Climate-Driven Vegetation Characteristics Shape Phytophagous and Carnivorous Insect Diversity in South African Savannahs

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F25%3A00604348" target="_blank" >RIV/60077344:_____/25:00604348 - isvavai.cz</a>

Alternative codes found

RIV/67985939:_____/25:00604348 RIV/00216208:11310/25:10511722 RIV/00216208:11620/25:10511722

Result on the web

<a href="https://onlinelibrary.wiley.com/doi/epdf/10.1111/jbi.15076" target="_blank" >https://onlinelibrary.wiley.com/doi/epdf/10.1111/jbi.15076</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/jbi.15076" target="_blank" >10.1111/jbi.15076</a>

Result language

angličtina

Original language name

Climate-Driven Vegetation Characteristics Shape Phytophagous and Carnivorous Insect Diversity in South African Savannahs

Original language description

Aim: Despite the evidenced importance of insects in savannah ecosystems, the drivers of their diversity patterns remain poorly understood, particularly in the Afrotropical region. This study addresses part of this gap by investigating the effects of climate, habitat, disturbance and vegetation variables on species richness and community composition of phytophagous and predatory insects in South African savannahs. Location: Kruger National Park (KNP), South Africa.Taxon: Phytophagous insects (moths) and carnivorous insects (mantises).Methods: Moths and mantises were light-trapped in 60 plots distributed across KNP during two seasons. Direct and indirect effects of environmental variables on insect species richness were analysed using structural equation models, and on community composition through distance-based redundancy analyses (db-RDA).Results: Based on an extensive dataset of 65,593 moth individuals representing 817 species and 3511 mantis individuals representing 38 species, we identified plant communities as the primary driver of species richness and community structure for both insect groups. The effects of vegetation on insect communities were indirectly shaped by climate, particularly mean temperature (negatively correlated with precipitation), through its effects on plant species richness. Additionally, a complex interplay among bedrock type, water availability and disturbance from large herbivores further shaped insect diversity.Main Conclusions: Our findings highlight the critical role of plant species richness in determining insect diversity patterns in savannah ecosystems. We also confirmed the region's vulnerability to climate change, as decreasing precipitation and increasing temperatures alter vegetation composition and biomass, consequently affecting insect communities. Effective conservation strategies should focus on managing large herbivores to maintain diverse vegetation, which is crucial for supporting insect diversity. Priority should be given to balancing water availability and disturbance intensity, particularly in preserving the health of rivers and their surroundings, to mitigate the adverse effects of climate change on these ecosystems.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10619 - Biodiversity conservation

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Name of the periodical

Journal of Biogeography

ISSN

0305-0270

e-ISSN

1365-2699

Volume of the periodical

52

Issue of the periodical within the volume

4

Country of publishing house

US - UNITED STATES

Number of pages

12

Pages from-to

e15076

UT code for WoS article

001388352000001

EID of the result in the Scopus database

2-s2.0-86000436834