Vegetation of Eurasia from the last glacial maximum to present: Key biogeographic patterns

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F17%3A00478174" target="_blank" >RIV/67985939:_____/17:00478174 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.quascirev.2016.11.022" target="_blank" >http://dx.doi.org/10.1016/j.quascirev.2016.11.022</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.quascirev.2016.11.022" target="_blank" >10.1016/j.quascirev.2016.11.022</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Vegetation of Eurasia from the last glacial maximum to present: Key biogeographic patterns

Popis výsledku v původním jazyce

Continental-scale estimates of vegetation cover, including land surface propertzies and biogeographic trends, reflect the response of plant species to climate changes over the past millennia. These estimates can help assess the effectiveness of simulations of climate change using forward and inverse modelling approaches. With the advent of trasient and contiguous time-slice palaeoclimate simulations, vegetation datasets with similar temporal qualities are desirable. We collated fossil pollen records for the period 21,000-0 cal yr BP (kyr cal BP, calibrated ages) for Europe and Asia north of 40°N, using extant datasbases and new data, we filtered records for adequate dating and sorted the nomenclature to conform to a consistent yet extensive taxon list. Form this database we extracted pollen spectra representing 1000-year time-slices from 21 kyr cal BP to present and used the biomization approach to define the most likely vegetation biome represented. Biomes were mapped for the 22 time slices, and key plant functional types (PFTs, the constituents of the biomes) were tracked thoungh time. An error matrix and index of topographic complexity clearly showed that the accuracy of pollen-based biome assignments (when compareted with modern vegetation) was negatively correlated with topographic complexity, but modern vegetation was nevertheless effectively mapped by the pollen, despite moderate levels of misclassification for most biomes. The pattern at 21 ka is of herb-dominated biomes across the whole region. From the onset of deglaciation (17-18 kyr cal BP), some sites in Europe record forest biomes, particularly the south, and the propostion of forest biomes gradually increases with time through 14 kyr cal BP. During the same period, forest biomes and steppe or tundra biomes are intermixed across the central Asian mountains, and forest biomes occur in coastal Pacific areas.

Název v anglickém jazyce

Vegetation of Eurasia from the last glacial maximum to present: Key biogeographic patterns

Popis výsledku anglicky

Continental-scale estimates of vegetation cover, including land surface propertzies and biogeographic trends, reflect the response of plant species to climate changes over the past millennia. These estimates can help assess the effectiveness of simulations of climate change using forward and inverse modelling approaches. With the advent of trasient and contiguous time-slice palaeoclimate simulations, vegetation datasets with similar temporal qualities are desirable. We collated fossil pollen records for the period 21,000-0 cal yr BP (kyr cal BP, calibrated ages) for Europe and Asia north of 40°N, using extant datasbases and new data, we filtered records for adequate dating and sorted the nomenclature to conform to a consistent yet extensive taxon list. Form this database we extracted pollen spectra representing 1000-year time-slices from 21 kyr cal BP to present and used the biomization approach to define the most likely vegetation biome represented. Biomes were mapped for the 22 time slices, and key plant functional types (PFTs, the constituents of the biomes) were tracked thoungh time. An error matrix and index of topographic complexity clearly showed that the accuracy of pollen-based biome assignments (when compareted with modern vegetation) was negatively correlated with topographic complexity, but modern vegetation was nevertheless effectively mapped by the pollen, despite moderate levels of misclassification for most biomes. The pattern at 21 ka is of herb-dominated biomes across the whole region. From the onset of deglaciation (17-18 kyr cal BP), some sites in Europe record forest biomes, particularly the south, and the propostion of forest biomes gradually increases with time through 14 kyr cal BP. During the same period, forest biomes and steppe or tundra biomes are intermixed across the central Asian mountains, and forest biomes occur in coastal Pacific areas.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10618 - Ecology

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Quaternary Science Reviews

ISSN

0277-3791

e-ISSN

—

Svazek periodika

157

Číslo periodika v rámci svazku

FEB 1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

18

Strana od-do

80-97

Kód UT WoS článku

000393936200006

EID výsledku v databázi Scopus

2-s2.0-85007348363