Microscale distribution patterns of terrestrial bryophytes in a subalpine forest: the use of logistic regression as an interpretive tool

This study investigated microhabitat relationships of terrestrial bryophytes in a subalpine forest of coastal British Columbia. Substratum affinities were characterized for dominant bryophytes. Logistic regression analysis was used to gain insight into the ecological determinants of fine scale (0.1 m2) bryophyte distribution by examining the predictive relationship between bryophyte species occurrence and localized environmental conditions, as well as the coverage of other bryophytes. The predictive relationships were compared to evaluate the relative importance of environmental factors versus interspecific interactions in structuring bryophyte communities. The results indicate that bryophytes show unique responses in their relationships to environmental conditions and other bryophytes. Positive feedback appears to be an important process among terrestrial bryophytes in subalpine forests

Mule Deer Responses to Deer Guards

In this investigation the effectiveness of guards 12, 18, and 24 feet long in preventing mule deer from crossing vehicle openings in fences 8 feet high was evaluated. The guards were constructed of flat mill steel rails 1/2 × 4 × 120 inches, and were tested under both controlled and field conditions. Under controlled tests, 16 of 18 deer successfully crossed the guard. Fifteen deer and one elk crossed guards under field conditions. Deer did not attempt wide jumps over the guards, but rather walked, trotted, or bounded across them. Use of this guard type under the condition tested is not recommended.This material was digitized as part of a cooperative project between the Society for Range Management and the University of Arizona Libraries.The Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact [email protected] for further information.Migrated from OJS platform August 202

Ichtiocenosis structure of Agriș and Almaş rivers (Sălaj Conty)

Agriş and Almas Rivers are tributaries of the Someș River from Salaj County. Both rivers originate from the North slope of Meseș Montain and flows into the Someș River, near the Jibou town. Both are rivers with a relatively natural state, less affected by anthropogenic factors, exceptions are endangered areas where were built longitudinal dams for flood protection. So far, on these rivers there were no ichthyological research conducted. Based on the collected material we performed a complex comparative evaluation of ichtiocenosis of this two rivers and due to their considerable value, we proposed the establishment of a protected area encompassing the entire basin of these rivers