Wildlife and Plants

Water levels in the Great Lakes are fluctuating in ways that we have not seen in the past, with both historically low- and high-water levels occurring in the last decade. Expectations are that larger and more frequent water-level fluctuations will occur in response to climate change. The increased variability in lake levels has implications for the management of invasive plants found in...

The Bonnet Carré spillway (BCS) is a flood-control structure along the Lower Mississippi River designed to prevent flooding in the city of New Orleans by diverting excess water into the nearby Lake Pontchartrain estuary. Alarmingly, the BCS was opened as many times over the past decade (2011–2020) as it had been over the six prior decades combined (1951–2010), with devastating effects on...

Amphibians in the US Caribbean, like the well-known coquí frog, are particularly vulnerable to climate change. Coquí frogs are represented by 17 species across Puerto Rico and US Virgin Islands and include several mountainous and coastal species that are threatened by extreme heat and drying, loss of coastal freshwater marshes through saltwater intrusion, or both. Over the past decade...

Invasive species have had devastating effects on Pacific Island biodiversity, ecosystem services, food, infrastructure, culture, and public health. Meanwhile, climate change is expected to worsen droughts and wildfires, increase storm severity, and raise the temperature, acidity, and sea level, all of which exacerbate invasive species issues and complicate management. Invasive species...

Mosquito-borne disease is the biggest threat to Hawai‘i’s remaining native forest birds, of which more than half are threatened or endangered. Currently, disease-carrying mosquitoes are unable to move into colder high-elevation forests, but as the islands warm due to climate change, mosquitoes are steadily moving into the last native bird strongholds. Mosquito suppression efforts are...

Hawaiʻi is known as the “endangered species capital of the world,” an unwelcomed label brought on by more than a century of habitat destruction, invasive species spread, and pollinator and seed disperser declines. Hawaiʿi is home to 400 endangered plant species, most of which are found nowhere else in the world. Conservation managers have spent decades putting enormous effort into...

Inland fisheries have tremendous cultural, economic, and subsistence value. However, climate change brings new stresses to land-locked fisheries that raise novel challenges for resource managers. One fundamental challenge in inland fisheries is how to best assess and manage data-limited fisheries when resources are finite and uncertainty is pervasive. To address this challenge, we will...

The southeastern U.S. is home to many rare plant species, some at risk of extinction. A new national list has identified the top plant “Species of Greatest Conservation Need” (SGCN) across the region which can help southeastern states update their State Wildlife Action Plans (SWAPs) to include plants for the first time. In partnership with the Southeast Plant Conservation Alliance...

Many inland bodies of water in western Louisiana are receiving too much sediment and nutrient pollution from upstream which has caused declines in the health of many fisheries. These bodies of water include many traditional lake-based fisheries of the Chitimacha Tribe of Louisiana (CTL), and fisheries used by visitors, providing critical tourism and economic development dollars to the...

Project Overview Climate change threatens plants and animals across the US, making it important to have tools that can efficiently assess species’ vulnerabilities. In this project, CASC scientists and NatureServe are collaborating to update a popular Climate Change Vulnerability Index to include the latest scientific data, improved metrics, and new user-friendly technology. The tool will...

Project Overview Streams in Southeast Alaska are changing rapidly due to climate change. Warmer temperatures are bringing more rain, less snow, and causing glaciers to retreat, all of which affects stream flow and food sources for young salmon. Researchers supported by this Alaska CASC project will study whether juvenile salmon can adapt by moving between different types of streams...

Project Overview State Wildlife Action Plans (SWAPs) guide state-level wildlife conservation, yet recent plans have largely lacked information on how climate change may affect vulnerable species and habitats. With support from the Southeast and South Central CASCs, scientists are providing climate summaries, future projections, and synthesized vulnerability information to SWAP...