Thu Jun 26 00:00:00 UTC 2025: Here’s a summary and a news article based on the provided text:
**Summary:**
A recent study in Bengaluru, India, highlights the complex relationship between urban development, heat stress, and biodiversity. Researchers found that while tree cover is generally beneficial for bird diversity, focusing solely on afforestation with non-native species can be detrimental. Historically, cities like Bengaluru had diverse ecosystems including grasslands and wetlands, which are vital for specific species. The study emphasizes the need for holistic urban planning that considers historical land use, prioritizes native vegetation, and addresses ecological and social inequities related to heat exposure. Simply planting trees is not enough; diverse ecosystems and access to green spaces are crucial for both biodiversity and human well-being.
**News Article:**
**Bengaluru’s Bird Biodiversity Threatened by Unplanned Urban Greening, Study Finds**
**Bengaluru, June 26, 2025** – As India’s cities grapple with rising temperatures and shrinking green spaces, a new study sheds light on the unintended consequences of simplistic urban afforestation efforts. Researchers at the Indian Institute of Human Settlements (IIHS) in Bengaluru found that while green cover is important, a singular focus on planting non-native trees is failing to address the complex needs of the city’s diverse bird population.
Published in *Ecological Applications*, the study analyzed bird distribution patterns in Bengaluru in relation to urban heat islands and green cover. Researchers used public data from eBird and satellite imagery to correlate heat stress with loss of species. The results showed that while biodiversity thrives in cooler areas, heat islands exhibit lower diversity.
The research revealed that certain open-habitat bird species actually benefit from a decline in tree cover, a finding contrary to studies in other cities. This is because cities like Bengaluru historically encompassed diverse ecosystems beyond forests, including grasslands and wetlands. These habitats are increasingly threatened by urban sprawl and the prioritization of non-native tree species like Jacaranda and Tabebuia, which offer little benefit to local wildlife. 77% of Bengaluru’s tree cover is comprised of non-native species, which threatens local biodiversity and impacts human health.
“Simplistic mitigation moves such as tree plantations don’t always improve biodiversity,” said Jagdish Krishnaswamy, dean of the School of Environment and Sustainability at IIHS and senior author of the paper. “We need native grasses, herbs, shrubs and trees all to be part of ecological restoration and planting strategies in urban spaces.”
Experts are calling for a shift towards holistic urban planning that considers the historical land-use of cities, prioritizes native vegetation, and improves access to diverse green spaces for all residents. “Our first task should be to have biodiversity goals at the city levels, where separate land uses become important pieces to fulfil that goal,” added Monica Kaushik, an urban ecologist at Azim Premji University in Bengaluru.
The study also highlights the ecological and social inequities in urban environments, where marginalized communities often bear the brunt of heat stress and lack access to green spaces. Addressing these disparities is crucial for building resilient and equitable cities in the face of climate change.
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