Evaluating the invasive status of Mimosa pigra L., Eupatorium odoratum L. and Eichhornia crassipes (mart.) Solms in Tram Chim National Park in Dong Thap province

2021 ◽  
Vol 10 (5) ◽  
pp. 84-92
Author(s):  
Nhung Nguyen Thi cam ◽  
Quan Dang Minh
Keyword(s):  
National Park ◽  
Eichhornia Crassipes ◽  
Mimosa Pigra ◽  
Invasive Status

scholarly journals A revised list of alien plants for the Kruger National Park

Koedoe ◽  
2003 ◽  
Vol 46 (2) ◽  
Author(s):  
L.C. Foxcroft ◽  
L. Henderson ◽  
G.R. Nichols ◽  
B.W. Martin
Keyword(s):  
Biological Control ◽  
National Park ◽  
Alien Plants ◽  
Kruger National Park ◽  
Invasive Alien Plants ◽  
Habitat Types ◽  
Agricultural Resources ◽  
Invasive Status ◽  
Current Impact ◽  
Considerable Damage

Alien plants recorded in the Kruger National Park are listed, providing an update of species that have been recorded since the last published list in 1988. The serious consequences that invasive alien plants pose are widely recognised internationally and are regarded as the greatest threat to the Kruger National Park. It is extremely important to maintain an updated list of species to use as a reference and from which to monitor changes in the influx of invasive species. The list contains the invasive status of the plants, current impact, habitat types, biological control status and status according to the Conservation of Agricultural Resources Act (CARA), Act 43 of 1983, as amended in March 2001. The list comprises 370 species, of which 121 are invaders and two are transformer weeds, which may cause considerable damage and alterations to the indigenous biodiversity. A total of 91 species listed herein are also listed in the CARA regulations or are proposed additions to the CARA regulations.

scholarly journals Jenis-Jenis Tumbuhan Suku Fabaceae, Subfamili Caesalpinioideae Di Areal Kampus Universitas Tadulako, Palu

2019 ◽  
Vol 8 (2) ◽  
Author(s):  
Rahmita Rahmita ◽  
Ramadanil Ramadanil ◽  
Moh. Iqbal
Keyword(s):  
Leucaena Leucocephala ◽  
Ornamental Plants ◽  
University Campus ◽  
Mimosa Pudica ◽  
Senna Siamea ◽  
Botanical Exploration ◽  
Acacia Farnesiana ◽  
Mimosa Pigra ◽  
Invasive Status ◽  
Albizia Saman

Research on the species of Plants of the Fabaceae Tribe Subfamili Caesalpinioideae at the area of Tadulako University Campus has been conducted from January to April 2019. This study aims to record, describe and determine the invasive status of plant species Fabaceae subfamili Caesalpinioideae. The research was based on botanical exploration method. The results showed there were 10 species from subfamily Caesalpinioideae including Acacia farnesiana (L.) Willd., Albizia saman (Jacq.) Merr., Caesalpinia pulcherrima (L.) Sw., Cassia javanica L., Delonix regia (Hook.) Raf., Desmanthus virgatus (L.) Willd., Leucaena leucocephala (Lam.) de Wit, Mimosa pigra L., Mimosa pudica L., Senna siamea (Lam.) H.S.Irwin & Barneby. Number of Species have been used as protective plants (5 species), as ornamental plants (2 species) and potentially as invasive species (3 species).

scholarly journals Environmental variables and macrophytes of lakes of the Chitwan National Park, Central Nepal

2020 ◽  
Vol 20 (3) ◽  
pp. 135-144
Author(s):  
Ashika Bhusal ◽  
Anjana Devkota
Keyword(s):  
Environmental Variables ◽  
National Park ◽  
Eichhornia Crassipes ◽  
Monsoon Season ◽  
Inorganic Phosphorus ◽  
Total Alkalinity ◽  
Polluted Water ◽  
Total Hardness ◽  
Phosphorus Concentration ◽  
Chitwan National Park

AbstractWetlands are areas where water is the primary factor controlling the environment, associated plant and animal life. The present study has been conducted to investigate the environmental variables of water and to make a quantitative analysis of aquatic macrophytes. Five lakes, i.e. Tamor, Beeshazar, Kingfisher, Athaieshazar and Chepang of the Chitwan National Park were studied during the post-monsoon season. Four different sites were studied for each lake. 12 replica of water samples were collected from each site of the lakes and environmental variables of water i.e. pH, temperature, dissolved oxygen, total alkalinity, conductivity, total hardness, nitrate, inorganic phosphorus, total solid matter and free CO2 were analyzed. Macrophyte floras were collected during field sampling with the help of a 1m×1m light wooden quadrat and herbaria were prepared following the standard technique. Altogether 10 quadrats (five paired quadrats) were plotted in each site of the study area. Data obtained from water analysis and macrophytes were analyzed by SPSS statistics 20 and CANACO version 4.5. Higher values of nitrate and inorganic phosphorus were found in Beeshazar Lake and Tamor Lake, i.e. 4.41 ±0.52 mg dm–3 and 2.93 ±0.29 mg dm–3, respectively. In most of the lakes, macrophyte species, mostly Eichhornia crassipes was found to be dominant in terms of the importance value index (IVI), whereas in Tamor Lake, Spirodela polyrhiza was dominant. All the studied lakes were in the hypereutrophic category on the basis of nitrate and phosphorus concentration. Runoff of polluted water with agricultural fertilizers, pesticides and untreated industrial discharge as well as domestic wastes from the Khageri canal and excessive growth of invasive macrophytes are major threats to the studied lakes. The luxuriant growth of invasive macrophytes like Eichhornia crassipes also revealed the productive nature of the lakes and they can be taken as ecological indicators of organic pollution.

scholarly journals A List of Alien Plants in the Kruger National Park

Koedoe ◽  
1988 ◽  
Vol 31 (1) ◽  
Author(s):  
I.A.W. Macdonald ◽  
W.P.D. Gertenbach
Keyword(s):  
Invasive Species ◽  
National Park ◽  
Vascular Plant ◽  
Alien Plants ◽  
Ecological Impacts ◽  
Kruger National Park ◽  
Important Species ◽  
Invasive Status ◽  
And Control ◽  
Trees And Shrubs

The alien vascular plant flora of the Kruger National Park is listed. Annotations cover the invasive status, modes of introduction and dispersal, dates of first recording, ecological impacts and control status of each species. The list comprises 156 species of which 113 are considered invasive within the park. Most of the species have been accidentally introduced to the park. The ecological impacts of 27 species (of which 11 are trees and shrubs) were rated as moderate or high. By 1985 only 10 species are thought to have been eradicated from the park. Most of the invasive species are herbaceous weeds of man-disturbed sites and the eradication of these is generally considered impossible. Most of the important species are dispersed by water and animals. The significance of limiting reinvasion of the park down the rivers flowing into the park, is stressed.

scholarly journals Levantamento de plantas aquáticas no reservatório de Salto Grande, Americana-SP

2011 ◽  
Vol 29 (1) ◽  
pp. 231-236 ◽  
Author(s):  
D. Martins ◽  
S.R. Marchi ◽  
N.V. Costa ◽  
L.A. Cardoso ◽  
A.C. Rodrigues-Costa
Keyword(s):  
Eichhornia Crassipes ◽  
Pistia Stratiotes ◽  
Alternanthera Philoxeroides ◽  
Typha Angustifolia ◽  
Cyperus Difformis ◽  
Hedychium Coronarium ◽  
Mimosa Pigra

O objetivo deste estudo foi determinar a frequência relativa e o nível de infestação de cada espécie da flora aquática presente no reservatório de Salto Grande, Americana-SP. O levantamento e a identificação das plantas aquáticas foram realizados percorrendo-se as margens do reservatório em uma embarcação. Ao longo dele foram estabelecidos 20 pontos de avaliação, sendo todos eles fotografados e georreferenciados. Foram atribuídos valores de 0 a 100% tanto para as espécies presentes como para os espaços livres de macrófitas aquáticas que eventualmente pudessem ocorrer dentro dos pontos amostrados. Com os dados referentes ao número de indivíduos e pontos avaliados, foi determinada a frequência relativa de cada espécie. Foram identificadas 13 espécies em todo o reservatório, sendo 12 vasculares e uma de alga-verde (Chlorella spp.). Entre as espécies vasculares, nove eram plantas emersas flutuantes, as quais poderiam estar ou não ancoradas no leito do reservatório: Alternanthera philoxeroides, Brachiaria subquadripara, Cyperus difformis, Echinochloa polystachia var. spectabilis, Eichhornia crassipes, Panicum rivulare, Pistia stratiotes, Salvinia auriculata e Typha angustifolia. Outras três espécies foram encontradas somente em solo firme alagado: Aeschynomene sensitiva, Hedychium coronarium e Mimosa pigra.

scholarly journals Trichoptera (Insecta) in water hyacinth roots: evaluation of the influence of exotic mussel and environmental factors

2015 ◽  
Vol 27 (4) ◽  
pp. 341-355 ◽  
Author(s):  
Sandra Francisca Marçal ◽  
Claudia Tasso Callil ◽  
Rogério Conceição Lima dos Santos
Keyword(s):  
Water Hyacinth ◽  
National Park ◽  
Eichhornia Crassipes ◽  
Aquatic Invertebrates ◽  
Biotic Resistance ◽  
Abiotic Factors ◽  
Limnoperna Fortunei ◽  
Hypoxic Conditions ◽  
Initial Assumption ◽  
Floating Vegetation

Abstract Aim: Information on the influence of mussel macrofouling in invertebrate communities usually have the initial assumption of negative interference. Methods We analyzed this relationship in a community of aquatic invertebrates associated to roots of Eichhornia crassipes in 15 shallow marginal lakes in the Pantanal National Park and surroundings. We sampled quadrants of floating vegetation, identified the aggregate fauna and evaluated the density effect of Limnoperna fortunei, as well as abiotic factors of the Trichoptera community using ordinances and multivariate regressions. Results We found no significant relationship between the abundance of mussels on the macrophytes and the Trichoptera larvae. However, we observed an interference of oxygen on the structure and density of genera. The composition and abundance of the phytophylous caddisfly community is influenced by the depth and the concentration of oxygen dissolved in the marginal regions of the lakes. Conclusions We suggest that the absence of the effects of the assessed L. fortunei in the community is related to the 'biotic resistance', in which the phytophylous caddisfly demonstrated adaptation to an environment characterized by hypoxic conditions in the dry season. L. fortunei was limited by the depth and reduction of oxygen, presenting lower density in lakes with such characteristics.

scholarly journals Rapid Spread of the Invasive Brown Alga Rugulopteryx okamurae in a National Park in Provence (France, Mediterranean Sea)

Water ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 2306
Author(s):  
Sandrine Ruitton ◽  
Aurélie Blanfuné ◽  
Charles-François Boudouresque ◽  
Dorian Guillemain ◽  
Valérie Michotey ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Brown Alga ◽  
National Park ◽  
Large Population ◽  
Algal Species ◽  
Paracentrotus Lividus ◽  
Northwest Pacific ◽  
Strait Of Gibraltar ◽  
Invasive Status ◽  
First Occurrence

The temperate Northwest Pacific brown alga Rugulopteryx okamurae (Dictyotales, Phaeophyceae) was first discovered in 2002 in the Mediterranean Sea in the Thau coastal lagoon (Occitania, France) and then again in 2015 along the southern side of the Strait of Gibraltar, where it was assigned with invasive status. We report here on the first occurrence of the species in the Northwest Mediterranean Sea in Calanques National Park (Marseille, France) in 2018. By 2020, a large population had developed, extending over 9.5 km of coastline, including highly protected no-take zones. The seafood trade, with R. okamurae used as packing material for sea urchin Paracentrotus lividus shipments from Thau Lagoon, could be the vector of its introduction into the Marseille area. As observed in the Strait of Gibraltar, R. okamurae is spreading rapidly along the Marseille coasts, suggesting an invasive pathway. The subtidal reefs are densely carpeted with R. okamurae, which overgrows most native algal species. Fragments of the alga are continuously detached by wave actions and currents, sedimenting on the seabed and potentially clogging fishing nets, and thus, impacting artisanal fishing or washing up on the beaches, where they rot and raise concern among local populations.

Ultrastructural Localization of Phycocyanin in the Acidophilic, Thermophilic Alga, Cyanidium Caldarium

1973 ◽  
Vol 31 ◽  
pp. 462-463
Author(s):  
M. R. Edwards ◽  
J. D. Mainwaring
Keyword(s):  
Yellowstone National Park ◽  
National Park ◽  
Ultrastructural Localization ◽  
Review Of Literature ◽  
Cyanidium Caldarium ◽  
Taxonomic Rank ◽  
Thin Sections ◽  
Standard Methods ◽  
Laboratory Cultures

Although the general ultrastructure of Cyanidium caldarium, an acidophilic, thermophilic alga of questionable taxonomic rank, has been extensively studied (see review of literature in reference 1), some peculiar ultrastructural features of the chloroplast of this alga have not been noted by other investigators.Cells were collected and prepared for thin sections at the Yellowstone National Park and were also grown in laboratory cultures (45-52°C; pH 2-5). Fixation (glutaraldehyde-osmium), dehydration (ethanol), and embedding (Epon 812) were accomplished by standard methods. Replicas of frozenfracture d- etched cells were obtained in a Balzers apparatus. In addition, cells were examined after disruption in a French Press.

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