Do Invasive Species Provide a Refuge from Browsers?: A Test of Associational Resistance in a Peri-Urban Habitat Plagued by Deer

2021 ◽  
Author(s):  
Tiffany Betras ◽  
Esmée DeCortie ◽  
Ali Carroll ◽  
Ryan Utz ◽  
Walter P. Carson
Keyword(s):  
Invasive Species ◽  
Urban Habitat ◽  
Associational Resistance

scholarly journals Distribution patterns of invasive Monk parakeets (Myiopsitta monachus) in an urban habitat

2012 ◽  
Vol 35 (1) ◽  
pp. 107-117
Author(s):  
R. Rodríguez–Pastor ◽  
◽  
J. C. Senar ◽  
A. Ortega ◽  
J. Faus ◽  
...  
Keyword(s):  
Invasive Species ◽  
Distribution Patterns ◽  
Food Sources ◽  
Urban Habitat ◽  
Urban Habitats ◽  
Monk Parakeet ◽  
Landscape Characteristics ◽  
Myiopsitta Monachus ◽  
Preferred Habitat ◽  
Marked Preference

Several invasive species have been shown to have a marked preference for urban habitats. The study of the variables responsible for the distribution of these species within urban habitats should allow to predict which environmental variables are indicative of preferred habitat, and to design landscape characteristics that make these areas less conducive to these species. The Monk parakeet Myiopsitta monachus is an invasive species in many American and European countries, and cities are one of its most usual habitats in invaded areas. The aim of this paper was to identify the main factors that determine distribution of the Monk parakeet in Barcelona, one of the cities in the world with the highest parakeet density. We defined our model based on eight preselected variables using a generalized linear model (GLZ) and evaluated the strength of support for each model using the AIC–based multi–model inference approach. We used parakeet density as a dependent variable, and an analysis restricted to occupied neighbourhoods provided a model with two key variables to explain the distribution of the species. Monk parakeets were more abundant in neighbourhoods with a high density of trees and a high percentage of people over 65 years. This is interpreted by the fact that parakeets use trees as food sources and support for the nests, and that older people often feed the species. Data support the ‘human–activity’ hypothesis to explain how invasive species can successfully establish in a non–native habitat, and stress how limiting food resources, especially food supplied by humans, may be the easiest way to exert some control on Monk parakeet populations.

scholarly journals Sex and Age Effects on Monk Parakeet Home-Range Variation in the Urban Habitat

Diversity ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 648
Author(s):  
Juan Carlos Senar ◽  
Aura Moyà ◽  
Jorge Pujol ◽  
Xavier Tomas ◽  
Ben J. Hatchwell
Keyword(s):  
Invasive Species ◽  
Home Range ◽  
Home Range Size ◽  
Range Size ◽  
Good News ◽  
Urban Habitat ◽  
Monk Parakeet ◽  
Myiopsitta Monachus ◽  
Small Home Range ◽  
Range Variation

Home-range size is a key aspect of space-use, and variation in home-range size and structure may have profound consequences for the potential impact of damage and control strategies for invasive species. However, knowledge on home-range structure of naturalized parrot species is very limited. The aim of this study was to quantify patterns of home-range variation according to sex and age of the monk parakeet Myiopsitta monachus, an invasive parakeet in Europe. Mean kernel home-range size was 12.4 ± 1.22 ha (range 1.7–74.1 ha; N = 73 birds). Juveniles had a larger home-range size than adults, but sexes did not differ in kernel home-range size. The mean maximum distance moved by monk parakeets was 727 ± 37.0 m (range: 150–1581 m), and it was not dependent on either the sex or age of the birds. Having a small home range is one of the conditions for the feasible eradication of an invasive species; hence, the small home range of urban monk parakeets that we report here is good news for pest managers. However, this small home-range size can limit the effectiveness of culling operations with traps or feeders with contraceptives or poison, and other alternatives, such as funnel nets or traps, should be used.

Invasive Shot Hole Borers Euwallacea fornicatus, E. kuroshio, and E. perbrevis (Coleoptera: Curculionidae: Scolytinae)

EDIS ◽  
2020 ◽  
Vol 2020 (1) ◽  
pp. 7
Author(s):  
Demian F. Gomez ◽  
Jiri Hulcr ◽  
Daniel Carrillo
Keyword(s):  
South Africa ◽  
Invasive Species ◽  
Prevention And Control ◽  
Economic Impacts ◽  
Forest Resources ◽  
Economic Damage ◽  
Ambrosia Beetles ◽  
Invasive Insects ◽  
The World ◽  
And Control

Invasive species, those that are nonnative and cause economic damage, are one of the main threats to ecosystems around the world. Ambrosia beetles are some of the most common invasive insects. Currently, severe economic impacts have been increasingly reported for all the invasive shot hole borers in South Africa, California, Israel, and throughout Asia. This 7-page fact sheet written by Demian F. Gomez, Jiri Hulcr, and Daniel Carrillo and published by the School of Forest Resources and Conservation describes shot hole borers and their biology and hosts and lists some strategies for prevention and control of these pests. http://edis.ifas.ufl.edu/fr422

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