Is there a negative perception of DOTs if the mowing schedule leaves taller vegetation throughout more of the year and later into the growing season? Does education about the reasoning

Interseeding (also known as overseeding) can increase flowering plant diversity in grass-dominated stands of vegetation but has rarely been used on roadsides. Research is needed to better understand how to

Computer Vision is a subfield of Artificial Intelligence (AI)/Machine Learning (ML) that uses image recognition to identify wildlife species. The technology has multiple applications for transportation projects including protected species

Assess the use of eDNA for detecting the presence/absence of protected species on transportation projects. If the application shows potential for accurate results that would be acceptable to natural resource

Transportation-related infrastructure affects wildlife in a variety of ways by altering the physical environment. These alterations often negatively impact wildlife through displacement, barriers to movement, and increased mortality. They can

Background Roadway lighting has been shown to measurably reduce nighttime fatal and other crashes. However, roadway lighting can negatively impact insects and animals through attraction and disorientation or by disrupting

TERI Database Administrator Notes:  Not recommended at present time by 2009 Natural Systems Subcommittee. Highway crossings can have a negative impact on ecosystems by creating barriers that inhibit the movement

Background: The U. S. Congress enacted the Migratory Bird Treaty Act (MBTA) in 1918 to implement several international treaties.  The treaties were entered into because of concerns about the decline

Bats are an indispensable natural resource. Notably, they consume enormous quantities of farm and forest insect pests, saving the agricultural industry millions in lost products. Unfortunately, more than half of

Using a modification of the methods used by J.C. Rochaa et al. J. Braz. Chem. Soc. Water Samples from 5-10 NW Salmon Streams will be taken and the fulvic acid

Aquatic insects such as dragonflies, damselflies, and mayflies use horizontally polarized light as a cue to detect water where they lay their eggs. It is crucial that these insects lay

Widespread contamination of freshwater habitats and groundwater sources from road salt deposition is well documented. The negative effects of road salt on freshwater habitats include changes in density gradients, increased

TERI Database Administrator Notes.  Not recommended at present time by 2009 Natural Systems Subcommittee.  Subcommitee recommended funding ID#456, which addresses similar issues. This would be a follow-up to research on the

TERI Administrator Update (Jan 2009) – Research Underway – The Effectiveness of Vertebrate Passage and Prevention Structures: a Study of Boeckman Road in Wilsonville (completion date: Sept. 2009) Wildlife collisions

Confocal Microscopy coupled with vital stains, can be used to characterize and profile disease states in coral. We wish to compare the appearance of various reef forming coral and algal

Research problem statement – Not every species or ecosystem process is impacted by existing or planned highways. In each region of the country, different species are impacted by highways. Several

TERI Database Administrator Notes.  Not recommended at present time by 2009 Natural Systems Subcommittee. Transportation noise has the potential to negatively impact animal populations.  In recent years several studies have

TERI Database Administrator Notes.  Not recommended at present time by 2009 Natural Systems Subcommittee. The Massachusetts Division of Fisheries and Wildlife (DFW) is in the process of developing an innovative,

The safety and maintainece of Idaho’s road and highway bridges is essential and their regular inspection, rennovation, and replacement is an important responsibility of the Transportation Department.   Incidently and unintentionally,

TERI Database Administrator Notes.  Not recommended at present time by 2009 Natural Systems Subcommittee. Along Route 20 from Ashton to the Montana border in eastern Idaho motorists are threatened by

Idaho has mapped approximately 315 wildlife linkages associated with its road and highway system using expert opinion workshops and a rapid assessment protocol. Of these, 37 have been identified as

The California Department of Transportation (Caltrans) owns thousands of bridges throughout California, many of which provide habitat for bats.  Bats seek out bridges for thermal regulation during reproduction, food digestion,

Research Objective: To develop a set of best practices for transportation practitioners to assess genetic connectivity § Do a synthesis of the literature on conservation genetics, contact conservation geneticists, and

The threats to human safety posed by high rates of large mammal road-kill are well reported in the literature, as well as the adverse effects of road-kill on mammal populations;

An overall assessment of fish passage conditions from headwaters to estuaries requires the analysis of the entire channel network connecting those habitats. Such an analysis should not be performed in

Scope:  (1) Objectives.  The objective of our proposed scope of research is to research and develop professional activities aimed at incorporating wildlife mitigation into standardized federal and state highway planning and

Bridges built in previous decades often incorporated expansion joints that provided optimal roosting habitat for bats.  This is due to the combination of favorable gap size, open canopy in road

The objective of this research is to develop a PDA that obtains the matrices identified for structures, habitats and species so that field personnel will have a tool for assessing

This study would examine the response of pollinator movement and subsequent gene flow and reproductive fitness between and within rare endemic plant populations that are fragmented by roads by road

Washington State has been replacing culverts with new larger culverts, or bridges, using an algorythm called “Stream simulation” for over a decade. These larger passages provide dry banks under highways during

Research is necessary to investigate the effects of roads and passages on threatened Mojave desert tortoise genetics, demography, and population connectivity. It will also be helpful to conduct additional research

The benefits of bats to humans and the environment are well known. Some are principal pollinators and others consume large quantities of insects detrimental to agricultural crops and human health.

Even in remote areas of California, roads are challenging for wildlife-they lead to car strikes, changes in microhabitat characteristics along road boundaries, and large-scale habitat fragmentation. We all suspect that

Background and Objectives Roads of different sizes, substrates, and traffic volumes have been shown to inhibit the movement of large mammals, small mammals, herpetofauna, and invertebrates (Brehme et al. 2013).

Migratory birds establish nests on bridge structures and within roadway r-o-w’s. Restricted activity periods due to nesting restrict construction, maintenance and rehabilitation of roads and bridges leading to increased costs.

Traditionally, state and local governments install the smallest structure necessary to pass a certain measurable flow as required by local, state and federal rules. Structures that are sized to bankfull-width

To identify the likelihood of suitable roost tree occupancy for both the Indiana and Northern Long-eared bat as the distance from cleared ROW increases. This would require a multi-year habitat

The study would determine if Monarchs are attracted to vegetation within highway rights-of-way, if this attraction is due to milkweed species being present, and would estimate roadside mortality. Tasks required

Roads inhibit the movement of many terrestrial species, including mammals and reptiles, by increasing mortality or through avoidance by wildlife (Trombulak and Frissell 2000). In many cases, evidence for use

Bat populations that hibernate in colonies in caves and mines are in steep decline across the U.S. due to white nose syndrome. Loss of summer roosting habitat can exacerbate the

There would be two parts to this study: 1) Literature Review and Synthesis of Current Practices and 2) Development of Cost-Effective Monitoring Techniques 1. Literature Review and Synthesis of Current

Gather and summarize existing information on crossing structures and methods for monitoring use by small terrestrial mammals, reptiles and amphibians to develop a summary of available reports, plans and design

Develop a consistent methodology for analyzing noise impacts on different terrestrial species. Develop standard metrics and procedures for the DOTs to conduct noise analyses of our highway projects on wildlife,

Synthesis, case studies, and summary of approaches to conservation of pollinating insects, including both species listed under the Endangered Species Act and unlisted species. The synthesis would include information from

Animal-vehicle conflicts (AVCs), and particularly the ever increasing deer-vehicle collisions, cause major transportation safety issues on U.S. roadways due to habitat fragmentation sustained by transportation developments. Therefore, the ability to

The optimal slope of approaches to highway overpasses for wildlife does not appear to be well documented. Understanding slope constraints could inform the design of overpass structures along the nation’s

The efficacy of scuppers or cutouts in ‘Jersey’ or concrete median barriers on passing wildlife remains untested; yet DOTs utilize scuppers as mitigation for the impacts of constructing concrete median

A suggestion was made develop a Decision Support Guide for Installation of Wildlife-Vehicle Collision (WVC) Reduction Countermeasures as well as potentially adding wildlife-vehicle collision prevention measures to the FHWA Proven

Summary of current practices by DOTs to use emerging data collection methods to address ecological concerns for transportation projects. These methods include (1) environmental DNA (eDNA) collection and analysis methods

Directional fencing is an important component of wildlife crossing designs. When successful, fencing can guide animals to a safe crossing location and significantly reduce road mortality. Most current research is

Wildlife-vehicle conflicts (WVC) are a major safety, mobility, and sustainability concern for transportation infrastructure. Cross-referencing WVC data across states with right-of-way (ROW) vegetation management may yield ROW maintenance recommendations that

Fish passage barriers are a significant threat to the recovery of threatened and endangered fish and other aquatic species. There are often limitations to transportation funding that require the prioritization

Culvert and bridge design involve safely passing floods and debris while minimizing instability and maintenance requirements. Culverts and bridges also have the potential to reduce wildlife-vehicle conflicts (WVC) by facilitating

As more state DOTs are installing wildlife fencing, overpasses and underpasses, maintenance staff are faced with deciding how to manage vegetation, maintain structures intended for different types of animals, and

The scope of this project would be aimed toward gathering data on Desert Tortoise populations in the southern portion of the Owens Valley in California. As the Owens Valley represents

BACKGROUND There is a need to investigate the effects of artificial light on a growing list of bats, birds, insects, fish, and other members of the environmental community which may

Blasting, bridge pier construction, and other construction activities can temporarily increase noise and vibration levels, but to what extent does this occur inside caves? Collect and analyze noise and vibration