morphotypes; Bioindicators; Soil fauna. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100421 |
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| Pereira,Jamil de Morais; Segat,Julia Corá; Baretta,Dilmar; Vasconcellos,Rafael Leandro de Figueiredo; Baretta,Carolina Riviera Duarte Maluche; Cardoso,Elke Jurandy Bran Nogueira. |
| ABSTRACT Studies on soil quality in Araucaria forests contribute to understanding changes in this ecosystem and serve as a tool in conserving its biodiversity. The aim of this study was to evaluate the potential of soil macrofauna in discriminating native and replanted Araucaria forests for selection of soil quality indicators. Native (NF) and replanted (RF) Araucaria angustifolia forests were evaluated in three regions of the state of São Paulo, representing three true replications. Fifteen soil samples were collected in each area for evaluation of the physical, chemical, and microbiological properties and the macrofauna through use of monolith excavation and the manual screening method [Tropical Soil Biology and Fertility (TSBF) method]. In addition, we... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Multivariate analysis; Biodiversity; Bioindicators. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100423 |
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| Bini,Daniel; Figueiredo,Aline Fernandes; Silva,Mylenne Cacciolari Pinheiro da; Vasconcellos,Rafael Leandro de Figueiredo; Cardoso,Elke Jurandy Bran Nogueira. |
| Studies on microbial activity and biomass in forestry plantations often overlook the role of litter, typically focusing instead on soil nutrient contents to explain plant and microorganism development. However, since the litter is a significant source of recycled nutrients that affect nutrient dynamics in the soil, litter composition may be more strongly correlated with forest growth and development than soil nutrient contents. This study aimed to test this hypothesis by examining correlations between soil C, N, and P; litter C, N, P, lignin content, and polyphenol content; and microbial biomass and activity in pure and mixed second-rotation plantations of Eucalyptus grandis and Acacia mangium before and after senescent leaf drop. The numbers of cultivable... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Microorganism; Litterfall; Bioindicators; Forestry; Legumes; Basal respiration. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000100008 |
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