Relación uso-disponibilidad de componentes topográficos y un modelo de calidad del hábitat para el borrego cimarrón, en Sonora, México.
This study was done, in the desert ridge known as the Pico-Johnson, in the state of Sonora, Mexico, which is considered as natural habitat for the desert bighorn sheep (Ovis canadensis mexicana). In this work, we evaluate the importance of the relationship, between the bighorn sheep and the topograp...
| Hlavní autoři: | , , , , |
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| Médium: | Online |
| Jazyk: | spa |
| Vydáno: |
Instituto de Ecología, A.C.
1999
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| On-line přístup: | https://azm.ojs.inecol.mx/index.php/azm/article/view/1697 |
| _version_ | 1799770251990138880 |
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| author | López Saavedra, Eduardo E. M. Lee, Raymond C. De Vos, James E. Schweinsburg, Raymond Luna Salazar, Gonzalo |
| author_facet | López Saavedra, Eduardo E. M. Lee, Raymond C. De Vos, James E. Schweinsburg, Raymond Luna Salazar, Gonzalo |
| author_sort | López Saavedra, Eduardo E. |
| collection | AZM |
| description | This study was done, in the desert ridge known as the Pico-Johnson, in the state of Sonora, Mexico, which is considered as natural habitat for the desert bighorn sheep (Ovis canadensis mexicana). In this work, we evaluate the importance of the relationship, between the bighorn sheep and the topographic component of his habitat, by using use-availability techniques. Topography was divided in four subcomponents (Height, Slope, Aspect and Landform) which at the same time were divided in classes. For this study, the visual location of 20 bighorn sheep's (5 males and 15 females) marked with radiotransmition collars as well as unmarked sheep observations, were registered. It was considered as use the frequency of sheep observation, for one year and a half of monthly visits, registered within each subcomponent class. Availability was defined as the proportion in which the subcomponent classes were found throughout the study area. It was found that, the sheep, do not use, most of the habitat classes, in their exact proportions, that some are preferred (terrain’s higher than 300 meters, slopes higher than 60%, S-SW-W composite aspect and canyon slopes) and the rest of the classes either were avoided or used proportionally. Bedsites, were evaluated using the same technique, encountering very similar patterns. We developed a habitat quality model for the sheep, that emphasized topography, besides topography other habitat components evaluated were: vegetation, free water sources, precipitation, habitat discreteness and range expansion. Habitat quality classes were excellent, good, regular and poor. The model was validated, by using the frequency of sheep observation within the different habitat quality classes and considered as a good habitat quality predictor, on the basis that, 73.0% of the frequency observation, were done on areas classified by the model as excellent and good. |
| format | Online |
| id | azm-article-1697 |
| institution | Acta Zoológica Mexicana |
| language | spa |
| publishDate | 1999 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | azm-article-16972022-09-28T19:29:17Z Relación uso-disponibilidad de componentes topográficos y un modelo de calidad del hábitat para el borrego cimarrón, en Sonora, México. Relación uso-disponibilidad de componentes topográficos y un modelo de calidad del hábitat para el borrego cimarrón, en Sonora, México. López Saavedra, Eduardo E. M. Lee, Raymond C. De Vos, James E. Schweinsburg, Raymond Luna Salazar, Gonzalo Desert Bighorn Sheep Use-Availability Topography Bedsite Habitat Quality Model. Borrego Cimarrón Uso-Disponibilidad Topografía Echadero Modelo de Calidad del Hábitat. This study was done, in the desert ridge known as the Pico-Johnson, in the state of Sonora, Mexico, which is considered as natural habitat for the desert bighorn sheep (Ovis canadensis mexicana). In this work, we evaluate the importance of the relationship, between the bighorn sheep and the topographic component of his habitat, by using use-availability techniques. Topography was divided in four subcomponents (Height, Slope, Aspect and Landform) which at the same time were divided in classes. For this study, the visual location of 20 bighorn sheep's (5 males and 15 females) marked with radiotransmition collars as well as unmarked sheep observations, were registered. It was considered as use the frequency of sheep observation, for one year and a half of monthly visits, registered within each subcomponent class. Availability was defined as the proportion in which the subcomponent classes were found throughout the study area. It was found that, the sheep, do not use, most of the habitat classes, in their exact proportions, that some are preferred (terrain’s higher than 300 meters, slopes higher than 60%, S-SW-W composite aspect and canyon slopes) and the rest of the classes either were avoided or used proportionally. Bedsites, were evaluated using the same technique, encountering very similar patterns. We developed a habitat quality model for the sheep, that emphasized topography, besides topography other habitat components evaluated were: vegetation, free water sources, precipitation, habitat discreteness and range expansion. Habitat quality classes were excellent, good, regular and poor. The model was validated, by using the frequency of sheep observation within the different habitat quality classes and considered as a good habitat quality predictor, on the basis that, 73.0% of the frequency observation, were done on areas classified by the model as excellent and good. Este estudio se llevó a cabo en la sierra desértica conocida como Pico-Johnson, en el Estado de Sonora, considerada como hábitat natural del borrego cimarrón (Ovis canadensis mexicana). En este trabajo, se evalúa la importancia de la relación entre el borrego cimarrón y el componente topográfico de su hábitat, mediante técnicas de uso-disponibilidad. La topografía se dividió en cuatro subcomponentes (Altitud, Pendiente, Orientación y Topoforma) y se consideró como uso a las frecuencias de observación, durante un año y medio de visitas mensuales, de los borregos registrados en cada uno de los diferentes subcomponentes, para este estudio se utilizaron como registros, la localización visual de 20 borregos cimarrones (5 machos y 15 hembras) todos con collar radiotransmisor, así como de animales no marcados. La disponibilidad se definió como la proporción en que cada uno de los subcomponentes se encontraba en el área de estudio. Se encontró que los borregos no utilizan los subcomponentes según su proporción, que algunos son preferidos (altitudes mayores de 300m, pendientes mayores de 60%, orientaciones (S-SW-W) y topoformas de tipo ladera de cañón) y otros son evadidos o utilizados en igual proporción. Igualmente, se evaluaron los sitios donde estos animales duermen y descansan (echaderos), encontrándose patrones muy similares de uso. Haciendo énfasis en las variables topográficas, se implementó un modelo de calidad del hábitat en el cual se evaluaron componentes como la topografía, vegetación, agua libre disponible, precipitación, competencia, uso humano, continuidad y expansión del hábitat. El modelo clasificó la calidad del hábitat en excelente, buena, regular y pobre. El modelo fue validado, mediante el registro de frecuencias de observación de borregos en las diferentes clases de calidad del hábitat, considerándose como bueno ya que el 73.0% de los registros, se ubicaron en las zonas clasificadas como excelentes y buenas. Instituto de Ecología, A.C. 1999-04-14 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Original articles Artículos originales application/pdf https://azm.ojs.inecol.mx/index.php/azm/article/view/1697 10.21829/azm.1999.76761697 ACTA ZOOLÓGICA MEXICANA (N.S.); No. 76 (1999); 17-34 ACTA ZOOLÓGICA MEXICANA (N.S.); Núm. 76 (1999); 17-34 2448-8445 0065-1737 spa https://azm.ojs.inecol.mx/index.php/azm/article/view/1697/1811 Derechos de autor 2018 Acta Zoológica Mexicana (parte1) http://creativecommons.org/licenses/by-nc-sa/4.0 |
| spellingShingle | López Saavedra, Eduardo E. M. Lee, Raymond C. De Vos, James E. Schweinsburg, Raymond Luna Salazar, Gonzalo Relación uso-disponibilidad de componentes topográficos y un modelo de calidad del hábitat para el borrego cimarrón, en Sonora, México. |
| title | Relación uso-disponibilidad de componentes topográficos y un modelo de calidad del hábitat para el borrego cimarrón, en Sonora, México. |
| title_full | Relación uso-disponibilidad de componentes topográficos y un modelo de calidad del hábitat para el borrego cimarrón, en Sonora, México. |
| title_fullStr | Relación uso-disponibilidad de componentes topográficos y un modelo de calidad del hábitat para el borrego cimarrón, en Sonora, México. |
| title_full_unstemmed | Relación uso-disponibilidad de componentes topográficos y un modelo de calidad del hábitat para el borrego cimarrón, en Sonora, México. |
| title_short | Relación uso-disponibilidad de componentes topográficos y un modelo de calidad del hábitat para el borrego cimarrón, en Sonora, México. |
| title_sort | relación uso-disponibilidad de componentes topográficos y un modelo de calidad del hábitat para el borrego cimarrón, en sonora, méxico. |
| url | https://azm.ojs.inecol.mx/index.php/azm/article/view/1697 |
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