A 90,000-year record of Afromontane forest responses to climate change

@article{Lzine2019A9R,
  title={A 90,000-year record of Afromontane forest responses to climate change},
  author={Anne-Marie L{\'e}zine and Kenji Izumi and Masa Kageyama and Gaston Achoundong},
  journal={Science},
  year={2019},
  volume={363},
  pages={177 - 181}
}
Ancient changes in the African tropics Long-term records of past vegetation change are key to understanding how climate change affects ecosystems, but data are scarce—especially in highly biodiverse regions in the tropics. Lezine et al. present a detailed 90,000-year pollen core from an upland crater-lake site in the west African tropical montane forest, which is important from conservation and biogeographic standpoints. The upper treeline moved in response to climate change during the… 

Topics from this paper

The recent colonisation history of the most widespread Podocarpus tree species in Afromontane forests.
TLDR
Despite the ancient and highly fluctuating history of podocarps in Africa revealed by palaeobotanical records, the extended distribution of current P. latifolius/milanjianus lineages is shown to result from a more recent history, mostly during the mid-late Pleistocene, when Afromontane forests were once far more widespread and continuous.
Individualistic evolutionary responses of Central African rain forest plants to Pleistocene climatic fluctuations.
TLDR
Present-day patterns of genetic structure are thought to be dictated by repeated expansion and contraction of TRFs into and out of refugia during Pleistocene climatic fluctuations, which implies a common response to past climate change.
Tectonics, climate and the diversification of the tropical African terrestrial flora and fauna
TLDR
This work critically review and synthesize African climate, tectonics and terrestrial biodiversity evolution throughout the Cenozoic to the mid‐Pleistocene, drawing on recent advances in Earth and life sciences.
Regional impacts of climate change and its relevance to human evolution
Abstract Abstract The traditional concept of long and gradual, glacial–interglacial climate changes during the Quaternary has been challenged since the 1980s. High temporal resolution analysis of
Phylogenomic approaches reveal how a climatic inversion and glacial refugia shape patterns of diversity in an African rain forest tree species
TLDR
It is shown for the first time that the North-South divide is the result of a single major colonisation event across the climatic inversion from an ancestral population located in Gabon, indicating that populations responded differently to past climate change.
Afromontane Forest Diversity and the Role of Grassland-Forest Transition in Tree Species Distribution
Local factors can play an important role in defining tree species distributions in species rich tropical forests. To what extent the same applies to relatively small, species poor West African
Combining Contemporary and Paleoecological Perspectives for Estimating Forest Resilience
In the face of dramatic climate change and human pressure acting on remaining forest areas across tropical, temperate and boreal biomes, there has emerged a coordinated effort to identify and protect
...
1
2
3
...

References

SHOWING 1-10 OF 51 REFERENCES
Towards an understanding of West African montane forest response to climate change
Aim Our aims were to provide a detailed chronology of past vegetation changes in the tropical mountains of west-central Africa since the Last Glacial Maximum and to discuss montane forest
Quaternary forest associations in lowland tropical West Africa
Terrestrial fossil pollen records are frequently used to reveal the response of vegetation to changes in both regional and global climate. Here we present a fossil pollen record from sediment cores
Pollen evidence of late Quaternary vegetation and inferred climate changes in Congo
A detailed palynological analysis of two cores recovered from a swamp in the Southern Bateke Plateaux (Congo), provides information on the botanical history of this region during the last 24,000 yr
Pollen-based biome reconstructions over the past 18,000 years and atmospheric CO 2 impacts on vegetation in equatorial mountains of Africa
This paper presents a quantitative vegetation reconstruction, based on a biomization procedure, of two mountain sites in the west (Bambili; 5°56′ N, 10°14′ E, 2273 m) and east (Rusaka; 3°26′ S,
Wet phases in the Sahara/Sahel region and human migration patterns in North Africa
TLDR
The data suggest that variability in the strength of Atlantic meridional overturning circulation (AMOC) is a main control on vegetation distribution in central North Africa and, at times, contributed to amenable conditions in the central Sahara/Sahel, allowing humans to cross this otherwise inhospitable region.
Dominant factors controlling glacial and interglacial variations in the treeline elevation in tropical Africa
TLDR
It is shown that lowering of the African treeline during the last glacial maximum was primarily triggered by regional drying, especially at upper elevations, and was amplified by decreases in atmospheric CO2 concentration and perhaps temperature, which contrasts with scenarios for the Holocene and future climates, in which the increase in treeline elevation will be dominated by temperature.
...
1
2
3
4
5
...