Invasive Alien Species

Order of the National Green Tribunal regarding deterioration of Nayar river, Uttarakhand, 05/06/2025

Order of the National Green Tribunal in the matter of In Re: News Item titled "Nayar river is vanishing - a yatra reveals conservation goes beyond science and policy" appearing in ‘The Down To Earth’ dated 03.06.2025. The original application was registered suo-motu based on the news item titled "Nayar …

Freshwater biodiversity in the Lake Victoria Basin

The Lake Victoria Basin is internationally recognised for its high freshwater species diversity and endemism, which are of critical importance to local livelihoods and national economies within the basin. However, freshwater ecosystems within the region are highly threatened, with current safeguards proving inadequate and the focus of much past and …

State of the world’s birds 2018

One in eight bird species is threatened with global extinction, but atleast twenty-five bird species have been brought back from the brink of extinction so far this century finds this new study of global bird populations by Birdlife International The State of the World’s Birds, a five-year compendium of population …

A globally-distributed alien invasive species poses risks to United States imperiled species

In the midst of Earth’s sixth mass extinction event, non-native species are a driving factor in many imperiled species’ declines. One of the most widespread and destructive alien invasive species in the world, wild pigs (Sus scrofa) threaten native species through predation, habitat destruction, competition, and disease transmission. We show …

Summary for policymakers of the regional assessment of biodiversity and ecosystem services for Asia and the Pacific

The Asia-Pacific regional assessment focuses on the critical importance of nature’s contribution to people and people’s well-being. The assessment aims to assist in the development and implementation of cross-scale and cross-sector policies, as well as institutional and governance-related interventions. It also identifies and proposes practical management options, methodologies, tools and …

Coral-killing sponge Terpios hoshinota invades the corals of Gulf of Mannar, Southeast India

Terpios hoshinota is an encrusting cyanobacteriosponge which grows aggressively over live coral colonies and has been reported to undergo outbreaks which kill corals. In an underwater survey conducted on the reefs of Gulf of Mannar, an outbreak of this coral-invading sponge was witnessed for the first time. Original Source

Vermicomposting and anaerobic digestion – viable alternative options for terrestrial weed management – A review

The management of terrestrial weed is of great concern for the scientific community as these weeds cause adverse effect in different ecosystems like forest, agriculture and urban. The widespread of these weeds by their adaptive capability and morphological advancement is difficult to control. Parthenium hysterophorous, Lantana camara, Saccharum spontaneum, Ageratum …

Scientists call for action to tackle the threat of invasive tree species to a global biodiversity hotspot

An invasive Australian tree is now posing a serious threat to a global diversity ‘hotspot’ according to new collaborative research between Landcare Research in New Zealand, the Universities of Cambridge (UK) Denver (US) and Bangor University (UK). This species, Pittosporum undulatum, known locally as mock orange, was introduced to a …

Endemic trees in a tropical biodiversity hotspot imperilled by an invasive tree

Non-native plants invade some tropical forests but there are few long-term studies of these invasions, and the consequences for plant richness and diversity are unclear. Repeated measurements of permanent plots in tropical montane rain forests in the Blue and John Crow Mountains National Park in Jamaica over 24 to 40 …

Kenya biodiversity threatened by Cuscuta weed: scientists

NAIROBI (Xinhua) -- Scientists from a global invasive species organization on Friday warned a parasitic invasive weed known as Cuscuta is threatening the survival of crops and biodiversity in western Kenya. Arne Witt, coordinator of Invasive Species at the UK-based Center for Agriculture and Biosciences International (CABI), noted that the …

Invasive plants hurt wildlife, ecosystem

A new research shows that invasive alien plant species introduced as ornamental plants at tourism facilities are spreading rapidly throughout the Serengeti-Mara ecosystem, posing a major threat to plant and animal species. Scientists from the Centre of Agriculture and Bioscience International, Centre for Invasion Biology at the University of Stellenbosch …

Northern range expansion of the Asian tiger mosquito (Aedes albopictus): Analysis of mosquito data from Connecticut, US

The Asian tiger mosquito (Aedes albopictus) is an invasive species and important arbovirus vector that was introduced into the U.S. in the 1980's where it continues to expand its range. Winter temperature is an important constraint to its northward expansion, with potential range limits located between the 0° and -5°C …

State of the World’s Plants 2017

The spread of pests and pathogens that damage plant life could cost global agriculture $540 billion a year, according to this report released by the Royal Botanic Gardens in London. An increase in international trade and travel had left flora facing rising threats from invasive pests and pathogens, and called …

Weeds as emerging threat to biodiversity: a consequence of spread of Ludwigia peruviana in Dhansiri and Kopili catchment areas of Assam, North East India

Wetlands seem to be more vulnerable to invasions compared to terrestrial ecosystems. The alien invasive weed, Ludwigia peruviana, invading the wetlands of the Dhansiri catchment and eastern part of Kopili in Assam has threatened the resident biodiversity and has also posed possibilities of spreading to other wetlands of North East …

Satellite observed water quality changes in the Laurentian Great Lakes due to invasive species, anthropogenic forcing, and climate change

Long time series of ocean and land color satellite data can be used to measure Laurentian Great Lakes water quality parameters including chlorophyll, suspended minerals, harmful algal blooms (HABs), photic zone and primary productivity on weekly, monthly and annual observational intervals. The observed changes in these water quality parameters over …

Five invasive pests cost African economy US$1 billion every year

New research by CABI reveals that just five invasive alien species are causing US$0.9 – 1.1 billion in economic losses to smallholder farmers across six eastern African countries each year, equating to 1.8% – 2.2% of total agricultural GDP for the region. These losses are expected to grow to $1.0 …

Fall armyworm 'threatens African farmers' livelihoods'

Scientists are calling for urgent action to halt the spread of a pest that is destroying maize crops is spreading rapidly across Africa. The fall armyworm poses a major threat to food security and agricultural trade, warns the Centre for Agriculture and Biosciences International (Cabi). It says farmers' livelihoods are …

The global distribution and drivers of alien bird species richness

Alien species are a major component of human-induced environmental change. Variation in the numbers of alien species found in different areas is likely to depend on a combination of anthropogenic and environmental factors, with anthropogenic factors affecting the number of species introduced to new locations, and when, and environmental factors …

Invasion of snowflake coral, Carijoa riisei (Duchassaing and Michelotti, 1860), in Indian seas: Threats to coral reef ecosystem

Present paper summarizes the occurrence of C. riisei in coral reefs of Indian seas, its likely impacts on the indigenous biota and policies for bioinvasion in the Indian context. With the limited information available on marine bioinvasion in tropical countries, especially in India, there is an urgent need of study …

First report of outbreaks of the Fall Armyworm Spodoptera frugiperda (J E Smith) (Lepidoptera, Noctuidae), a new alien invasive pest in west and central Africa

The fall armyworm Spodoptera frugiperda is a prime noctuid pest of maize on the American continents where it has remained confined despite occasional interceptions by European quarantine services in recent years. The pest has currently become a new invasive species in West and Central Africa where outbreaks were recorded for …

Living Planet Report 2016: risk and resilience in a new era

Global wildlife could plunge to a 67 per cent level of decline in just the fifty-year period ending this decade as a result of human activities, according to WWF’s Living Planet Report 2016. The report shows how people are overpowering the planet for the first time in Earth’s history and …

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