Non-Forested Wetlands | Adaptation Workbook

The location along riverways and species composition of mesic bottomland forests could facilitate migration.

Seeds from species like sycamore, elm, sweetgum, cottonwood, and hackberry are able to disperse long distances, and are further facilitated by being near rivers that can carry them long distances.

Read more about The location along riverways and species composition of mesic bottomland forests could facilitate migration.

Humans have altered flood regimes in mesic bottomland forests, which may be exacerbated by climate change.

Many mesic bottomland forests have been altered from their original state due to the placement of dams and other water control structures. This has already disrupted natural flood regimes, which will likely be further altered by the direct effects of changes in precipitation and indirect effects of human demands on water during drought periods.

Read more about Humans have altered flood regimes in mesic bottomland forests, which may be exacerbated by climate change.

Boxelder may increase in abundance in mesic bottomland forests by the end of the century.

The models available are not equipped to capture the complex hydrologic processes that occur in these systems, so actual habitat suitability might differ from what is projected. With that caveat in mind, multiple models models tend to agree that habitat suitability for boxelder may increase. Boxelder is not currently a dominant species in mesic bottomland forests, but may increase in dominance from increased habitat suitability.

Read more about Boxelder may increase in abundance in mesic bottomland forests by the end of the century.

American beech and black walnut, common in mesic bottomland forests, are projected to decline in habitat suitability by the end of the century.

Read more about American beech and black walnut, common in mesic bottomland forests, are projected to decline in habitat suitability by the end of the century.

Habitat suitability is expected to remain stable for bitternut hickory, sycamore, and white oak in mesic bottomland forests through the end of the century.

The models available are not equipped to capture the complex hydrologic processes that occur in these systems, so actual habitat suitability might differ from what is projected. With that caveat in mind, multiple models models tend to agree about the general trajectory of the dominant species in these systems.Some models and scenarios suggest a decrease in habitat suitability or establishment for white oak, but since it is a long-lived species that can tolerate a wide variety of stressors no large changes in white oak are expected over the next several decades.

Read more about Habitat suitability is expected to remain stable for bitternut hickory, sycamore, and white oak in mesic bottomland forests through the end of the century.

Habitat suitability is expected to increase for sweetgum and eastern cottonwood by the end of the century, which are common species in mesic bottomland forests.

Read more about Habitat suitability is expected to increase for sweetgum and eastern cottonwood by the end of the century, which are common species in mesic bottomland forests.

A projected increase in heavy precipitation in the winter and spring in the coming decades could have a negative impact on mesic bottomland forests.

This system is characterized by short, infrequent floods. Extended wet periods could increase both the frequency and duration of flooding, which many species would not be able to tolerate.

Read more about A projected increase in heavy precipitation in the winter and spring in the coming decades could have a negative impact on mesic bottomland forests.

A high soil water-holding capacity in many locations might allow mesic upland forests to persist on the landscape.

Mesic upland forests tend to have a thick litter layer and high soil organic matter, allowing them to retain moisture. This can help protect them from drying and wildfire during short periods of reduced precipitation.

Read more about A high soil water-holding capacity in many locations might allow mesic upland forests to persist on the landscape.

Some invasive plant species common in mesic upland forests, such as bush honeysuckle and kudzu, may benefit from warmer temperatures.

Some models suggest an increase in habitat suitability for kudzu, due to milder winters and a longer growing season. It is hypothesized that nonnative plant species such as these will fill in the gaps created as dominant species decline.

Read more about Some invasive plant species common in mesic upland forests, such as bush honeysuckle and kudzu, may benefit from warmer temperatures.

Bitternut hickory, red maple, and white oak are among the few species in mesic upland forests for which conditions may continue to be favorable in some areas throughout the rest of the century.

Multiple forest impact models tend to agree that these species are likely to retain suitable habitat and establishment across a range of climate scenarios into the end of the century.

Read more about Bitternut hickory, red maple, and white oak are among the few species in mesic upland forests for which conditions may continue to be favorable in some areas throughout the rest of the century.