5PATIAL
ANO
TEMPORAL VARIATION
IN
Ol5TRIBUTION
OF
Gelidíum cana íensís (RHOOOPHYTA)
A.
Lindg en
N.
Bouza-Ca eI02,
P.
Abe g1 and P.A.505a2•
10epa men
o
Ma ine Bo any, Gó ebo g Uni e si y, Ca l Sko sbe gs Ga a 22, S- 413 19 Gó ebo g Sweden
20epa amen o de Biología. Uni e sidad de Las Palmas, Campus Uni e si a io de Ta i a. 35017 Las
Palmas, Islas Cana ias, Spain
Obse a ion
o
spa ial and empo al a ia ion
in
he dis ibu ion and abundance
o
o ganisms is o en he
s a ing poin om which ques ions and hypo hesis
o
ecological p ocesses a ise. This s udy was designed
o
in es iga e spa ial and empo al a ia ion
o
Gelidium cana iensis a wo sho es
in
no he n G an Cana ia
du ing wo yea s. Spa ial scales a ied om some hund ed me e s (dis ance among sho es), 10 o
30
m
(dis ance among plo s) o less han me e s (dis ance be ween squa es). Gelidium indi iduals was de ined as
dis inc Gelidium clumps. The esul s show a signi ican di e ence
in
size
o
indi iduals be ween sho es bu
no
on
he smalle scales. No signi ican empo al a ia ion was ound. Fo s anding c op and densi y
(coun ed
on
squa es we e Gelidium was p esen , no coun ed o he o al sho e) he e we e
no
di e ences
on
ei he empo al o spa ial scales. Te aspo ophy ic and game ophy ic indi iduals we e also
dis inguished by iden i ying ep oduc i e s uc u es
in
he ield. Fo bo h yea s e aspo ophy es we e mo e
abundan al hough he majo pa
o
he popula ion consis s o ege a i e indi iduals. The esul s indica e a
s able popula ion s uc u e.
This wo k has been ca ied ou om he collabo a ion su ged
in
ambi
o
he Eu opean Communi y p ojec
"BIOGAP". MAST-III p og amo
27