TEXASINVASIVES.ORG is a product of the Pulling Together Initiative (PTI), a partnership to manage non-native invasive plants and animals. The PTI provides information about identification and management of invasive plants, establishes locations for invasive plant demonstration areas, and, through a statewide conference, facilitates information sharing about non-native invasive plants. The website provides invasive species news, information on the 2009 conference on Invasive Species of Texas, information on Invaders of Texas Citizen Science program, databased information, publications, and links to other sites.
* Invasive Species of Texas. Union of Concerned Scientists, 2002.
-What’s Happening in Texas - A Problem on the Upswing
-How Do We Bring Invasive Species to Texas?
-How Much Do Invasives Cost Texans?
-What’s At Stake? - Special Landscapes, Habitats, & Species of Texas
-The Worst of the Worst
-Finding Solutions: Who Deals With Invasive Species in Texas?
-Invasive Species in Texas
Do you want to help slow down the spread of harmful invasive species and reduce their ecological and economic damage? The first step is to locate where invaders have arrived and get that information to those who can do something about it. Citizen scientists are volunteers who receive expert training to identify and track important invaders in our area.
A web-based field guide, covering 42 species, for homeowners, land managers, and gardening enthusiasts living in the Lower Galveston Bay Watershed. Included are color photos and physical descriptions of each species for identification, preferred habitats, geographic distribution, reproduction and growth characteristics, pathways of introduction, methods of control, and native plant alternatives to be found at or requested from home gardening centers.
Many useful links for identification of Texas weeds. Lots of photographs, with related links and publications. From the Texas Weed Information Group at Texas A&M University.
All specimens from Texas in the University of Texas herbarium are databased and included. Extremely useful for an overview of the range of all species occurring in the state (native and non-native). The Plant Resources Center, University of Texas. This and the Invaders of Texas Database are the only two online resources that provide documented locality information for the plants of Texas.
An excellent resource, with lots of detailed photos and original commentary, on 74 woody invasives known to be “naturalized” in Arkansas, 30 known to be “spontaneous,” and 18 more with the potential to become spontaneous or naturalized there. Highly useful for Texans. Created and often updated by Brett Serviss at Henderson State University in Arkadelphia.
A Field Guide for Identification and Control
J. H. Miller. 2003. USDA Forest Service, Southern Research Station
An excellent resource for “information on accurate identification and effective control of the 33 plants or groups that are invading the forests of the 13 Southern States.” All online.
National perspective and data -- excellent photos, descriptions, and summaries of biology for many non-native species, with good links and related publications. EDDMapS provides up-to-date county-level distribution maps based on data from a variety of sources. The Center for Invasive Species and Ecosystem Health -- a joint project of The University of Georgia's Bugwood Network, USDA Forest Service, and USDA APHIS PPQ, coordinated by The Nature Conservancy.
A set of links at the USDA PLANTS web site.
390 non-native plant species are listed here for the state. "Since publication of the first state flora, the number of alien plants has increased from 136 in 1915 to 390 in 2000." G.W. Cox. 2001. The New Mexico Botanist 17:1-7.
* Non-native species for Oklahoma, Arkansas, and Louisiana.
Under development in each of these states.
* Malezas de Mexico (Weeds of Mexico) http://www.conabio.gob.mx/malezasdemexico/2inicio/home-malezas-mexico.htm
This site aims to help both botanists and non-botanists identify Mexican plants of disturbed places (i.e. weeds) and to find information about them. We hope it will eventually contain:
* good quality, vouchered photographs of the approximately 3000 weed species estimated for Mexico;
* descriptions, conventional and interactive keys, and other support for the identification of these plants;
* a summary of useful information on the species in a blog-like fact sheet, including a guide to reliable and relevant sites on the net;
* an opportunity for information exchange and collaboration between interested people, both scientists and laypersons.
At present the site contains photos and factsheets for over 700 species, mainly from the south-center of the country. New species will be added twice or three times a year.
Several very significant publications on invasive species in Mexico have been published.
* The Weeds of Mexico website, two years after its first publication [El sitio web Malezas de México a dos años de su primera publicación].
“The Spanish-language Weeds of Mexico website project was initiated in 2000. The first version was published in April 2006 at www.malezasdemexico. net with photographs and factsheets for 450 species; another 400 species had followed by October 2007. Today, the site receives about 200 pageviews/species/ month (the large and multilingual site Fishbase has about 800 pageviews/species/month). The distribution of the pageviews shows that content (number of species in website/per family/level of coverage) drives use, together with placement in Google, and time. A cost-benefit analysis under Mexican conditions, considering only time saved for information procurement, shows an amortization in terms of public benefit within 1–2 years.”
* The alien flowering plants of Mexico. 2004. Villaseñor, J.L. and F.J. Espinosa-García. Diversity and Distributions 10: 113-123.
* Geographical patterns in native and exotic weeds of Mexico. 2004. Espinosa-García, F.J., J.L. Villaseñor, and H. Vibrans. Weed Technology 18: 1552-1558 Suppl. S.
An overview of information about weeds in Texas and the available biological control management programs. The focus of the site is to identify each weed, provide history and research background on it, and present the status of biological control programs. From the Dept. of Entomology, Texas A&M University.
Useful information from TP&WD on managing aquatic vegetation, including lots of non-natives. “Texas Parks and Wildlife Department focuses on stands of plants that directly affect the health and recreational use of those resources and works with other organizations to develop treatment measures that minimize harm to the environment.”
A brief commentary (undated) on the National Aquatic Invasive Species Act (NAISA, Aug 2002) as it relates to Texas. From the Union of Concerned Scientists.
Last update: 5 Jan 2010