scholarly journals Famílias de Hymenoptera (Insecta) como ferramenta avaliadora da conservação de restingas no extremo sul do Brasil

2010 ◽  
Vol 2 (3) ◽  
pp. 64-69
Author(s):  
Eduardo Alves Oliveira ◽  
Filipe Neves Calheiros ◽  
Daiane Silveira Carrasco ◽  
Cristina Maria Loyola Zardo

Com o objetivo de estimar e comparar a diversidade e flutuação populacional das famílias de Hymenoptera em área de restinga foi realizado um levantamento faunístico em duas áreas de restinga com diferentes níveis de conservação. Foram coletados 5.518 himenópteros distribuídos em 30 famílias. Os picos populacionais na flutuação das famílias ocorreram no verão confirmando a alta correlação da temperatura com a distribuição das famílias. Constatou-se na restinga em sucessão maior riqueza, porém, com alta dominância, abrigando representantes dos três grupos ecológicos (antófilos, generalistas e parasitóides) em alta abundância. A restinga preservada, com 17 famílias, verificou-se mais diversa e homogênea, onde verificou-se maior abundância dos parasitóides, devido à maior estabilidade do sistema. A riqueza de famílias de Hymenoptera em áreas de restinga pode ser utilizada como parâmetro indicativo de qualidade ambiental, para este tipo de bioma. Hymenoptera Families (Insecta) as Evaluation Tool of the Conservation of Sandbanks in Southern Brazil Abstract. With aim to estimate and compare the diversity and population of the Hymenoptera families in a sandbank area was carried out a wildlife survey in two areas of sandbank with different levels of conservation. We collected 5 518 Hymenoptera distributed in 30 families. The peaks in the families fluctuation occurred in the summer confirmed the high correlation of temperature with the distribution of families. The sandbank in succession had the highest richness, however with high dominance, hosting representatives of the three ecological groups (anthophilous, generalists and parasitoids) in high abundance. The sandbank preserved, with 17 families, was more diverse and homogeneous, where the parasitoids showed greater abundance due to greater system stability. The richness of Hymenoptera families in sandbanks can be used as a parameter indicative of environmental quality.

2016 ◽  
Vol 38 (3) ◽  
pp. 333 ◽  
Author(s):  
Juliano De Oliveira Barbirato ◽  
Juliana Melo Conceição ◽  
Dandara Silva Cabral ◽  
André Luiz Paier Barroso ◽  
Daniel Basílio Zandonadi ◽  
...  

Mangroves are classified as permanent preservation areas and regarded as natural nurseries. However, they have suffered several anthropogenic stresses, resulting in their decline. In the light of that, comes the importance of researching their environmental characteristics and revealing possible factors that have led to the degradation of this important ecosystem. The aim of this study was to evaluate the environmental quality of different areas in the mangroves of Ilha do Lameirão Ecological Station through microbiological analyzes of sediment and interstitial water along ten (10) sites, distributed in two areas with different conservation levels (Canal dos Escravos (CE) and Maria Ortiz (MO)) between 2010 and 2012. The microbiological analyzes revealed that MO region, in all seasons of the year, achieved total coliform and thermo-tolerant coliform values above those permitted by the CONAMA Resolution 357/05, fitting the Class 2 conservation standard. The presence of high levels of total and thermo-tolerant coliforms in MO is a strong indicator of impacts originated from the human population and, consequently, the decline of the mangrove itself and the health of human communities surrounding that area. 


2018 ◽  
Vol 61 (1) ◽  
pp. 227-240 ◽  
Author(s):  
María Catalán-Eslava ◽  
Sixto González-Víllora ◽  
Juan C. Pastor-Vicedo ◽  
Onofre R. Contreras-Jordán

Abstract The objective of this study was to analyse the differences in tactical principles, decision-making and execution of the return shot and drop shot of squash players at different levels of proficiency. The sample was composed of 80 players, divided into four levels of expertise (first national category, second national category, autonomous regional level and provincial level). The Squash Performance Evaluation Tool was used for recording the level of decision-making and execution. The results revealed that reading of the context of the game improved as the level of the player’s expertise of both the return shot and the drop shot increased. The correlation between correct decision-making and better quality execution for both the return shot and the drop shot in squash also improved with the player’s level of expertise. According to these results, improvements in situational tactical principles and the application of tactical principles, correct decision-making and high-quality execution are essential to develop the athletic performance level among squash players.


2015 ◽  
Vol 20 (6) ◽  
pp. 813-835 ◽  
Author(s):  
Laura Policardo

AbstractIf the demand for environmental goods is increasing with income, democratization shifts the decisive power from a rich autocrat to a poorer individual (decisive voter), so it should be associated with worse environmental conditions. In this paper, it is shown through a theoretical model that: (i) democratization may have mixed effects on the level of environmental quality, depending on the size of the price and income effects on the demand for environmental quality associated with a decrease in the decisive political actor's wealth; and (ii) assuming that society is composed of two classes of individuals with different levels of exposure to pollution, and assuming moreover that the decisive voter belongs to the most exposed class of individuals while the autocrat does not, democratization is beneficial for the environment, and the better the effect on the environment, the bigger the difference in wealth between the two decisive political actors.


2014 ◽  
Vol 35 (3) ◽  
pp. 325-336 ◽  
Author(s):  
Márcia Isabel Käffer ◽  
Suzana Maria de Azevedo Martins

1996 ◽  
Vol 85 (12) ◽  
pp. 1499-1500 ◽  
Author(s):  
E Giugliani ◽  
R Issler ◽  
G Kreutz ◽  
C Meneses ◽  
E Justo ◽  
...  

Author(s):  
Gul Polat ◽  
Harun Turkoglu ◽  
Asli Pelin Gurgun ◽  
Naz Yikilmaz

Nowadays, the concept of green building is no longer an alternative but a necessity. The acceptance of a building as “green” depends on having a certificate. LEED is one of the widely used green building certification systems in Turkey. The main objective of this study is to find out whether there were statistically significant differences between the credit achievements of 105 newly constructed and certified buildings in Turkey, which were certified according to four different levels, and to determine which of these credit achievements are weak. For this purpose, Kruskal-Wallis and Mann-Whitney U tests were performed and the findings were interpreted. Findings revealed that the highest level of achievement of these buildings was in sustainable sites, water efficiency, innovation in design, and regional priority credits, while the lowest level of achievement was in energy and atmosphere, materials and resources, and indoor environmental quality credits. Analyses revealed that the achievements in the energy and atmosphere, materials and resources, and indoor environmental quality credits of green buildings are relatively low when compared to the ones in other credits. There may be several reasons behind these low levels of achievement such as poor green culture, high investment cost of necessary systems, absence of reusable, recycled, and renewable materials. If these problems, most of which are peculiar to developing countries, can be overcome, higher certification levels can be achieved.


Energies ◽  
2020 ◽  
Vol 13 (10) ◽  
pp. 2454 ◽  
Author(s):  
Ariel Villalón ◽  
Marco Rivera ◽  
Yamisleydi Salgueiro ◽  
Javier Muñoz ◽  
Tomislav Dragičević ◽  
...  

Microgrids need control and management at different levels to allow the inclusion of renewable energy sources. In this paper, a comprehensive literature review is presented to analyse the latest trends in research and development referring to the applications of predictive control in microgrids. As a result of this review, it was found that the application of predictive control techniques on microgrids is performed for the three control levels and with adaptations of the models in order to include uncertainties to improve their performance and dynamics response. In addition, to ensure system stability, but also, at higher control levels, coordinated operation among the microgrid’s components and synchronised and optimised operation with utility grids and electric power markets. Predictive control appears as a very promising control scheme with several advantages for microgrid applications of different control levels.


2008 ◽  
Vol 65 (8) ◽  
pp. 1436-1441 ◽  
Author(s):  
Valentina Marin ◽  
Mariapaola Moreno ◽  
Paolo Vassallo ◽  
Luigi Vezzulli ◽  
Mauro Fabiano

Abstract Marin, V., Moreno, M., Vassallo, P., Vezzulli, L., and Fabiano, M. 2008. Development of a multistep indicator-based approach (MIBA) for the assessment of environmental quality of harbours. – ICES Journal of Marine Science, 65: 1436–1441. Environmental pollution in harbours can have detrimental effects on the port, its users, and the surrounding environment. Despite these risks, the Italian legal framework for marine environmental quality does not apply to harbours and marinas, so monitoring is not mandatory. With the aim of supporting environmentally sound management, we propose an indicator-based protocol to assess the environmental quality of harbours through the development of a flexible and site-specific multistep indicator-based approach (MIBA), which gives special consideration to local features. MIBA comprises three steps: (1) development of a simple tool for harbour-specific identification of vulnerable areas and for designing monitoring schemes; (2) selection of suitable environmental quality indicators of different levels of complexity and applicability to the typologies of risks involved; and (3) development of a user-friendly interpretation scheme based on categorical risk values and a visualization code. The approach has been tested in two case studies in marinas located in the Ligurian Sea (Italy).


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