&lt;I&gt;Limnothrix bicudoi&lt;/I&gt;, a new species of Cyanophyceae/Cyanobacteria from Southeast of Brazil

Ann. Limnol. - Int. J. Lim.

Alves

2011

-The objective of the present study was to examine the colonization of oligochaetes during the decomposition of leaves of the macrophyte Eichhornia azurea in a lentic system in southeastern Brazil. The experiment was conducted between September and November 2007, with the use of 21 nylon bags measuring 15 r 15 cm with 2 mm mesh, each containing 10 g of dried leaves. The bags were removed from the lake after 2, 5, 8, 12, 25, 45 and 65 days. At the end of the experiment, 31.40% of the initial mass remained, and the decomposition rate was 0.018 d x1 . The mean density of oligochaetes during the experiment was 32.81 ¡ 9.58 ind.g x1 DM. The sub-families Naidinae and Pristininae accounted for 99.83% of the oligochaetes. The substrate quality influenced the colonization of E. azurea leaves, as observed from the cluster analysis by the formation of two groups based on increased density during the experiment, indicating a degradative ecological succession. During the decomposition there were changes in the community of oligochaetes, resulting from differences in the ability to exploit various food sources, with predominance of predators in the first decomposition phase and of collectors at the end of the experiment.

Section: Study Areamentioning

confidence: 99%

Colonization by oligochaetes (Annelida: Clitellata) in decomposing leaves ofEichhornia azurea(SW.) Kunth (Pontederiaceae) in a neotropical lentic system

Martins

Ann. Limnol. - Int. J. Lim.

Alves

2011

“…The experiment was conducted in Manacás Lake (21° 46′ 68″ S, 43° 22′ 22″ W), a reservoir with a surface area of 0.02 km 2 and a maximum depth of 5 m (Azevedo et al 2003), located in the municipality of Juiz de Fora, Minas Gerais state, in southeastern Brazil (Figure 1). …”

Section: Methodsmentioning

confidence: 99%

“…A- Brazil, with Minas Gerais in gray and highlighted Juiz de Fora, B- Juiz de Fora and highlighted the Universidade Federal de Juiz de Fora, C- Manacas Lake, the study area (Azevedo et al 2003). High quality figures are available online.…”

Section: Methodsmentioning

confidence: 99%

Colonization by Chironomidae Larvae in Decomposition Leaves ofEichhornia azureain a Lentic System in Southeastern Brazil

Martins

Journal of Insect Science

et al. 2013

The objective of this study was to analyze the colonization of Chironomidae (Diptera) larvae during the decomposition of Eichhornia azurea (Swartz) Kunth (Commelinales: Pontederiaceae) leaves in a lake in southeastern Brazil in two seasons of the year. The experiment was conducted from September to November 2007 and February to April 2008. In each period, 21 litter bags were used, each containing 10 g of dried leaves. Three bags were removed after 2, 5, 8, 12, 25, 45, and 65 days of colonization. The decomposition rate of the E. azurea leaves was rapid in both seasons, with no significant difference between them. The Chironomidae showed higher density than the other invertebrates. Goeldichironomus, Tonytarsus, and Corynoneura were the most abundant genera of Chironomidae. The invertebrate density increased during the experiment, differing within days but not between seasons. The faunal composition differed between the decomposition phases (initial and final), but did not differ between the seasons (dry and wet). The taxa Ablabesmyia, Caladomyia, Chironomus, Goeldichironomus, and Parachironomus were the most closely related to the final days of the experiment. Litter was the main food item found in the gut contents of the organisms of all the genera analyzed, both at the beginning and end of the decomposition. We believe that the feeding activity combined with the high larval density is an important factor contributing to the rapid decomposition of the E. azurea leaves. In conclusion, the succession process along the detritus chain of E. azurea was more important in structuring the assemblage of Chironomidae larvae than seasonal variations.

“…Pesquisas vêm sendo realizadas no Campus da UFJF com vistas ao monitoramento dos impactos causados pelas atividades rotineiras, destacando o tráfego de veículos, o lançamento de esgotos domésticos, efluentes de laboratórios e o grande volume de obras. Estudos limnológicos iniciados por Azevedo et al (2003) descobriram uma nova espécie de cianobactéria (Limnothrix bicudoi) no Lago dos Manacás. Posteriormente, Soares et al (2009) estudaram as fases de equilíbrio desta espécie, observando que a abundância é influenciada pela temperatura e pelo período sazonal.…”

Section: Introductionunclassified

Untitled

2016

Rev. ambiente água

1022-1022Ambiente & Água -An Interdisciplinary Journal of Applied Science ISSN 1980-993X -doi:10.4136/1980 The following list (Table 1) includes the names and affiliations of all reviewers that evaluated the submissions processed for Volume 11, 2016 of Revista Ambiente & Água, including manuscripts that were accepted and published in one of the four annual issues and also manuscripts submitted and rejected in 2016 up to October 10, 2016. It may therefore include the names of reviewers that completed their evaluations between September, 2015 and October, 2016. We are deeply indebted to all of them that voluntarily and anonymously spent their precious time to support the journal, and contributed immensely to the quality of the published articles. We gratefully acknowledge their professional work and outstanding product. Note: 1) Some of these reviewers evaluated more than one manuscript; 2) This list includes reviewers that evaluated submissions that were not accepted for publication, in addition to the ones published in 2016.As seen in Table 2, 21 reviewers are from international institutions. This is an indication that the journal is gaining international acceptance and inclusion. ABSTRACTThis paper discusses the reverse logistics of empty agrochemical containers, the partners involved, and it focuses on the participation of the Agricultural Defense Agency of the São Paulo state government in reducing the risk of water and soil contamination in order to preserve these resources for future generations. O sistema de logística reversa e o papel da fiscalização governamental para a preservação do solo e da água: o caso das embalagens vazias de defensivos agrícolas RESUMO Este trabalho tem por objetivo demonstrar como a logística reversa das embalagens vazias de agrotóxicos funciona, quais são os parceiros envolvidos, focando na participação da Defesa Agropecuária do governo do Estado de São Paulo, na redução dos riscos de contaminação de água e solo, com o objetivo de preservar estes recursos para as gerações futuras.Palavras-chave: agricultura, agrotóxico, contaminação ambiental. DISCUSSIONConsidered a regulatory landmark in 1989, a Brazilian federal law first demonstrated the country's concern with the handling and disposal of pesticide containers. Previously, most of the focus was on pesticide efficiency and most of the containers were made of glass, not of plastic as they are today. The environment was still not considered an important concern, and even today Brazil is the largest consumer of pesticides worldwide. The correct handling and disposal of pesticide containers is therefore of primary importance in public policy. Brazil's Federal Laws 7802 (Brazil, 1989), 9974 (Brazil, 2000 and Decree 4074 (Brazil, 2002) regulate the obligation to return empty pesticide containers to retailers or producers. In 2010, reverse logistics was defined by Federal Law 12305 (Brazil, 2010), which created the National Policy on Solid Waste. According to this law, reverse logistics can be understood as a set of actions...