Ecossistema
Autor: Felipe Aires | Publicado: 2011-09-23T20:14:00-07:00

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&nbsp;&nbsp;&nbsp;&nbsp; Ecossistema é o conjunto formado por todos os fatores bióticos e abióticos que atuam simultaneamente sobre determinada região.
&nbsp; &nbsp; &nbsp;&nbsp; Fatores Bióticos:&nbsp;As diversas populações de animais, plantas e bactérias
Fatores Abióticos:&nbsp;São os fatores externos como a água, o sol, o solo, o gelo, o vento.
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; Temos ecossistemas terrestres e aquáticos. Um Ecossistema é caracterizado pela diversidade de espécies, inclui todos os organismos que nele vive. Dentro de um ecossistema existem vários tipos de consumidores, que juntos formam uma cadeia alimentar.
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; As dimensões de um ecossistema podem variar consideravelmente desde uma poça de água até a totalidade do planeta terra que pode ser considerado como um imenso ecossistema composto por todos os ecossistemas existentes (ecosfera).
&nbsp; &nbsp; Mas não se deve confundir “ecossistema” com “bioma”. O bioma é geograficamente mais abrangente e é predominantemente definido de acordo com um conjunto de vegetações com características semelhantes.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Os ecossistemas são classificados de duas formas: em ecossistemas terrestres e ecossistemas aquáticos. Ambos possuem o funcionamento parecido com apenas a diferença óbvia da quantidade de água entre um e outro o que faz com que comportem formas de&nbsp;vida&nbsp;completamente diferentes, embora algumas possam compartilhar ou migrar de um meio para o outro. Aos locais onde os dois tipos de ecossistemas se encontram dá-se o nome de “wetlands”, no termo em inglês, que podemos chamar de “terras alagadas”. São regiões como o Pantanal Mato-grossense e as regiões alagadas da Amazônia.