scholarly journals Invasive species compendium.

Author(s):  
Julissa Rojas-Sandoval

Abstract Agave fourcroydes is a perennial succulent plant that has been extensively cultivated for fibre production (sisal) and as an ornamental. This species is adapted to a wide variety of habitats and spreads easily by bulbils and offshoots from rhizomes. These traits are thought to help the species escape cultivation and easily colonize and become naturalized in new habitats. It is currently listed as invasive in Spain, the Canary Islands and Cuba, where it is described as a species that is spreading, and often forms dense monospecific stands that displace native vegetation.

2008 ◽  
Vol 70 (2) ◽  
pp. 141-148 ◽  
Author(s):  
Juan Carlos Rando ◽  
Josep Antoni Alcover ◽  
Juan Francisco Navarro ◽  
Francisco García-Talavera ◽  
Rainer Hutterer ◽  
...  

AbstractUnderstanding late Holocene extinctions on islands requires accurate chronologies for all relevant events, including multiple colonisations by humans and the introduction of alien species. The most widely held hypothesis on the causes of Holocene island vertebrate extinctions incorporates human impacts, although climatic-related hypotheses cannot be excluded. Both hypotheses have been suggested to account for the extinction of the endemic Lava Mouse,Malpaisomys insularisfrom the Canary Islands. Here we present the first accelerator mass spectrometer (AMS)14C ages from collagen ofM. insularisbones from ancient owl pellets collected at Fuerteventura (Canary Islands, eastern Atlantic Ocean). These new dates contribute to an understanding of the extinction of this species. We are able to exclude climatic causes, predation by invasive species, and competition with the house mouse,Mus musculus. The arrival of Europeans in the Canary Islands correlates with the extinction ofMalpaisomys. The introduction of rats,Rattusspp., together with their parasites and diseases, emerges as the most reasonable hypothesis explaining the extinction ofM. insularis.


2020 ◽  
Author(s):  
Julissa Rojas-Sandoval

Abstract Cascabela thevetia is a fast-growing woody species native to tropical North and South America that has been extensively introduced as an ornamental. It behaves as an aggressive weed that grows to form large and dense thickets, especially in low-lying areas and along watercourses, that displace native vegetation and alter successional processes. In addition, all parts of the plant are extremely toxic and can be fatal to humans and other animals if consumed. Currently, it is included in the Global Invasive Species Database and has been listed as invasive and as a noxious weed in East Timor, South Africa, Kenya, Tanzania, Uganda, Australia, Anguilla, Cuba, Hawaii, French Polynesia, Fiji and other islands in the Pacific region.


2019 ◽  
Vol 152 (3) ◽  
pp. 470-498 ◽  
Author(s):  
Filip Verloove ◽  
Joachim Thiede ◽  
Águedo Marrero Rodríguez ◽  
Marcos Salas-Pascual ◽  
Jorge Alfredo Reyes-Betancort ◽  
...  

Background – Species of Agave and Furcraea (Agavaceae, Asparagaceae s. lat.) are widely cultivated as ornamentals in Mediterranean climates. An increasing number is escaping and naturalising, also in natural habitats in the Canary Islands (Spain). However, a detailed treatment of variously naturalised and invasive species found in the wild in the Canary Islands is not available and, as a result, species identification is often problematic.Methods – The present study is based on many years of fieldwork on the islands of Fuerteventura, Gran Canaria, Lanzarote and Tenerife. Results – Fourteen species and several additional infraspecific taxa of Agave have been identified. In addition to the widely naturalised and invasive Agave americana, A. fourcroydes and A. sisalana (incl. the not previously reported var. armata), the following species of Agave were observed: A. angustifolia (incl. var. marginata), A. attenuata, A. filifera, A. franzosinii, A. lechuguilla, A. macroacantha, A. murpheyi, A. oteroi, A. salmiana (var. ferox and var. salmiana), A. aff. tequilana and A. vivipara. From the genus Furcraea three species were found: F. foetida, F. hexapetala and F. selloana. Several of these newly detected species of Agave and Furcraea are at least locally naturalised. A key for the identification of the representatives of these genera in the study area is presented and all species are illustrated. Additional nomenclatural, taxonomic and ecological notes are also provided.


2014 ◽  
Vol 78 (1) ◽  
pp. 50-61
Author(s):  
Stephan Scholz ◽  
Hans Grasmück

Oasis Park Fuerteventura is a big amusement park with a zoological and a botanical garden.The latter is described here. In this garden, plants of the Canary Islands are cultivated, including rare endemic species. Plants of different ecosystems like succulent scrub and thermophilous forest are displayed.The garden also hosts many other plants, including tropical tree and shrub species and many different palms, as well as a large succulent plant assemblage with cacti, succulent plants from Madagascar, aloes, yuccas and agaves.


2021 ◽  
Author(s):  
André Gassmann ◽  
Chris Parker

Abstract L. vulgaris is a perennial flowering plant with a spreading root system. It forms dense mats which can compete with crops and suppress native vegetation, reducing pasture productivity and/or biodiversity (ISSG, 2015). Native to temperate areas of Europe and Asia, it has been widely introduced to North America, Australia, New Zealand and South Africa, and is regarded as noxious in many of these countries. By inclusion in indexes of invasive species it is regarded as invasive widely in Canada and in the USA (Alberta Invasive Species Council, 2014; Invasive Plant Atlas of the United States, 2015). L. vulgaris received an invasive index of 69 (out of a maximum of 100) in Alaska, USA (ANHP, 2011). It is also regarded as invasive within its native range in Serbia (Dzigurski and Nikolic, 2014).


2021 ◽  
Author(s):  
Ian Popay ◽  
Chris Parker

Abstract S. canadensis is an erect rhizomatous perennial plant native to North America which has spread throughout a number of European countries after its introduction as an ornamental. Moron et al. (2009) say that this species and the closely related species, S. gigantea have been among the most successful invasive species in Europe. It continues to be available from mail-order catalogues and websites of commercial nurseries and botanical gardens and as such further introduction of this species are likely. It is an undesirable invader on account of its large rhizomes, vigorous growth and allelopathic effects which lead to gross changes in the native vegetation and fauna. It is easily controlled by cultivation but difficult to control in natural areas due to its long persistence.


Oryx ◽  
2018 ◽  
Vol 53 (4) ◽  
pp. 782-786 ◽  
Author(s):  
Félix M. Medina ◽  
Marta López-Darias ◽  
Julien C. Piquet

AbstractDespite efforts to combat invasive species, further measures are still required to prevent their arrival and translocation, especially into biodiverse island ecosystems. Although many governments worldwide have already established protocols to control alien species, the European outermost regions have yet to implement fully effective prevention or rapid response procedures. The numerous translocations of the invasive Barbary ground squirrel Atlantoxerus getulus within the Canary Islands illustrate this problem. From 1996 to 2016 at least 2.1 individuals per year have been moved from Fuerteventura to other islands. If movements of these medium-sized vertebrates are taking place regularly, the number of smaller species transported within the archipelago could potentially be greater. We argue that it is essential to implement stricter strategies for invasive species control in these remote biodiversity-rich islands, including early detection and rapid response, to minimize impacts on native biodiversity.


Check List ◽  
2017 ◽  
Vol 13 (1) ◽  
pp. 2051 ◽  
Author(s):  
Azad Teimori ◽  
Mina Motamedi ◽  
Majid Askari Hesni

A new geographical distribution record of the invasive species of Redbelly Tilapia, Coptodon zillii, is reported here from a drainage in southern Iran, based on the discovery of a population at Howba spring. The locality of the new record is now completely dominated by this exotic fish; this location was previously inhabited by native fishes. As tilapia species have a high resilience to harsh environmental conditions, they can easily be translocated to, and establish in, new habitats. Thus, ecological monitoring of this exotic fish species is highly recommended.


2021 ◽  
Author(s):  
Julissa Rojas-Sandoval ◽  
Pedro Acevedo-Rodríguez

Abstract G. physocarpus is a shrub, widely naturalized in tropical, subtropical and semiarid ecosystems. It commonly grows as a weed in waste places, disturbed sites, open woodlands, grasslands, wetlands, and along roadsides and it is also planted as an ornamental in gardens, yards and parks (Wagner et al., 1999; Motooka et al., 2003; Queensland Department of Primary Industries and Fisheries, 2011). In Hawaii and Australia, this species has been recorded invading active pastures and sugarcane plantations as well as coastal and dry forests (Motooka et al., 2003; Queensland Department of Primary Industries and Fisheries, 2011). Features such as high drought tolerance, fast-growing, weedy behaviour, and wind-dispersed seeds are factors facilitating the invasion of this species into new habitats. In addition, each plant produces large numbers of small seeds which are successfully dispersed by wind aided by the tuft of silky hairs attached to each seed (Notten, 2010). Currently, G. physocarpus is listed as invasive in Hawaii, French Polynesia, the Canary Islands, New Caledonia, China and Australia and as potentially invasive in Cuba, Jamaica, India and Italy (Oviedo Prieto et al., 2012; DAISIE, 2014; PIER, 2014; USDA-ARS, 2014).


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