Contrasting patterns of soil chemistry and vegetation cover determine diversity changes of soil phototrophs along an Afrotropical elevation gradient.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F22%3A00569042" target="_blank" >RIV/60077344:_____/22:00569042 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985939:_____/22:00560546 RIV/60076658:12310/22:43905628 RIV/61989592:15310/22:73610893

Výsledek na webu

<a href="https://doi.org/10.1007/s10021-021-00698-6" target="_blank" >https://doi.org/10.1007/s10021-021-00698-6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10021-021-00698-6" target="_blank" >10.1007/s10021-021-00698-6</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Contrasting patterns of soil chemistry and vegetation cover determine diversity changes of soil phototrophs along an Afrotropical elevation gradient.

Popis výsledku v původním jazyce

Soil phototrophic microbes play key roles in many ecosystem functions, including nutrient cycling, water absorption and retention, substrate weathering and soil stabilization, as well as colonization and persistence of other organisms. Knowledge about the diversity and biomass of soil phototrophs remains limited, especially in tropical forests and savannas. Here, we investigate changes in the diversity and abundance of soil phototrophs across the 4-km elevation gradient on Mt. Cameroon, Africa, from tropical forests (0-2300 m) to treeless savanna (2300-3600 m) and afroalpine vegetation (3600-4000 m). We evaluated the role of soil chemistry and vegetation cover in shaping phototrophic diversity patterns using soil, tree and herb census data from 224 permanent plots. Cyanobacteria from Chroococcales accounted for 65% of the species richness and > 70% of the biovolume. The highest phototrophic diversity and biovolume were recorded in treeless savanna and afroalpine vegetation, and lowest values in mid-elevation tropical forests with dense understory vegetation and hence limited light availability. Higher diversity and biovolume of soil phototrophs were associated with less productive, well-illuminated soils with lower organic matter and nitrogen content and higher pH, phosphorus and cation content. Changes in microbial richness and biovolume across tropical forests showed a U-shaped elevation pattern, with higher values recorded in coastal and lowland forests up to 1000 m elevation, the lowest values in the mid-elevation open-canopy forests with dense understory vegetation caused by disturbances of forest elephants and higher values again in montane forests between 1800 and 2200 m. Above the tree line, soil phototrophic biovolume also showed a U-shaped elevation pattern, with lower richness recorded in compact grasslands between 2700 and 3400 m. At lower-elevation savanna, soil phototrophs are indirectly supported by regular fires during the dry season, which reduces plant cover and increases soil phosphorus and cations, while barren lava fields at higher elevations around the summit support soil phototrophs directly via increased soil P and K content and indirectly by inhibiting plant growth and vegetation cover. Our results shed light on an overlooked part of soil biodiversity in major tropical ecosystems and uncover the role of various ecological filters in structuring phototrophic microbial communities in tropical soils.

Název v anglickém jazyce

Contrasting patterns of soil chemistry and vegetation cover determine diversity changes of soil phototrophs along an Afrotropical elevation gradient.

Popis výsledku anglicky

Soil phototrophic microbes play key roles in many ecosystem functions, including nutrient cycling, water absorption and retention, substrate weathering and soil stabilization, as well as colonization and persistence of other organisms. Knowledge about the diversity and biomass of soil phototrophs remains limited, especially in tropical forests and savannas. Here, we investigate changes in the diversity and abundance of soil phototrophs across the 4-km elevation gradient on Mt. Cameroon, Africa, from tropical forests (0-2300 m) to treeless savanna (2300-3600 m) and afroalpine vegetation (3600-4000 m). We evaluated the role of soil chemistry and vegetation cover in shaping phototrophic diversity patterns using soil, tree and herb census data from 224 permanent plots. Cyanobacteria from Chroococcales accounted for 65% of the species richness and > 70% of the biovolume. The highest phototrophic diversity and biovolume were recorded in treeless savanna and afroalpine vegetation, and lowest values in mid-elevation tropical forests with dense understory vegetation and hence limited light availability. Higher diversity and biovolume of soil phototrophs were associated with less productive, well-illuminated soils with lower organic matter and nitrogen content and higher pH, phosphorus and cation content. Changes in microbial richness and biovolume across tropical forests showed a U-shaped elevation pattern, with higher values recorded in coastal and lowland forests up to 1000 m elevation, the lowest values in the mid-elevation open-canopy forests with dense understory vegetation caused by disturbances of forest elephants and higher values again in montane forests between 1800 and 2200 m. Above the tree line, soil phototrophic biovolume also showed a U-shaped elevation pattern, with lower richness recorded in compact grasslands between 2700 and 3400 m. At lower-elevation savanna, soil phototrophs are indirectly supported by regular fires during the dry season, which reduces plant cover and increases soil phosphorus and cations, while barren lava fields at higher elevations around the summit support soil phototrophs directly via increased soil P and K content and indirectly by inhibiting plant growth and vegetation cover. Our results shed light on an overlooked part of soil biodiversity in major tropical ecosystems and uncover the role of various ecological filters in structuring phototrophic microbial communities in tropical soils.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10618 - Ecology

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Ecosystems

ISSN

1432-9840

e-ISSN

1435-0629

Svazek periodika

25

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

17

Strana od-do

1020-1036

Kód UT WoS článku

000708368000001

EID výsledku v databázi Scopus

2-s2.0-85117171181