- Roger LathamPennsylvania Natural Heritage ProgramEcologist/Conservation Biologist(610) 565-3405
- Jesse LeddickMassachusetts Natural Heritage & Endangered Species ProgramAssistant Director for Natural Heritage & Endangered Species(781) 375-7597
- Jeffrey LeeMinnesota Natural Heritage ProgramPlant Ecologist / Botanist218-723-4763 ext. 227
- Ryan LepschVirginia Division of Natural HeritageShenandoah Valley Region Operations Steward(757) 812-4024
- Péroline LescotCentre de Donnees sur le Patrimoine Naturel du QuébecZoologist (Freshwater fishes)(418) 627-8694 ext. 707590