Alien invasive species

The biodiversity of Ba Vi National Park has been faced with some passive impacts, one of them is alien species, that habitats for the native species is narrowed by increasing of invasive population expanding, it is necessary to conducted a research on the impacts of the invasive plants there and then giving the basis for better management of the national park.

19p viberkshire 09-08-2023 4 2   Download

The observation that many alien species become invasive despite low genetic diversity has long been considered the ‘genetic paradox’ in invasion biology. This paradox is often resolved through the temporal buildup genetic diversity through multiple introduction events.

11p vihagrid 30-01-2023 5 3   Download

The Harlequin Ladybird, Harmonia axyridis (Pallas, 1773), is native to Eastern Asia but it has been introduced to many countries in Africa, America, and Eurasia. In Turkey, H. axyridis is one of the most fast-spreading invasive alien species. Since the collection of the first specimens in 2010, H. axyridis spread almost all over the country. The species spreads fast in Turkey according to the new records, obtained originally from the field studies and the citizen science data.

11p dolomite36 30-12-2021 8 0   Download

Cyperus entrerianus Boeckeler, an invasive alien plant from South America, is newly recorded from Vietnam. A morphological description, color illustrations, line drawings and distinguishable morphological characters of C. entrerianus from C. surinamensis and C. luzulae were provided, additionally and short notes, and habitat of the species were also given.

5p angicungduoc7 09-09-2020 23 2   Download

In this study, Trachemys scripta is recorded as invasive alien species from the area. In terms of herpetological distribution, mostly recorded species were found in the evergreen forest habitat (6 species of amphibians and 7 species of reptiles). Additionally, the largest number of species were recorded in March 2019 (12 amphibian species and 4 reptile species).

10p koxih_kothogmih5 04-09-2020 43 0   Download

The study on status of wetland birds in Chitwan National Park was carried out from February 5, 2014 to February 20, 2014. The study aimed to determine status and distribution pattern of wetland birds in Chitwan National Park. Study area was divided into four sectors viz; Sunachari to Sauraha, Sauraha to Kasara, Kasara to Rapti/Narayani confluence,and Rapti/Narayani confluence to Tribeni. The total number of wetland birds recorded in the study area was 36 species. Out of them, 15 were winter migratory birds belonging to 5 families, and 21 were residents belonging to 9 families.

10p nguathienthan1 24-11-2019 20 0   Download

This paper presents an alien plant species that has recently migrated into Romania, namely Bidens bipinnata L. For this species, the following information is provided: occurrence in Romania, a short botanical description, general distribution, way of migration, and general aspects regarding its biology, ecology, and invasive character.

4p vibasque27 27-03-2019 17 0   Download

The impact status of invasive species in the Hoi An mainland part is more serious than the situation in the islands. Base on the results, we suggest that, five species, beggar-ticks, coast morning glory Bay Biscayne creeping-oxeye, Blue porterweed and billygoat-weed should be added in the invasive appendix of the national invasive species list while three other species as vilfa stellata, guavaand rose myrtle should be listed in the potential appendix of that list.

17p jangni 16-04-2018 34 1   Download

Despite occupying only three percent of the earth’s surface, the ASEAN region hosts 20 percent of all known species that live deep in the region’s mountains, jungles, rivers, lakes and seas. The region includes three mega-diverse states (Indonesia, Malaysia, and the Philippines); several bio-geographical units (e.g., Malesia, Wallacea, Sundaland, Indo-Burma and the Central Indo-Pacific); and numerous centers of concentration of restricted-range bird, plant and insect species.

80p ranchoctdt7 16-07-2013 67 4   Download

After the training phase, the table T can be used to generate syn- thetic data; given a key a,b,c it can return the likely x,y,z values of that key along with the probabilities. Equivalently, T can evaluate the probability that some value is correct. The neat thing about this is that the framework allows you to add your own machine- learning algorithms to this framework. This gives the machine- learning community a vehicle to make their technology accessible...

11p yasuyidol 02-04-2013 43 4   Download

The following pages have been written at the request of many old friends, some of them co-workers in the cause of permanent British rule over the larger part of the Great Northern Continent of America. In 1851 I visited Canada and the United States as a mere tourist, in search of health. In 1861 I went there on an anxious mission of business; and for some years afterwards I frequently crossed the Atlantic, not only during the great Civil War between the North and South, but, also, subsequent to its close. In 1875 I had to undertake another mission of responsibility to the United States....

190p chonguoinoiay1 02-04-2013 64 6   Download

England and France started in a fair race for the magnificent prize of supremacy in America. The advantages and difficulties of each were much alike, but the systems by which they improved those advantages and met those difficulties were essentially different. New France was colonized by a government, New England by a people.

199p chonguoinoiay1 02-04-2013 50 4   Download

Plant species that invade an alien area and outgrow the native vegetation, establishing and increasing their own territory, often lead to negative economic, environmental, and social impacts. Even native species can behave like invasive species by their exponential spread. Similarly, not all non-native species are invasive. Many alien invasive species, however, do threaten the health and integrity of our terrestrial and aquatic ecosystems.

456p phoebe75 01-02-2013 67 12   Download

Transportation of species to areas outside their native ranges has been a feature of human culture for millennia. During this time such activities have largely been viewed as beneficial or inconsequential. However, it has become increasingly clear that human-caused introductions of alien biota are an ecological disruption whose consequences rival those of better-known insults like chemical pollution, habitat loss, and climate change. Indeed, the irreversible nature of most alien-species introductions makes them less prone to correction than many other ecological problems.

571p camchuong_1 11-12-2012 37 4   Download

Among the 22 indicators that underpin the international target to ‘reduce the rate of loss of biodiversity’ is one covering trends in invasive alien species. This Handbook, the fruit of a three year European Union-funded project, will make a significant contribution to a wider understanding of these trends as they relate to the continent of Europe.

421p camchuong_1 11-12-2012 90 2   Download

Climate change is likely to aid the spread of invasive alien species, further threatening agricultural productivity and food security through spread of weeds, pests, and diseases of crops and livestock. The introduction of new and adaptable exotic species for agriculture and to meet increasing demands for biofuels, mariculture, aquaculture, and reforestation presents a particular challenge.

74p yeurauxanh88 01-10-2012 38 3   Download

Invasive alien plants are harmful non-native plant species whose introduction or spread threatens the environment, the economy, and society, including human health. They can be introduced into Canada from other countries or continents, or from one region of Canada to another. The current threats posed by invasive alien plants are real and growing. Why are invasive alien plants a problem? The economic cost of invasive alien plants to Canadians is enormous. Weeds in crops and pastures alone cost an estimated $2.2 billion annually.

22p lulanphuong 22-03-2012 72 18   Download

Theo Công ước ĐDSH thông qua tại Hội nghị thượng đỉnh Trái đất 1992 tại Rio De Janeiro thì SVNL được định nghĩa: + SVNL( Alien species) là một loài, phân loài hay taxon phân loại thấp hơn, kể cả một bộ phận cơ thể bất kì( giao tử, trứng, chồi, mầm) có khả năng xuất hiện, sống sót và sinh sản bên ngoài vùng phân bố tự nhiên( trước đây hay hiện nay) và phạm vi phát tán tự nhiên của chúng. + SVNLXH( Invasive Alien Species) là một loài sinh vật lạ đã thích nghi, phát triển, tăng nhanh số lượng cá thể trong hệ...

27p nguyenphanngoctuyen 21-06-2011 113 19   Download