Mechanisms behind elevational plant species richness patterns revealed by a trait-based approach

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41330%2F23%3A97574" target="_blank" >RIV/60460709:41330/23:97574 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1111/jvs.13171" target="_blank" >http://dx.doi.org/10.1111/jvs.13171</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/jvs.13171" target="_blank" >10.1111/jvs.13171</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Mechanisms behind elevational plant species richness patterns revealed by a trait-based approach

Popis výsledku v původním jazyce

Aims: Elevational patterns of plant species richness may be caused by multiple underlying mechanisms, and the same pattern can be predicted by different mechanisms. Using the steep elevational gradient of Tenerife as a model system, we aimed to test if the application of a trait-based approach can help disentangle the role of potential mechanisms behind local elevational plant species richness patterns.Location: Tenerife, Canary Islands, Spain.Methods: Based on vegetation releves from natural vegetation and disturbed roadside habitat, along an elevational gradient of 2300 m, we observed a peak of plant species richness in the lowest third of the gradient. We considered three mechanisms potentially shaping this pattern: environmental filtering (temperature and precipitation), effects of area and disturbance. For these mechanisms, we hypothesized a distinct pattern of functional trait-elevation relationships. These were tested with in-situ data of nine functional leaf traits, from which we calculated community-weighted means (CWM) of traits and functional diversity (Rao's Q).Results: While species richness was significantly positively correlated with temperature, area and disturbance, filtering through temperature was the only mechanism for which we could confirm most of our mechanism-specific hypotheses about elevational trait changes: with increasing elevation, CWMs of most traits indicated shifts from acquisitive to conservative growth strategies, and functional diversity decreased. The shift of growth strategies also supported the disturbance effect, as we found overall more acquisitive communities at roadsides compared to natural habitats.Conclusions: Our results indicate that simple correlations between species richness and abiotic variables are not necessarily causal. Additional testing of mechanism-specific hypotheses for elevational patterns of both CWMs and functional diversity can help distinguishing between correlational and mechanistic relationships between species richness and environmental variables. The trait-based framework presented here can be fruitfully applied to better understand species richness patterns in other regions and across other types of environmental gradients.

Název v anglickém jazyce

Mechanisms behind elevational plant species richness patterns revealed by a trait-based approach

Popis výsledku anglicky

Aims: Elevational patterns of plant species richness may be caused by multiple underlying mechanisms, and the same pattern can be predicted by different mechanisms. Using the steep elevational gradient of Tenerife as a model system, we aimed to test if the application of a trait-based approach can help disentangle the role of potential mechanisms behind local elevational plant species richness patterns.Location: Tenerife, Canary Islands, Spain.Methods: Based on vegetation releves from natural vegetation and disturbed roadside habitat, along an elevational gradient of 2300 m, we observed a peak of plant species richness in the lowest third of the gradient. We considered three mechanisms potentially shaping this pattern: environmental filtering (temperature and precipitation), effects of area and disturbance. For these mechanisms, we hypothesized a distinct pattern of functional trait-elevation relationships. These were tested with in-situ data of nine functional leaf traits, from which we calculated community-weighted means (CWM) of traits and functional diversity (Rao's Q).Results: While species richness was significantly positively correlated with temperature, area and disturbance, filtering through temperature was the only mechanism for which we could confirm most of our mechanism-specific hypotheses about elevational trait changes: with increasing elevation, CWMs of most traits indicated shifts from acquisitive to conservative growth strategies, and functional diversity decreased. The shift of growth strategies also supported the disturbance effect, as we found overall more acquisitive communities at roadsides compared to natural habitats.Conclusions: Our results indicate that simple correlations between species richness and abiotic variables are not necessarily causal. Additional testing of mechanism-specific hypotheses for elevational patterns of both CWMs and functional diversity can help distinguishing between correlational and mechanistic relationships between species richness and environmental variables. The trait-based framework presented here can be fruitfully applied to better understand species richness patterns in other regions and across other types of environmental gradients.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10611 - Plant sciences, botany

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Journal of Vegetation Science

ISSN

1100-9233

e-ISSN

1100-9233

Svazek periodika

34

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

SE - Švédské království

Počet stran výsledku

15

Strana od-do

1-15

Kód UT WoS článku

000918021500001

EID výsledku v databázi Scopus

2-s2.0-85149823533