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You searched for subject:(ash mortality). Showing records 1 – 2 of 2 total matches.

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1. Hunnicutt, Rachel E. Emerald Ash Borer Adult Feeding Behavior and Ash Tree Management Decision Modeling: Relationships Between Pest and Host Tolerance Gradients.

Degree: 2013, IPFW

Emerald ash borer (Agrilus planipennis Fairmaire, Buprestidae) is an invasive pest, introduced from Asia that attacks North American ash trees (Fraxinus spp.). Trees often die from attack by emerald ash borer, whether they are growing vigorously or not, within a few years. Some ash do not succumb as easily to attack as other individuals, despite being within the same species. After emergence, both adult emerald ash borer males and females require maturation feeding, which may assist in suitable host finding for subsequent oviposition. I compared the amount of leaf area consumed by emerald ash borer adults between leaves from trees identified as low tolerant and high tolerant to attack. Freshly collected green ash (F. pennsylvanica) leaves were exposed to caged adult pairs (F:F, F:M, and M:M). There was no significant difference of leaf area fed on compared between the three categories of feeding pairs. However, when the data were pooled, significantly more low tolerant leaf area was consumed over high tolerant. This result suggests that emerald ash borer adults feed preferentially on low tolerant leaves. Street and park ash tree decline and eventual mortality is a result of high density emerald ash borer infestation and results in costs associated with removing hazards. Since no emerald ash borer control techniques are effective, managing trees as they decline is necessary. I developed seven management decision models to predict survival of trees within Huron-Clinton Metroparks in Metro-Detroit beyond 3 years based on assessed signs and symptoms of emerald ash borer attack. Initial success of model predictability was then assessed using tree data from Fort Wayne City Parks. Simplified models using vigor and dieback were able to predict mortality/survival approximately 54% of the time. Of the unsuccessful predictions, over 90% were in cases of predicted survival, but mortality occurred in reality. This failure in predictability success suggests other tree characteristics are likely more important than the chosen signs and symptoms of emerald ash borer attack in determining survival and mortality (i.e. growth characteristics and signs and symptoms that were not used).

Subjects/Keywords: entomology; forest management; emerald ash borer; pest management; decision modeling; pest tolerance gradients; host tolerance gradients; ash trees; invasive species; Agrilus planipennis Fairmaire; coleoptra; Buprestidae; Fraxinus spp.; ash mortality; trapping methods; ash tree attack symptons; ash tree assessment; emerald ash borer management; feeding behavior; botany; zoology; Animal Sciences; Biology; Botany; Entomology; Forest Biology; Forest Management; Forest Sciences; Life Sciences; Other Animal Sciences; Other Forestry and Forest Sciences; Other Life Sciences; Other Plant Sciences; Plant Biology; Plant Sciences; Zoology

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APA (6th Edition):

Hunnicutt, R. E. (2013). Emerald Ash Borer Adult Feeding Behavior and Ash Tree Management Decision Modeling: Relationships Between Pest and Host Tolerance Gradients. (Masters Thesis). IPFW. Retrieved from http://opus.ipfw.edu/masters_theses/34

Chicago Manual of Style (16th Edition):

Hunnicutt, Rachel E. “Emerald Ash Borer Adult Feeding Behavior and Ash Tree Management Decision Modeling: Relationships Between Pest and Host Tolerance Gradients.” 2013. Masters Thesis, IPFW. Accessed December 13, 2019. http://opus.ipfw.edu/masters_theses/34.

MLA Handbook (7th Edition):

Hunnicutt, Rachel E. “Emerald Ash Borer Adult Feeding Behavior and Ash Tree Management Decision Modeling: Relationships Between Pest and Host Tolerance Gradients.” 2013. Web. 13 Dec 2019.

Vancouver:

Hunnicutt RE. Emerald Ash Borer Adult Feeding Behavior and Ash Tree Management Decision Modeling: Relationships Between Pest and Host Tolerance Gradients. [Internet] [Masters thesis]. IPFW; 2013. [cited 2019 Dec 13]. Available from: http://opus.ipfw.edu/masters_theses/34.

Council of Science Editors:

Hunnicutt RE. Emerald Ash Borer Adult Feeding Behavior and Ash Tree Management Decision Modeling: Relationships Between Pest and Host Tolerance Gradients. [Masters Thesis]. IPFW; 2013. Available from: http://opus.ipfw.edu/masters_theses/34

2. Maguire, Evin P. VOLCANIC ASH AS A CAUSE FOR MASS KILLS OF DECAPOD CRUSTACEANS DURING THE MIOCENE IN NORTHERN PATAGONIA.

Degree: MS, College of Arts and Sciences / Department of Geology, 2015, Kent State University

Five localities within the Puerto Madryn Formation on Peninsula Valdes, Chubut Province, Argentina were investigated in order to assess the effects of volcanic ash on shallow marine communities during the early-late Miocene (Tortonian). All five localities expose shallow marine deposits, and contain invertebrate fossils including abundant decapod crustaceans. Sediments and fossils were analyzed using multiple geochemical and visual methods including scanning electron microscopy (SEM), electron dispersive spectroscopy (EDS), X-ray diffraction spectroscopy (XRD), petrographic microscopy, and reflected light microscopy. The sediments uniformly contain a high percentage of very fine volcanic ash. Three previously unstudied localities including two paleosurfaces and a stratigraphic section which record a single mass mortality event were documented. Two paleosurfaces described by Casadio et al. (2005) were revisited in order to assess the cause of death of the fossil assemblages at those sites. The crustaceans are interpreted to have been the victims of acute respiratory failure due to the introduction of volcanic ash to the branchial chamber. Advisors/Committee Members: Feldmann, Rodney (Advisor).

Subjects/Keywords: Paleontology; Paleoecology; Geology; Volcanic ash; Decapods; Miocene; Patagonia; mass mortality; Valdes Peninsula; Puerto Madryn; Argentina; fossils

…Argentina were investigated in order to assess the effects of volcanic ash on shallow marine… …microscopy. The sediments uniformly contain a high percentage of very fine volcanic ash. Three… …record a single mass mortality event were documented. Two paleosurfaces described by Casadío et… …respiratory failure due to the introduction of volcanic ash to the branchial chamber. viii iv… …x29;. Crawford et al. (2008), described a mass mortality event involving decapods… 

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Maguire, E. P. (2015). VOLCANIC ASH AS A CAUSE FOR MASS KILLS OF DECAPOD CRUSTACEANS DURING THE MIOCENE IN NORTHERN PATAGONIA. (Masters Thesis). Kent State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=kent1443446030

Chicago Manual of Style (16th Edition):

Maguire, Evin P. “VOLCANIC ASH AS A CAUSE FOR MASS KILLS OF DECAPOD CRUSTACEANS DURING THE MIOCENE IN NORTHERN PATAGONIA.” 2015. Masters Thesis, Kent State University. Accessed December 13, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=kent1443446030.

MLA Handbook (7th Edition):

Maguire, Evin P. “VOLCANIC ASH AS A CAUSE FOR MASS KILLS OF DECAPOD CRUSTACEANS DURING THE MIOCENE IN NORTHERN PATAGONIA.” 2015. Web. 13 Dec 2019.

Vancouver:

Maguire EP. VOLCANIC ASH AS A CAUSE FOR MASS KILLS OF DECAPOD CRUSTACEANS DURING THE MIOCENE IN NORTHERN PATAGONIA. [Internet] [Masters thesis]. Kent State University; 2015. [cited 2019 Dec 13]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=kent1443446030.

Council of Science Editors:

Maguire EP. VOLCANIC ASH AS A CAUSE FOR MASS KILLS OF DECAPOD CRUSTACEANS DURING THE MIOCENE IN NORTHERN PATAGONIA. [Masters Thesis]. Kent State University; 2015. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=kent1443446030

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