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Pakistan Journal of Biological Sciences
  Year: 2003 | Volume: 6 | Issue: 6 | Page No.: 589-596
DOI: 10.3923/pjbs.2003.589.596
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Accessible Forage Biomass of Browse Species in Matruh Area, a Mediterranean Coastal Region, Egypt

S. Z. Heneidy

Thirty-two sites with five different habitats were selected to represent study area to highlight the above ground as well as the actual available biomass for the grazing animals. The vegetation of the area was composed of both perennial and annual species, where the woody species (browse species) was the most common life-form. The highest total above-ground phytomass was 1897± 843 kg ha-1. Eighty six percent of perennials biomass was produced in the rocky ridge habitat during the wet season. While, the rest was produced in the saline depression habitat (675 ± 22.9 kg ha-1). The primary productivity of the pasture in these habitats was 169 ± 5.3 and 1083±674 kg ha-1 y-1 respectively. The highest biomass of accessible parts was produced in the non-saline depression habitat The annual average of the primary production in present study was 590± 117 kg ha-1 y-1, while that for the accessible production was 410 ± 39 kg ha-1 y-1. In addition the average Rain Use Efficiency (RUE) in the study area was 5.1 kg ha-1 y-1 mm-1 for accessible production and was 8.7 kg ha-1 y-1 mm-1 for primary production. Moreover, the Carrying Capacity (CC) in the study area ranged from 0.5 to 4.4 ha head-1 (mean = 1.7 ± 0.17 ha head-1). Calculating the Coefficient of Variation (CV), revealed that when the CV value was 1.2 for the primary production it reflected a great variation between sites, compared with a value of only 0.54 for accessible production. The average Production to Rain Variability Ratio (PRVR) was 2.4 for primary production and 1.1 for accessible dry matter production. The relationships between accessible production and each of carrying capacity (CC) and RUE were also studied. It was inversely related to the first (r = - 0.83**) while was directly related to the second measure (r = 0.45*).
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How to cite this article:

S. Z. Heneidy , 2003. Accessible Forage Biomass of Browse Species in Matruh Area, a Mediterranean Coastal Region, Egypt. Pakistan Journal of Biological Sciences, 6: 589-596.

DOI: 10.3923/pjbs.2003.589.596






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