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New Mexico State University (1969)

Energy dynamics and net productivity of annual plants in southern New Mexico

Hettinger, Loren Robert

Titre : Energy dynamics and net productivity of annual plants in southern New Mexico

Auteur : Hettinger, Loren Robert

Université de soutenance : New Mexico State University

Grade : Master of Science (MS) 1969

Résumé
Species composition and energy dynamics of annual plants were measured at three elevations between Las Cruces and the Organ Mountains during 1968. Production was measured by randomly selecting plants which were in anthesis and referring to permanent quadrats to record phenology and densities throughout the growing season. Caloric contents were determined for the roots and shoots of each species. Energy measurements varied from 37.45 kcal/m2 at 4400’ in March to 514.62 kcal/m2 at 5000’ in June. The productivity for the growing season was 751.82 kcal/m2 and the average production was 4.08 kcal/m2/day (1.08 g/m2/day) during a 184 day growing period. Productivity varied from one site to another and varied throughout the growing season. Factors which produced this variation were precipitation, topography, and edapic factors.

Mots Clés : annual plant, energy dynamics, annual plant, productivity

Présentation

Page publiée le 22 juin 2018