Tropical Ecology and Conservation [Monteverde Institute]

Alternative Title

La relación entre la llovizna y la reproducción en Scaphyglottis acostaei (Orchidaceae)

Creator

Rebecca Lara

Files

Download

Download Full Text (420 KB)

Publication Date

May 2001

Abstract

I examined how the reproduction and fitness of the orchid, Scaphyglottis acostaei depends on the water resources derived from cloud mist in Monteverde, Costa Rica. Thirty-six individuals of S. acostaei were selected to undergo treatments of mist exclusion, mist enhancement and light modification for 15 days. The pseudobulb width changed significantly over the 15 days for the four treatments, suggesting that mist precipitation is a limiting resource for S. acostaei. Additionally, mist was collected on the northeast and southwest sides of four pasture trees, and a total of 139 individual orchids were sampled for number of fruits, racemes and leaves, and leaf length. I found a higher reproductive success of S. acostaei on the northeast sides of the sample trees, which is partially explained by the trend that those individuals were also exposed to a higher more frequent amount of mist than individuals on the southwest sides. My findings suggest that even orchids with specialized mechanisms for coping with water limitation are sensitive to changes in mist frequency. Yo examine como la reproducción y sobrevivencia de la orquídea, Scaphyglottis acostaei, depende de los recursos de agua que viene en la neblina en Monteverde, Costa Rica. Treinta y dos muestras de S. acostaei fueron elegidos para tratarlos con de Excluidores de Neblina, Aumentadores de Neblina, y Modificación de Luz por 15 días para los cuatro tratamientos, sugiriendo que la neblina es un recurso limitante en S. acostaei. La neblina se recogió en el lado noreste y sudeste de cuatro árboles en el pasto, y el número de frutos, racimos y las hojas de 139 orquídeas fueron contados. Yo encontré un éxito reproductivo más alto en el lado noreste de los árboles, que fue explicado por la tendencia que estas orquídeas eran expuestas una cantidad de neblina más alto y frecuente que las orquídeas en el lado sudeste. Mis resultados sugieren que las orquídeas con adaptaciones para compensar la limitación de agua fueron susceptibles a cambios en la frecuencia de neblina.

Keywords

Orchids--Reproduction, Orquideas--Reproduccion, Monteverde Biological Station (Costa Rica), Estacion Biologica de Monteverde (Costa Rica), CIEE Spring 2001, CIEE Primavera 2001

Description

Student affiliation : Department of Environmental Science, Northern Arizona University Digitized by MVI

Subject: topical

Orchids--Reproduction; Orquideas--Reproduccion; CIEE Spring 2001; CIEE Primavera 2001

Subject: geographic

Monteverde Biological Station (Costa Rica); Estacion Biologica de Monteverde (Costa Rica)

Genre

Reports

Holding Location

Monteverde Institute MVI

Identifier

M39-00051

The relationship between mist exposure and reproductive success in Scaphyglottis acostaei (Orchidaceae)

Share

COinS
 
 

To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.