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 Download
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Author:
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ISBN:
Category : Bitter Lake National Wildlife Refuge (N.M.)
Languages : en
Pages : 11
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Author:
Publisher:
ISBN:
Category : Bitter Lake National Wildlife Refuge (N.M.)
Languages : en
Pages : 11
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Author: Thomas William Robinson
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 22
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Author: Robert Richard
Publisher:
ISBN:
Category : Tamarisks
Languages : en
Pages : 34
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Author: Charles Conrad Geraci
Publisher:
ISBN:
Category : Invasive plants
Languages : en
Pages : 180
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Author: C. Jack DeLoach
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Alissa Marie Berro
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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.
Author: Etats-Unis. Federal highway administration
Publisher:
ISBN: 9781886679283
Category : Invasive plants
Languages : en
Pages : 394
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Author: David Hussey
Publisher: John Wiley & Sons
ISBN: 0471965898
Category : Business & Economics
Languages : en
Pages : 308
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The implementation of appropriate strategies remains one of the most difficult areas of management. Considerable thought, energy and resources is given over to devising a strategic plan; and it is to the fine detail of the plan that attention turns when things go wrong. The plan, rather than the implementation comes in for scrutiny, because it is less problematic to analyse. Perhaps this is because, whereas the plan can be devised under pollution-free, almost laboratory conditions, the working out of the plan takes place in the real world infected with real world variables. But the whole point of a strategy is that it will be implemented and implemented successfully. Much has been written on change management and transformational leadership all very relevant to strategy implementation but there are comparatively few books which look at the implementation process as a whole. The Implementation Challenge aims to link the numerous concepts and approaches to the subject but recognizes the impact on implementation of the organization as it lives and breathes. From the work of leading thinkers in the field of strategic management, David Hussey has selected contributions specifically focusing on the theme of implementation. Some of the work is to be found in Strategic Change; this, together with new material and four major case studies, makes The Implementation Challenge thoroughly up to date and coherent. It is intended to be thought provoking, and to give practical aid to those involved with achieving successful implementation of their organization s strategic plans and thinking.
Author: M. G. Lockley
Publisher: CUP Archive
ISBN: 9780521425988
Category : Nature
Languages : en
Pages : 268
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A complete guide to dinosaur tracking. A popular science book on dinosaur footprints and what they reveal about dinosaurs and their habitats.
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ISBN:
Category :
Languages : en
Pages : 516
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