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Last modified
7/14/2009 5:01:46 PM
Creation date
5/22/2009 6:18:25 PM
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UCREFRP
UCREFRP Catalog Number
7773
Author
Many
Title
Hydroecologie Appliquee
USFW Year
1993
USFW - Doc Type
2(5)
Copyright Material
YES
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34 <br />F. Degiorgi et al. <br />VARIATION DE L'EFFECTIF DES CAPTURES DE <br />COREGONE SUR REMORAY EN ETE <br />aq <br />aHecllN munpNque4 <br />36 <br />ceplul6a <br />25 <br />15 <br />1 <br />10 } eHacpf par spquen? <br />5 • m0yersne aagressrve <br />q Bpque <br />0 1 2 3 d 5 6 ] <br />VARIATION DE L'EFFECTIF DES CAPTURES DE <br />PERCNE SUR REMORAY EN ETE <br />20 <br />ellaclils numdrlquea <br />capturpa ,pp + <br />40 + 0_1 par a9quence <br />? . moram?a arare$%iae } <br />+ Sequence <br />0 1 2 d 4 5 6 ] <br />VARIATION DE L'EFFECTIF PONDERAL GLOBAL <br />CAPTURE SUR REMORAY EN ETE <br />ag665 <br />eHeclils ponEpreux <br />up'-.l en g) + <br />30000 _-___-_ <br />+ <br />20000 + <br />1 W00 }eXeNtpar segvencx <br />mayenne progressive <br />Spquenus <br />D 2 3 d 5 6 <br />Fig. 2. - Stabilisation des resultats obtenus par <br />repetition de 1'effort de peche global standard <br />(Iste, 1992). <br />Fig. 2. - Statistical stabilisations of the results <br />obtained by repetition of standard fishing effort <br />(Iste, 1992). <br />Par ailleurs la difference d'activite <br />du poisson et la dynamique des po- <br />pulations (en particulier en ce qui <br />concerne le recrutement des pre- <br />mieres classes maillables) justifient <br />I'interet d'appliquer ce protocole de fa- <br />qon tri-saisonniere. La comparaison, <br />sur la figure 3, des structures des <br />echantillons de perches (Perca fluvia- <br />tilis) capturees dans la Retenue du <br />i <br />auroMHFm ? <br />o t? ,o e r 1¢ e a a zs 3 T a s v x x® ce a e g v <br />I <br />PHIMFMPA 9Y <br />?ee? lum <br />e i s a? ? I6 a m a z m. a <br />a <br />mvr i <br />ak lei <br />r s? ,z r 1c s m u x? a u a .z .? S e b w LL Y N n <br />,gym <br />I <br />pUTOMNE ai I <br />,77_7-t ,s ?s a m Bx x, m R b tt .? b x m u u s e a <br />Fig. 3. - Structure taille-frequence des echan- <br />tillons saisonniers de perches (Percy fluviatilis) <br />captures sur le Vieux pre au moyen d'un pro- <br />tocole standard d'echantillonnage par filets ver- <br />ticaux (MNEP, 1992). <br />Fig. 3. - Size-frequence structure of the sam- <br />ples of Perch (Perca fluviatilis) caught in the ar- <br />tificial pond of ,Vieux Pre,, (1990-1991) with <br />vertical gill-nets used according to a standard <br />sampling procedure (MNEP, 1992). <br />Vieux Pre (Meurthe et Moselle, <br />450 ha pour 65 metres de profondeur <br />maximale) au cours de 4 campagnes <br />saisonnieres successives illustre ce <br />propos et met en evidence la vitesse <br />de croissance des premieres classes <br />d'age et les problemes periodiques de
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