scholarly journals Distribution of alien invasive species in aquatic ecosystems of the southern Western Ghats, India

2021 ◽  
Vol 24 (2) ◽  
pp. 64-75
Author(s):  
Smrithy Raj ◽  
Pranav Prakash ◽  
Rajesh Reghunath ◽  
Josin C. Tharian ◽  
Rajeev Raghavan ◽  
...  
Keyword(s):  
Invasive Species ◽  
Alien Species ◽  
Western Ghats ◽  
Poecilia Reticulata ◽  
Clarias Gariepinus ◽  
Oreochromis Mossambicus ◽  
Geographical Information ◽  
Pistia Stratiotes ◽  
Alien Invasive Species ◽  
The Western Ghats

Abstract We present results of the first major attempt to record the distribution of aquatic alien species in the Western Ghats Biodiversity Hotspot using Geographical Information System. A total of 32 alien species, including four macrophytes (Salvinia molesta, Pistia stratiotes, Eichhornia crassipes and Cabomba furcata) and 28 fish were recorded from the southern part of the Western Ghats. Seven of these have established natural populations and are invasive, which includes Oreochromis mossambicus, O. niloticus (Cichlidae), Poecilia reticulata, Gambusia affinis (Poeciliidae), Pterygoplichthys pardalis (Loricariidae), Cyprinus carpio (Cyprinidae) and Clarias gariepinus (Clariidae). Oreochromis mossambicus is the most extensively distributed invasive fish in the region. Major reservoirs serve as a spawning hub for species such as C. gariepinus and C. carpio. Significant pathways for the establishment of most alien species in Western Ghats were aquarium trade and aquaculture. Given the increasing records of alien species and proliferation of invasive species in the southern region of the Western Ghats, urgent research and policy interventions are suggested, including the development of a comprehensive database on distribution, trade, invasion biology, as well as determining both short-term and longterm impacts on endemic fauna.

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.

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.

Alien invasive species at the Romanian Black Sea coast - Present and perspectives

2010 ◽  
Vol 53 (1) ◽  
pp. 443-467 ◽  
Author(s):  
Marius Skolka ◽  
Cristina Preda
Keyword(s):  
Invasive Species ◽  
Alien Species ◽  
Black Sea ◽  
Alien Invasive Species ◽  
Aquatic Animal ◽  
Freshwater Species ◽  
Field Observations ◽  
Native Communities ◽  
Black Sea Coast ◽  
Sea Coast

Alien invasive species at the Romanian Black Sea coast - Present and perspectives Using literature data and personal field observations we present an overview of aquatic animal alien invasive species at the Romanian Black Sea coast, including freshwater species encountered in this area. We discuss records, pathways of introduction, origin and impact on native communities for some of these alien invasive species. In perspective, we draw attention on the potential of other alien species to become invasive in the study area.

scholarly journals Marine alien species as an aspect of global change

2010 ◽  
Vol 1 (1) ◽  
pp. 199 ◽  
Author(s):  
Anna Occhipinti-Ambrogi ◽  
Bella Galil
Keyword(s):  
Climate Change ◽  
Invasive Species ◽  
Global Change ◽  
Alien Species ◽  
Native Species ◽  
Alien Invasive Species ◽  
Climate Projections ◽  
Starting Point ◽  
Daunting Task ◽  
The Mediterranean

The transport of organisms across oceans is an anthropogenic agent of global change that has profoundly affected the natural distribution of littoral biota and altered the makeup of biogeographic regions. The homogenization of marine biotas is a phenomenon especially affecting coastal regions and is spearheaded by a suite of opportunistic species at the expense of native species. Climate change may exacerbate the trend: sea surface temperatures, hydrodynamics, pH and carbonate cycles, already show marked fluctuations compared to the past. Alien invasive species are impacted by the change of marine climate in a variety of ways, which are we have just begun to notice, observe and interpret. A conceptual framework has yet to be conceived that links theories on biological introductions and invasions with the physical aspects of global change. Therefore predicting the scale of invasions or their impact on biodiversity is a daunting task. Integration of biological and environmental information systems, niche models, and climate projections would improve management of aquatic ecosystems under the dual threats of biotic invasions and climate change. The recorded spread of alien species and analysis of patterns of invasions may serve as the starting point for searching connections with climate change descriptors. The Mediterranean Sea is home to an exceptionally large number of alien species, resulting from its exceptional history and multiple vectors. For much of the twentieth century alien thermophilic species, which had entered the Mediterranean through the Suez Canal, have been confined to the Levantine Basin. In recent years climate driven hydrographic changes have coincided with a pronounced expansion of alien thermophilic biota to the central and western basins of the Mediterranean. We discuss some changes in emergent functions and services in Mediterranean ecosystems under the combined effect of invasive species and climate changes.

scholarly journals Are Introduced Alien Species More Predisposed to Invasion in Recipient Environments If They Provide a Wider Range of Services to Humans?

Diversity ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 553
Author(s):  
Kowiyou Yessoufou ◽  
Annie Estelle Ambani
Keyword(s):  
South Africa ◽  
Invasive Species ◽  
Alien Species ◽  
Propagule Pressure ◽  
Phylogenetic Signal ◽  
Dna Barcode ◽  
Alien Plants ◽  
Invasion Success ◽  
Alien Invasive Species ◽  
Unexpected Finding

The drivers of invasion success of alien species remain, to some extent, a matter of debate. Here, we suggest that the services (the benefits humans obtain from a species) provided by alien plants could predict their invasion status, such that alien species providing more services would be more likely to be invasive than not. The rationale for this expectation is that alien species providing multiple services stand a better chance of being introduced in various numbers and multiple times outside their native range (propagule pressure theory). We investigated this hypothesis on alien woody species in South Africa. First, we defined 12 services provided by all the 210 known naturalized alien woody plants in South Africa. Then, we tested for a phylogenetic signal in these services using a DNA barcode-based phylogeny. Finally, we tested for potential links between the services and invasion status by fitting GLM models with appropriate error families. We found a phylogenetic signal in most services, suggesting that closely related species tend to provide similar services. Counter-intuitively, we consistently found that alien non-invasive species tend to provide more services, or even unique services, in comparison to alien invasive species. Although alternative scenarios are plausible to explain this unexpected finding, we speculate that harvesting alien plants for human benefits may limit their invasion ability. This warrants further investigation.

Heterocentron subtriplinervium (Melastomataceae) – the first report of naturalisation of a potential invasive alien species in Asia from India

2020 ◽  
Vol 62 (1-2) ◽  
pp. 1-6
Author(s):  
A. P. Balan ◽  
A. J. Rubi ◽  
R. Prakashkumar
Keyword(s):  
Alien Species ◽  
Western Ghats ◽  
Invasive Alien Species ◽  
First Report ◽  
Western Ghats Of India ◽  
First Time ◽  
The Western Ghats

Heterocentron subtriplinervium (Link et Otto) A. Braun et C. D. Bouche, a potential invasive alien species is reported here for the first time for Asia from the Western Ghats of India. The plant is probably introduced deliberately into gardens for ornamental purpose from where it escaped and become naturalised in the Western Ghats. This species is a potential weed, which quickly conquers areas wherever introduced displacing the indigenous flora. A detailed description, illustration, photograph and relevant notes are provided for easy identification in the field.

Ochrona gatunków rodzimych przed inwazjami biologicznymi

2019 ◽  
Vol 78 ◽  
pp. 348-358
Author(s):  
Emilia Nawrotek
Keyword(s):  
Invasive Species ◽  
Alien Species ◽  
Native Species ◽  
Invasive Alien Species ◽  
Well Being ◽  
Legal Regulation ◽  
Alien Invasive Species ◽  
Agricultural Systems ◽  
Health And Economic Development ◽  
Economic Well Being

Invasive alien species are a threat to biodiversity and food security, health and economic development. These species are causing enormous damage to biodiversity and the valuable natural agricultural systems upon which we depend. Globalisation, trade, travel, and transport of goods across borders they have facilitated the spread of invasive alien species. The spread of invasive alien species is now recognised as one of the greatest threats to the ecological and economic well being of the planet. The aim of the article is to analyze and attempt to assess the legal regulation relating protection native species against alien invasive species and alien species.

scholarly journals A novel alien invasive species introduction, Clerodendrum paniculatum Linn (Pagoda) Lamiaceae, in a tropical African forest

2021 ◽  
Author(s):  
Omomoh Eromosele Bernard ◽  
Leah Brown ◽  
Karst Meiger ◽  
Victor A. J. Adekunle ◽  
Ganiyu Oboh
Keyword(s):  
Invasive Species ◽  
Alien Species ◽  
Novel Species ◽  
Alien Invasive Species ◽  
The Novel ◽  
Species Introduction

Abstract We record a novel introduction of Clerodendrum paniculatum in Africa. The novel species appears to have a negligible impact within the new environment. In this communication, we describe the novel alien species and the environment to which it has been introduced.

Invasive species issues in Canada - How can ecology help?

2007 ◽  
Vol 87 (5) ◽  
pp. 989-992 ◽  
Author(s):  
D. R. Clements ◽  
P. M. Catling
Keyword(s):  
Invasive Species ◽  
Alien Species ◽  
Invasive Plants ◽  
Invasive Plant ◽  
Biological Diversity ◽  
Invasive Alien Species ◽  
Alien Invasive Species ◽  
Convention On Biological Diversity ◽  
Ecological Knowledge ◽  
Terrestrial Plants

The field of invasive species biology has been growing rapidly in the past decade, spurred on by the US Executive Order on invasive species in 1999. Despite calls to deal with invasive alien species under the International Convention on Biological Diversity in 1992, Canada has been slow to act. Part of the difficulty in managing alien invasive species effectively lies in the lack of ecological knowledge. The Canadian strategy on invasive alien terrestrial plants developed recently by the Canadian Food Inspection Agency sees research as a critical component of the strategy, including study of the biology and ecology of invasive plants. A symposium on ecology and invasive plant species at the Plant Canada meeting in 2007 in Saskatoon served to explore some emerging research in Canada, particularly focusing on Canada’s prairie region. Papers derived from five of the presentations are presented here and illustrate well the continuing challenge of applying ecological principles to the complex issues surrounding invasive plants. Canadian ecologists have made a significant contribution, but much remains to be done along the lines of the simple studies provided in this symposium. Key words: Invasive alien species, prairie region, biodiversity, ecological research

scholarly journals Floristic Inventory of Invasive Alien Aquatic Plants Found in Some Congolese Rivers, Kinshasa, Democratic Republic of the Congo

2020 ◽  
pp. 1-15
Author(s):  
Henri Kunzi Mbale ◽  
Michael Tshibangu Mukendi ◽  
Gédéon Ngiala Bongo ◽  
Anthony Batoba Kikufi ◽  
Félicien Luyeye Lukoki
Keyword(s):  
Invasive Species ◽  
Alien Species ◽  
Democratic Republic ◽  
Invasive Alien Species ◽  
Pistia Stratiotes ◽  
Chemical Characteristics ◽  
Congo River ◽  
Physico Chemical ◽  
Significant Difference ◽  
Republic Of The Congo

Aim: To identify invasive aquatic alien plant species found in the Pool Malebo and some rivers in Kinshasa city, their behavior as well as their socio-economic impacts. Study Design: The study used a combination of purposive sampling and simple random sampling in order to select different sites where samples were collected. Place and Duration of Study: This study was carried out in different rivers (Pool Malebo system (Kinkole, Kingabwa), and N'sele, Funa and Lukaya rivers) of Kinshasa city in Democratic Republic of the Congo. The Pool Malebo is located along the Congo River. This was conducted between March and October 2013. Methodology: The collection was performed after a direct observation. The location of collection depended on sites, at Kingabwa and Kinkole, we collected invasive species in the middle of the Congo river and to achieve that, we used canoe. While at N’sele, Lukaya and Funa rivers, samples were collected at the edges. The collection took place in the morning between 7 and 11 am. Recorded species were classified either alien species or invasive alien species according to the status in the study region. The identification of collected species was carried out according to APG III. Seeing the way these species invade the environment and how they disturb the ecology of rivers, the physico-chemical characteristics of waters were measured between 7:00 and 11:00 am with the appropriate electronic probe for each parameter. For each parameter, the comparison between the sites was carried out using the ANOVA test with XLSTAT 2013 software. Results: Out of 151 specimens collected, 35 species have been identified of which 19 species as alien were identified and 4 proved to be invasive alien species, namely: Eichhornia crassipes, Echinochloa pyramidalis, Ludwigia peploides and Pistia stratiotes. These invasive species are used by farmers as livestock feed and also as green manure for different agricultural and farming activities, As to the physico-chemical characteristics, no significant differences were observed for the temperature and the turbidity in various sites while the pH and conductivity, there was a highly significant difference between different sites. The hydrology of these rivers is seriously disturbed due to the presence of these invasive alien species. These species constitute a serious threat in the erosion of aquatic biodiversity in the removal of native species in the formation of floating monospecific dense mats as observed. Conclusion: The invasion of alien species is a consequence of human activities and a concern, which affects all sectors of the society. It constitutes a true challenge for ecologists, economists, social scientists, agricultural engineers, environmentalists and other in order to develop and implement strong risk analysis frameworks and environmental impact assessments.

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