Dataset Information

Postglacial change of the floristic diversity gradient in Europe.

ABSTRACT: Climate warming is expected to cause a poleward spread of species, resulting in increased richness at mid to high latitudes and weakening the latitudinal diversity gradient. We used pollen data to test if such a change in the latitudinal diversity gradient occurred during the last major poleward shift of plant species in Europe following the end of the last glacial period. In contrast to expectations, the slope of the gradient strengthened during the Holocene. The increase in temperatures around 10?ka ago reduced diversity at mid to high latitude sites due to the gradual closure of forests. Deforestation and the introduction of agriculture during the last 5?ky had a greater impact on richness in central Europe than the earlier climate warming. These results do not support the current view that global warming alone will lead to a loss in biodiversity, and demonstrate that non-climatic human impacts on the latitudinal diversity gradient is of a greater magnitude than climate change.

SUBMITTER: Giesecke T

PROVIDER: S-EPMC6882886 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature

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Postglacial change of the floristic diversity gradient in Europe.

Giesecke Thomas T Wolters Steffen S van Leeuwen Jacqueline F N JFN van der Knaap Pim W O PWO Leydet Michelle M Brewer Simon S

Nature communications 20191128 1

Climate warming is expected to cause a poleward spread of species, resulting in increased richness at mid to high latitudes and weakening the latitudinal diversity gradient. We used pollen data to test if such a change in the latitudinal diversity gradient occurred during the last major poleward shift of plant species in Europe following the end of the last glacial period. In contrast to expectations, the slope of the gradient strengthened during the Holocene. The increase in temperatures around ...[more]

PMID: 31780647

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Project description:Agroforestry has been recognized as an effective circa citum conservation strategy in Ethiopia. Despite progress in the recent past, there has been very little research characterizing the management strategies of farmers for agroforestry practices (AFP) and quantifying their contribution to biodiversity conservation. We (i) characterized the management strategies of farmers for agroforestry practices and (ii) assessed the floristic composition, diversity, and structure of woody species in agroforestry practices in Northwestern Ethiopia. We interviewed farm owners to gather information on the management strategies of agroforestry practices. We also collected biophysical data using quadrats established in 126 fields selected from homegardens (HG), coffee-based (CS), and Rhamnus prinoides (Locally Gesho)-based practices. A total of 83 trees and shrubs (76 % native and 24 % non-native) from 40 families and 47 genera recorded in the study area. The results indicate that AFPs represent diverse vertical and horizontal management strategies, and plant functions, which vary among AFPs and wealth status. The results suggest the potential of agroforestry practices for supporting livelihoods and biodiversity conservation. Farmers' management practices and strategies affect the species diversity of AFPs. The mean height (m), basal area (m2 ha-1), and diameter at breast height (cm) varied among AFPs. The average stem density ha-1 as well as species richness per farm significantly varied among AFPs and wealth status. Richness, Shannon, and Simpson's diversity varied among HGs in the study sites. In the Lay Armachiho district, species richness, Shannon, and Simpson's diversity significantly varied (P < 0.05) among agroforestry practices. Our study suggests management strategies and household wealth status that affect the diversity of woody plants in AFPs should be consider to improve biodiversity conservation in agricultural landscapes. Since AFPs play a vital role in biodiversity conservation that is part of a bigger conservation strategy, the suggestion of AFPs to apply in Ethiopia is proposed. To advance the overall contribution, further studies on the optimization of technical, socio-economic and environmental (including density and diversity) performance of agroforestry practices is needed.

Dataset Information

Postglacial change of the floristic diversity gradient in Europe.

Publications

Postglacial change of the floristic diversity gradient in Europe.

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