general assembly meeting – sa session | crete oct. 2014 fixo3 service activity information pap –...
TRANSCRIPT
General Assembly Meeting – SA Session | Crete Oct. 2014
FixO3 Service Activity information
PAP – NORTH ATLANTIC BENTHIC BIODIVERSITYEcology & ecosystem functionSA starting date: StartedScientific contact person: Henry Ruhl ([email protected]) & Brian Bett ([email protected]) Data manager: M Pagnani ([email protected] )NOC-led, NHM, U Glasgow, et al. contribute
General Assembly Meeting – SA Session | Crete Oct. 2014
PAP – NORTH ATLANTIC BENTHIC BIODIVERSITY
Observations, archiving and provision of dataVariables the service activity is based on (referencing 2011 onward)• Megafauna trawl analysis (2011 analysed, samples collected in 2013)• Megafauna image analysis (2011-13 analysed, 2014 samples collected)• Macrofauna analysis (2011-13 analysed, 2014 samples collected)• Foraminifera meiofauna analysis (2011 analysed, 2012-14 samples collected)• Prokaryotic bacteria analysis (2011-14 samples collected)• Biodiversity indicator analysis (ongoing)
Data archive• BODC• Main site page: www.noc.ac.uk/papData access• [current data policy] - transitioning to ‘FixO3 data principles’• [authentication] - ?• [monitoring of data usage] – needs improvement
General Assembly Meeting – SA Session | Crete Oct. 2014
PAP – NORTH ATLANTIC BENTHIC BIODIVERSITY
SA nature and readinessNature of the products provided and added value• Yearly time series • Open access in a timely manner, derived products/indicatorsIssues to solve until SA provision• Relates to ongoing sampling. Sample processing ongoing…new hire for
Prokaryotic work starts this Dec.Problems and solutions, support needed• Would like to eventually create comparable muliti-observatory indicators
that could persist after FixO3• Would expect that after the first collection of SA data, that we could look for
ways to harmonize approaches to the above goal.
General Assembly Meeting – SA Session | Crete Oct. 2014
PAP – NORTH ATLANTIC BENTHIC BIODIVERSITY
y = 0.02x-1.11
r² = 0.810.000
0.005
0.010
0.015
0.020
0.025
0.030
0.035
0.040
0 1 2 3Mean individual respiration rate
(mg 02 m-2 d-1)
B) PAP
y = 0.39x-0.82
r² = 0.400.0
0.2
0.4
0.6
0.8
1.0
1.2
0.0 0.3 0.6 0.9 1.2
Tota
l den
sity
(TA
D,
ind
. m-2
)
Mean individual respiration rate(mg 02 m-2 d-1)
A) Sta. MJ'
Ɣ 0.20-0.29
Ɣ 0.30-0.39
Ɣ 0.40-0.49
Ɣ 0.50-0.59
Ɣ 0.60-0.69
Ɣ 0.70-0.79
Ruhl et al, Ecology 2014
Megafauna Example – Evidence for compensatory behaviour in community structuring •The hypothesis of ‘compensatory dynamics’ posits that when resource levels are fixed, total abundance is constant, and increases in abundance of one taxon are compensated for by reductions in another. •Specifically, given a fixed resource input and constant temperature, the total number of individuals (N) in a community is inversely related to the mean individual metabolic rate (B), where N α B -1( Right Fig.)•Deviations from this (as noise around line in right figure) likely relate to shifting resource availability.
J’ = evenness
General Assembly Meeting – SA Session | Crete Oct. 2014
PAP – NORTH ATLANTIC BENTHIC BIODIVERSITY
Foraminifera variation over time
Gooday et al., 2010 DSR II
General Assembly Meeting – SA Session | Crete Oct. 2014
PAP – NORTH ATLANTIC BENTHIC BIODIVERSITY
Macrofauna (polychaete) variation over time
0
150
300
450
600
750
900
SM
T
SD
T
SB
Mx
PM
J
PM
x
BM
x
OM
J
BS
x
SS
T
Me
an
de
nsi
ty(i
nd
. pe
r m²)
C) PAP 1994 LD
BM
x
SM
T
SD
T
PM
J
SB
Mx
PM
x
OM
J
BS
x
SS
T
D) PAP 1998 HD
Laguionie- Marchais et al., 2013 DSRI
PAP
0
500
1000
1500
2000
2500
Me
an d
ensi
ty (i
nd. p
er m
²) Ŷ
A)
-3
-2
-1
0
1
2
Clim
atic in
de
x ---
B)
0.50
0.55
0.60
0.65
0.70
0.75
0.80
0.85
0.90
19
90
19
92
19
94
19
96
19
98
20
00
20
02
20
04
20
06
Pie
lou
's eve
ne
ss (J) Ο
F)
Feeding guild rank abundance distributions at two different overall densities