Postdoctoral Associate · Cary Institute for Ecosystem Studies

Studying forests to understand farms.

I'm an ecologist and biogeochemist. I look for natural experiments in forests, on farms, and anywhere else natural or built contrasts provide opportunity. I use metagenomics, stable isotopes, environmental analyzers, and a host of other tools to pursue the mechanisms beneath the phenomena we observe.

Dan Petticord in the field
Canopy access — Panama
27
Peer-reviewed publications
$712K
Competitive funding secured
PI
USDA New Investigator Grant
01 — Two Directions

I use basic science to design applied systems, and applied systems to understand basic science.

Forests to understand farms

Forests maintain high productivity through tight nutrient recycling and complex interactions above and belowground. Understanding how forests feed themselves can inform how we design sustainable, productive landscapes.

Farms to understand forests

Farms and pastures are among the most interesting 'natural laboratories' scientists can study. Decades of fertilization, grazing, and amendment have left gradients we can use to understand coexistence, nutrient dynamics, and assembly theory at scale.

USDA New Investigator Grant · 2026 · Lead Investigator

A compost pile is a coexistence experiment

Manure is a good way to recycle nutrients and build soil health, but it can carry antibiotic resistance genes into soils and onto crops. Composting should be one solution to our problem: the high temperatures of compost should kill pathogens and degrade DNA that may carry antibiotic resistance genes. In practice the results are mixed, and my USDA project is about why. Either the resistance genes stick around because they give their hosts a competitive advantage, or a badly turned pile keeps resources separated in space and time, so poor competitors survive in pockets that better mixing would clear out.

02 — Selected Work

Recent first-author and co-first-author papers.

2026 · 1st authorAgriculture, Ecosystems
& Environment

Phosphorus mitigation through hay harvest: addressing legacy P in subtropical pasture

Harvest-based removal of legacy phosphorus from historically fertilized ranchland.

2026 · 1st authorSoil Biology
& Biochemistry

The abundance of a Fusarium taxa strongly predicts foliar phosphorus in Bahiagrass

A single fungal taxon as a predictor of plant nutrient status across a managed grassland.

2025 · Co-1stNew Phytologist

From nature to urbanity: phyllosphere microbiome and functional gene responses to the Anthropocene

Microbial community and functional gene turnover along an urbanization gradient.

2020 · Co-authorNature
Communications

Mutualist and pathogen traits interact to affect plant community structure in a spatially explicit model

Theory linking soil fungal traits to coexistence and diversity maintenance.

All 27 publications →

Get in touch.

Always interested in new collaborations, speaking invitations, and conversations about ecology and sustainability.

petticordd@caryinstitute.org