Relationships between plant species richness and soil pH at the level of biome and ecoregion in Brazil

Natalia Crespo Mendes*, Alexis Laurent, Hans Henrik Bruun, Michael Zwicky Hauschild

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

Soil pH has been used to indicate how changes in soil acidity can influence species loss. The correlation between soil pH and plant species richness has mainly been studied in North America and Europe, while there is a lack of studies exploring Tropical floras. Here, our aim was therefore to investigate the relationships between terrestrial plant species richness and soil pH for the large Brazilian flora, with spatial differentiation into biomes and ecoregions. Data of plant species occurrences and soil pH in Brazil were compiled from public databases into a geo-referenced inventory of 29,712 terrestrial plants species with a harmonized nomenclature. Based on the pH range, over which each species had been observed, the species richness for each unit of soil pH was determined and plotted as a function of pH for the 6 biomes and 47 ecoregions of Brazil. Lognormal distributions were found for entire Brazil (R2 = 0.999), the six biomes (R2 > 0.955) and for 40 out of 45 ecoregions, for which a sufficient number of observations was available (R2 of 0.830–1.000). Similar distribution patterns were observed when limiting the study scope to range-restricted species, i.e. species only occurring in a single ecoregion in Brazil. Species richness is an indicator of plant biodiversity and we recommend a combined use of species richness for all species and for range-restricted species to address the overall status of the terrestrial plant ecosystem as well as the potential loss of unique species within it, including endemic species. We additionally propose that the developed inventory and the observed sensitivity distributions serve as basis for life cycle impact assessment of terrestrial acidification.
Original languageEnglish
JournalEcological Indicators
Volume98
Pages (from-to)266-275
ISSN1470-160X
DOIs
Publication statusPublished - 2019

Keywords

  • Biodiversity conservation
  • Biome
  • Brazilian flora
  • Ecoregion
  • Range-restricted species
  • Soil acidity

Cite this

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title = "Relationships between plant species richness and soil pH at the level of biome and ecoregion in Brazil",
abstract = "Soil pH has been used to indicate how changes in soil acidity can influence species loss. The correlation between soil pH and plant species richness has mainly been studied in North America and Europe, while there is a lack of studies exploring Tropical floras. Here, our aim was therefore to investigate the relationships between terrestrial plant species richness and soil pH for the large Brazilian flora, with spatial differentiation into biomes and ecoregions. Data of plant species occurrences and soil pH in Brazil were compiled from public databases into a geo-referenced inventory of 29,712 terrestrial plants species with a harmonized nomenclature. Based on the pH range, over which each species had been observed, the species richness for each unit of soil pH was determined and plotted as a function of pH for the 6 biomes and 47 ecoregions of Brazil. Lognormal distributions were found for entire Brazil (R2 = 0.999), the six biomes (R2 > 0.955) and for 40 out of 45 ecoregions, for which a sufficient number of observations was available (R2 of 0.830–1.000). Similar distribution patterns were observed when limiting the study scope to range-restricted species, i.e. species only occurring in a single ecoregion in Brazil. Species richness is an indicator of plant biodiversity and we recommend a combined use of species richness for all species and for range-restricted species to address the overall status of the terrestrial plant ecosystem as well as the potential loss of unique species within it, including endemic species. We additionally propose that the developed inventory and the observed sensitivity distributions serve as basis for life cycle impact assessment of terrestrial acidification.",
keywords = "Biodiversity conservation, Biome, Brazilian flora, Ecoregion, Range-restricted species, Soil acidity",
author = "{Crespo Mendes}, Natalia and Alexis Laurent and Bruun, {Hans Henrik} and Hauschild, {Michael Zwicky}",
year = "2019",
doi = "10.1016/j.ecolind.2018.11.004",
language = "English",
volume = "98",
pages = "266--275",
journal = "Ecological Indicators",
issn = "1470-160X",
publisher = "Elsevier",

}

Relationships between plant species richness and soil pH at the level of biome and ecoregion in Brazil. / Crespo Mendes, Natalia; Laurent, Alexis; Bruun, Hans Henrik; Hauschild, Michael Zwicky.

In: Ecological Indicators, Vol. 98, 2019, p. 266-275.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Relationships between plant species richness and soil pH at the level of biome and ecoregion in Brazil

AU - Crespo Mendes, Natalia

AU - Laurent, Alexis

AU - Bruun, Hans Henrik

AU - Hauschild, Michael Zwicky

PY - 2019

Y1 - 2019

N2 - Soil pH has been used to indicate how changes in soil acidity can influence species loss. The correlation between soil pH and plant species richness has mainly been studied in North America and Europe, while there is a lack of studies exploring Tropical floras. Here, our aim was therefore to investigate the relationships between terrestrial plant species richness and soil pH for the large Brazilian flora, with spatial differentiation into biomes and ecoregions. Data of plant species occurrences and soil pH in Brazil were compiled from public databases into a geo-referenced inventory of 29,712 terrestrial plants species with a harmonized nomenclature. Based on the pH range, over which each species had been observed, the species richness for each unit of soil pH was determined and plotted as a function of pH for the 6 biomes and 47 ecoregions of Brazil. Lognormal distributions were found for entire Brazil (R2 = 0.999), the six biomes (R2 > 0.955) and for 40 out of 45 ecoregions, for which a sufficient number of observations was available (R2 of 0.830–1.000). Similar distribution patterns were observed when limiting the study scope to range-restricted species, i.e. species only occurring in a single ecoregion in Brazil. Species richness is an indicator of plant biodiversity and we recommend a combined use of species richness for all species and for range-restricted species to address the overall status of the terrestrial plant ecosystem as well as the potential loss of unique species within it, including endemic species. We additionally propose that the developed inventory and the observed sensitivity distributions serve as basis for life cycle impact assessment of terrestrial acidification.

AB - Soil pH has been used to indicate how changes in soil acidity can influence species loss. The correlation between soil pH and plant species richness has mainly been studied in North America and Europe, while there is a lack of studies exploring Tropical floras. Here, our aim was therefore to investigate the relationships between terrestrial plant species richness and soil pH for the large Brazilian flora, with spatial differentiation into biomes and ecoregions. Data of plant species occurrences and soil pH in Brazil were compiled from public databases into a geo-referenced inventory of 29,712 terrestrial plants species with a harmonized nomenclature. Based on the pH range, over which each species had been observed, the species richness for each unit of soil pH was determined and plotted as a function of pH for the 6 biomes and 47 ecoregions of Brazil. Lognormal distributions were found for entire Brazil (R2 = 0.999), the six biomes (R2 > 0.955) and for 40 out of 45 ecoregions, for which a sufficient number of observations was available (R2 of 0.830–1.000). Similar distribution patterns were observed when limiting the study scope to range-restricted species, i.e. species only occurring in a single ecoregion in Brazil. Species richness is an indicator of plant biodiversity and we recommend a combined use of species richness for all species and for range-restricted species to address the overall status of the terrestrial plant ecosystem as well as the potential loss of unique species within it, including endemic species. We additionally propose that the developed inventory and the observed sensitivity distributions serve as basis for life cycle impact assessment of terrestrial acidification.

KW - Biodiversity conservation

KW - Biome

KW - Brazilian flora

KW - Ecoregion

KW - Range-restricted species

KW - Soil acidity

U2 - 10.1016/j.ecolind.2018.11.004

DO - 10.1016/j.ecolind.2018.11.004

M3 - Journal article

VL - 98

SP - 266

EP - 275

JO - Ecological Indicators

JF - Ecological Indicators

SN - 1470-160X

ER -