The R/ETS a io: Whe e we a e now
The ela ionship be ween espi a ion and he ac i i y o
he elec on anspo sys em (ETS) is an un esol ed issue
ha begs mo e unde s anding, because measu ing ETS
ac i i y o i s equi alen , po en ial espi a ion, is he as es
and mos synop ic way o assessing espi a ion (R) in ocean
space. Fu he mo e, his opic is an en y poin o he
unde s anding o espi a o y con ol. As we know om he
a iabili y in espi a ion measu emen s, in Kleibe ’s Law, and
in pas R/ETS s udies, many ac o s can al e espi a ion.
Tempe a u e, nu ien -limi a ion, age, size, empo al
pe iodici y, and ac i i y le els a e among hese ac o s. To
model o o measu e espi a ion accu a ely, hese ac o s need
o be unde s ood.
He e we p esen ou p og ess in bo h he ield and in he
labo a o y in measu ing and in e p e ing R and ETS
measu emen s and hei ela ionship. We e iew
measu emen s made on di e en size classes o ma ine
zooplank on om many di e en oceanog aphic a eas (Cen al
A lan ic, No h Paci ic, Cana y Islands, Bal ic Sea, and
An a c ica) and on a spec um o species om 5 phyla o
zooplank on plus p o ozoans and bac e ia, (Fig. 1, Table 1).
We ind ha he a iabili y in he ela ionship is associa ed
wi h o ganism size, age, nu i ional s a e, and empe a u e.
These indings a e helping us unde s and he a iabili y in he
R/ETS a io ha we obse e in he sea.
Conclusions:
The main ac o s a ec ing he Respi a ion / ETS a io a e:
1.- The nu i ional s a e. Well- ed o ganisms ha e highe a ios han s a ed o ganisms.
2.- The age o o ganisms, ju eniles ha e a ios highe han adul s.
Ano he ac o migh be he empe a u e, he a ios seems o be highe a lowe empe a u es
M. Gómez, I. Fe nández-U uzola, A. He e a, F. Maldonado-U ibe, I. Ma ínez,
N. Osma and T. Packa d
Biological Oceanog aphy Labo a o y, Depa men o Biology. Uni e si y o Las Palmas de G an Cana ia.
Zooplank on samples
Lep omysis ling u a
A emia sp.
Oxy his ma ina
Tempe a u e e ec
Zooplank on mix
S a a ion e ec
Oxy his ma ina
Lep omysis ling u a
0,0
0,2
0,4
0,6
0 5 10 15 20 25 30
RRESPIRATION/ETS
TIME (hou s)
R/ETS a io as a unc ion o cul u e age
R/ETS
Py u a e
Pseudomonas nau ica
on py u a e
0
2
4
6
8
10
12
14
0,0 0,1 0,2 0,3 0,4 0,5 0,6
Respi a ion/ ETS ac i i y
[Py u a e]/36
R/ETS = ( ood a ailabili y)
Pseudomonas nau ica
on py u a e
R/ETS (Oxy his ma ina)
y = 0,9414x - 0,3444
R² = 0,9811
-3
-2
-1
0
1
2
3
-2 -1 0 1 2 3
log (Respi a ion animal-1 (ml O2h-1))
log (F(ml O2h-1 animal-1))
log (Respi a ion) s log (F)
R/ETS (Zooplank on mix Paci ic )
R/ETS (Vib io na iegans )
R/ETS (Zooplank on mix Cana y Islands)
R/ETS (Lep omysis ling u a)
R/ETS (A emia sp.)
Sample R/Ф Loca ion
Vib io na iegans 0,30 ± 0,07
(n=9)
Labo a o y cul u es
Oxy his ma ina 0,53 ± 0,52
(n=27)
Labo a o y cul u es
A emia salina 0,89 ± 0,23
(n=31)
Labo a o y cul u es
Lep omysis ling u a 0,73 ± 0,18
(n=14)
Labo a o y cul u es (well
ed)
Lep omysis ling u a 0,41 ± 0,19
(n=35)
Labo a o y cul u es
(s a ed)
Calanus paci icus 0.59 ± 0.19
(n=2)
No h Paci ic
Copepods 0.71 ± 0.40
(n=6)
No h A lan ic (Eas )
No h Paci ic
(T opical Eas )
Zooplank on 0.50 ± 0.17
(n=146)
No h A lan ic (Eas )
No h Paci ic
Zooplank on
(100-200 µm)
0.94 ± 0.47
(n=13)
Bal ic Sea
1.59 ± 0.88
(n=2)
Cana y Islands
0.95 ± 0.98
(n=10)
G an Cana ia
(Onsho e)
Zooplank on
(200-500 µm)
0.42 ± 0.19
(n=16)
Bal ic Sea
0.77 ± 0.28
(n=60)
Cana y Islands
0.65 ± 0.39
(n=42)
G an Cana ia
(Lab. Expe imen s)
Zooplank on
(500-1000 µm)
0.40 ± 0.06
(n=4)
Bal ic Sea
0.57 ± 0.17
(n=6)
Cana y Islands
0.35 ± 0.06
(n=4)
T opical A lanc ic
Zooplank on
1000 µm
0.19 ± 0.11
(n=20)
An a ica
Fig. 1