A classification of forest habitat types of the southern Arizona and portions of the Colorado Plateau /

Muldavin, Esteban; DeVelice, Robert L.; Ronco, Frank.; Forest, Rocky Mountain; Station, Range Experiment

doi:10.5962/bhl.title.99312

Cited by 9 publications

(7 citation statements)

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“…These areas are interpreted as regions with environmental conditions similar to where the species occurs, and hence represent areas to target future surveys [ 8 , 9 , 44 ]. Climatically, the Arizona Central Highlands differs from southeastern Arizona in that it is cooler and wetter, with the majority of precipitation occurring during the winter rather than summer [ 45 ]. As a consequence, for example, Madrean encinal does not occur in the Central Highlands [ 31 ].…”

Section: Discussionmentioning

confidence: 99%

Use of Anecdotal Occurrence Data in Species Distribution Models: An Example Based on the White-Nosed Coati (Nasua narica) in the American Southwest

Frey

Lewis

Guy

et al. 2013

Animals

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Simple SummaryWe evaluated the influence of occurrence records with different reliability on predicted distribution of a unique, rare mammal in the American Southwest, the white-nosed coati (Nasua narica). We concluded that occurrence datasets that include anecdotal records can be used to infer species distributions, providing such data are used only for easily-identifiable species and based on robust modeling methods such as maximum entropy. Use of a reliability rating system is critical for using anecdotal data. AbstractSpecies distributions are usually inferred from occurrence records. However, these records are prone to errors in spatial precision and reliability. Although influence of spatial errors has been fairly well studied, there is little information on impacts of poor reliability. Reliability of an occurrence record can be influenced by characteristics of the species, conditions during the observation, and observer’s knowledge. Some studies have advocated use of anecdotal data, while others have advocated more stringent evidentiary standards such as only accepting records verified by physical evidence, at least for rare or elusive species. Our goal was to evaluate the influence of occurrence records with different reliability on species distribution models (SDMs) of a unique mammal, the white-nosed coati (Nasua narica) in the American Southwest. We compared SDMs developed using maximum entropy analysis of combined bioclimatic and biophysical variables and based on seven subsets of occurrence records that varied in reliability and spatial precision. We found that the predicted distribution of the coati based on datasets that included anecdotal occurrence records were similar to those based on datasets that only included physical evidence. Coati distribution in the American Southwest was predicted to occur in southwestern New Mexico and southeastern Arizona and was defined primarily by evenness of climate and Madrean woodland and chaparral land-cover types. Coati distribution patterns in this region suggest a good model for understanding the biogeographic structure of range margins. We concluded that occurrence datasets that include anecdotal records can be used to infer species distributions, providing such data are used only for easily-identifiable species and based on robust modeling methods such as maximum entropy. Use of a reliability rating system is critical for using anecdotal data.

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Section: Discussionmentioning

confidence: 99%

Use of Anecdotal Occurrence Data in Species Distribution Models: An Example Based on the White-Nosed Coati (Nasua narica) in the American Southwest

Frey

Lewis

Guy

et al. 2013

Animals

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“…The stands are representative of those found in the Pinus ponderosa/Quercus gambelii habitat type (Muldavin et al 1996). Their site index, based on age at breast height of 100 years (Minor 1964), ranged from 42 to 75 ft. Nearly 85% of these stands occurred on Productivity Class 6 sites with a productivity potential of about 30 ft 2 /acre/year.…”

Section: Study Areamentioning

confidence: 99%

Heavy thinning of ponderosa pine stands: An Arizona case study

Ffolliott¹,

Baker²,

Gottfried³

2000

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Growth and structural changes in a mosaic of even-aged ponderosa pine (Pinus ponderosa) stands were studied for 25 years to determine the long-term impacts of a heavy thinning treatment to a basal-area level of 25 ft 2 /acre. Basal area and volume growth of these stands has increased since thinning and likely will continue to increase as the residual trees increase in size. Furthermore, future stand integrity should be maintained at relatively low-density levels. It is unlikely, however, that timber production could be sustained at this level. A more plausible scenario is to manage the watershed for other resource values available from ponderosa pine stands.

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“…Downy brome also dominates sites occupied by silver sagebrush (A. cana) and blue grama (Bouteloua gracilis) in Wyoming (Thilenius et al 1995). In pinyon-juniper and mountain brush lands, downy brome associates with Rocky Mountain juniper (Juniperus scopulorum) (Hansen and Hoffman 1988;Terwiller and Tiedeman 1978) western juniper (J. occidentalis) (Driscoll 1964;Franklin and Dyrness 1973), singleleaf pinyon (Pinus monophylla) (Everett 1985;Lewis 1971), Colorado pinyon (P. edulis), Gambel oak (Quercus gambelii) (Hess and Wasser 1982;Muldavin et al 1996), Emory oak (Q. emoryi) (Warren et al 1992), antelope bitterbrush (Purshia tridentata) (Driscoll 1964;Franklin and Dyrness 1973;Mueggler and Stewart 1980;Young et al 1976), curlleaf mountain mahogany (Cercocarpus ledifolius) (Franklin and Dyrness 1973;Lewis 1971;Young et al 1976), skunkbush sumac (Rhus trilobata) (Mueggler and Stewart 1980;Thilenius et al 1995), snowberry (Symphoricarpos spp.) (Young et al 1976), serviceberry (Amelanchier pallida), and mountain big sagebrush (A. tridentata ssp.…”

Section: Ecologymentioning

confidence: 99%

Seed Bank Depletion: The Key to Long-Term Downy Brome ( Bromus tectorum L.) Management

Sebastian

Nissen

Sebastian³

et al. 2017

Rangeland Ecology & Management

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A classification of forest habitat types of the southern Arizona and portions of the Colorado Plateau /

Cited by 9 publications

References 0 publications

Use of Anecdotal Occurrence Data in Species Distribution Models: An Example Based on the White-Nosed Coati (Nasua narica) in the American Southwest

Use of Anecdotal Occurrence Data in Species Distribution Models: An Example Based on the White-Nosed Coati (Nasua narica) in the American Southwest

Heavy thinning of ponderosa pine stands: An Arizona case study

Seed Bank Depletion: The Key to Long-Term Downy Brome ( Bromus tectorum L.) Management

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