scholarly journals Oldenlandia corymbosa (flat-top mille graines).

Author(s):  
Julissa Rojas-Sandoval

Abstract Oldenlandia corymbosa is a widespread polymorphic weed with a pantropical distribution. It is fast-growing and can rapidly colonize disturbed areas, open sites, gardens, farmlands, forest edges, grasslands, roadsides and riverbanks. O. corymbosa also produces large volumes of tiny seeds that can be easily dispersed by water, animals and vehicles, or as a contaminant in soil and agricultural produce. Its weedy habit, preference for disturbed sites and tiny seeds all facilitate its spread and colonization of new habitats.

2021 ◽  
Author(s):  
Julissa Rojas-Sandoval

Abstract Oldenlandia corymbosa is a widespread polymorphic weed with a pantropical distribution. It is fast-growing and can rapidly colonize disturbed areas, open sites, gardens, farmlands, forest edges, grasslands, roadsides and riverbanks. O. corymbosa also produces large volumes of tiny seeds that can be easily dispersed by water, animals and vehicles, or as a contaminant in soil and agricultural produce. Its weedy habit, preference for disturbed sites and tiny seeds all facilitate its spread and colonization of new habitats.


2020 ◽  
Author(s):  
Julissa Rojas-Sandoval

Abstract As many other species within the genus Emilia, E. coccinea is herb that behaves as an environmental and agricultural weed. This fast-growing herb has the potential to rapidly colonize disturbed areas, waste grounds, gardens, forest edges, pastures, active and abandoned cultivated lands, roadsides, dry thickets and riverbanks. This species is adapted to grow in a wide range of environmental conditions and has wind-dispersed seeds, which are features that may facilitate its spread into new habitats. It is listed as invasive in Hawaii, Dominican Republic and New Caledonia.


2021 ◽  
Author(s):  
Julissa Rojas-Sandoval ◽  
Pedro Acevedo-Rodríguez

Abstract E. fosbergii is a cosmopolitan annual herb included in the Global Compendium of Weeds (Randall, 2012). It is fast-growing, with the capacity to grow as a weed and colonize disturbed areas, waste ground, gardens, abandoned farmland, coastal forests, forest edges, pastures, roadsides, rocky areas, and riverbanks (Wagner et al., 1999; Vibrans, 2011; Pruski 2014). It produces large amounts of wind-dispersed seeds (>5000 seeds per plant; Mejía et al., 1994) which is a feature facilitating the likelihood of spreading and colonizing new habitats. Currently, E. fosbergii is listed as invasive in Mexico, Central America, West Indies, and on several islands in the Pacific Ocean (see Distribution Table for details).


2021 ◽  
Author(s):  
Julissa Rojas-Sandoval ◽  
Pedro Acevedo-Rodríguez

Abstract C. madagascariensis is a fast-growing invasive woody vine. Plants can begin to reproduce after about 200 days and they can produce large amount of seeds which are rapidly dispersed by wind, floodwaters, or stuck to the fur of animals (Starr et al., 2003). Seeds can remain viable up to one year and studies have reported germination rates ranging from 90 to 95% (Starr et al., 2003; Vieira et al., 2004). C. madagascariensis has the ability to quickly spread along water courses, coastal forests, pastures, forest edges, and disturbed areas. The plant can form dense impenetrable thickets by climbing up trees and covering them, and may also displace and out-compete native vegetation.


2021 ◽  
Vol 13 (6) ◽  
pp. 18479-18489
Author(s):  
Prabhat Kiran Bhattarai ◽  
Basant Sharma ◽  
Anisha Neupane ◽  
Sunita Kunwar ◽  
Pratyush Dhungana

Bat research in Nepal is limited and most areas remain to be explored.  Sparse research has been conducted in the Banpale forest and to improve the understanding of bat diversity, an updated species checklist was prepared.  Trapping surveys using mist nets were conducted at four different locations in the forest from March to May 2018.  This survey identified 55 individuals belonging to eight species within eight genera and four families.  Trapping locations near less disturbed forest edges and water resources were found to have higher bat diversity compared to highly disturbed areas (e.g., landslides and logging areas).  With information from survey and secondary source, we conclude that Banpale forest harbours 10 of the 53 bat species found in Nepal.  We recommend adopting practices to conserve the forest from landslides and minimizing illegal logging to conserve bat forest habitats. 


2021 ◽  
Author(s):  
Julissa Rojas-Sandoval ◽  
Pedro Acevedo-Rodríguez

Abstract M. ceratonia is a fast-growing perennial multi-stemmed vine that is considered a weed in Puerto Rico (Vélez and Overbeek, 1950). The species is able to grow in a great range of habitats including fencelines, roadsides, pastures, brushy pastures, wooded drains, forest edges and openings in secondary forests. Consequently, it has the potential to spread much further than it has to date, both inside and outside its native range. Seeds are easily dispersed by the pods clinging to clothing or to the fur of animals, and they can remain viable for several years (Francis, 2000).


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.


2015 ◽  
Author(s):  
Piter K Boll ◽  
Ilana Rossi ◽  
Silvana V Amaral ◽  
Ana Leal-Zanchet

Invasive species establish successfully in new habitats especially due to their generalist diet and release of natural enemies. However, native species may also adapt to use new elements in their ecosystem. The planarian Endeavouria septemlineata, first recorded in Hawaii, was later registered in Australia and Brazil. Recently we found it in human-disturbed areas in southern Brazil and here we investigate its interactions with other invertebrates both in the field and in the laboratory. We observed the species in the field during collecting activities and maintained some specimens alive in small terraria in the laboratory, where we offered different invertebrate species as potential prey and also put them in contact with native land planarians in order to examine their interaction. Both in the field and in the laboratory, E. septemlineata showed a gregarious behavior and was found feeding on woodlice, millipedes, earwigs and gastropods. In the laboratory, specimens did not attack live prey, but immediately approached dead specimens, indicating a scavenging behavior. Four native land planarians of the genus Obama and two of the genus Paraba attacked and consumed E. septemlineata, which, after the beginning of the attack, tried to escape by tumbling or using autotomy. As a scavenger, E. septemlineata would impact the populations of species used as food, but could possibly exclude native scavengers by competition. On the other hand, its consumption by native land planarians may control its spread and thus reduce its impact on the ecosystems.


2021 ◽  
Author(s):  
Julissa Rojas-Sandoval ◽  
Pedro Acevedo-Rodríguez

Abstract G. physocarpus is a shrub, widely naturalized in tropical, subtropical and semiarid ecosystems. It commonly grows as a weed in waste places, disturbed sites, open woodlands, grasslands, wetlands, and along roadsides and it is also planted as an ornamental in gardens, yards and parks (Wagner et al., 1999; Motooka et al., 2003; Queensland Department of Primary Industries and Fisheries, 2011). In Hawaii and Australia, this species has been recorded invading active pastures and sugarcane plantations as well as coastal and dry forests (Motooka et al., 2003; Queensland Department of Primary Industries and Fisheries, 2011). Features such as high drought tolerance, fast-growing, weedy behaviour, and wind-dispersed seeds are factors facilitating the invasion of this species into new habitats. In addition, each plant produces large numbers of small seeds which are successfully dispersed by wind aided by the tuft of silky hairs attached to each seed (Notten, 2010). Currently, G. physocarpus is listed as invasive in Hawaii, French Polynesia, the Canary Islands, New Caledonia, China and Australia and as potentially invasive in Cuba, Jamaica, India and Italy (Oviedo Prieto et al., 2012; DAISIE, 2014; PIER, 2014; USDA-ARS, 2014).


2020 ◽  
Author(s):  
Julissa Rojas-Sandoval

Abstract Macrothelypteris torresiana is a perennial fern native to Asia, Madagascar, the Mascarene Islands and Oceania. It has been widely introduced across the Americas as an ornamental plant. It grows in disturbed areas including roadsides and forest edges and behaves as a weed. It spreads via spores in wind and water but can also spread via stolons and rhizomes in garden waste. Currently, M. torresiana is listed as invasive in Cuba and Brazil and may also be invasive in Hawaii where it is spreading. The impact of this species where it is invasive is largely unknown, but it is possible that its weedy and opportunistic nature results in competition with native species and alteration of successional patterns.


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