DOI: 10.1016/j.foreco.2015.01.010
Scopus记录号: 2-s2.0-84922041487
论文题名: Range-wide analysis of northern spotted owl nesting habitat relations
作者: Loehle C. ; Irwin L. ; Manly B.F.J. ; Merrill A.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 342 起始页码: 8
结束页码: 20
语种: 英语
英文关键词: Classification
; Conservation
; Critical habitat
; Maxent
; Northern spotted owl
Scopus关键词: Classification (of information)
; Conservation
; Ecosystems
; Statistical methods
; Vegetation
; Biological interpretation
; Classification errors
; Critical habitat
; Habitat suitability model
; Maxent
; Northern spotted owl
; Reproductive success
; Us fish and wildlife services
; Birds
; classification
; data set
; ecological modeling
; habitat selection
; habitat type
; raptor
; reproductive success
; United States
; Strigiformes
; Strix occidentalis caurina
英文摘要: Recently the US Fish and Wildlife Service, as part of a critical habitat analysis for the northern spotted owl (. Strix occidentalis caurina), developed habitat suitability models based on thousands of owl nest sites distributed across 11 regions using the MaxEnt tool. Because these models formed the basis for critical habitat designations on millions of hectares of land, we undertook an independent evaluation of the FWS effort. We evaluated the accuracy of vegetation data used as input to develop the models, conducted out of sample analyses, correlated model output with owl reproductive success in two study areas, and developed alternate models using two different statistical methods. Vegetation data appeared accurate for only a few variables, and accuracy varied among model regions. Out of sample testing gave a high rate of classification errors and owl productivity was not correlated with MaxEnt model output in two study areas. Alternate statistical methods produced reasonable models with fewer variables. Critically, neither the models compared across regions nor the regions analyzed with different tools led to comparable use of variables. Thus biological interpretation of owl habitat selection models seemed ambiguous. In addition, for MaxEnt and one of the other tools, a highly significant trend by regression was found showing decreasing model accuracy as number of training nest sites increased. Together, these two results suggest that the generated models may be spurious to some unknown degree, perhaps because the underlying vegetation data, also derived from a model, are not sufficiently accurate to support the analysis and/or because the owls themselves affect habitat suitability by consuming their prey base. We suggest that the USFWS exercise caution in using MaxEnt models as a basis for regulatory purposes such as consultation, estimating likelihood of occupancy by owls, or evaluation of site-specific recovery actions. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65516
Appears in Collections: 影响、适应和脆弱性
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作者单位: National Council for Air and Stream Improvement, Inc., 552 S Washington Street, Suite 224, Naperville, IL, United States; National Council for Air and Stream Improvement, Inc., PO Box 68, Stevensville, MT, United States; Western Ecosystems Technology, Inc., 200B South Second Street, Laramie, WY, United States
Recommended Citation:
Loehle C.,Irwin L.,Manly B.F.J.,et al. Range-wide analysis of northern spotted owl nesting habitat relations[J]. Forest Ecology and Management,2015-01-01,342