Drought and disease trigger novel interactions among top predators

Original title: Drought and disease trigger novel interactions among top predators.

Interactions among species are increasingly recognized as key determinants of climate change impacts on ecosystems1-5.

By Sergio, Natsukawa, Tanferna +5NatureOct 21, 2026

Score████░░░░░░4.3

VerdictWorth a reader's time today.

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Abstract

Interactions among species are increasingly recognized as key determinants of climate change impacts on ecosystems1-5. However, we know little about how climatic perturbations affect interactions among top vertebrate predators. Here we show that, when an emergent disease caused the decline of shared prey (rabbits), after decades of neutral co-existence a mammalian carnivore (lynx) started to prey heavily on a top predatory raptor (kites). These predation bouts occurred exclusively under drought conditions and when lynx found rabbit remains under the raptor nests, consistent with the removal of a potential competitor. Drought-induced lynx predation depressed lifetime reproductive success and triggered territory abandonment and dispersal by the raptor, suggestive of a new arms race among predators. A reduction in raptor abundance was associated with an increase in an insectivorous bird (a small owl), showing that the new interaction had the potential to reach lower trophic levels. These results underline the importance of diet flexibility and mobility as important mediators of resilience to stressors. In the future, synergistic effects of multiple anthropogenic stressors may reshape the interactions and ecological roles of many apex predators, with potential cascading consequences for whole ecosystems. A key to forecasting the future impact of global change may reside in understanding how behavioural flexibility and interacting keystone species respond to interacting shocks.

Fabrizio Sergio, Haruki Natsukawa, Alessandro Tanferna, Javier Chicano, Francisco Carro, Ramón C Soriguer, Fernando Hiraldo, Julio Blas

The editor's rubric

Heuristic review

Leverage3 / 5: A method or resource many groups across the field will adopt within a year.; 16% of this desk’s rubric
Magnitude3 / 5: Large gain: roughly 2x, or a clear new state of the art on a hard, unsaturated problem.; 20% of this desk’s rubric
Evidence3 / 5: Solid: multiple benchmarks or cohorts, ablations, fair baselines, released code or data.; 20% of this desk’s rubric
Novelty3 / 5: A genuinely new approach to an open problem.; 10% of this desk’s rubric
Trajectory2 / 5: Some room to improve with obvious engineering.; 14% of this desk’s rubric
Stakes3 / 5: Meaningful benefit to many people within a few years.; 20% of this desk’s rubric

Dimension	Level	Weight	What that level means
Leverage	███░░ 3	16%	A method or resource many groups across the field will adopt within a year.
Magnitude	███░░ 3	20%	Large gain: roughly 2x, or a clear new state of the art on a hard, unsaturated problem.
Evidence	███░░ 3	20%	Solid: multiple benchmarks or cohorts, ablations, fair baselines, released code or data.
Novelty	███░░ 3	10%	A genuinely new approach to an open problem.
Trajectory	██░░░ 2	14%	Some room to improve with obvious engineering.
Stakes	███░░ 3	20%	Meaningful benefit to many people within a few years.

Editor’s rationale

Heuristic triage from title and abstract text only, not a reading of the paper. Cues found: method (we report); novelty (open problem); scale (improves with scale); stakes (global scale, climate).

How the score was computed

rank-2026-10-18

Score████░░░░░░4.3

Score = 10 × (75% × adjusted merit / 10 + 15% × attention + 10% × freshness)

Desks place stronger verdicts first, then use this score to order work within the same verdict.

Merit: 5.7 / 10; Weighted rubric, evidence-gated.
Adjusted merit: 4.7 / 10; Shrunk toward the desk prior by editor confidence (40%).
Attention: 0%; Citations, upvotes, points, mentions.
Freshness: 80%; Half-life decay since publication.

Citations0 (reference 15, via openalex, Oct 24, 2026, 06:17 UTC)

The record

Reviewed by heuristic-v7 on Oct 24, 2026, 06:45 UTC. Paper type: method.
Categories: Journal Article
TOP, No.4 in the Climate & Energy edition of October 24, 2026.