Global diversity patterns are modulated by temporal fluctuations in primary productivity

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11620%2F19%3A10402726" target="_blank" >RIV/00216208:11620/19:10402726 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/19:10402726

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=H9OZD5ePgv" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=H9OZD5ePgv</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/geb.12997" target="_blank" >10.1111/geb.12997</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Global diversity patterns are modulated by temporal fluctuations in primary productivity

Popis výsledku v původním jazyce

Aim To evaluate the role of seasonal and non-seasonal productivity fluctuations in global patterns of species richness. Location Worldwide. Time period 2000-2017. Major taxa studied Amphibians, birds, mammals. Methods We analysed time series of monthly variation of the Normalized Difference Vegetation Index (NDVI), a surrogate of primary productivity, within c. 100 km x 100 km cells across all continents, estimating the mean, periodic seasonal variation and aperiodic unpredictable fluctuations of the NDVI in these cells. We then explored the relationships between mean NDVI and the components of its temporal variation and evaluated the independent effects of the above-mentioned variables on species richness in the three vertebrate groups by means of variation partitioning. Results There is a hump-shaped relationship between mean productivity and variation in productivity, so that temporal variation in productivity is lowest in regions with minimum and maximum values of mean productivity. Although mean productivity is a strong determinant of species richness, both seasonal and non-seasonal productivity variation significantly affect the species richness of all studied taxa when accounting for mean productivity. However, the direction of these effects differs between regions differing in the mean productivity level. High variation in productivity has a negative effect on species richness in regions with moderate to high productivity levels, whereas species richness is higher in arid regions with high variation in productivity. Main conclusions Species richness is affected by temporal variation in productivity, but these effects differ regionally. In productive areas, high environmental stochasticity may increase population extinction rates, whereas arid regions probably benefit from resource fluctuations that promote species coexistence. Our results indicate that contemporary changes in patterns of temporal resource fluctuations may affect future global patterns of biological diversity on Earth.

Název v anglickém jazyce

Global diversity patterns are modulated by temporal fluctuations in primary productivity

Popis výsledku anglicky

Aim To evaluate the role of seasonal and non-seasonal productivity fluctuations in global patterns of species richness. Location Worldwide. Time period 2000-2017. Major taxa studied Amphibians, birds, mammals. Methods We analysed time series of monthly variation of the Normalized Difference Vegetation Index (NDVI), a surrogate of primary productivity, within c. 100 km x 100 km cells across all continents, estimating the mean, periodic seasonal variation and aperiodic unpredictable fluctuations of the NDVI in these cells. We then explored the relationships between mean NDVI and the components of its temporal variation and evaluated the independent effects of the above-mentioned variables on species richness in the three vertebrate groups by means of variation partitioning. Results There is a hump-shaped relationship between mean productivity and variation in productivity, so that temporal variation in productivity is lowest in regions with minimum and maximum values of mean productivity. Although mean productivity is a strong determinant of species richness, both seasonal and non-seasonal productivity variation significantly affect the species richness of all studied taxa when accounting for mean productivity. However, the direction of these effects differs between regions differing in the mean productivity level. High variation in productivity has a negative effect on species richness in regions with moderate to high productivity levels, whereas species richness is higher in arid regions with high variation in productivity. Main conclusions Species richness is affected by temporal variation in productivity, but these effects differ regionally. In productive areas, high environmental stochasticity may increase population extinction rates, whereas arid regions probably benefit from resource fluctuations that promote species coexistence. Our results indicate that contemporary changes in patterns of temporal resource fluctuations may affect future global patterns of biological diversity on Earth.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10618 - Ecology

Projekt

<a href="/cs/project/GA16-26369S" target="_blank" >GA16-26369S: Je biologická diverzita omezená? Cesta k rovnovážné teorii biodiverzity</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Global Ecology and Biogeography

ISSN

1466-822X

e-ISSN

—

Svazek periodika

28

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

1827-1838

Kód UT WoS článku

000496538900009

EID výsledku v databázi Scopus

2-s2.0-85071190269