VII.8 The Ecology, Economics, and Management of Alien Invasive Species

2009 ◽  
pp. 731-739 ◽  
Keyword(s):  
Invasive Species ◽  
Alien Invasive Species

scholarly journals Demographics of Eucalyptus grandis and implications for invasion

Koedoe ◽  
2017 ◽  
Vol 59 (1) ◽  
Author(s):  
Kudakwashe Musengi ◽  
Sally Archibald
Keyword(s):  
Invasive Species ◽  
Eucalyptus Grandis ◽  
Reproductive Traits ◽  
Alien Invasive Species ◽  
Rate Of Spread ◽  
Invasion Stage ◽  
The Future ◽  
Plantation Species ◽  
Negative Impacts ◽  
Almost All

Alien invasive species can have negative impacts on the functioning of ecosystems. Plantation species such as pines have become serious invaders in many parts of the world, but eucalypts have not been nearly as successful invaders. This is surprising considering that in their native habitat they dominate almost all vegetation types. Available theory on the qualities that characterise invasive species was used to assess the invasive potential of Eucalyptus grandis – a common plantation species globally. To determine rates of establishment of E. grandis outside plantations, we compared population demographics and reproductive traits at two locations in Mpumalanga, South Africa: one at higher elevation with more frost. Eucalyptus grandis has a short generation time. We found no evidence that establishment of E. grandis was limiting its spread into native grassland vegetation, but it does appear that recruitment is limited by frost and fire over much of its range in Mpumalanga. Populations at both study locations displayed characteristics of good recruitment. Size class distributions showed definite bottlenecks to recruitment which were more severe when exposed to frost at higher elevations. Generally, the rate of spread is low suggesting that the populations are on the establishing populations’ invasion stage. This research gives no indication that there are any factors that would prevent eucalyptus from becoming invasive in the future, and the projected increase in winter temperatures should be a cause for concern as frost is currently probably slowing recruitment of E. grandis across much of its planted range.Conservation implications: Eucalyptus plantations occur within indigenous grasslands that are of high conservation value. Frost and fire can slow recruitment where they occur, but there are no obvious factors that would prevent E. grandis from becoming invasive in the future, and monitoring of its rates of spread is recommended.

scholarly journals Introducing the Global Register of Introduced and Invasive Species: challenges with classification

2018 ◽  
Vol 2 ◽  
pp. e25306
Author(s):  
Shyama Pagad
Keyword(s):  
Invasive Species ◽  
Alien Species ◽  
Alien Invasive Species ◽  
Validation And Verification ◽  
The World ◽  
Invasive Status

The Global Register of Introduced and Invasive Species (GRIIS) presents annotated country checklists of introduced and invasive species. Annotations include higher taxonomy of the species, synonyms, environment/system in which the species occurs, and its biological status in that country. Invasiveness is classified by evidenced impact in that country. Draft country checklists are subjected to a process of validation and verification by networks of country experts. Challenges encountered across the world include confusion with alien/invasive species terminology, classification of the ‘invasive’ status of an alien species and issues with taxonomic synonyms.

Alien Invasive Elements of Upper Ganga Ramsar Site, Uttar Pradesh, India

2015 ◽  
Vol 38 (4) ◽  
pp. 383-386
Author(s):  
Arti Garg ◽  
Vineet Singh
Keyword(s):  
Invasive Species ◽  
Invasive Alien Species ◽  
Uttar Pradesh ◽  
Habitat Conservation ◽  
Alien Invasive Species ◽  
Indigenous Species ◽  
Ramsar Site ◽  
Wetland Ecosystem ◽  
Wetland Biodiversity ◽  
The Family

Invasive alien species of Upper Ganga Ramsar Site in Uttar Pradesh and their impact on the wetland ecosystem is discussed. In all 69 alien invasive species under 58 genera and 32 families were recorded of which there were 55 herbs, 5 climbers/twiners, 5 shrubs, 2 undershrubs and 2 tree species. The alien invasives of American origin dominated while the family Asteraceae showed maximum representation. It is inferred that stringent measures need to be adopted for combating the spread of alien invasives in order to conserve the wetland biodiversity and loss of indigenous species for habitat conservation.

scholarly journals Colaphellus palaestinus Achard, a new leaf-beetle for Europe (Coleoptera, Chrysomelidae, Chrysomelinae)

Zootaxa ◽  
2019 ◽  
Vol 4565 (3) ◽  
pp. 447
Author(s):  
DAVID MIFSUD ◽  
MAURO DACCORDI
Keyword(s):  
Social Media ◽  
Invasive Species ◽  
Related Species ◽  
Leaf Beetle ◽  
Global Distribution ◽  
Alien Invasive Species ◽  
Local News ◽  
Closely Related Species ◽  
First Time

Colaphellus palaestinus Achard, an alien invasive species is here reported for the first time for Europe. It was found for the first time in Malta in November 2017, and the year after thousands of individuals were observed in Malta with many photographs posted in social media and local news. Global distribution of this species and information on closely related species is also provided here. Colaphellus zarudnyi Medvedev is probably a synonym of C. palaestinus. 

Emerging Aquatic Alien Invasive Species: Trends and Challenges for Mexican Fisheries in the Extended Gulf of Mexico Basin

2019 ◽  
pp. 195-217
Author(s):  
César Meiners-Mandujano ◽  
Roberto González-Gómez ◽  
Lourdes Jiménez-Badillo ◽  
Gabriela Galindo-Cortes ◽  
Piedad S. Morillo-Velarde
Keyword(s):  
Invasive Species ◽  
Gulf Of Mexico ◽  
Alien Invasive Species ◽  
Gulf Of Mexico Basin ◽  
Mexico Basin

scholarly journals Managing alien bird species: Time to move beyond “100 of the worst” lists?

2015 ◽  
Vol 26 (2) ◽  
pp. 154-163 ◽  
Author(s):  
SABRINA KUMSCHICK ◽  
TIM M. BLACKBURN ◽  
DAVID M. RICHARDSON
Keyword(s):  
Invasive Species ◽  
Alien Species ◽  
Expert Opinion ◽  
Bird Species ◽  
Alien Invasive Species ◽  
Common Myna ◽  
Acridotheres Tristis ◽  
Pycnonotus Cafer ◽  
Selection Of Species ◽  
The Impact

SummaryAlien species can cause severe impacts in their introduced ranges and management is challenging due to the large number of such species and the diverse nature and context of their impacts. Lists of the most harmful species, like the “100 of the World’s Worst” list collated by the Invasive Species Specialist Group of the International Union for Conservation of Nature (IUCN) or the “100 of the Worst” invaders in Europe collated by the Delivering Alien Invasive Species Inventories in Europe (DAISIE) project, raise awareness about these impacts among the public, and can guide management decisions. Such lists are mainly based on expert opinion, but in recent years a more objective comparison of impacts has become possible, even between highly diverse taxa. In this study, we use a semi-quantitative generic impact scoring system to assess impacts of the three birds listed among the “100 of the World’s Worst” IUCN list (IUCN100) and the four birds on the list of “100 of the Worst” European invaders by DAISIE (DAISIE100) and to compare their impacts with those of other alien birds not present on the respective lists. We found that generally, both lists include some of the species with the highest impacts in the respective regions (global or Europe), and these species therefore deserve the dubious honour of being listed among the “worst”. However, there are broad overlaps between some species with regards to the impact mechanisms and the related issues of invasions, especially those of the Common Myna Acridotheres tristis and Red-vented Bulbul Pycnonotus cafer on the IUCN100, are very similar which might not warrant listing both species. To make the selection of species on such lists more transparent we suggest moving beyond lists based on expert opinion to a more transparent and defendable system for listing alien species based on published records of their impacts and related mechanisms.

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