Impact of the invasive species Vossia cuspidata (Roxb.) Griff. on the diversity and temporal changes of the native flora of the River Nile in Egypt

Butterfly diversity was recorded from Nov (2013) - May (2014) in Pookode region. A total number of 128 species recorded from the five families; Nymphalidae (46 species) Lycaenidae (28 species), Hesperiidae (22 species), Pieridae (17 species) and Papilionidae (15 species) respectively. During the survey invasive plant species were also recorded. There were 36 species of invasive plants from 18 families identified from the study area. More butterflies were attracted towards nectar offering invasive plants. Chromolaena odorata, Ipomea cairica, Lantana camara, Merremia vitifolia, Mikania micrantha, Mimosa diplotricha, Pennisetumpolystachyon, Pteridium aquilinum, Quisqualis indica and Sphagneticola trilobata were the major invasive plants found in the Pookode region and their flower attracts butterfly for pollination. Even though nectar offered by the plants are supportive for growth, in long run these species can affect butterfly population bydeclining native host larval plant species for butterfly reproduction. Invasive species compete with the native flora and reduce its population. Management practices like physical, chemical and modern bio control measures could be used for eradicating of invasive plants. Wise use of invasive plants for other economical purpose such as bio-fuel, medicinal purpose, bio-pesticide and handicraft could be suggested. Successful management of invasive species are needed for conserving Lepidoptera fauna and other native biota of the area.

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Plant invasion as an emerging challenge for the conservation of heritage sites: the spread of ornamental trees on ancient monuments in Rome, Italy

Biological Invasions ◽

10.1007/s10530-020-02429-9 ◽

2020 ◽

Author(s):

Laura Celesti-Grapow ◽

Carlo Ricotta

Keyword(s):

Invasive Species ◽

Plant Invasion ◽

Woody Species ◽

Urban Environments ◽

Management Problem ◽

Native Flora ◽

Heritage Sites ◽

Suitable Habitats ◽

Ancient Monuments ◽

Ornamental Trees

AbstractCultural heritage sites such as historical or sacred areas provide suitable habitats for plants and play an important role in nature conservation, particularly in human-modified contexts such as urban environments. However, such sites also provide opportunities for the spread of invasive species, whose impact on monuments has been raising growing concerns. The aim of this study was to investigate the patterns of distribution and spread of invasive plants in heritage areas, taking the city of Rome as an example. We focused on woody species as they pose the greatest threat to the conservation of monuments, owing to the detrimental effects of their root system. We analysed changes in the diversity and traits of native and non-native flora growing on the walls of 26 ancient sites that have been surveyed repeatedly since the 1940s. We found that the diversity of the native flora has steadily decreased, while there has been an increase in non-native, larger and more damaging species. The introduced species that have expanded most are ornamental wind- or bird-dispersed trees, which represent a major management problem as their propagules can reach the upper sections of the monuments, where they become more difficult to control. The most widespread and damaging of such species is Ailanthus altissima, which has recently been included among the invasive species of European Union concern (EU Regulation 2019/1262). Our findings show that plant invasion is an emerging challenge for the conservation of heritage sites and needs to be prioritized for management to prevent future expansion.

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Lack of Evidence for Impact of the European White Birch, Betula pendula, on the Hydrology of Wainfleet Bog, Ontario

The Canadian Field-Naturalist ◽

10.22621/cfn.v117i3.741 ◽

2003 ◽

Vol 117 (3) ◽

pp. 393

Author(s):

Joshua Diamond ◽

Mark Browning ◽

Andrew Williams ◽

John Middleton

Keyword(s):

Invasive Species ◽

Water Table ◽

Significant Relationship ◽

Repeated Measures ◽

Betula Pendula ◽

White Birch ◽

Native Flora ◽

Dry Conditions ◽

Analysis Of Results ◽

Over Time

Over time peat harvesting and human encroachment have devastated the hydrology of Wainfleet Bog. Disturbances caused by human activities have rendered the bog ecosystem vulnerable to an influx of invasive species. The European White Birch (Betula pendula) has contributed to the degradation of the Wainfleet Bog. The disrupted hydrology has allowed for the development of dry conditions that have enabled B. pendula to take over habitats that were once dominated by native flora. To determine whether B. pendula was depressing the water table through evapotranspiration, we examined water table levels (March 1998 to July 1999) and vegetative data from 15 well stations. Analysis of results using a Repeated Measures Statistic Design failed to demonstrate a significant relationship between the presence of B. pendula and water table levels at Wainfleet Bog.

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Invasive Species in Puerto Rico: The View From El Yunque

Frontiers in Ecology and Evolution ◽

10.3389/fevo.2021.640121 ◽

2021 ◽

Vol 9 ◽

Author(s):

Jess K. Zimmerman ◽

Julissa Rojas-Sandoval ◽

Aaron B. Shiels

Keyword(s):

Invasive Species ◽

Puerto Rico ◽

Native Species ◽

Current Status ◽

Feral Cat ◽

Native Flora ◽

Disturbed Areas ◽

The Status ◽

History Of ◽

Taxonomic Groups

Native flora and fauna of Puerto Rico have a long biogeographic connection to South America. Theory and empirical evidence suggest that islands, particularly those distantly isolated from the mainland, should be more susceptible to naturalizations and invasions of non-native species than continental areas. Anthropogenic disturbances can facilitate accidental and deliberate introductions of non-native species. In this study, we asked: What is the current status of introduced species within El Yunque National Forest (EYNF), the largest and most well-conserved forest area of Puerto Rico? To address this question, we reviewed the literature and surveyed local experts to identify introduced plant and animal taxa that are behaving as invaders within EYNF. We hypothesized that well-conserved forest areas within EYNF would be more resistant to invasions than disturbed areas along roads and ruderal areas with a long history of human activity. We found that there is only partial evidence that supports our hypothesis and this evidence is strongest in vascular plants, but not for the other taxonomic groups analyzed. Our combined results showed that currently the more ubiquitous invasive species in EYNF include some mammals (feral cat, rat, and mongoose) and some invertebrates (earthworms, mosquito, and Africanized honeybee). For many taxa, there is little information to thoroughly test our hypothesis, and thus more detailed surveys of the status of non-native and invasive species in EYNF are needed.

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Sosnowsky’s hogweed – current environmental problem

Ochrona Srodowiska i Zasobów Naturalnych ◽

10.1515/oszn-2017-0020 ◽

2017 ◽

Vol 28 (3) ◽

pp. 40-44 ◽

Cited By ~ 1

Author(s):

Jarosław Chmielewski ◽

Jarosław Pobereżny ◽

Magdalena Florek-Łuszczki ◽

Ilona Żeber-Dzikowska ◽

Monika Szpringer

Keyword(s):

Invasive Species ◽

Human Health ◽

Natural Environment ◽

Invasive Plant ◽

Environmental Problem ◽

Frequency Of Occurrence ◽

Negative Effects ◽

The Caucasus ◽

Natural Plant ◽

Native Flora

AbstractSosnowsky’s hogweed was brought to Poland as a silage plant for cattle in the mid-20th century from the Caucasus. It was grown mainly in National Farms. However, the hogweed quickly spread across the natural environment. It is a highly invasive plant and possesses strong burning qualities. Every year many people suffer from its burns. The hogweed is also dangerous for animals. Being an invasive species, it displaces natural plant species of the native flora. It can threaten the flora and landscape of a particular area. The aim of the article is to present the problem including the frequency of occurrence of Sosnowsky’s hogweed in Poland, to show the negative effects for human health and the methods to fight it in its habitat.

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Invasibility and wildlife conservation: invasive species on nature reserves

Philosophical Transactions of the Royal Society of London Series B Biological Sciences ◽

10.1098/rstb.1986.0081 ◽

1986 ◽

Vol 314 (1167) ◽

pp. 695-710 ◽

Cited By ~ 40

Keyword(s):

Invasive Species ◽

Wildlife Conservation ◽

Nature Reserves ◽

Control Measures ◽

Impatiens Glandulifera ◽

Myocastor Coypus ◽

Native Flora ◽

Rhododendron Ponticum ◽

Conservation Values ◽

The Impact

Nature reserves are often considered to be assemblages of species in natural or semi-natural communities. However, in many parts of the world they also contain exotic species that interact with the native flora and fauna. An International Working Group has been endeavouring to understand the management of invasive species in natural landscapes. Data for four invasive species within the British Isles are analysed. The case studies investigated include Indian balsam ( Impatiens glandulifera ) , rhododendron ( Rhododendron ponticum ), mink ( Mustela vison ) and coypu ( Myocastor coypus ). The rates of spread have been variable, usually increasing after an establishment phase. The discussions concentrate on assessing the impact of invasive species, on deciding whether control measures are feasible and/or desirable, on deciding whether or not nature reserves are less prone to invasion than other habitats, and on assessing wildlife conservation values when invasive species are present.

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Lectotypification of the fountain grass Cenchrus setaceus (Poaceae: Paniceae)

Phytotaxa ◽

10.11646/phytotaxa.218.2.7 ◽

2015 ◽

Vol 218 (2) ◽

pp. 171

Author(s):

PEDRO PABLO FERRER-GALLEGO ◽

FERNANDO BOISSET

Keyword(s):

Invasive Species ◽

Ornamental Plant ◽

Natural Habitats ◽

Native Flora ◽

Wide Range ◽

The World

The typification of the name Cenchrus setaceus (Forsskål) Morrone (Poaceae) is discussed, and a lectotype is designated. Cenchrus setaceus is native to northeastern Africa, and cultivated as an ornamental plant in some parts of the world. It is an invasive species in a wide range of natural habitats worldwide, competing strongly with the native flora.

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Cultivation of Thyrsopteris elegans

Sibbaldia: the International Journal of Botanic Garden Horticulture ◽

10.24823/sibbaldia.2004.100 ◽

2004 ◽

pp. 27-31

Author(s):

Andy Ensoll ◽

Kate Matthews

Keyword(s):

Invasive Species ◽

Royal Botanic Garden ◽

Alien Invasive Species ◽

Botanic Garden ◽

Native Flora ◽

Juan Fernández Islands ◽

Restricted Distribution ◽

Large Numbers ◽

Juan Fernandez Islands

Thyrsopteris elegans Kunze is a monospecific genus of fern endemic to the Juan Fernandez Islands, off the coast of Chile. These islands have large numbers of alien invasive species and the native flora, including T elegans which already has a very restricted distribution, is consequently under considerable threat. One of the largest examples of this species in cultivation in Britain grows at the Royal Botanic Garden Edinburgh and this paper describes its propagationand cultivation.

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Tecoma stans (L.) Juss. ex. Kunth: A potential invader in the State of Himachal Pradesh

Indian Journal of Forestry ◽

10.54207/bsmps1000-2019-82ftuo ◽

2019 ◽

Vol 42 (3) ◽

pp. 213-217

Author(s):

Kuldeep Singh Dogra ◽

◽

Sushmita Uniyal ◽

Rajni Kant Thakur ◽

◽

...

Keyword(s):

Invasive Species ◽

Himachal Pradesh ◽

Ornamental Plant ◽

The State ◽

Native Flora ◽

The Road ◽

Bright Yellow

The paper highlights the threat posed to the native flora by the Tecoma stans (L.) Juss. ex. Kunth which was introduced in Himachal Pradesh as an ornamental plant for its bright yellow trumpet shaped flowers. The species has already been included in the list of Global Invasive Species Database (GISD). The species is rapidly invading along the road sides, forest margins and in the grasslands in Himachal Pradesh especially in the district Bilaspur and Mandi. Therefore it requires a timely attention for its management and eradication from the wild before its establishment.

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The endangered Daffodil Orchid Ipsea speciosa (Orchidaceae): Population status in unprotected areas in the Central Highlands, Sri Lanka

Lankesteriana ◽

10.15517/lank.v20i1.41434 ◽

2020 ◽

Author(s):

J. Dananjaya Kottawa-Arachchi ◽

M. G. S. Liyanage ◽

H. K. B. M. I. Karunarathne ◽

N. H. A. S. Abeyweera ◽

B. Y. M. Kulasinghe ◽

...

Keyword(s):

Invasive Species ◽

Sri Lanka ◽

Species Composition ◽

Plant Species ◽

Anthropogenic Activities ◽

Monitoring Program ◽

Terrestrial Orchid ◽

Alien Plant ◽

Native Flora ◽

Terrestrial Orchids

The Daffodil Orchid, Ipsea speciosa, is a rare endemic terrestrial orchid species found in the highland grasslands of Sri Lanka. Due to the restricted distribution range, this species is considered as an endangered taxon. This study aimed to assess the present state of I. speciosa populations outside of protected areas. During field investigations of nine selected grasslands, the abundance of I speciosa and accompanying plant species composition was determined. The abundance of I. speciosa varied from 2 to 23 flowering plants per site. Species composition in study sites consisted of 41 plant taxa that included 12 invasive species. Habitat deterioration, intentional burning, clearing of vegetation, and spread of invasive alien plant species were found to be the most significant threats to highland grasslands and the orchid. During the survey, we observed the rapid spreading of invasive species in most of the sites which suggests that the terrestrial orchid population could shrink further. Apart from intentional burning, other serious threats to the orchids are various anthropogenic activities such as illegal collection for medicinal purposes and establishing timber plantations that negatively impact native grassland flora including terrestrial orchids. Our results suggest that a continuous monitoring program for I. speciosa should be initiated. Additionally, monitoring of potentially adverse anthropogenic activities is considered to be vital for the conservation of valuable grasslands and native flora of Sri Lanka. Key worDS: Epidendroideae, grasslands, invasive species, native flora, terrestrial orchids, threatened species

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