Christopher Madden results 31
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Coastal systems often depend on foundation species such as seagrasses that are supported by self-facilitation. Seagrass meadows, however, are threatened worldwide due to climate change and local human impact, disrupting self-facilitation leading to system instability. Florida Bay is a large seagrass dominated coastal ecosystem that suffered from multiple seagrass mortality events over the last half century driven by hypoxia, h...
Modeling total predation to avoid perverse outcomes from cat control in a data‐poor island ecosystemNARA Subscribed
Data‐hungry, complex ecosystem models are often used to predict the consequences of threatened species management, including perverse outcomes. Unfortunately, this approach is impractical in the many systems that have insufficient data to parameterize ecosystem interactions or reliably calibrate or validate such models. We devised a different approach composed of a minimum realistic model that guides decisions in data‐ and res...
Prolonging survival in good health is a fundamental societal goal. However, the leading determinants of disability-free survival in healthy older people have not been well established. Data from ASPREE, a bi-national placebo-controlled trial of aspirin with 4.7 years median follow-up, was analysed. At enrolment, participants were healthy and without prior cardiovascular events, dementia or persistent physical disability. Disab...
Most of Earth's terrestrial carbon is stored in the soil and can be released as carbon dioxide (CO 2 ) when disturbed. Although humans are known to exacerbate soil CO 2 emissions through land‐use change, we know little about the global carbon footprint of invasive species. We predict the soil area disturbed and resulting CO 2 emissions from wild pigs ( Sus scrofa ), a pervasive human‐spread vertebrate that uproots soil. We do...
Informing management decisions for ecological networks, using dynamic models calibrated to noisy time‐series dataNARA Subscribed
Well‐intentioned environmental management can backfire, causing unforeseen damage. To avoid this, managers and ecologists seek accurate predictions of the ecosystem‐wide impacts of interventions, given small and imprecise datasets, which is an incredibly difficult task. We generated and analysed thousands of ecosystem population time series to investigate whether fitted models can aid decision‐makers to select interventions. U...
The largest estuarine flow restoration project is the Comprehensive Everglades Restoration Plan (CERP). In 2012, one of its first phases, the C‐111 Project, was initiated and designed to increase freshwater flow into northern Florida Bay. Effects of changes in flow and associated nutrients on phytoplankton abundance and composition were studied in two sets of interconnected, quasi‐enclosed saline lakes at the southern end of t...