Different Responses in Geographic Range Shifts and Increase of Niche Overlap in Future Climate Scenario of the Subspecies of Melipona quadrifasciata Lepeletier

Climate change is suggested to be one of the possible drivers of decline in pollinators. In this paper, we applied an ecological niche model to modeling distributional responses in face of climate changes for the subspecies of Melipona quadrifasciata Lepeletier. This species is divided into two subspecies based on difference in the yellow tergal stripes, which are continuous in M. q. quadrifasciata and interrupted in M. q. anthidioides. The geographic distribution of each subspecies is also distinct. M. q. quadrifasciata is found in colder regions in the Southern states of Brazil, whereas M. q. anthidioides is found in habitats with higher temperatures, suggesting that ecological features, such as adaption to distinct climatic conditions may take place. Thus, the possibility of having diff erent responses in geographic range shifts to future climate scenario would be expected. This study aimed to investigate the eff ects of climate changes on the distribution of the two M. quadrifasciata subspecies in Brazil, using an ecological niche model by the MaxEnt algorithm. Our results indicate that the subspecies showed clear diff erences in geographic shift patterns and increased climate niche overlap in the future scenarios. M. q. anthidioides will have the potential for an increase of suitable climatic conditinos in the Atlantic Forest, and towards the Pampa biome, while M. q. quadrifasciata will suffer a reduction of adequate habitats in almost all of its current geographic distribution. Given the potential adverse eff ects of climate changes for this subspecies, conservation actions are urgently needed to avoid that it goes extinct

How Far Upstream: A Review of Estuary-Fresh Water Fish Movements in a Large Neotropical Basin

The present study comprises the first systematic analysis of the limits of upstream movement by some fish species that use the estuarine area of the Patos Lagoon basin in southern Brazil. The Sinos River sampling program included 86 sites, sampled from 1998 to 2014, covering lowland stretches and headwater streams. The Guaíba sampling program was conducted from February 2011 to March 2013 and comprised 59 independent samples. Six fish species using estuarine areas occur in the upper Patos basin, 250–500 km from the Patos Lagoon outlet to the Atlantic Ocean. Parapimelodus nigribarbis specimens ranged from 11.3 to 18.9 cm (median = 13.3 cm) in length, i.e., were adults (Sinos, n = 459; Guaíba, n = 149). The species was captured almost 500 km from the Patos outlet, as far as 180 km upstream in the Sinos main channel. In Guaíba Lake, the species was captured mainly in autumn, although it was more abundant in winter and spring in the Sinos River. Lycengraulis grossidens was captured in the Sinos Basin, restricted to the lower stretches in spring and summer months (n = 7). In Guaíba Lake (n = 134) the species occurred throughout the lake and year-round, and was ten times more abundant in spring. Most specimens were adult (8.2–26.9 cm, median = 20.0 cm). Most Micropogonias furnieri individuals (n = 63) were juveniles (10.7–33.4 cm, median = 14.2 cm). The species was not captured in the Sinos Basin. In Guaíba Lake M. furnieri occurred predominantly in the southernmost part (downstream) and was more abundant (>10×) in winter. Genidens genidens (n = 27) was captured only in summer in the southern part of Guaíba Lake (closest to the outlet). Most individuals were adults (24.5–34.0 cm, median = 27.8 cm). Genidens barbus (n = 7) was restricted to spring and summer months and was captured only in southern (near-outlet) parts of Guaíba Lake, comprising mainly large juveniles and adults (31.5–68.0 cm, median = 37.9). Mugil liza (n = 13) appeared in spring in relatively low abundances but was widespread throughout Guaíba Lake during the summer. The species was not captured in the Sinos sampling program. The size profile comprised specimens nearing maturity (34.3–45.5 cm, median = 38.9 cm). Finally, we suggest possible biological cycles for these species that combine these new distribution data with published information

MATERIALS MANAGEMENT: A REVERSE LOGISTICS CASE OF AGROTOXICS EMPTY CONTAINERS IN A SUGAR AND ALCOHOL COMPANY

With the advances in today's chemical pesticides, global agriculture has become extremely productive, which, from another point of view, brought many environmental problems, especially in relation to damage caused by pesticides and the improper disposal of their packages. Brazil, on the other hand, holds the world record in the collection and recycling of empty pesticides containers, which could only be configured within a process of compromise among all stakeholders: from the manufacturers of pesticides to the farmer (or rural enterprise). The objective of this study was to analyze the measures taken from storage, to transportation, and to collection posts of empty pesticides containers, by a large Brazilian sugar and ethanol company. The methodology has adopted of an exploratory nature within a qualitative approach, through a semi-structured interview with the logistics and material manager of the company investigated. It was found that the company follows a strict process of handling empty containers of pesticides, following the standards and laws of the country, aiming to achieve the ISO14000 certification, for the social compromise to the community in which it operates

Influence of temperature and culture media on growth and lipolytic activity of deep-sea Halomonas sulfidaeris LAMA 838 and Marinobacter excellens LAMA 842

Bacteria with lipolytic activity are widespread in the marine environment. These organisms can be usedas a source of lipases with activity in unusual conditions such as low temperatures and high salinities.These characteristics allow them to be applied to several industrial processes and products includingwastewater treatment and detergent production. In this context the lipolytic activity of bacteria isolatedfrom deep-sea sediments of the South Atlantic was evaluated. Among the collection studied, two strains,Halomonas sulfidaeris LAMA 838 and Marinobacter excellens LAMA 842, were selected for further analysisconcerning their growth and lipolytic activity in different temperatures and culture media. Both strainswere characterized as mesophiles: H. sulfidaeris LAMA 838 grew best at 30ºC, while M. excellens LAMA 842showed a maximum growth rate between 20 and 25ºC. Maximum lipolytic activity for both microorganismswas observed above 45ºC, but only M. excellens LAMA 842 had lipolytic activity at low temperatures (5ºC) aswell. Considering the culture media employed, H. sulfidaeris LAMA 838 grew better in marine broth withoutTween 40, while M. excellens LAMA 842 grew best in marine broth supplemented with Tween 40. Bothorganisms had maximum lipolytic activity in rich or minimal media supplemented with Tween 40. Theseresults demonstrate the potential of deep-sea bacteria as sources of lipases and indicate conditions thatmay be used in their cultivation and for the production of industrially relevant enzymes

Aprendizagem baseada em problemas (PBL): um relato de experiência em cursos de engenharia da UFSC, Campus Joinville / Problem-based learning (PBL): a description of experiences in engineering courses at UFSC, Campus Joinvile

O objetivo deste artigo é apresentar um relato de experiência da aprendizagem baseada em problemas (PBL), estratégia aplicada na disciplina de Sistemas de Transportes dos cursos de Engenharia da UFSC, Campus Joinville. A pesquisa se classifica como um estudo exploratório e descritivo, com abordagem qualitativa e, de acordo com os procedimentos técnicos, um estudo de caso.  Como principais resultados obtidos, vale destacar que a prática da PBL permite que as aulas deixem de ser estritamente expositivas e centradas no professor.  A experiência proporcionou ao estudante, além do aprendizado proposto no projeto, a experiência da autocrítica e do julgamento quanto ao desempenho dos outros membros, no caso, colegas de sala, levando-se em consideração a discrição, a ética, a imparcialidade e outras habilidades que podem ser desenvolvidas no ambiente acadêmico.

Ecologia de Campo: Estudos Ecológicos na Baía Babitonga

Esta obra marca os dez anos do curso de Pós-Graduação em Ecologia (POSECO) da Universidade Federal de Santa Catarina. Para muito além dessa década, esta obra materializa as experimentações, vivências e aprendizados de um novo ciclo de ecólogos.CAPE

Pervasive gaps in Amazonian ecological research

Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5–7 vast areas of the tropics remain understudied.8–11 In the American tropics, Amazonia stands out as the world’s most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepre sented in biodiversity databases.13–15 To worsen this situation, human-induced modifications16,17 may elim inate pieces of the Amazon’s biodiversity puzzle before we can use them to understand how ecological com munities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple or ganism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region’s vulnerability to environmental change. 15%–18% of the most ne glected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lostinfo:eu-repo/semantics/publishedVersio