Filters: Tags: ecotones (X)63 results (142ms)
[The zonobiome concept of Heinrich Walter - A problem with its application to an example from Florida, USA.]
Description of the Reserve Naturelle Integrale d'Andohahela, Madagascar, and the 1995 Biological Inventory of the Reserve
Tree invasion within a pine/grassland ecotone: an approach with historic aerial photography and GIS modeling
Ecotone characterization between upland longleaf pine/wiregrass stands and seasonally-ponded isolated wetlands
Oribatid mites (Acari, Oribatida) of a primary peat bog pasture transition in the Swiss Jura mountains
Soil heterogeneity and the distribution of desert and steppe plant species across a desert-grassland ecotone
Bouteloua gracilis (Kunth) Lag. ex Griffiths (blue grama), Bouteloua eriopoda (Torr.) Torr. (black grama), and Larrea tridentata Coville (creosotebush) are dominant plants on the McKenzie Flats portion of the Llano de Manzano landform within Sevilleta National Wildlife Refuge in central New Mexico, part of the biome ecotone from the Colorado Shortgrass Steppe to the Chihuahuan Desert. In this study, we examine the hypothesis that soil heterogeneity, determined by variation in surface soil depth, carbonate accumulation, and fine-textured fraction, controls relative dominance of the three species. The area is flat, generally <1% slope; however, abrupt soil differences exist even within the flattest parts of the landscape...
Species-environment relationships and vegetation patterns: effects of spatial scale and tree life-stage
Differences in anatomical characteristics of blackbrush (Coleogyne ramosissima Torr.) leaves were quantitatively investigated along an elevational gradient in Lee Canyon of the Spring Mountains in southern Nevada. Three elevational sites were selected: a lower blackbrush ecotone, a nearly monospecific stand in the middle of the gradient, and an upper blackbrush ecotone. Stomatal density was significantly greater and palisade parenchyma was significantly shorter in the lower ecotone compared to the upper ecotone. Vessel diameters and areas were significantly smaller, while vessel density was higher with increasing aridity. Blackbrush shrubs exhibited upper and lower elevational ecotypes at the anatomical level in...
Patterns of shrub-dwelling arthropod diversity across a desert shrubland-grassland ecotone: a test of island biogeographic theory
Plant species dominance at a grassland-shrubland ecotone: an individual-based gap dynamics model of herbaceous and woody species
Historical variability in fire at the ponderosa pine - Northern Great Plains prairie ecotone, southeastern Black Hills, South Dakota