Heitor C Sousa
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bioheitorsousa.bsky.social
Heitor C Sousa
@bioheitorsousa.bsky.social
PhD in Environmental Sciences, Ecologist, and Herpetologist

https://heitorcsousa.github.io
7/7 📲 Let’s act before tipping points lock species into vulnerable states. P.S. Late post, but urgent message! 🌍 #OpenScience #Cerrado
May 15, 2025 at 12:39 PM
6/7 🙌 Collaboration matters! Huge thanks to @biology.ox.ac.uk @unb-oficial.bsky.social @salgoteam.bsky.social @robsalgo.bsky.social teams and funders. We’ve shared all data to support global fire resilience efforts. 📄 Full code + datasets:
doi.org/10.5281/zeno...
HeitorCSousa/DemographicResilience_CerradoLizards: Demographic Resilience Cerrado Lizards - v1.0.0
This repository provides all the data and code (to run in R) from the analysis of the study "Severe fire regimes decrease resilience of ectothermic populations", published in the Journal of Animal Eco...
doi.org
May 15, 2025 at 12:39 PM
5/7 🚨 Conservation call: We urge fire management that prioritizes HETEROGENEITY—avoiding severe, homogenizing regimes. Protect habitats that boost reproduction for vulnerable species (e.g., viviparous lizards). Policy makers, take note! #ScienceForAction
May 15, 2025 at 12:39 PM
4/7 ⚖️ Trade-offs revealed:
✅ High-severity fires → ↑ Resistance
❌ But ↓ Compensation & slower recovery.
We found severe fires homogenize habitats, disproportionately affecting species with limited reproductive flexibility.
We show generation time and reproductive output predict resilience. #Ecology
May 15, 2025 at 12:39 PM
3/7 🦎 Meet our study species:
• _Copeoglossum nigropunctatum_ (viviparous, slow-paced)
• _Micrablepharus atticolus_ (tiny, fixed clutch size)
• _Tropidurus itambere_ (multiple clutches)
#BrazilBiodiversity
May 15, 2025 at 12:39 PM
2/7 📊 For 14 years, we tracked 3 lizard species in Brazil’s Cerrado savanna under varying fire regimes. Using mark-recapture data + Bayesian models, we linked vital rates (survival, growth, reproduction) to fire severity. Spoiler: Life history drives resilience. #WildlifeScience
May 15, 2025 at 12:39 PM
**10/ Engage Further**
– Follow #FireEcology #ConservationScience #Brazil
– Support @UFT @UnB initiatives in sustainable fire management.
– Share this thread to spark global conversations! 🌱
May 15, 2025 at 11:54 AM
**9/ Access the Study**
*“Prioritizing fire management goals in a biodiversity hotspot”*
🔗 [DOI: 10.1016/j.pecon.2025.03.005](doi.org/10.1016/j.pe...)
Redirecting
doi.org
May 15, 2025 at 11:54 AM
**8/ Quotes from the authors**
@bioheitorsousa.bsky.social: *“Fire isn’t the enemy—it’s a tool. But we need dialogue to use it wisely.”*
Guarino Colli: *“Brazil’s Cerrado can model how to unite conservation and development.”*
May 15, 2025 at 11:54 AM
**7/ Global Relevance**
Lessons for fire-prone savannas worldwide:
– **Collaborative governance** (locals + scientists) reduces wildfire risks.
– **Traditional knowledge** is key to sustainable fire use.
– **Climate resilience** depends on balancing ecology and livelihoods.
May 15, 2025 at 11:54 AM
**6/ Policy Implications**
Brazil’s new **National IFM Plan (Law 14.944/2024)** is a step forward, but success requires:
✅ Training programs for rural communities.
✅ Faster licensing for prescribed burns.
✅ Science-based monitoring of fire regimes.
May 15, 2025 at 11:54 AM
**5/ Why the gap?**
– **Education matters**: Higher education correlates with prioritizing biodiversity.
– **Age plays a role**: Older residents undervalue fire’s ecological role.
– **Policy barriers**: Lack of training and stigma around fire use persist.
May 15, 2025 at 11:54 AM
**4/ Key Findings**

– **Perception Gap**: Only ~35% of rural residents see fire as a tool (vs. 72% of specialists).
May 15, 2025 at 11:54 AM
**3/ Key Findings**

– **IFM Support**: 91.8% of specialists endorse Integrated Fire Management (IFM) in protected areas; 79.5% support it on private lands.
May 15, 2025 at 11:54 AM
**2/ Key Findings**
– **Shared Priorities**: Both rural residents and specialists ranked **water protection** and **biodiversity conservation** as top fire management goals.
May 15, 2025 at 11:54 AM
**1/ Why focus on the Cerrado?**
– Home to **5% of Earth’s biodiversity**.
– Stores **13.7 billion tons of carbon**.
– A water tower for South America, feeding 8 major river basins.
Yet, unsustainable fires threaten these ecosystems. 🔥
May 15, 2025 at 11:54 AM