Remote Sensing Assessment of Widespread Saltcedar (Tamarix Spp.) Infestation and Biological Control in Northwest Nevada

Remote Sensing Assessment of Widespread Saltcedar (Tamarix Spp.) Infestation and Biological Control in Northwest Nevada PDF Author: Charles Conrad Geraci
Publisher:
ISBN:
Category : Invasive plants
Languages : en
Pages : 180

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Remote Sensing Methods for Use in the Adaptive Management of Saltcedar (Tamarix Spp.) at the Bosque Del Apache National Wildlife Refuge

Remote Sensing Methods for Use in the Adaptive Management of Saltcedar (Tamarix Spp.) at the Bosque Del Apache National Wildlife Refuge PDF Author: Dennis Charles McCarville
Publisher:
ISBN:
Category : Aerial photography in ecology
Languages : en
Pages : 236

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Classical Biological Control of Saltcedar (Tamarix Spp.) in Oklahoma

Classical Biological Control of Saltcedar (Tamarix Spp.) in Oklahoma PDF Author: Alissa Marie Berro
Publisher:
ISBN:
Category :
Languages : en
Pages : 99

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Saltcedar (Tamarix spp.) covers nearly 86,000 acres in Oklahoma mostly in the western third of the state. A beetle, Diorhabda carinulata (Coleoptera: Chrysomellidae) has been released in nine western states as a biological control agent. The U.S. Fish and Wildlife Service asked that we attempt to introduce the beetle into the Great Salt Plains Wildlife Refuge in Oklahoma, which is infested with saltcedar. We surveyed three saltcedar stands (Lake site, Highway site, Marsh site) from 2009-2010 at the refuge that were selected for their unique ecological characteristics. Our objectives were to compare two sampling methods (vacuum and beat stick) for their capability to assess the diversity of insect predators in different saltcedar-dominated habitats and identify potential arboreal predators of D. carinulata. The results of the survey indicated that several arthropod predators were abundant enough to potentially effect the establishment of D. carinulata. Comparison of insect assemblages between sampling methods revealed that the vacuum sampling technique recovered more overall taxa but neither method recovered all taxa present highlighting the importance of employing multiple sampling methods. The most common insect predators collected were Coccinella septempunctata (Coleoptera: Coccinellidae) in 2010 vacuum samples and Zelus tetracanthus (Hemiptera: Reduviidae) in 2009 vacuum and 2010 beat stick samples. Diversity indices (Shannon Diversity Index and Simpson Diversity Index) indicated that the Lake Site habitat was consistently more species rich than the Highway and Marsh Site. Two coccinellids, C. septempunctata and Hippodamia convergens, were identified as common predators present. We selected these two species for additional lab studies designed to evaluate the suitability of eggs and larvae of D. carinulata as a food source for the adults and larvae of both coccinellids. The studies revealed that D. carinulata is neither a suitable nor an acceptable food source for larval stages of both beetles. Adult lady beetles of both species attacked eggs and first instar D. carinulata larvae, but only one attack was recorded on a D. carinulata life stage beyond first instar. These results indicate that adult C. septempunctata and H. convergens could prove to be a limited predator of D. carinulata eggs and first instar larvae.

Guide to Geography Programs in the Americas

Guide to Geography Programs in the Americas PDF Author:
Publisher:
ISBN:
Category : Geography
Languages : en
Pages : 708

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Sourcebook on Remote Sensing and Biodiversity Indicators

Sourcebook on Remote Sensing and Biodiversity Indicators PDF Author: Holly Strand
Publisher:
ISBN:
Category : Biodiversity
Languages : en
Pages : 208

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"This sourcebook is intended to assist environmental managers and others who work with indicators in pursuing appropriate methods for indicator testing and production, and to offer some guidance to those responsible for the interpretation of indicators and implementation of decisions based on them. Upon reading this document, technical advisers, environmental policy makers, and remote sensing lab directors and project managers should be able to identify specific, relevant uses of remote sensing data for biodiversity monitoring and indicator development related to the CBD." --p. 8.

Proposed Program for Control of Saltcedar (Tamarix Spp.) in Fourteen States

Proposed Program for Control of Saltcedar (Tamarix Spp.) in Fourteen States PDF Author: Robert Richard
Publisher:
ISBN:
Category : Tamarisks
Languages : en
Pages : 34

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Environmental Assessment for Biological Control of the Invasive Tree Saltcedar (tamarix Chinensis) on Bitter Lake National Wildlife Refuge on the Pecos River (New Mexico).

Environmental Assessment for Biological Control of the Invasive Tree Saltcedar (tamarix Chinensis) on Bitter Lake National Wildlife Refuge on the Pecos River (New Mexico). PDF Author:
Publisher:
ISBN:
Category : Bitter Lake National Wildlife Refuge (N.M.)
Languages : en
Pages : 11

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A Comparative Study

A Comparative Study PDF Author: Janice Pachorek
Publisher:
ISBN:
Category : Tamarisks
Languages : en
Pages : 58

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The invasion by non-native saltcedar (Tamarix L. spp.) has caused enormous damage on native plant and animal communities, especially in riparian ecosystems in areas of the western United States. The main methods of control currently used, mechanical, chemical and manual, have proven to be enormously expensive. In the last few years, biological control using an introduced leaf-eating beetle, Diorhabda elongata, has shown a very high potential for success. Success stories of biological control include saltcedar stands along the Humboldt River in Lovelock, Nevada where this beetle defoliated about 5,000 acres of saltcedar. The Colorado Noxious Weed Act of 1996, the State Weed Law and two bills passed by the 108th Congress have enabled county, city and state governments to utilize and implement management programs to target saltcedar. The intent of this research was to monitor and examine the effects of the chemical and mechanical treatments of saltcedar in Fremont County, Colorado. The results of this research indicate that chemical control has had a significant impact on killing saltcedar from pre-treatment status to post-one-year and post-two-year status. It was found that the Hydroaxe control method cleared areas of stands of saltcedar but new growth appeared form below the cut stump of the plant. Protocol for herbicide control, according to the manufacturer's label, recommends that treated areas should be left undisturbed for approximately three years after application.

Harmful Non-indigenous Species in the United States

Harmful Non-indigenous Species in the United States PDF Author:
Publisher:
ISBN:
Category : Competition (Biology)
Languages : en
Pages : 76

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Invasive Species in Forests and Rangelands of the United States

Invasive Species in Forests and Rangelands of the United States PDF Author: Therese M. Poland
Publisher: Springer Nature
ISBN: 3030453677
Category : Science
Languages : en
Pages : 455

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Book Description
This open access book describes the serious threat of invasive species to native ecosystems. Invasive species have caused and will continue to cause enormous ecological and economic damage with ever increasing world trade. This multi-disciplinary book, written by over 100 national experts, presents the latest research on a wide range of natural science and social science fields that explore the ecology, impacts, and practical tools for management of invasive species. It covers species of all taxonomic groups from insects and pathogens, to plants, vertebrates, and aquatic organisms that impact a diversity of habitats in forests, rangelands and grasslands of the United States. It is well-illustrated, provides summaries of the most important invasive species and issues impacting all regions of the country, and includes a comprehensive primary reference list for each topic. This scientific synthesis provides the cultural, economic, scientific and social context for addressing environmental challenges posed by invasive species and will be a valuable resource for scholars, policy makers, natural resource managers and practitioners.