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        <gco:CharacterString>La tourbi&#232;re de Mathon, site de 16 ha, est class&#233;e en R&#233;serve Naturelle depuis 1973. Elle
est g&#233;r&#233;e par le Centre Permanent d'Initiatives pour l'Environnement (CPIE) du Cotentin depuis
1988, sous la tutelle du Mus&#233;um National d'Histoire Naturelle de Paris. Le premier plan de gestion
a &#233;t&#233; mis en place en 1995 et a donn&#233; lieu &#224; de nombreux inventaires dont deux portant sur les
insectes et les araign&#233;es. Ils ont &#233;t&#233; r&#233;alis&#233;s par Philippe Fouillet (1991, 1998) l'un en 1989-91 et
l'autre en 1995-97. Ces &#233;tudes ont notamment permis de r&#233;aliser un &#233;tat initial du site par
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aquatiques et terrestres, Col&#233;opt&#232;res aquatiques et terrestres, Eph&#233;m&#232;res, N&#233;vropt&#232;res, M&#233;copt&#232;res, Dipt&#232;res et Hym&#233;nopt&#232;res. Elles ont &#233;galement permis de d&#233;finir des propositions permettant de mieux prendre en compte les invert&#233;br&#233;s dans les pratiques de gestion (FOUILLET et al., 2001, 2002).
Le nouveau plan de gestion 2003-2008 pr&#233;voit une poursuite de l'inventaire et des suivis entomologiques.
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- de poursuivre le suivi des Orthopt&#232;res des prairies situ&#233;es au sud du site, afin de mesurer l'influence du fauchage sur les populations d'invert&#233;br&#233;s.
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