Laboratório de Tecnologia Educacional BIBLIOTECA DIGITAL               DE CIÊNCIAS

Atividade para observação dos seres vivos presentes num ambiente no entorno de um lago ou lagoa e coleta de água e detritos para posterior observação de microbiota aquática.

Atividade de preparação de um meio para cultura de protozoários e observação microscópica da microbiota presente na amostra de água coletada na aula anterior.

Atividade de observação da microbiota coletada de lago, charque ou lagoa cultivada em meio de cultivo durante 7 dias.

Recuperação do equilíbrio no meio aquático por processos naturais após as alterações pelo lançamento de efluentes

The South American Sea Lion from specie Otaria flavescens.

Physical appearance: 40 cm. The feet are red and webbed. The chest is brown, as well as the face that is a bit darker. There is a patch of iridescent feathers in the wings. When flying it shows a large white spot at the back of the wing. The male has a red beak and the female’s is blue. The Female also has white spots on the face. Distribution: From Venezuela to Argentina. Habitat: Wetlands, lakes, ponds and rivers even in polluted places. Diet: Feeds on seeds, leaves and small invertebrates. The hatchlings are goot at catching insects. Reproduction: Lays up to 14 bluish or greenish eggs. When the adult realizes the presence of a potential predator it distracts its attenti...

48 cm. The face is grey, the chest cinnamon and the belly black. There is a large white spot in the wings, more evident when flying. The beak and feet are red. Males and females are similar. The immature is grayish brown Distribution: From Texas (U.S.A) to Bolivia and Argentina. Habitat: Lives in lakes, rivers, wetlands and even in mangroves. Diet: Feeds on leaves, small seeds and aquatic invertebrates. Reproduction: The nest is built on the ground or hollow trees. The eggs are white, sometimes greenish or bluish. More than one female may lay eggs in the same nest and sometimes may even lay eggs in other species’s nests such as the white faced whistling duck (Dendrocygna viduata...

48cm Identification: the body is mostly cinnamon with dark streaks on the wings. It may be locally the commonest duck, especially in Southern Brazil wetlands, where its hunting is allowed provided the state’s quotas are respected. Regarding its habitat this species tends occur in open wetlands, surrounded by grasslands. Feeds mainly by grazing small grasses on the lake shores or underwater but also eats aquatic plants, aquatic insects and small fish. It may build the nest either in a tree hole or on the aquatic plants. The female lays from 8 to 14 eggs that are sat for about one month. The offspring start to fly within 55 days after hatching.

35 cm. The legs and the toes are long and green. Has a red shield-like structure in the forehead that is larger in the male. The neck and inferior parts are blue. The back is brown and there is a white band in the wing. The immature individuals are brown. Distribution: All over the world, except from Australia and New Zealand. Habitat: Lives in lakes, ponds and swamps, provided there is plenty of aquatic vegetation. May be found even in very polluted places and brackish water. Diet: Feeds on vegetables and aquatic insects. Usually dives to catch the food. When it does not dive it waters the food before swallowing. Reproduction: The nest is built among the aquatic vegetation. Th...

Programa sobre a profissão limnologista. Profissional que estuda os ambientes aquáticos de água doce.

Guia do professor desenvolvido pelo projeto EMBRIAO sobre o tema: A origem da diversidade. Este guia aborda os seguintes produtos: (Ã�udio): - Entrevista: Biodiversidade - Ciênca em destaque: Biodiversidade (Experimentos): - Observação da diversidade em ambiente aquático - aulas 1, 2 e 3 (Softwares): - DNA: Replicação - DNA: Transcrição - DNA: Mutação - Qual é a palavra? A origem da diversidade (Vídeos): - Seres vivos: A vida - Seres vivos: A vida microscópica - Diversidade