Spatiotemporal Patterns and Drivers of Fish Biodiversity on a Remote Freshwater Archipelago
Gallagher DJ , Romanski MC, Glase JD, Moore SA, Larson CE, Branstrator DK , Hrabik TR. 2026. Spatiotemporal Patterns and Drivers of Fish Biodiversity on a Remote Freshwater Archipelago. Journal of Biogeography. 53(1)
Fish communities are shaped by environmental filters operating across different spatiotemporal scales. While many recent studies focus on anthropogenic gradients, few can isolate the role of natural drivers in community assembly. Isle Royale's inland lakes offer a rare opportunity to explore long-term fish biodiversity dynamics with minimal confounding influences. We analysed fish communities in 23 lakes surveyed in the 1920s, 1990s, and 2020s to 1) assess temporal changes in richness and composition 2) identify lakes and species experiencing the greatest change, and 3) evaluate environmental drivers of community structure.
- Type
- Journal Article
- Authors
- Gallagher, David; Romanski, Mark; Glase, Jay; Moore, Seth; Larson, Courtney; Branstrator, Donn; Hrabik, Thomas
- Units
- ISRO
- Keywords
- community assembly, diversity, fish, Isle Royale, isostatic rebound, spatiotemporal trends
- License
- Creative Commons Attribution 4.0 International