Effects of fire on belowground biomass in Chihuahuan desert grassland
نویسندگان
چکیده
منابع مشابه
Effects of grassland restoration efforts on mound-building ants in the Chihuahuan Desert
Shrub encroachment is a serious problem in arid environments worldwide because of potential reductions in ecosystem services and negative effects on biodiversity. In southwestern USA, Chihuahuan Desert grasslands have experienced long-term encroachment by shrubs including creosotebush (Larrea tridentata). Land managers have attempted an ambitious intervention to control shrubs by spraying herbi...
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Precipitation regimes are predicted to become more variable with more extreme rainfall events punctuated by longer intervening dry periods. Water-limited ecosystems are likely to be highly responsive to altered precipitation regimes. The bucket model predicts that increased precipitation variability will reduce soil moisture stress and increase primary productivity and soil respiration in aridl...
متن کاملThe composition of seed banks on kangaroo rat (Dipodomys spectabilis) mounds in a Chihuahuan Desert grassland
Disturbance is a major factor determining the plant community structure of ecological systems. In particular, small-scale disturbances from animals can increase heterogeneity and species diversity in plant communities. Kangaroo rat (Dipodomys spectabilis) mounds are small-scale disturbances that support unique plant communities compared to surrounding habitats. The seed bank, which is usually a...
متن کاملIndices of Grassland Biodiversity in the Chihuahuan Desert Ecoregion Derived from Remote Sensing
We used a relatively simple and direct remote-sensing approach to determine biodiversity values in arid ecosystems and thus identify potential conservation sites. We developed indices based on regression models between grass, shrub, litter, exposed-soil groundcover components, and Landsat thematic mapper satellite imagery reflectance values over a reference site in the northern Chihuahuan Deser...
متن کاملWhere do grassland birds winter? Density, abundance and distribution of wintering grassland passerines in the Chihuahuan Desert
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ژورنال
عنوان ژورنال: Ecosphere
سال: 2012
ISSN: 2150-8925
DOI: 10.1890/es12-00248.1