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Related Concept Videos

Light Acquisition02:16

Light Acquisition

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In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
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Related Experiment Video

Updated: Mar 22, 2026

Methods of Soil Resampling to Monitor Changes in the Chemical Concentrations of Forest Soils
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Methods of Soil Resampling to Monitor Changes in the Chemical Concentrations of Forest Soils

Published on: November 25, 2016

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Recent changes in mountain grasslands: a vegetation resampling study.

François Gillet1, Leslie Mauchamp2, Pierre-Marie Badot2

  • 1Université Bourgogne Franche-Comté - CNRSUMR 6249 Chrono-environnement 16 route de Gray 25030 Besançon Cedex France; Ecole Polytechnique Fédérale de Lausanne Laboratory of Ecological Systems Station 21015 Lausanne Switzerland.

Ecology and Evolution
|April 13, 2016
PubMed
Summary
This summary is machine-generated.

Land-use intensification in French Jura Mountains grasslands led to increased grass dominance and nutrient indicators but decreased phylogenetic and functional diversity. This highlights the need for stricter agricultural practices to conserve biodiversity.

Keywords:
Anthropogenic changesCSR strategiesJura Mountainscommunity diversitydiachronic surveyecological indicator valuesgrasslandresampling vegetation plotsvegetation dynamics

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Area of Science:

  • Ecology
  • Botany
  • Conservation Biology

Background:

  • Seminatural European grasslands are vital for biodiversity conservation, but land-use changes impact their plant diversity.
  • Previous studies on vegetation change in these systems yielded inconclusive results, necessitating diachronic assessments.
  • The French Jura Mountains, with a history of pastoralism, provide a valuable case study for examining recent vegetation trends.

Purpose of the Study:

  • To investigate recent changes in grassland vegetation composition and diversity in the French Jura Mountains using a diachronic approach.
  • To assess shifts in taxonomic, phylogenetic, and functional diversity, alongside ecological indicator values and life strategies.
  • To identify factors driving vegetation changes and their implications for biodiversity conservation.

Main Methods:

  • A resurvey study comparing floristic data from 150 grassland plots recorded between 1990-2000 with new surveys from 2012.
  • Analysis of taxonomic, phylogenetic, and functional diversity, and ecological indicator values (e.g., pastoral value, nutrient, defoliation tolerance).
  • Principal Component Analysis (PCA) and Wilcoxon paired tests to identify trends and significant changes in plant communities.

Main Results:

  • A significant trend towards increased grass dominance, higher tolerance to defoliation, greater pastoral value, and elevated nutrient indicator values was observed.
  • Phylogenetic and functional diversity showed a decrease, while local species richness slightly increased.
  • Changes were most pronounced in grasslands with previously low pastoral value, low grass cover, and high stress-tolerant species, linked to intensified management (mowing, grazing, fertilization).

Conclusions:

  • Intensified grassland management in the French Jura Mountains has led to significant vegetation changes, including a decline in phylogenetic and functional diversity.
  • While species richness may slightly increase, the overall biodiversity and resilience of these valuable ecosystems are threatened.
  • Stricter agricultural management guidelines are essential to prevent overexploitation and protect the biodiversity of mountain grasslands.