An improved method to estimate pigeon populations in urban areas
保存先:
| 著者: | , |
|---|---|
| フォーマット: | artículo original |
| 状態: | Versión publicada |
| 出版日付: | 2018 |
| その他の書誌記述: | The Rock Pigeon, Columba livia, is rare in natural environments but extremely successful in urban areas all over the world. Management programs are important because it is considered a pest in many cities. Nevertheless, no appropriate evaluation of methods to estimate urban pigeon populations is available in the literature. We compared three methods: a) the frequently used Stratified grids; b) Point counts, i.e. total pigeon counts with a mechanic counter in sampling points with a 50m radius; and c) Panoramas, 360o panoramic photographs. In nine urban parks in central Costa Rica, we made 1350 counts in total and compared: coefficient of variation (to assess precision); accuracy; time counting or taking photographs in situ; time merging photographs, counting pigeons in photographs, or typing data; and advantages or disadvantages. The Panorama Method is cheap, precise, accurate, secure, fast and easy. It can be used as an indicator or to estimate the actual population. |
| 国: | Portal de Revistas UNED |
| 機関: | Universidad Estatal a Distancia |
| Repositorio: | Portal de Revistas UNED |
| 言語: | Inglés |
| OAI Identifier: | oai:revistas.investiga.uned.ac.cr:article/2039 |
| オンライン･アクセス: | https://revistas.uned.ac.cr/index.php/cuadernos/article/view/2039 |
| Access Level: | acceso abierto |
| キーワード: | Rock pigeon urban parks correction factor population density panoramic photograph paloma de castilla parques urbanos factor de corrección densidad poblacional fotografías panorámicas |