Related Experiment Video
Updated: Mar 29, 2026
10:18
Fragmenting Bulk Hydrogels and Processing into Granular Hydrogels for Biomedical Applications
Published on: May 17, 2022
7.1K
Hypothesis-driven and field-validated method to prioritize fragmentation mitigation efforts in road projects.
Summary
A new method models wildlife movement to identify critical road crossing sites for conservation. This approach helps prioritize mitigation efforts, ensuring landscape connectivity for species like elephants and buffalo.
Area of Science:
- Conservation Biology
- Landscape Ecology
- Wildlife Management
Background:
- Habitat fragmentation by linear infrastructure poses a significant threat to wildlife connectivity.
- Existing methods for identifying wildlife corridors often lack fine-scale predictions and prioritization capabilities for road crossing sites.
- Current approaches frequently rely on unvalidated assumptions about animal movement patterns.
Purpose of the Study:
- To introduce a novel method for identifying and prioritizing wildlife road crossing sites to mitigate fragmentation impacts.
- To address limitations in existing connectivity conservation methods, including scale and prioritization.
- To provide managers with a flexible tool for implementing effective road fragmentation mitigation strategies.
Main Methods:
- Stratified random transect surveys were used to model species distribution (African forest elephant, forest buffalo, sitatunga) in Gabon.
- Three movement models (local suitability, local least-cost, regional least-cost) were evaluated against validation data of actual road crossings.
- A flexible scoring method was developed to prioritize road sections for mitigation measures.
Main Results:
- The method successfully identified species- and season-specific movement patterns, including seasonal shifts in buffalo and sitatunga movements.
- African forest elephants exhibited consistent use of the study area across seasons.
- The developed scoring system effectively ranked road sections for their suitability for mitigation, adaptable to management goals and budgets.
Conclusions:
- The proposed method offers a significant improvement over existing techniques for identifying and prioritizing wildlife road crossings.
- It provides managers with actionable, data-driven insights for effective fragmentation mitigation, compatible with environmental impact assessment timelines.
- This approach enhances long-term landscape connectivity by informing the prioritization of infrastructure development impacts.
Related Concept Videos
02:31Habitat Fragmentation
21.9K
Habitat fragmentation describes the division of a more extensive, continuous habitat into smaller, discontinuous areas. Human activities such as land conversion, as well as slower geological processes leading to changes in the physical environment, are the two leading causes of habitat fragmentation. The fragmentation process typically follows the same steps: perforation, dissection, fragmentation, shrinkage, and attrition.
21.9K
01:17Design Example: Alignment of a Road Line Using GIS
411
The alignment of a road line using Geographic Information Systems (GIS) is a critical process in civil engineering, combining advanced technology with practical decision-making. This methodology begins with the collection of geospatial data, including information on land cover, geomorphology, drainage patterns, slope, and contour details. Such data is typically acquired through satellite imagery and GIS tools, offering a comprehensive understanding of the terrain.Once the data is gathered, it...
411
01:16Segregation in Fresh Concrete
981
Segregation in fresh concrete is a phenomenon where the components of the concrete mix separate, leading to uneven distribution and compromised structural integrity. This separation typically occurs when concrete is subjected to excessive horizontal movement within forms, or when it is dropped from considerable heights or forced through narrow, winding paths. As a result, heavier coarse aggregate particles settle at the bottom, while lighter, finer materials such as cement and water rise to the...
981
01:28Design Example: Joints in Concrete Pavements
645
Concrete pavement joints are essential for maintaining the structural integrity and longevity of pavement by controlling where and how the pavement cracks. These joints can be categorized based on their functions, such as contraction or control joints, construction joints, isolation joints, and expansion joints.
Contraction joints are typically formed by sawing a groove into the concrete shortly after it has hardened. This creates a weakened vertical plane, deliberately encouraging cracking at...
Contraction joints are typically formed by sawing a groove into the concrete shortly after it has hardened. This creates a weakened vertical plane, deliberately encouraging cracking at...
645
01:23Types of Building Separation Joints
706
Building separation joints divide large or complex building structures into smaller, discrete units that can move independently. These joints are categorized into three types: volume-change joints, settlement joints, and seismic separation joints.
Volume-change joints address the effects of expansion and contraction due to temperature and moisture variations. They are strategically placed at discontinuities in a building's mass where cracking is most likely and are spaced about 150 to 200...
Volume-change joints address the effects of expansion and contraction due to temperature and moisture variations. They are strategically placed at discontinuities in a building's mass where cracking is most likely and are spaced about 150 to 200...
706
01:29Preplaced Aggregate Concrete
464
Preplaced aggregate concrete is ideal for construction environments that are not easily accessible. The process begins by properly wetting the gap-graded coarse aggregates to remove the dirt, then placing it in the form and compacting it. Voids are filled with a mortar mix pumped under pressure through slotted pipes. This mortar typically consists of Portland cement, pozzolan, fine aggregates, water, and a fluidizing aid. The pozzolan helps reduce bleeding and segregation while improving the...
464