Page 4 - Calvo_e_al_1995

distribUiion. altbough •ntermedìate btds have not beeo clwty specified In some :ue3S
(lsle of U•tica). Leat surface per shoot w:u also iclentifted u lhe mostlmporuuu varlab!e
(or diSiinguisbing among lhe 81WJ1$.

r

\

l ~fondello
2 Golfo di Castellammare
3 Punta Braa:c:no
4 Ustica
S San Nic:olal'Areoa
6 Western c:oast

PRlMARY PROOucrtON
Along lhe 1!.-estcm co:m or Sldly lhe rhì2.01m$ lUU1Ual mean primasy productioa.

obtained by lepidodllonological OJUI)-sis (P90ENT & Woe.T-MAR11Nl. 1990) of18
onhor:ropk rhiwmes, turned out 10 be (T~ble 2) amona lhe rughest valucs ~rved in
the Med.i1el'!lWall ~ (PERGS.I c!t PERGE!'oi-MAR'TL\'1. 1991). Al.llles.mJe tlmc, mc:m

growrh l'llle mnges berr."tCR 15,3 mm :md 17.l mm. empb:lsttjng Che lmpo<t:!11Ce and lhe

rolc orPosldDnia occanico mcadow In Ibis llrU. Moreover, rhimme$ prinEit)' produaion
c.lidn't exhibit slgniflcant \'afiQrions in lht e~plored temporul r:~t~ge (1980.1992),
confinning !be high Sl3bilicy of lhe me3dow along !be western ro3SI ofS"~eily.

REPROOUCTIVEPHENOLOGY
Oelecrion and dallo& of p~vious flowetin:s Since 198l. b:ned on !be n:m4ins or

Onwer Slllllcs (PER.Ge.'T ~~aL. 19119). allo\I.'Cd to calcubte nou.-.:ti11J rate in tbc }cafS

1987 (2.4~!. 1988 {2'iD), 1991 (1.3t.&l. 1992 (3~) alone tbc western co;ut or Skily.

l'lowering r.ue ruuiiS slmillli 10 tb111 directly e.umuted during l'l92 in tbe bay of San
Nlcol:l. IIC&r 1'3lrrmo (TOMASELLO a o/.. 1994), al!hoQ&b in tbe lsle of Matet~imo

OIORNAU! POTAI-1CO ITAUAKO - VOLUME 1~9, 1. !99S