Abstract The Cactacea family comprises 128 genera and 1450 species with predominantly neotropical distribution. Cacti are commonly found in arid semi-arid regions have great ecological relevance due to their interactions animals other groups of plants. Abiotic interactions, such as topography, altitude, rainfall, temperature soils, also influence the composition distribution cacti. objective pr...

Tropical dry forest is one of the most threatened ecosystems, and it disappearing at an alarming rate. Shifting cultivation commonly cited as a driver tropical loss, although helps to maintain coverage but with less density. We investigated dynamics their contributing factors find out if there equilibrium between these two processes. classified multi-temporal Sentinel-2A images machine learning...

The geographical distribution characteristics of villages characterised by ethnic minorities are determined the selection site when village was initially established. location inherited and well-preserved minority must be exceptionally compatible with natural terrain, a logical relationship. Nonetheless, issue location, which is directly related to development features distribution, has receive...

Data from a survey of nematodes associated with sugarcane conducted in South Africa in 1978 (Spaull, 1981) were re-examined in combination with associated soil, climatic and topographic data. The objective was to identify associations between the distribution of the nematodes and soil, climatic and topographic factors in sugarcane fields in KwaZulu-Natal. The procedures used in the survey are s...

To reduce populations of hemlock woolly adelgid, Adelges tsugae Annand (Hemiptera: Adelgidae), >500,000 Sasajiscymnus tsugae (Sasaji and McClure) (Coleoptera: Coccinellidae) have been released in the Great Smoky Mountains National Park since 2002. To determine factors affecting establishment and recovery of these predatory beetles, 65 single release sites were sampled using beat sheets from 200...

Minnaert constants (K) were derived from non atmospherically corrected, high-sun elevation angle Landsat TM data (8 June 1996 and 13 July 1997) and DEMs at 30x30 m spatial resolution using the IDL procedure developed at Dartmouth College. K constants were calculated for two contiguous areas in northern Apennines, the former (366 ha) covered by beech (Fagus Sylvatica) forest and the latter (343 ...

Nationwide geospatial databases in general and topographic ones in particular are today one of the most common infrastructure for mapping and other geo-related tasks. These databases are designated to establish an adequate, continuous and if possible homogeneous representation of our natural environment. New data acquisition technologies, which present high accuracies and resolution levels that...

PURPOSE To describe topographic and endoscopic anatomy of guinea pig ear for development of surgical approaches in experimental studies. METHODS Experimental study. Eight adult guinea pigs (Cavia porcellus) were used in this study. Four animals were described through endoscopic view and four animals were used to describe topographic anatomy. RESULTS The main structures of middle ear were we...