Remote sensing for irrigation water management in the semi-arid Northeast of Brazil

Comparative biology of the crab Goniopsis cruentata: geographic variation of body size, sexual maturity, and allometric growth

“…This is possibly an advantage to cope with such stressful conditions-larger bodies present a smaller surface area in relation to body volume than small individuals, which make them less prone to desiccation (Atkinson 1994;Gardner et al 2011;Allen et al 2012). This would be particularly important in extremely hot, dry environments where the rate of water loss is more pronounced (Gardner et al 2011), which seems to occur more frequently on a temporal scale in Ceará because of recurring harsh droughts (Folhes et al 2009;Araújo et al 2012; also see maximum temperatures in Table 2). Such findings corroborate those of Yoder et al (2007), who experimentally demonstrated that individuals of Uca pugilator are larger, and consequently less susceptible to desiccation, in a drier environment.…”

“…In Ceará, the area of study is classified as semiarid (Araújo et al 2012) and is characterized by lower rainfall, higher temperatures, and higher evaporation rates than mangroves from Alagoas ( Table 1). The dry season starts in June and ends in January, and the rainy season starts in February and ends in May (Folhes et al 2009). Harsh droughts, associated with El niño-Southern Oscillation, are a regular phenomenon in Ceará (Folhes et al 2009;Araújo et al 2012).…”

“…The dry season starts in June and ends in January, and the rainy season starts in February and ends in May (Folhes et al 2009). Harsh droughts, associated with El niño-Southern Oscillation, are a regular phenomenon in Ceará (Folhes et al 2009;Araújo et al 2012). In Alagoas, the area of study is classified as a tropical humid region.…”

Irrigation of Sandy Soils, Basics and Scheduling

“…Table ( In areas, where a single crop is grown [17] Irrigation scheduling can be done with the help of remote sensing data. Reflectance of solar radiation by the plants with sufficient amount of water is different from that of stressed plants.…”

Irrigation Water Management in Latin America

“…In SA some efforts have been made to apply RS techniques for the management of water resources in public irrigation schemes and private farms. Bastiaanssen et al (2001) used SEBAL to monitor irrigation performance in Nilo Coelho, Brazil; Teixeira et al, 2007 and performed water productivity analysis via RS; Folhes et al (2009) applied the RS model METRIC for irrigation water management in the semiarid northeast of Brazil. Trezza (2006) applied the RS models SEBAL and METRIC to estimate water use in a large irrigation system in Venezuela and employ results for water management; Schipper (2005) determined crop water use in Santiago del Estero, Argentina.…”