MODELING NORTHERN GOSHAWK (ACCIPITER GENTILIS) NESTING HABITAT ON THE LEWIS AND CLARK NATIONAL FOREST USING EIGENVECTOR FILTERS TO ACCOUNT FOR SPATIAL AUTOCORRELATION
Habitat suitability modeling has become a valuable tool for wildlife managers to identify areas of suitable habitats for management and conservation needs. The Northern goshawk (Accipiter gentilis) has been the focus of many modeling efforts, however, the current models guiding goshawk management on...
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ftunivmontana:oai:scholarworks.umt.edu:etd-5381 2023-07-16T03:51:09+02:00 MODELING NORTHERN GOSHAWK (ACCIPITER GENTILIS) NESTING HABITAT ON THE LEWIS AND CLARK NATIONAL FOREST USING EIGENVECTOR FILTERS TO ACCOUNT FOR SPATIAL AUTOCORRELATION Lehr, Morganne Marie 2014-01-01T08:00:00Z application/pdf https://scholarworks.umt.edu/etd/4355 https://scholarworks.umt.edu/context/etd/article/5381/viewcontent/Lehr_Morganne_FinalThesis.pdf unknown University of Montana https://scholarworks.umt.edu/etd/4355 https://scholarworks.umt.edu/context/etd/article/5381/viewcontent/Lehr_Morganne_FinalThesis.pdf Graduate Student Theses, Dissertations, & Professional Papers Spatial Eigenvector Mapping Spatial Autocorrelation Northern Goshawk Maxent Habitat Suitability Modeling thesis 2014 ftunivmontana 2023-06-27T22:46:11Z Habitat suitability modeling has become a valuable tool for wildlife managers to identify areas of suitable habitats for management and conservation needs. The Northern goshawk (Accipiter gentilis) has been the focus of many modeling efforts, however, the current models guiding goshawk management on the Lewis and Clark National Forest may not fully capture the unique habitat characteristics that the goshawk is actually selecting for nesting habitat. Therefore, the first objective of this study was to explore the use of Maxent for modeling suitable goshawk nesting habitat on the Lewis and Clark National Forest in central Montana. However, goshawk territoriality and their use of alternate nest locations creates, spatial autocorrelation between the nest locations (nest locations that occur close to one another are not independent) and can complicate the development of a habitat suitability model. Spatial autocorrelation can have drastic effects on model prediction and can lead to false conclusions about ecological relationships, but when accounted for can lead to insights that may have been otherwise overlooked. As a result, this study also explored the use of eigenvector filters as additional explanatory variables to assist in “filtering” out the effects of spatial autocorrelation from the modeling effort. Furthermore, this study evaluated the difference in model outputs using different resampling methods (bootstrap and cross-validation) and number of variables to determine the differences between models. The results of the study showed that the use of eigenvector filters not only improved model performance and reduced commission error, but created more precise predictions of suitable habitat. Furthermore, this study also found that using bootstrap methods and all biologically relevant environmental variables (with the additional of eigenvector filters) provided the best overall model. However, wildlife managers should closely review the methods and results provided in this study and choose the model that best ... Thesis Accipiter gentilis Northern Goshawk University of Montana: ScholarWorks |
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University of Montana: ScholarWorks |
op_collection_id |
ftunivmontana |
language |
unknown |
topic |
Spatial Eigenvector Mapping Spatial Autocorrelation Northern Goshawk Maxent Habitat Suitability Modeling |
spellingShingle |
Spatial Eigenvector Mapping Spatial Autocorrelation Northern Goshawk Maxent Habitat Suitability Modeling Lehr, Morganne Marie MODELING NORTHERN GOSHAWK (ACCIPITER GENTILIS) NESTING HABITAT ON THE LEWIS AND CLARK NATIONAL FOREST USING EIGENVECTOR FILTERS TO ACCOUNT FOR SPATIAL AUTOCORRELATION |
topic_facet |
Spatial Eigenvector Mapping Spatial Autocorrelation Northern Goshawk Maxent Habitat Suitability Modeling |
description |
Habitat suitability modeling has become a valuable tool for wildlife managers to identify areas of suitable habitats for management and conservation needs. The Northern goshawk (Accipiter gentilis) has been the focus of many modeling efforts, however, the current models guiding goshawk management on the Lewis and Clark National Forest may not fully capture the unique habitat characteristics that the goshawk is actually selecting for nesting habitat. Therefore, the first objective of this study was to explore the use of Maxent for modeling suitable goshawk nesting habitat on the Lewis and Clark National Forest in central Montana. However, goshawk territoriality and their use of alternate nest locations creates, spatial autocorrelation between the nest locations (nest locations that occur close to one another are not independent) and can complicate the development of a habitat suitability model. Spatial autocorrelation can have drastic effects on model prediction and can lead to false conclusions about ecological relationships, but when accounted for can lead to insights that may have been otherwise overlooked. As a result, this study also explored the use of eigenvector filters as additional explanatory variables to assist in “filtering” out the effects of spatial autocorrelation from the modeling effort. Furthermore, this study evaluated the difference in model outputs using different resampling methods (bootstrap and cross-validation) and number of variables to determine the differences between models. The results of the study showed that the use of eigenvector filters not only improved model performance and reduced commission error, but created more precise predictions of suitable habitat. Furthermore, this study also found that using bootstrap methods and all biologically relevant environmental variables (with the additional of eigenvector filters) provided the best overall model. However, wildlife managers should closely review the methods and results provided in this study and choose the model that best ... |
format |
Thesis |
author |
Lehr, Morganne Marie |
author_facet |
Lehr, Morganne Marie |
author_sort |
Lehr, Morganne Marie |
title |
MODELING NORTHERN GOSHAWK (ACCIPITER GENTILIS) NESTING HABITAT ON THE LEWIS AND CLARK NATIONAL FOREST USING EIGENVECTOR FILTERS TO ACCOUNT FOR SPATIAL AUTOCORRELATION |
title_short |
MODELING NORTHERN GOSHAWK (ACCIPITER GENTILIS) NESTING HABITAT ON THE LEWIS AND CLARK NATIONAL FOREST USING EIGENVECTOR FILTERS TO ACCOUNT FOR SPATIAL AUTOCORRELATION |
title_full |
MODELING NORTHERN GOSHAWK (ACCIPITER GENTILIS) NESTING HABITAT ON THE LEWIS AND CLARK NATIONAL FOREST USING EIGENVECTOR FILTERS TO ACCOUNT FOR SPATIAL AUTOCORRELATION |
title_fullStr |
MODELING NORTHERN GOSHAWK (ACCIPITER GENTILIS) NESTING HABITAT ON THE LEWIS AND CLARK NATIONAL FOREST USING EIGENVECTOR FILTERS TO ACCOUNT FOR SPATIAL AUTOCORRELATION |
title_full_unstemmed |
MODELING NORTHERN GOSHAWK (ACCIPITER GENTILIS) NESTING HABITAT ON THE LEWIS AND CLARK NATIONAL FOREST USING EIGENVECTOR FILTERS TO ACCOUNT FOR SPATIAL AUTOCORRELATION |
title_sort |
modeling northern goshawk (accipiter gentilis) nesting habitat on the lewis and clark national forest using eigenvector filters to account for spatial autocorrelation |
publisher |
University of Montana |
publishDate |
2014 |
url |
https://scholarworks.umt.edu/etd/4355 https://scholarworks.umt.edu/context/etd/article/5381/viewcontent/Lehr_Morganne_FinalThesis.pdf |
genre |
Accipiter gentilis Northern Goshawk |
genre_facet |
Accipiter gentilis Northern Goshawk |
op_source |
Graduate Student Theses, Dissertations, & Professional Papers |
op_relation |
https://scholarworks.umt.edu/etd/4355 https://scholarworks.umt.edu/context/etd/article/5381/viewcontent/Lehr_Morganne_FinalThesis.pdf |
_version_ |
1771541069863845888 |