Alternanthera sessilis (sessile joyweed).

2021 ◽  
Author(s):  
Julissa Rojas-Sandoval ◽  
Pedro Acevedo-Rodríguez
Keyword(s):  
The United States ◽  
Alkaline Soils ◽  
Floodplain Wetlands ◽  
Invasive Weed ◽  
Ephemeral Pools ◽  
Disturbed Areas ◽  
The Pacific ◽  
Dry Conditions ◽  
Noxious Weed ◽  
Black Cotton Soils

Abstract A. sessilis is a pioneer species typically growing on disturbed areas and in wetland habitats, and regarded as a fast-growing highly invasive weed. It is adapted to grow on a range of soil types ranging from poor sandy or alkaline soils, to loam or black cotton soils. It is also able to grow in seasonally-waterlogged areas as well as in areas with extreme dry conditions (Holm et al., 1997). A. sessilis can be found invading floodplain wetlands, margins of rivers, streams, canals, ditches, ponds, reservoirs, tanks, marshes, swamps, wet low-lying ground, ephemeral pools, seasonal pans and damp forest. This species is also a weed in fields with sorghum, millet, Eleusine spp., maize, cotton, cassava, cereal crops, pastures, and vegetable farms (Gupta, 2014). Consequently, this species has been listed as invasive in India, South Africa, Namibia, Spain, Hawaii and many other islands in the Pacific Ocean (see distribution table for details). It is also listed as a noxious weed in the United States (USDA-NRCS, 2014).

The Biology of Invasive Alien Plants in Canada. 6. Berteroa incana (L.) DC

2006 ◽  
Vol 86 (4) ◽  
pp. 1297-1309 ◽  
Author(s):  
S. I. Warwick ◽  
A. Francis
Keyword(s):  
North America ◽  
The United States ◽  
Tree Plantations ◽  
Forage Crops ◽  
Invasive Weed ◽  
Weed Biology ◽  
Sandy Gravel ◽  
Dry Conditions ◽  
Winter Annual ◽  
Harmful Effects

The cruciferous weed Berteroa incana, hoary alyssum, has been known in temperate North America since the late 19th century, but has recently begun to spread aggressively in upland and dry areas in the Great Lakes and western foothills regions of both Canada and the United States. It is an annual, winter annual to short-lived perennial and is considered an invasive weed in turf, rangelands, pastures and forage crops, with harmful effects on horses an added concern. The species is most common on sandy gravel and poorer soils. It has recently i nvaded Christmas tree plantations in Michigan. Its prolific seed production, woody stems and deep taproot enable it to persist under dry conditions and to resist mechanical control; and it has virtually no natural enemies in North America. It can be partially controlled by herbicides in crops it has invaded, but herbicides are not generally used on rangelands, pastures, turf and natural and semi-natural areas, where it is now prevalent. Key words: Berteroa incana, hoary alyssum, bertéroa blanc, BEFIN, weed biology, invasive alien

scholarly journals Mottled Water Hyacinth Weevil Neochetina eichhorniae Warner (Insecta: Coleoptera: Curculionidae)

EDIS ◽  
2021 ◽  
Vol 2021 (1) ◽  
pp. 5
Author(s):  
Eutychus Kariuki ◽  
Carey Minteer
Keyword(s):  
United States ◽  
Water Hyacinth ◽  
Biological Control Agent ◽  
The United States ◽  
Control Agent ◽  
Broward County ◽  
Invasive Weed ◽  
Invasive Aquatic Plant ◽  
Neochetina Eichhorniae ◽  
Noxious Weed

Sometimes referred to as the ‘mottled water hyacinth weevil’, Neochetina eichhorniae Warner is a weevil that attacks the invasive, aquatic plant, water hyacinth, Eichhornia crassipes (Mart.) Solms. Water hyacinth is considered one of the most destructive plants in aquatic ecosystems in the United States and, as a result, is listed in both the federal noxious weed list and Florida’s list of prohibited aquatic plants. Neochetina eichhorniae is host specific and causes substantial damage to water hyacinth, making it a valuable biological control agent for this invasive weed in many parts of the world. The insect was first introduced into the United States from Argentina in 1972, when scientists released the insect in Broward County, Florida, to manage water hyacinth (Perkins 1973). Since then, the insect has been introduced in more than three dozen countries worldwide (Winston et al. 2014). Post-introduction studies indicate the insect substantially suppresses the growth of water hyacinth, significantly reducing biomass, flowers production, and water surface coverage (Grodowitz et al. 1991, Center et al. 1999, Tipping et al. 2014, Nesslage et al. 2016) and the need for herbicide applications (Haag 1986).

scholarly journals Crotalaria spectabilis (showy rattlepod).

2020 ◽  
Author(s):  
Julissa Rojas-Sandoval
Keyword(s):  
Agricultural Land ◽  
New Caledonia ◽  
The United States ◽  
Natural Habitats ◽  
Tropical Asia ◽  
The Pacific ◽  
The Pacific Ocean ◽  
Noxious Weed ◽  
Very High ◽  
Crotalaria Spectabilis

Abstract C. spectabilis is native to tropical Asia and has been widely introduced in many tropical countries around the world. It has escaped from cultivation and can now be found naturalized principally in open and disturbed sites. This species is a serious weed in agricultural land and natural habitats (Randall, 2012). The potential invasiveness of C. spectabilis is very high mainly because this species spreads predominantly as a contaminant in agricultural equipment, crop seeds, forages and hay (Maddox et al., 2011). In the United States, it is listed as a noxious weed in many Mid-South states (e.g., Arkansas), and it has spread rapidly throughout the Southeastern states where it is now considered an invasive species (Maddox et al., 2011; USDA-NRCS, 2015). C. spectabilis is also listed as invasive in Cuba, Australia, New Caledonia and many other islands in the Pacific Ocean (Oviedo Prieto et al., 2012; PIER, 2015; Weeds of Australia, 2015).

Petrels collected by Titian Ramsay Peale in the Pacific Ocean during the United States Exploring Expedition of 1838–1842

2008 ◽  
Vol 35 (1) ◽  
pp. 143-149 ◽  
Author(s):  
W. R. P. BOURNE
Keyword(s):  
United States ◽  
Pacific Ocean ◽  
The United States ◽  
Important Type ◽  
The Pacific ◽  
The Pacific Ocean

The report by Titian Ramsay Peale on birds encountered during the Wilkes Expedition was withdrawn for inaccuracy when few copies had been distributed, and re-written by John Cassin. A survey of the accounts of the petrels shows that this was not an improvement. Two important type localities for Procellaria brevipes and Thalassidroma lineata are probably wrong, and could be exchanged.

scholarly journals The use of mechanical restraint in Pacific Rim countries: an international epidemiological study

2020 ◽  
Vol 29 ◽  
Author(s):  
G. Newton-Howes ◽  
M. K. Savage ◽  
R. Arnold ◽  
T. Hasegawa ◽  
V. Staggs ◽  
...  
Keyword(s):  
United States ◽  
New Zealand ◽  
International Comparisons ◽  
The United States ◽  
Pacific Rim ◽  
Persons With Disabilities ◽  
Mechanical Restraint ◽  
The Pacific ◽  
Bed Days ◽  
Compare And Contrast

Abstract Aims The use of mechanical restraint is a challenging area for psychiatry. Although mechanical restraint remains accepted as standard practice in some regions, there are ethical, legal and medical reasons to minimise or abolish its use. These concerns have intensified following the Convention on the Rights of Persons with Disabilities. Despite national policies to reduce use, the reporting of mechanical restraint has been poor, hampering a reasonable understanding of the epidemiology of restraint. This paper aims to develop a consistent measure of mechanical restraint and compare the measure within and across countries in the Pacific Rim. Methods We used the publicly available data from four Pacific Rim countries (Australia, New Zealand, Japan and the United States) to compare and contrast the reported rates of mechanical restraint. Summary measures were computed so as to enable international comparisons. Variation within each jurisdiction was also analysed. Results International rates of mechanical restraint in 2017 varied from 0.03 (New Zealand) to 98.9 (Japan) restraint events per million population per day, a variation greater than 3000-fold. Restraint in Australia (0.17 events per million) and the United States (0.37 events per million) fell between these two extremes. Variation as measured by restraint events per 1000 bed-days was less extreme but still substantial. Within all four countries there was also significant variation in restraint across districts. Variation across time did not show a steady reduction in restraint in any country during the period for which data were available (starting from 2003 at the earliest). Conclusions Policies to reduce or abolish mechanical restraint do not appear to be effecting change. It is improbable that the variation in restraint within the four examined Pacific Rim countries is accountable for by psychopathology. Greater efforts at reporting, monitoring and carrying out interventions to achieve the stated aim of reducing restraint are urgently needed.

scholarly journals First record of Euxestonotus error (Hymenoptera: Platygastridae) in the Pacific Northwest, United States of America

2016 ◽  
Vol 148 (5) ◽  
pp. 616-618 ◽  
Author(s):  
E.R. Echegaray ◽  
R.N. Stougaard ◽  
B. Bohannon
Keyword(s):  
United States ◽  
New York ◽  
Pacific Northwest ◽  
United States Of America ◽  
First Record ◽  
The United States ◽  
Sitodiplosis Mosellana ◽  
Wheat Midge ◽  
The Pacific ◽  
Northwestern Montana

AbstractEuxestonotus error (Fitch) (Hymenoptera: Platygastridae) is considered part of the natural enemy complex of the wheat midge Sitodiplosis mosellana (Géhin) (Diptera: Cecidomyiidae). Although previously reported in the United States of America, there is no record for this species outside the state of New York since 1865. A survey conducted in the summer of 2015 revealed that E. error is present in northwestern Montana and is likely playing a role in the suppression of wheat midge populations.

Mexico-United States Convention for the Establishment of an International Commission for the Scientific Investigation of Tuna

1951 ◽  
Vol 45 (S2) ◽  
pp. 51-57
Keyword(s):  
United States ◽  
Pacific Ocean ◽  
United States Of America ◽  
The United States ◽  
Scientific Investigation ◽  
International Commission ◽  
The Pacific ◽  
The Pacific Ocean

The United States of America and the United Mexican States consideringtheir respective interests in maintaining the populations of certain tuna and tuna-like fishes in the waters of the Pacific Ocean off the coasts of both countries.

Sign in / Sign up

Export Citation Format

Share Document