> ## Content Index
> Fetch the complete content index at: https://intelligence.wildlandseco.com/llms.txt
> Use this file to discover other available public pages before exploring further.

# More shrubs increased some landscape diversity but reduced grassland richness
- URL: https://intelligence.wildlandseco.com/2026-10-17-iberian-shrub-encroachment-diversity-tradeoffs/
- Published: 2026-10-17T14:05:42.000Z
- Updated: 2026-10-17T14:05:42.000Z
- Description: Northern Iberian plots show a hump-shaped biodiversity response to woody encroachment.
- Author: Benjamin Worlund
- Tags: grassland, woody encroachment, biodiversity, Land, Wildlife, Climate, #ecological-intelligence, #brief-2026-10-17, #global-radar, #peer-reviewed, #geo-europe

Evidence

Peer-reviewed

Geography

Four northern Iberian study landscapes, Spain and Portugal

System

Grassland succession; shrub encroachment; biodiversity

## WHAT THE EVIDENCE SAYS

Across four northern Iberian landscapes, researchers compared vegetation and biodiversity measures along woody encroachment gradients. Some functional and phylogenetic diversity rose as shrubs entered, while taxonomic diversity peaked around lower to intermediate shrub levels before dropping under denser woody cover.

## WHY IT MATTERS / OUR READ

Preventing every shrub or allowing complete woody takeover are both crude prescriptions. Management for open-habitat specialists needs explicit targets and mosaics, not a blanket equation between more biomass and more biodiversity.

## CAVEATS / UNCERTAINTY

Observational gradient comparisons do not show the effect of a prescribed intervention, and responses differ by assemblage, site history and the diversity metric chosen.

## SOURCE

Landscape Ecology · Iberian woody-encroachment biodiversity study  
[View original evidence ↗](https://doi.org/10.1007/s10980-026-02308-z?ref=intelligence.wildlandseco.com)

From the Morning Brief · 2026-10-17

[Read the full Morning Brief →](https://intelligence.wildlandseco.com/morning-brief-2026-10-17/)