Comparison of two double-observer point-count approaches for estimating breeding bird abundance

Article Abstract:

The detection probabilities and associated levels of precision generated by both double-observer approaches, the dependent observer and independent observer, were compared to ascertain which technique generates data that are more accurate and more feasible to apply in the field. The dependent-observer approach resulted in higher observer specific and joint detection probabilities and it is suggested that this method be used when surveying birds using point counts.

User Contributions:

Comment about this article or add new information about this topic:

Comment:  (50-4000 characters)

Name:

E-mail:

Security Code:

Effects of prebaiting on small mammal trapping success in a Morrow's honeysuckle-dominated area

Article Abstract:

The influence of prebaiting on small mammal trapping success was investigated in an exotic and invasive shrub community, Morrow's honeysuckle (Lonicera morrowis), using 480x120-m live trapping grids at Pennsylvania, U.S. The observations reveal trapping success for small mammals is not influenced by prebaiting in regions with dense, exotic shrub.

User Contributions:

Comment about this article or add new information about this topic:

Comment:  (50-4000 characters)

Name:

E-mail:

Security Code:

Breeding birds in riparian and upland dry forests of the Cascade Range

Article Abstract:

A study is done to quantify the breeding bird abundance, diversity, and indicator species in riparian and upland dry forest on the east slope of the Cascade Range. Results of this study facilitate the forest managers to predict and monitor shifts in upland forest species composition from thinning.

User Contributions:

Comment about this article or add new information about this topic:

Comment:  (50-4000 characters)

Name:

E-mail:

Security Code: