scholarly journals Dolichandra unguis-cati (cat's claw creeper).

Author(s):  
Julissa Rojas-Sandoval

Abstract Dolichandra unguis-cati is a vigorous, woody vine that can climb up to 15 m or higher. Due to its showy yellow flowers, it has been widely introduced as a garden ornamental. It has escaped from cultivation and become a significant invader of cultivated orchards, riparian corridors, natural forest remnants and disturbed areas, such as roadsides and urban spaces. D. unguis-cati clings tenaciously to any substrate with adventitious roots and clawed tendrils. This vigorous growth allows it to sprawl over other vegetation and, through a combination of both shading and weight, it can kill even large canopy trees. In the absence of climbing support, D. unguis-cati grows along the ground forming a thick carpet that inhibits the growth and seed germination of native understorey vegetation including native grasses, herbs and seedlings of shrubs and trees. Currently, this vine species is listed as invasive in Kenya, Malawi, Tanzania, South Africa, Australia, New Zealand, India, China, Mauritius, New Caledonia, Cuba, the Bahamas and the USA including Hawaii, Florida and Texas (Kairo et al., 2003; Henderson, 2001; Weber et al., 2008; Weeds of Australia, 2011; Oviedo Prieto et al., 2012; Randall, 2012; PIER, 2016).

2020 ◽  
Author(s):  
Jeanine Vélez-Gavilán

Abstract Brassica rapa is an annual to biennial herb that is widely cultivated as a vegetable or oilseed crop. It has escaped and become weedy or invasive in cultivated fields and disturbed areas. In Oceania it is listed as an invasive in Australia, Fiji, New Caledonia and New Zealand. In North America it is listed as invasive in some areas of Canada and the USA. In USA, seed use is restricted in Arizona and Michigan. It is also listed as invasive in Cuba, Mexico, Nicaragua, Chile, Ecuador and Peru. There is limited information available about its invasiveness and how it affects habitats, but it has been reported that the species can displace desirable vegetation if not properly managed. In California, USA it establishes in disturbed areas and forms dense stands that can displace native vegetation. In Mexico, although B. rapa is a frequent species in disturbed areas, there are no conclusive data about its negative impact on natural habitats. Its low stature prevents B. rapa from shading other species, and as most of its growth occurs during the winter months and the rainy season it avoids competition with many native species.


2013 ◽  
Vol 73 (2) ◽  
pp. 367-374 ◽  
Author(s):  
A Nemésio

The two largest Atlantic Forest remnants in the state of Espírito Santo, eastern Brazil, namely ‘Reserva Biológica de Sooretama’ (REBIO Sooretama) and ‘Reserva Natural Vale’ (RNV), were surveyed for their orchid-bee faunas. Seventeen scent baits were used to attract orchid-bee males. Three-thousand, two hundred and twenty-five males belonging to 24 species were actively collected with insect nets during 100 hours in March, April and December, 2009. In comparison with a previous study in the same area twelve years before, it is evident that the abundance of all forest-dependent orchid bees analysed declined around 50%, and it was statistically significant (P = 0.022) for Euglossa marianae Nemésio, 2011, the most sensitive to anthropogenic disturbances of all Atlantic Forest orchid bees. On the other hand, the abundance of populations of species tolerant to open or disturbed areas rose. Possible explanations are discussed.


2020 ◽  
Author(s):  
Julissa Rojas-Sandoval

Abstract Producing large quantities of seeds, D. aegyptium is a pioneer grass that quickly colonizes disturbed areas with light sandy soils, often near to coasts or where water accumulates. It is a common component of weed floras throughout the tropics but is rarely reported as an aggressive weed on its own. It is not on federal or state noxious weed lists in the USA and is not recorded on the ISSG database but is recorded by PIER (2016) as invasive on a number of Pacific and American islands including French Polynesia Islands, Micronesia, the Northern Mariana Islands and Hawaii. It is also listed as invasive on islands in the Mediterranean, the USA, Mexico, Costa Rica, Puerto Rico, Virgin Islands and the Lesser Antilles (Vibrans, 2009; Florida Exotic Pest Plant Council, 2011;Chacón and Saborío, 2012; Burg et al., 2012; Rojas-Sandoval and Acevedo-Rodríguez, 2015; DAISIE, 2016; USDA-NRCS, 2016).


2020 ◽  
Author(s):  
Fabiola Areces-Berazain

Abstract Triumfetta rhomboidea is an environmental and agricultural weed widely distributed in the tropics and subtropics worldwide. It is a competitive shrub species that disperses by means of its epizoochorous burs, and can become invasive in pastures and disturbed areas where it can form dense stands. It has been listed as invasive in Cuba, Mayotte, India, Australia, American Samoa, Cook Islands, French Polynesia, Hawaii, New Caledonia, Niue, Tonga and Wallis and Futuna.


2021 ◽  
Vol 94 ◽  
pp. 01005
Author(s):  
Maria Vlasova ◽  
Leyla Leonova

This article provides Russian and foreign experience of successful implementation of projects for redevelopment of industrial zones in large cities. Some projects implemented in Moscow, St. Petersburg are considered in more details. Among foreign projects, the experience of such countries as Great Britain, the USA and China (Hong Kong) should be especially noted. The main goal of the redevelopment of industrial zones in large cities in Russia is to maintain a balance between comfort and convenience for citizens and the interest of investors to give in the implementation of such investment projects. The implementation of projects in the Russian Federation started in 2010. At present, part of the industrial zones in Moscow and St. Petersburg has been almost completely reorganized. Residential complexes, social and cultural facilities, shopping and entertainment centers, roads, parking lots and other infrastructure facilities have been built today instead of industrial zones. In order to meets the requirements of the modern economy, in some cases, industry production has been preserved. The main problems in the implementation of redevelopment projects have been identified, among them are: the absence of the necessary legislation and a clear systemic plan for the reorganization of urban spaces. The authors of the article propose to create a clear concept in Russia for the transformation and redevelopment of industrial areas based on the integrated development of entire residential neighborhoods with all infrastructure facilities, which must be adopted and evaluated with the support of government authorities.


2020 ◽  
Author(s):  
Julissa Rojas-Sandoval

Abstract Lupinus plattensis is a fast-growing, perennial herb native to the USA. It can be weedy or invasive primarily in disturbed and ruderal areas, within and outside its native distribution range. The species spreads both by seed and vegetatively by rootstocks, and has the potential to rapidly colonize disturbed areas. Currently, it is listed as invasive only in the Dominican Republic, although no specific impacts have been recorded.


2020 ◽  
Author(s):  
Julissa Rojas-Sandoval

Abstract E. ophiuroides is a perennial grass that has been intentionally introduced into tropical and warm temperate areas to be used as a lawn grass (USDA-ARS, 2016). In the United States it has become a common lawn grass principally in the southeastern states (Brosnan and Deputy, 2008; Duble, 2016). However, in the USA, it also behaves as a weed principally in disturbed sites and along roadsides (Coile, 1993; USDA-NRCS, 2016) and Miller et al. (2010) recently reported that it is invading natural and disturbed areas across the southern states. It is also listed as an invasive grass in Puerto Rico (Rojas-Sandoval and Acevedo-Rodríguez, 2015). E. ophiuroides spreads easily by seeds and by stolons and grows forming dense mats of prostrate, low-growing stems and leaves (Brosnan and Deputy, 2008). Plants also recover quickly after fire (Walsh, 1994).


2020 ◽  
Author(s):  
Julissa Rojas-Sandoval

Abstract B. madagascariensis is a shrub native to Madagascar that has been introduced outside its native range as an ornamental and hedge plant (USDA-ARS, 2016). This species has escaped from cultivation and once naturalized it behaves as an aggressive invader principally in ruderal and heavily disturbed areas (Starr et al., 2003; GISD, 2016). Its rapid growth enables it to form dense impenetrable thickets that outcompete and displace native vegetation. In addition to its aggressive growth, this species produces fleshy fruits with numerous seeds that can be easily dispersed by birds and other animals. While seeds are not produced in some areas, the ability of this species to regenerate from stem fragments allows dispersal to distant locations as stem fragments can be carried by animals (i.e., birds and livestock), humans, vehicles, and waterways (Starr et al., 2003; Norman, 2012; GISD, 2016; Weeds of Australia, 2016). Currently it has been listed as invasive in Bermuda, South Africa, St Helena, New Zealand, New Caledonia, Hawaii and Australia (MacKee, 1994; Wagner et al., 1999; Kairo et al., 2003; Henderson, 2007; GISD, 2016; PIER, 2016; Weeds of Australia, 2016).


2021 ◽  
Author(s):  
Fabiola Areces-Berazain

Abstract M. umbellata is a climbing weed widely distributed in tropical regions throughout the world. It is one of the commonest and most widespread species of Merremia. Due to its attractive yellow flowers, it has been introduced as an ornamental in several countries where has become naturalized. It is typically found in disturbed areas and as a weed in agricultural crops and plantations, but little is known about its environmental impact. The PIER website (PIER, 2016) lists it as invasive in Hawaii, Fiji, Micronesia, French Polynesia, New Caledonia and the Galápagos Islands, although regional floras and reports (see references in the distribution table) do not explicitly indicate so. It is also considered invasive in Cuba (Oviedo Prieto et al., 2012) and American Samoa (Speith and Harrison, 2012).


2021 ◽  
Author(s):  
Julissa Rojas-Sandoval

Abstract Producing large quantities of seeds, D. aegyptium is a pioneer grass that quickly colonizes disturbed areas with light sandy soils, often near to coasts or where water accumulates. It is a common component of weed floras throughout the tropics but is rarely reported as an aggressive weed on its own. It is not on federal or state noxious weed lists in the USA and is not recorded on the ISSG database but is recorded by PIER (2016) as invasive on a number of Pacific and American islands including French Polynesia Islands, Micronesia, the Northern Mariana Islands and Hawaii. It is also listed as invasive on islands in the Mediterranean, the USA, Mexico, Costa Rica, Puerto Rico, Virgin Islands and the Lesser Antilles (Vibrans, 2009; Florida Exotic Pest Plant Council, 2011;Chacón and Saborío, 2012; Burg et al., 2012; Rojas-Sandoval and Acevedo-Rodríguez, 2015; DAISIE, 2016; USDA-NRCS, 2016).


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