Using Aerial Photography for Detecting Blackbrush [Acacia rigidula] on South Texas Rangelands

Toxic Amines and Alkaloids from Acacia Rigidula

Acacia ri`idula Benth[\ blackbrush\ is a shrub found growing on rocky ridges in west and southwest Texas and northern Mexico[ Consumption of blackbrush and a related species guajillo\ Acacia berlandieri Benth[\ has been associated with a locomotor ataxia known as {{limber leg||[ In an e}ort to identify the mechanism of this toxicity\ blackbrush was subjected to rigorous chemical analysis[ In ad...

Aerial Photography using a Nokia N95

A low cost UAV for aerial photography is constructed and tested. The UAV transfers images as they are captured via 802.11g to a ground station. Photo-mosaics are immediately assembled using SIFT keypoints for automatic image registration.

Climate Change Impacts on South American Rangelands

Colour Aerial Photography for Riverbed Classification

Colour aerial photography has the potential to identify and classify the size characteristics of exposed riverbed sediments over large areas efficiently. This paper describes the findings of a pilot project that sought to assess this potential and consider the impact of photo-scale on the accuracy of classifications obtained. Colour multi-scale digital imagery was acquired of a test area (120 x...

Inventory of Semi-Arid Rangelands in South Texas with LANDSAT Data