Articles tagged with Riparian Zones
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A national study found that healthy streams can filter out 40-60% of added nitrogen within 500 meters, while denitrification accounts for about 19%. Maintaining healthy riparian areas and complex stream channels is essential to prevent eutrophication.
A US EPA study found that wider vegetated borders around streams are the most effective way to protect wetlands from nitrogen pollution. The study showed that wide buffers (>50 meters) removed more nitrogen than narrow buffers (0-25 meters), and that herbaceous and forest vegetation were more effective when wider.
A new study published in Biological Conservation shows that wolves are allowing aspen trees to recover in Yellowstone National Park for the first time in over 50 years. The presence of wolves is altering elk behavior, causing them to avoid browsing in certain areas where they feel vulnerable, leading to a significant reduction in elk b...
A new study by Oregon State University researchers found that cougar predation has a significant impact on the environment, leading to severe ecological damage and loss of biodiversity in Zion National Park. The 'trophic cascade' effect, where the decline of a major predator leads to changes in herbivore populations and behavior, is ev...
Researchers from eight universities and conservation groups compiled a comprehensive database on nationwide river restoration projects, analyzing over 37,000 current projects. The study found that most projects were implemented in the Pacific Northwest or Chesapeake Bay watershed and had median costs of $57,000 in Georgia.
Researchers used historical photographs to analyze landscape change over time, finding that erosion is linked to clearing trees from hill slopes. Additionally, they found that riparian zones along rivers and streams have improved significantly over the past 30 years.
Researchers analyzed historical photographs to understand human-landscape interaction, revealing a link between tree clearing and erosion. The study found that riparian zones have improved over the past 30 years, benefiting stream health and ecosystem health.
The loss of gray wolves in western North America has triggered ecological effects on elk populations, beaver, birds, fish, and even tree species, leading to collapsing health of aspen and other vegetation.
A new study by the U.S. National Science Foundation highlights the vital importance of streamside forests in maintaining clean water and healthy ecosystems. The research, funded jointly by NSF and EPA, shows that these forests help filter pollutants from streams, enhance ecosystem processes, and support biodiversity.
The AAAS panel on human-nature interactions examines six NSF-supported projects focusing on urban development, Polynesian culture, and shoreline development. Biocomplexity researchers discuss the linkages between human behaviors and natural systems, highlighting the importance of interdisciplinary approaches and new technologies.
A new study found that listing endangered species may not effectively protect their habitats on private property. Landowners were more likely to improve or destroy habitats based on their values and perception of conservation responsibility.
The reintroduction of wolves to Yellowstone National Park has led to a remarkable recovery of cottonwood and willow species, as well as improved stream health. Young trees are now growing taller in areas where wolves are present, suggesting that the fear of predation is preventing elk from overgrazing.
Researchers found that removing cows from riparian habitats in the arid southwest increased vegetation density by 4-6 times and boosted bird populations, including species of special concern. The study suggests that restoring these areas can have profound benefits for breeding birds in the region.
A new study reveals that salmon populations are mutually dependent on riparian vegetation, which provides shade and large woody debris that support successful spawning. The researchers found a significant increase in nitrogen levels in plants near spawning sites, suggesting a two-way relationship between salmon and their ecosystems.