Implementation And Status Of Biological Control Of The Hemlock Woolly Adelgid
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Implementation And Status Of Biological Control Of The Hemlock Woolly Adelgid
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Author :
language : en
Publisher:
Release Date : 2011
Implementation And Status Of Biological Control Of The Hemlock Woolly Adelgid written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Eastern hemlock categories.
Biological Control Of Hemlock Woolly Adelgid
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Author :
language : en
Publisher:
Release Date : 2004
Biological Control Of Hemlock Woolly Adelgid written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Hemlock woolly adelgid categories.
Biological Control Of Hemlock Woolly Adelgid
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Author :
language : en
Publisher:
Release Date : 2004*
Biological Control Of Hemlock Woolly Adelgid written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004* with Hemlock woolly adelgid categories.
Integrating Chemical And Biological Control Of The Hemlock Woolly Adelgid
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Author : Albert E. Mayfield (III)
language : en
Publisher:
Release Date : 2020
Integrating Chemical And Biological Control Of The Hemlock Woolly Adelgid written by Albert E. Mayfield (III) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with Hemlock woolly adelgid categories.
Biological Control Of Hemlock Woolly Adelgid In The Eastern United States
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Author : Mark McClure
language : en
Publisher:
Release Date : 2001
Biological Control Of Hemlock Woolly Adelgid In The Eastern United States written by Mark McClure and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.
Hemlock Woolly Adelgid Biological Control
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Author :
language : en
Publisher:
Release Date : 2003
Hemlock Woolly Adelgid Biological Control written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
Integrating Biological Control Into Conservation Practice
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Author : Roy van Driesche
language : en
Publisher: John Wiley & Sons
Release Date : 2016-05-17
Integrating Biological Control Into Conservation Practice written by Roy van Driesche and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-05-17 with Science categories.
Invasive species have a critical and growing effect upon natural areas. They can modify, degrade, or destroy wildland ecosystem structure and function, and reduce native biodiversity. Landscape-level solutions are needed to address these problems. Conservation biologists seek to limit such damage and restore ecosystems using a variety of approaches. One such approach is biological control: the deliberate importation and establishment of specialized natural enemies, which can address invasive species problems and which should be considered as a possible component of restoration. Biological control can be an effective tool against many invasive insects and plants but it has rarely been successfully employed against other groups. Safety is of paramount concern and requires that the natural enemies used be specialized and that targeted pests be drivers of ecological degradation. While modern approaches allow species to be selected with a high level of security, some risks do remain. However, as in all species introductions, these should be viewed in the context of the risk of failing to reduce the impact of the invasive species. This unique book identifies the balance among these factors to show how biological control can be integrated into ecosystem restoration as practiced by conservation biologists. Jointly developed by conservation biologists and biological control scientists, it contains chapters on matching tools to management goals; tools in action; measuring and evaluating ecological outcomes of biological control introductions; managing conflict over biological control; and includes case studies as well as an ethical framework for integrating biological control and conservation practice. Integrating Biological Control into Conservation Practice is suitable for graduate courses in invasive species management and biological control, as well as for research scientists in government and non-profit conservation organizations.
Introduced Biological Control Agents For Hemlock Woolly Adelgid Hwa
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Author : Hugh E. Conway
language : en
Publisher:
Release Date : 2004
Introduced Biological Control Agents For Hemlock Woolly Adelgid Hwa written by Hugh E. Conway and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Hemlock woolly adelgid categories.
Assessment Of Factors Affecting Establishment Of Biological Control Agents Of Hemlock Woolly Adelgid On Eastern Hemlock In The Great Smoky Mountains National Park
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Author : Abdul Hakeem
language : en
Publisher:
Release Date : 2013
Assessment Of Factors Affecting Establishment Of Biological Control Agents Of Hemlock Woolly Adelgid On Eastern Hemlock In The Great Smoky Mountains National Park written by Abdul Hakeem and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Hemlock woolly adelgid categories.
Eastern hemlock in the Great Smoky Mountains National Park (GRSM) is threatened by hemlock woolly adelgid (HWA), Adelges tsugae Annand (Hemiptera: Adelgidae). To manage this invasive pest in GRSM, ca. 550,000 Sasajiscymnus tsugae (Sasaji and McClure) (Coleoptera: Coccinellidae) and 7,857 Laricobius nigrinus Fender (Coleoptera: Derodontidae) have been released. Limited information is available on their establishment in GRSM. To fill this gap, a study was initiated to assess establishment of these predators and their impact on hemlock health. To determine factors affecting establishment of these predators, 65 release sites were sampled from 2008 to 2012. Several factors were evaluated for their association with establishment and recovery of S. tsugae. Predatory beetle release information, topographic features, and temperature data were obtained from GRSM personnel. These factors were evaluated using stepwise logistic regression and Pearson correlation. High resolution digital imagery was used in conjunction with field-conducted tree-health surveys to test association between S. tsugae and tree health. S. tsugae were recovered from 13 of 65 sites (20%); recovery was significantly associated with older release sites which indicates that S. tsugae may require more time to reach readily detectable levels. Regression analysis indicated that establishment was positively associated with the average maximum temperature seven days following release and elevation. Several significant correlations were found between presence of S. tsugae, and year of release, season of release, and temperature variables. These results indicate that S. tsugae should be monitored for establishment for at least five years following releases to enhance knowledge of establishment. Coexistence of three predatory beetles, S. tsugae, L. nigrinus and L. rubidus, was observed on the same hemlock trees. Significant differences between normalized difference vegetation index values and S. tsugae presence was observed. For understory and overstory hemlock, percent crown transparency, percent live crown, and percent branch dieback was also significant with presence of S. tsugae. Coexistence of S. tsugae and L. nigrinus on eastern hemlock may provide prolonged feeding on HWA. Predictive models would assist land managers in selecting appropriate times and sites for future releases. Application of digital imagery could be used to evaluate other natural enemies in forest landscapes.
Biological Control Host Resistance And Vegetative Propagation
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Author : Robert Miller Jetton
language : en
Publisher:
Release Date : 2008
Biological Control Host Resistance And Vegetative Propagation written by Robert Miller Jetton and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
Keywords: biological control, Adelges tsugae, host resistance, hemlock woolly adelgid.