Nico Franz - Arizona State University Neil Cobb - Northern Arizona University Katja Seltmann - American Museum of Natural History With special thanks to Edward Gilbert (ASU) & Paul Heinrich (NAU) The Current State of Arthropod Biodiversity Data: Addressing Impacts of Global Change 30 th Annual Meeting, SPNHC 2015 May 20 th , 2015 Tri-Trophic Thematic Collection Network
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Franz cobb seltmann 2015 spnhc current state of arthropod biodiversity data
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Nico Franz - Arizona State UniversityNeil Cobb - Northern Arizona University
Katja Seltmann - American Museum of Natural History
With special thanks to Edward Gilbert (ASU) & Paul Heinrich (NAU)
The Current State of Arthropod Biodiversity Data:
Addressing Impacts of Global Change
30th Annual Meeting, SPNHC 2015May 20th, 2015
Tri-Trophic Thematic Collection Network
The Current State of Arthropod Biodiversity Data:Addressing Impacts of Global Change
Focus on North America – priorities: United States > Canada > Mexico
How many species can we model future distributions under climate change? (n > 30)
Major taxonomic & functional groups
Biogeography
Collection timeline
Digitization in North American research collections
Promoting observable species (identification does not require dissection [etc.])
Specimen estimates for North American research collections (current & projected)
Arthropods comprise ~ 70% of described species, yet only 15% of climate impact studies
Cannot predict global change impacts without knowing existing species distributions
~ 10% of North American arthropod species have “enough” occurrence data (n = 30 localities)
Arthropod occurrence data reside primarily in research collections
460-600 million specimens in collections worldwide?, < 50 million digitized (~ 10%)
Race Against Time: a Few Key Observations
Mea
n #
of O
ccur
renc
es /
Spe
cies
0.0
2.0e+4
4.0e+4
6.0e+4
8.0e+4
1.0e+5
1.2e+5
2,896
19,150
110,000100,000
20,000
40,000
60,000
80,000
0
# N
orth
Am
eric
an S
peci
es
0
500
1000
1500
2000
2500
30003,081
39142
Vertebrates Plants Arthropods
North American Biodiversity
North American Digitization
Biodiversity versus "Research Ready"
1. Arthropods are mega-diverse
2. Research-Ready ≥ 30 occurrences per species
Vertebrates < Plants < Arthropods
Vertebrates are excellent
Plants are credible
Arthropods are way behind
Occurrences are not evenly distributed 10% of arthropod species are research-ready