Recent Journal article

COnservation Letters


Biodiversity conservation efforts have been criticized for generating inequitable socio-economic outcomes. These equity challenges are largely analyzed as place-based problems affecting local communities directly impacted by conservation programs. The conservation of migratory species extends this problem geographically since people in one place may benefit while those in another bear the costs of conservation. The spatial subsidies approach offers an effective tool for analyzing such relationships between places connected by migratory species.

Conservation Letters cover


News Article

monarch butterflies

Butterflies land on branches at Monarch Grove Sanctuary in Pacific Grove, Calif., in November. (Nic Coury / Associated Press)

The Los Angeles Times

The parallel struggles of human and monarch migration

AUG. 19, 2022

In July, the monarch butterfly was added by the International Union for Conservation of Nature to its red list of threatened species, a recognition that the insect’s continuing decline could lead to extinction. 

University of Arizona News

Summer is bat-watching season in Tucson: Here's what you should know.

Two University of Arizona experts talk about why Southern Arizona is a mecca for bats, share tips on how to best observe them, and clear up myths surrounding these fascinating creatures of the night.

Studying bats under a Tucson bridge
Science writer Daniel Stolte tries to capture video of bats getting ready to fly out from the bridge on North Campbell Ave over the Rillito River in Tucson, Arizona.

Slide Presentation


See our short film (4:20) about the conservation of ecosystem services from migratory species. This film focuses on pest-control services provided by Mexican free-tailed bats. These bats overwinter in Mexico and females migrate for the summer months to the southwestern US where they gather in large maternity roosts and consume vast quantities of flying insects every night. This natural pest-control service has supported agriculture in the US/Mexico border region for generations.