Novak, Joseph B; Prokopenko, Alexander A; Tarasov, Pavel E; Russell, James M; Lindemuth, Emma; Shichi, Koji; Kashiwaya, Kenji; Peck, John A; Vachula, Richard; Swann, George E A; Polissar, Pratigya J: Dominant biomes and plant functional type affinity scores derived from published pollen data from Baikal Drilling Project core materials [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.983539 (dataset in review), In: Novak, JB et al.: Paleotemperature and Vegetation Records from Lake Baikal, Russia, Over the Last 8.6 Million Years [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.986603 (dataset in review)
Abstract:
An 8.6-million-year record of dominant biomes and plant functional type affinity scores derived from published pollen data from Baikal Drilling Project core materials. We reanalyzed published pollen spectra (n = 993) from the Lake Baikal drill cores (Maki et al. 2003, doi:10.1007/978-4-431-67859-5_8; Hase et al. 2002 [no doi available]; Kawamuro et al. 2000, doi:10.1016/B978-044450434-0/50009-3) using the methods of Prentice et al. (1996, doi:10.1007/BF00211617) to identify the most likely dominant biome represented by each sample. Pollen spectra with fewer than 90 grains were excluded from consideration, leaving 841 spectra.
Keyword(s):
References:
Kawamuro, Kimiyasu; Shichi, Koji; Hase, Yoshitaka; Iwauchi, A; Minoura, Koji; Oda, Takefumi; Takahara, Hikaru; Sakai, H; Morita, Yoshimune; Miyoshi, Norio; Kuzmin, M I (2000): Forest-desert alternation history revealed by the pollen-record in lake baikal over the past 5 million years. In: Lake Baikal, Elsevier, 101-107, https://doi.org/10.1016/B978-044450434-0/50009-3
Maki, Takeshi; Hase, Yoshitaka; Kawamuro, Kimiyasu; Shichi, Koji; Minoura, Koji; Oda, Takefumi; Miyoshi, Norio (2003): Vegetation Changes in the Baikal Region during the Late Miocene Based on Pollen Analysis of the BDP-98-2 Core. In: Kashiwaya, K (eds.), Long Continental Records from Lake Baikal, Springer Japan, Tokyo, 123-135, https://doi.org/10.1007/978-4-431-67859-5_8
Prentice, Iain Colin; Guiot, Joel; Huntley, Brian; Jolly, Dominique; Cheddadi, Rachid (1996): Reconstructing biomes from palaeoecological data: a general method and its application to European pollen data at 0 and 6 ka. Climate Dynamics, 12(3), 185-194, https://doi.org/10.1007/BF00211617
Funding:
National Science Foundation (NSF), grant/award no. NNA 22-02918: Rainfall, Ecosystems, and Fire in Warm Late Neogene Climates of the Lake Baikal Region
Coverage:
Median Latitude: 53.555985 * Median Longitude: 108.302200 * South-bound Latitude: 53.444800 * West-bound Longitude: 108.243400 * North-bound Latitude: 53.667170 * East-bound Longitude: 108.361000
Minimum DEPTH, sediment/rock: 6.390 m * Maximum DEPTH, sediment/rock: 635.160 m
Event(s):
Comment:
Methods:
We reanalyzed published pollen spectra (n = 993) from the Lake Baikal drill cores (Maki et al. 2003; Hase et al. 2002; Kawamuro et al. 2000) using the methods of Prentice et al. (1996) to identify the most likely dominant biome represented by each sample.
All pollen grains were counted by the same analytical team (Maki et al. 2003; Hase et al. 2002; Kawamuro et al. 2000). Pollen spectra with fewer than 90 grains were excluded from consideration, leaving 841 spectra.
The original pollen counts are archived electronically by the Lake Biwa Museum.
Each pollen taxon was assigned to a plant functional type (PFT) based on the biology of the plant species as in the methodology of Prentice et al. (1996).
Some taxa were assigned to more than one PFT because they either contain several species with different biological characteristics or different growth habits depending on their environment (Prentice et al. 1996).
Likewise, some plant functional types are assigned to more than one biome (Prentice et al. 1996).
Each pollen sample was assigned affinity scores by the following formula.
Aik = Σδi√(max[0, pjk -θj])
Aik is the affinity of a given pollen sample k for biome i; δij is the entry in the biome-taxon matrix for biome i and taxon j; pjk are the pollen taxon percentages counted in the sample, and θj is a universal threshold pollen percentage of 0.5% to minimize the influence of single pollen grains on PFT affinity scores.
Pollen samples were then assigned to the biome with the highest sum of affinity scores.
Taxa were assigned to plant functional types and biomes based on the published matrices used in regional studies (see Tarasov et al. 2011; Takahara et al. 2010; Takahara et al 2000; Gotanda et al. 2002; Prokopenko et al. 2010; Brigham-Grette et al. 2013).
Further funding information:
* PR 1414/1-1 Deutsche Forchungsgemeinshaft Priority Program "ICDP" 1006
* Geological Society of America Continental Drilling Science Division Graduate Student Grant 13282-21
* Sigma Xi Grants in Aid of Research G20211001-101
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Novak, Joseph B | |||
| 2 | Latitude of event | Latitude | Novak, Joseph B | |||
| 3 | Longitude of event | Longitude | Novak, Joseph B | |||
| 4 | Section | Sect | Novak, Joseph B | |||
| 5 | DEPTH, sediment/rock | Depth sed | m | Novak, Joseph B | Geocode | |
| 6 | Age | Age | Ma | Novak, Joseph B | ||
| 7 | Pollen, total | Pollen tot | #/cm3 | Novak, Joseph B | See description in dataset comment | |
| 8 | Pollen, terrestrial | Pollen ter | # | Novak, Joseph B | See description in dataset comment | |
| 9 | Biome score | BS | Novak, Joseph B | See description in dataset comment | Tundra | |
| 10 | Biome score | BS | Novak, Joseph B | See description in dataset comment | Cold deciduous forest | |
| 11 | Biome score | BS | Novak, Joseph B | See description in dataset comment | Taiga | |
| 12 | Biome score | BS | Novak, Joseph B | See description in dataset comment | Cool conifer forest | |
| 13 | Biome score | BS | Novak, Joseph B | See description in dataset comment | Temperate deciduous forest | |
| 14 | Biome score | BS | Novak, Joseph B | See description in dataset comment | Cool mixed forest | |
| 15 | Biome score | BS | Novak, Joseph B | See description in dataset comment | Temperate conifer forest | |
| 16 | Biome score | BS | Novak, Joseph B | See description in dataset comment | Warm mixed forest | |
| 17 | Biome score | BS | Novak, Joseph B | See description in dataset comment | Steppe | |
| 18 | Biome score | BS | Novak, Joseph B | See description in dataset comment | Desert | |
| 19 | Landscape openness score | LOS | Novak, Joseph B | See description in dataset comment | ||
| 20 | Biome | Biome | Novak, Joseph B | See description in dataset comment | Four letter tag for the dominant biome in the pollen sample | |
| 21 | Dominant biome ID | Dom biome ID | Novak, Joseph B | See description in dataset comment | Numerical representation of the dominant biome for ease of plotting the data. | |
| 22 | Score | Score | Novak, Joseph B | See description in dataset comment | ||
| 23 | Score, functional type | Score FT | Novak, Joseph B | See description in dataset comment | Warm-temperate broad-leaved evergreen plant | |
| 24 | Score, functional type | Score FT | Novak, Joseph B | See description in dataset comment | Cool temperate summer green plant |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
16813 data points
Download Data (login required; moratorium until 2027-07-01)
View dataset as HTML (shows only first 2000 rows)