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OBIS. Current situation. Working on new IT platform Present technology 8 years old Data ingestion going fine Including data quality Position, time Taxonomy Web site well visited. Number of records (M). Number of datasets. Average size dataset (K). Web statistics. Data statistics. - PowerPoint PPT Presentation
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OBISOBIS
Current situationCurrent situation
•Working on new IT platform•Present technology 8 years old
•Data ingestion going fine•Including data quality
•Position, time•Taxonomy
•Web site well visited
Number of records (M)Number of records (M)
0.00
2.00
4.00
6.00
8.00
10.00
12.00
14.00
16.00
18.00
Apr-01 Sep-02 Jan-04 May-05 Oct-06 Feb-08 Jul-09
Number of datasetsNumber of datasets
0
100
200
300
400
500
600
Apr-01 Sep-02 Jan-04 May-05 Oct-06 Feb-08 Jul-09
Average size dataset (K)Average size dataset (K)
0
20
40
60
80
100
120
140
160
180
Apr-01 Sep-02 Jan-04 May-05 Oct-06 Feb-08 Jul-09
Web statisticsWeb statistics
Data statisticsData statistics
0
20000
40000
60000
80000
100000
120000
Mar-06 Oct-06 Apr-07 Nov-07 Jun-08 Dec-08 Jul-09
Analysis of contentAnalysis of content
•First preliminary analyses•Has to take into account huge bias
•Geography•Mostly coastal•Mostly northern hemisphere
•Taxonomy•Presence-only•‘Safety in numbers’
Number of recordsNumber of records
For known species most important to your project, what major discoveries have been made about their range or distribution? What is least known with regards to their distribution that you
would like to know?
Number of speciesNumber of species
Hurlbert’s index (es(50))Hurlbert’s index (es(50))
Large marine ecosystemsLarge marine ecosystems
‘Age’ of record – trends study‘Age’ of record – trends study
1
10
100
1,000
10,000
100,000
1,000,000
1600 1700 1800 1900 2000 2100
Latitudinal gradient ES(50)Latitudinal gradient ES(50)
0
10
20
30
40
50
60
-90 -60 -30 0 30 60 90
Marine fish to be discoveredMarine fish to be discovered
Mora et al (2007). The completeness of taxonomic inventories for describing the Mora et al (2007). The completeness of taxonomic inventories for describing the global diversity and distribution of marine fishes. Proc. R. Soc. B, published on lineglobal diversity and distribution of marine fishes. Proc. R. Soc. B, published on line
Percentage completeness 1 100
How good is the data?How good is the data?
•Data are from many sources•Inconsistent become apparent
•Differences in names used•Mistakes in transformations
•Decimalising lat/lon•Needs quality control•Data collection driven by priorities
•Sampling bias; resolution
Quality controlQuality control
•Check formal record structure•Check date/time•Check position
•In the ocean?•In dataset bounding box?
•Check taxonomy•Problem: no reference list
New species are discoveredNew species are discovered
Data from http://marinespecies.org
Problems with taxonomic namesProblems with taxonomic names
• MisspellingsMisspellings• Mixed with other informationMixed with other information
• Gadus sp.; Gadus sp. A; Gadus sp. a…Gadus sp.; Gadus sp. A; Gadus sp. a…• Gadus morhua?; Gadus cfr morhua; Gadus aff. Gadus morhua?; Gadus cfr morhua; Gadus aff.
morhua…morhua…• Gadus morhua juv.; Gadus morhua juvenile; Gadus Gadus morhua juv.; Gadus morhua juvenile; Gadus
morhua juveniles…morhua juveniles…
• Mixed with ecological/sampling informationMixed with ecological/sampling information
• Also variation in classification and author stringAlso variation in classification and author string
Examples of variationExamples of variation
• Callorhinchus callorynchusCallorhinchus callorynchus• Cirrhinus or CirrhinaCirrhinus or Cirrhina
• Cirrhinus cirrhosa or C. cirrhosusCirrhinus cirrhosa or C. cirrhosus• Cirrhina cirrhosa or C. cirrhosusCirrhina cirrhosa or C. cirrhosus
• Microsoft helping a bit:Microsoft helping a bit:• Calinectes ornatus Calinectes ornatus Ordway, 1863 Ordway, 1863
Calinectes ornatus Calinectes ornatus Ordway, 1864 … Ordway, 1864 … Calinectes ornatus Ordway, 1891Calinectes ornatus Ordway, 1891
Number of ‘species’ in OBISNumber of ‘species’ in OBIS
• 147K unique ‘scientific names’147K unique ‘scientific names’• 132K ‘clean names’132K ‘clean names’
• Approx 10% reduced (from 147K)Approx 10% reduced (from 147K)
• 80K match with WoRMS80K match with WoRMS• 11K known synonyms or misspellings11K known synonyms or misspellings• Non-matches assumed validNon-matches assumed valid
• 121K ‘valid names’121K ‘valid names’• Approx 20% reducedApprox 20% reduced
Reduction of es(50) per 5d squareReduction of es(50) per 5d square
0
5
10
15
20
25
30
35
40
45
50
0 5 10 15 20 25 30 35 40 45 501
10
100
1000
10000
Same for fishSame for fish
0
5
10
15
20
25
30
35
40
45
50
0 5 10 15 20 25 30 35 40 45 50
1
10
100
1000
0
0.05 0.1
0.15 0.2
0.25 0.3
0.35 0.4
0.45 0.5
0.55 0.6
General patterns indistinguishableGeneral patterns indistinguishable
All
Fish
Dirty Clean
CompletenessCompleteness
0
10000
20000
30000
40000
50000
60000
70000
80000
90000
1750 1800 1850 1900 1950 2000 2050
0
10000
20000
30000
40000
50000
60000
70000
80000
90000
1950 1960 1970 1980 1990 2000 2010
How to get OBIS data?How to get OBIS data?
• Web siteWeb site• DiGIR providerDiGIR provider• OGC-compliant web servicesOGC-compliant web services
• Exist on experimental basisExist on experimental basis
• Google baseGoogle base
• Ask us!Ask us!• Custom data extractionCustom data extraction
Data from field projectsData from field projects
• Not always easy to ‘trace’Not always easy to ‘trace’• Not well documented what is CoML data, aand which Not well documented what is CoML data, aand which
field project it belongs tofield project it belongs to• Needs mechanism to better documentNeeds mechanism to better document
• Part of the metadata?Part of the metadata?
• Exercise was done at iOBISExercise was done at iOBIS• Spreadsheet will be made availableSpreadsheet will be made available• Please checkPlease check• In general, good agreement with our understanding In general, good agreement with our understanding
and information from annual reportsand information from annual reports
Field projectsField projects
Acronym# datasets
as per group# records
as per group# datasets
in OBIS# records
in OBIS
CeDaAMar 10 9018 1 9017
CAML 64 625000 58 1091837
ArcOD 18 70197 18 70061
CoMargE 2 3000+ 16 67067
POST 1 ? 1 114161
CReefs 8 203929 8 203929
ICoMM 22 5511 1 5511
Mar-ECO 1 ? 1 2744
NaGISA 1 13138 1 23552
GoMA 4 203130 4 33740
CenSeam 77 14233 1 19488
TOPP 0 0 0 0
ChEss 1 2593 1 2593
CMarZ 1 114 1 114
HMAP 10 319,111 1 260182
FMAP 2 144346 2 144346
How to get data in OBIS?How to get data in OBIS?
• Dialogue ongoing with all major providersDialogue ongoing with all major providers• All field projectsAll field projects• Regional OBIS Nodes (RONs)Regional OBIS Nodes (RONs)• FishBase, OBIS SEAMAP…FishBase, OBIS SEAMAP…
• iOBIS needs time to ingest dataiOBIS needs time to ingest data• Quality control…Quality control…• Data cycle Data cycle
• Lag in data availability ~3 monthsLag in data availability ~3 months• Depending on quality of the dataDepending on quality of the data