Journal Article

Hawaiian forest bird trends: Using log-linear models to assess long-term trends is supported by model diagnostics and assumptions (reply to Freed and Cann 2013)

Woodworth, Bethany L., Gorresen, P. Marcos, Jeffrey, John J., Camp, Richard J., Pratt, Thane K.

2014

Overview

Freed and Cann (2013) criticized our use of linear models to assess trends in the status of Hawaiian forest birds through time (Camp et al. 2009a, 2009b, 2010) by questioning our sampling scheme, whether we met model assumptions, and whether we ignored short-term changes in the population time series. In the present paper, we address these concerns and reiterate that our results do not support the position of Freed and Cann (2013) that the forest birds in the Hakalau Forest National Wildlife Refuge (NWR) are declining, or that the federally listed endangered birds are showing signs of imminent collapse. On the contrary, our data indicate that the 21-year long-term trends for native birds in Hakalau Forest NWR are stable to increasing, especially in areas that have received active management.

• Publisher: The Cooper Ornithological Society,Cooper Ornithological Society,American Ornithological Society
• Subject: Animal populations / Birds / COMMENTARY / Endangered animals / Forest conservation / Forest ecology / Forests / Hawaiian forest birds / Indigenous animals / Linear regression / log-linear models / Mathematical models / model diagnostics / Ornithology / Population trends / Sampling techniques / Time series / Time series models / trends / Wildlife / Wildlife biology / Wildlife conservation / Wildlife refuges