Este trabalho apresenta a fauna de imaturos da Ordem Trichoptera coletada em 101 riachos na Bacia do Rio das Almas, entre Agosto e Outubro de 2008, e no Rio Paranã, município de Iaciara-GO, em Agosto de 2003. Foram usadas peneiras de 0,025 m² de abertura e malha de 2 mm. Nós registramos quatro novos gêneros para o Estado de Goiás, expandindo, assim, de 33 para 37 os registros de gênero para o Estado de Goiás, contribuindo para o conhecimento da fauna da Ordem Trichoptera no Brasil Central.

This paper deals with the Trichoptera immature fauna collected in 101 streams in Rio das Almas Basin during August-October 2008 and in Rio Paranã, Iaciara-GO municipality, on August 2003, using kick-nets with 0.025 m² of opening and 2 mm mesh. We record four new genera for Goiás State, expanding records of genera from 33 to 37 and contributing to the Trichoptera fauna knowledge in Central Brazil.

A concepção de meio ambiente tem uma relação direta com as práticas pedagógicas que serão elaboradas e a situação ambiental que vivenciamos hoje é imperativa no sentido de exigir que soluções sejam condizentes com a realidade. Nesse sentido, o sujeito ecológico tem seu alicerce embasado na corrente crítica de EA (Educação Ambiental), que concebe o meio ambiente em sua totalidade, considerando as complexas e conflituosas interfaces que permeiam a relação homem e natureza. Dessa forma, nos preocupamos nesta pesquisa em verificar quais são as concepções de meio ambiente dos educadores ambientais do Zoológico de Goiânia, verificar como isso é traduzido nas atividades e, por fim, verificar as contribuições desse espaço não formal de educação na formação do sujeito ecológico. Notou-se que as atividades do Zoológico de Goiânia estão alicerçadas em uma perspectiva naturalista e conservacionista, que compreendem o meio ambiente como natureza e como recurso. Assim, foram encontradas práticas simplistas e que reforçam a necessidade de adquirir comportamentos ditos ecologicamente corretos, bem como reconstruir uma ligação com a natureza, sem, contudo, contribuir com a formação do sujeito ecológico. Dessa forma, o zoológico como um espaço não formal de educação, não cumpre seu papel educativo, seu compromisso com a formação do cidadão crítico, ciente dos seus direitos e deveres sociais, capaz de intervir nas discussões sobre as questões ambientais em prol de uma sociedade mais justa e ambientalmente sustentável.

The concept of environment has a direct relationship to the pedagogical practices that are developed and applied and the current environmental setting which is imperative, as it requires solutions that must be consistent with reality. Thus, the ecological subject has its foundation based on the critical current of EE (Environmental Education), which regards the environment as a whole, considering the complex and conflicting interfaces that permeate the relationship between humans and nature. Thereby, we propose in this study to investigate what is the concept of environment held by the environmental educators at the Zoo in Goiânia. We intend to verify how this is translated into pedagogical activities and, finally, analyze the contributions of this informal education setting to the formation of the ecological subject. It was noticed that didactic activities at the Zoo in Goiânia are based on a naturalist and conservationist perspective, which regards the environment as nature and resource. Moreover, we found simplistic practices that, although reinforcing the need of the subject to acquire behaviors considered in agreement with environmentally friendly practices, as well as the need to rebuild a connection with nature, they do not contribute to the critical formation of the ecological subject. This way, the zoo, as an informal educational setting, does not fulfill its educative role, nor its commitment to aid the development of critical-thinking citizens, aware of his or her rights and social duties, and capable to intervene on environmental issues, in pursuit of a juster and environmentally sustainable society.

O objetivo deste trabalho foi avaliar a estrutura e dinâmica das populações de fitoflagelados nos períodos de chuva e estiagem dos anos de 2000 e 2001 nas lagoas de inundação do rio Araguaia. As análises foram baseadas na riqueza específica, composição florística e biovolume dos fitoflagelados que estão associadas a determinadas variáveis climáticas, físicas e químicas da água. O teste de Mantel evidenciou um fraco padrão espacial das populações de fitoflagelados, além disso, o teste de Mantel corroborou a importância do componente local na estrutura dessas populações. Os escores derivados da DCA, aplicadas aos dados biológicos demonstram que os períodos de águas altas e baixas não se diferenciaram fortemente em 2000 e 2001, entretanto foi possível notar variação interanual das populações de fitoflagelados. Os dados de biovolume indicaram que existiu um fitoplâncton predominado por Chryptophyceae (grupo funcional Y) e Euglenophyceae (grupo funcional W1) em 2000 e 2001. A riqueza especifica e o biovolume responderam ao pulso de inundação, tanto as águas altas como as águas baixas apresentaram dinâmicas distintas nos dois anos o que pode indicar a importância do pulso de inundação sobre os fitoflagelados.

The aim of this work was to evaluate ecological aspects of phytoflagellate populations during the rainy and dry seasons of 2000 and 2001 in floodplain lakes in the Araguaia River. The analyses were based on species richness, composition and biovolume of the phytoflagellates, associated with climatic and limnological variables of the water. The Mantel test showed weak spatial patterns for phytoflagellate populations; moreover the Mantel test confirmed the importance of the local component in the structure of these populations. The results of DCA applied to the biological data showed that high- and low-water periods were not strikingly different in 2000 and 2001. Biovolume data indicated that the phytoplankton was dominated by Chryptophyceae (functional group Y) and Euglenophyceae (functional group W1) in 2000 and 2001. Species richness and biovolume responded to the flood pulse. Both high- and low-water had different dynamics in the two years; this seems to indicate the importance of the flood pulse for phytoflagellates.

The stonefly (Pleeoptera) nymphs of streams of the Almas River basin, Pirenópolis, Goiás State, Central Brazil, and some abiotie factors that might affect their temporal distribution were studied. Nymphs were sampled monthly (June 1993 to July 1994) in five stations with a Surber sampler, and each sample consisted of 20 units totalling 2 m². In each station, stream velocity, discharge, temperature, electrical conductivity and pH were measured in order to assess their influence on the density of nymphs. Nymphs were identified to genus level. In general, the annual variation in density of nymphs, in four stations, showed that the seasonal variation was not clearly influenced by the annual rain cycle. In the case of the one of the stations, where numbers of stonefly nymphs were low and the anthropic action high, there was a density peak in the rainy season. This peak was probably related to dilution of the organie pollution in the rainy season, improving the environmental conditions for the Pleeoptera.

The Trichoptera fauna in two first-order streams of Serra dos Pireneus. Goiás State, was studied from June/1993 to July/1994. The Trichoptera larvae abundances were lower in the rainy season in the two streams. The temporal distributions of the functional groups (feeding categories) was similar in both streams. The ordination by Detrended Correspondence Analysis (DCA) detected a higher temporal heterogeneity of the Trichoptera community in one of the sampling stations, probably associated with higher discharge variation. There is a large variation of abundance of some genera between the two studied streams.

Relationships among some abiotic factors (temperature, velocity, flow, conductivity, oxy-reduction potential and pH) and the seazonal density of benthic insects (immature forms) of the orders Ephemeroptera, Plecoptera and Trichoptera at the Parque Ecológico de Goiânia, Goiás are studied. An area of 1m² was sampled and abiotic factors were recorded in 4 sites from August/1994 to July/1995. The faunistic composition was 75% Ephemeroptera, 1% Plecoptera and 24% Trichoptera. The data suggest the water velocity and flow as the main factors that determined the aquatic insects abundance.

The faunal composition of the Hydropsychidae (Trichoptcra) of Pedregulho Stream is presented. Feeding habits of larvae and behavioural aspects of both larvae and adults are described.