Identifying Native and Exotic Predators of Ground-Nesting Songbirds in Subantarctic Forests in Southern Chile

Thumbnail image of item number 1 in: 'Identifying Native and Exotic Predators of Ground-Nesting Songbirds in Subantarctic Forests in Southern Chile'.
Thumbnail image of item number 2 in: 'Identifying Native and Exotic Predators of Ground-Nesting Songbirds in Subantarctic Forests in Southern Chile'.
Thumbnail image of item number 3 in: 'Identifying Native and Exotic Predators of Ground-Nesting Songbirds in Subantarctic Forests in Southern Chile'.
Thumbnail image of item number 4 in: 'Identifying Native and Exotic Predators of Ground-Nesting Songbirds in Subantarctic Forests in Southern Chile'.
Showing 1-4 of 7 pages in this article.

PDF Version Also Available for Download.

Description

This article describes an artificial nest experiment to assess the impact of predators on daily survival rates of artificial bird nests in three different habitat types.

Physical Description

7 p.

Creation Information

Maley, Brett M.; Anderson, Christopher B.; Stodola, Kirk & Rosemond, Amy D. April 28, 2011.

Context

This article is part of the collection entitled: UNT Scholarly Works and was provided by the UNT College of Arts and Sciences to the UNT Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 57 times. More information about this article can be viewed below.

Who

People and organizations associated with either the creation of this article or its content.

Authors

Publisher

Provided By

UNT College of Arts and Sciences

The UNT College of Arts and Sciences educates students in traditional liberal arts, performing arts, sciences, professional, and technical academic programs. In addition to its departments, the college includes academic centers, institutes, programs, and offices providing diverse courses of study.

About | Browse this Partner

Contact Us

Corrections Questions

What

Descriptive information to help identify this article. Follow the links below to find similar items on the Digital Library.

Titles

  • Main Title: Identifying Native and Exotic Predators of Ground-Nesting Songbirds in Subantarctic Forests in Southern Chile
  • Parallel Title: Identificando Los Depredadores Nativos Y Exóticos Sobre Los Passeriformes Que Nidifican en El Suelo De Los Bosques Subantárticos en El Sur De Chile

Description

This article describes an artificial nest experiment to assess the impact of predators on daily survival rates of artificial bird nests in three different habitat types.

Physical Description

7 p.

Notes

Resumen: Las aves Passeriformes constituyen el grupo más diverso y abundante de vertebrados en el archipiélago austral de Sudamérica. Sin embargo, se desconocen varios aspectos claves de su ecología, tales como el éxito de nidificación y sus depredadores. El visón americano (Neovison vison) fue introducido a Tierra del Fuego en la década de 1940 e invadió la Reserva de la Biosfera Cabo de Hornos, al sur del Canal Beagle en 2001. Como nuevo depredador tope, el visón invasor puede tener impactos significativos sobre las especies de aves nativas, incluyendo algunos Passeriformes del bosque que nidifican al nivel del suelo. Para determinar la identidad y el efecto de los depredadores de nidos en el suelo, condujimos un experimento con nidos artificiales y determinamos el impacto de los depredadores en las tasas de supervivencia diarias de nidos en tres tipos de hábitats diferentes (matorrales antropogénicos, pastizales de castoreras y bosques). El 65% de los nidos fueron depredados (40% debido al chercán nativo [Troglodytes musculus] y 25% debido al visón exótico). Sin embargo, se encontró que el visón fue la causa del 53% del fracaso de los nidos en el matorral antropogénico. Estos resultados demuestran que tanto los depredadores nativos como los exóticos afectan el éxito de nidificación de la avifauna del bosque subantártico, pero el efecto de un depredador tope invasor, como el visón, constituye una nueva amenaza que podría afectar el éxito de nidificación y la sobrevivencia de los adultos.

Abstract: Birds constitute the most diverse and abundant group of vertebrates in the austral archipelago of southern South America; yet key aspects of their ecology such as nesting success and predators are little known. The American mink (Neovison vison) was introduced to Tierra del Fuego in the 1940s and expanded its range south of the Beagle Channel into the Cape Horn Biosphere Reserve by 2001. As a new top predator, the invasive mink may have significant impacts on naïve avian species, including some forest Passeriformes that nest on the ground. To determine the identity and effect of ground nest predators, we conducted an artificial nest experiment and assessed the impact of predators on daily survival rates of artificial nests in three different habitat types (anthropogenic shrublands, beaver meadows, and forests). We found that 65% of nests were depredated (40% due to native Southern House Wrens [Troglodytes musculus] and 25% from mink). However, we discovered that mink were the cause of 53% of the nest failures in the anthropogenic shrubland. These findings demonstrated that both native and exotic predators affect nesting success of subantarctic forest avifauna, but the infuence of an invasive top predator, the mink, constitutes a new threat that will likely affect both nesting success and parental survival.

Source

  • Anales del Instituto de la Patagonia, 39(1), Universidad de Magallanes, April 28, 2011, pp. 1-7

Language

Item Type

Identifier

Unique identifying numbers for this article in the Digital Library or other systems.

Publication Information

  • Publication Title: Anales del Instituto de la Patagonia
  • Volume: 39
  • Issue: 1
  • Pages: 7
  • Page Start: 51
  • Page End: 57
  • Peer Reviewed: Yes

Collections

This article is part of the following collection of related materials.

UNT Scholarly Works

Materials from the UNT community's research, creative, and scholarly activities and UNT's Open Access Repository. Access to some items in this collection may be restricted.

About | Browse this Collection

What responsibilities do I have when using this article?

Digital Files

When

Dates and time periods associated with this article.

Creation Date

  • April 28, 2011

Added to The UNT Digital Library

  • June 26, 2018, 9:56 p.m.

Description Last Updated

  • Nov. 16, 2023, 1:45 p.m.

Usage Statistics

When was this article last used?

Yesterday: 0
Past 30 days: 0
Total Uses: 57
More Statistics

Where

Geographical information about where this article originated or about its content.

Place Name

Publication Place

Map Information

  • map marker Place Name coordinates. (May be approximate.)
  • Repositioning map may be required for optimal printing.

Mapped Locations

Interact With This Article

Here are some suggestions for what to do next.

Start Reading

Thumbnail image of item number 1 in: 'Identifying Native and Exotic Predators of Ground-Nesting Songbirds in Subantarctic Forests in Southern Chile'.
Thumbnail image of item number 2 in: 'Identifying Native and Exotic Predators of Ground-Nesting Songbirds in Subantarctic Forests in Southern Chile'.
Thumbnail image of item number 3 in: 'Identifying Native and Exotic Predators of Ground-Nesting Songbirds in Subantarctic Forests in Southern Chile'.
Thumbnail image of item number 4 in: 'Identifying Native and Exotic Predators of Ground-Nesting Songbirds in Subantarctic Forests in Southern Chile'.

PDF Version Also Available for Download.

Citations, Rights, Re-Use

International Image Interoperability Framework

IIF Logo

We support the IIIF Presentation API

Links for Robots

Helpful links in machine-readable formats.

Archival Resource Key (ARK)

International Image Interoperability Framework (IIIF)

Metadata Formats

Images

URLs

Stats

Maley, Brett M.; Anderson, Christopher B.; Stodola, Kirk & Rosemond, Amy D. Identifying Native and Exotic Predators of Ground-Nesting Songbirds in Subantarctic Forests in Southern Chile, article, April 28, 2011; Punta Arenas, Chile. (https://digital.library.unt.edu/ark:/67531/metadc1181154/: accessed June 8, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT College of Arts and Sciences.

Back to Top of Screen