FOREST POST FIRE IMPACT ON EARTHWORM BIOMASS AND ABUNDANCE IN ZAWITA (DUHOK PROVINCE) FORESTS KURDISTAN REGION

  • NIROZH YOUNIS MIHO Dept. of Forestry, College of Agricultural Engineering Sciences, University of Duhok, Kurdistan Region-Iraq
  • NASREN N. M. REKANY Dept. of Forestry, College of Agricultural Engineering Sciences, University of Duhok, Kurdistan Region-Iraq
Keywords: Earthworm, Abundance, Biomass, Forest fire, physio-chemical properties

Abstract

Little is known about earthworms (Lumbricus terrestris) (Oligochaeta: Lumbricidae) in Duhok Governorate/ North Iraq. This study examines the effect of fire on earthworm abundance and biomass at different times of burning forests compared with unburnt forests in Duhok Governorate. Wildfires have a significant impact on shaping the structure and makeup of forests, especially in areas characterized by extended periods of dry and hot summers. In the context of Northern Iraq and the Kurdistan Region, the relatively brief wet seasons of autumn and winter lead to a higher incidence of wildfires during the summer months. To test the post-fire effects on earthworm's abundance and biomass, soil cores were collected from four different villagesZawita, Bajlor, Bade) that have been burnt in different years (before five, three and one year) respectively and a control site. Earthworm abundance and biomass, and some physical and chemical soil properties (soil moisture, soil texture, organic matter (OM), pH, available phosphorus P, exchangeable potassium K and total nitrogen N,) were measured. Based on the outcomes of this study, the earthworm abundance and biomass showed significantly positive correlation (P < 0.01) with the availability of measured physio-chemical properties. Furthermore, forest fire had a significant (P < 0.01) effect on the earthworm population by determining higher content of measured physio-chemical properties (organic matter NPK). Data suggest that fire can alter the structure of earthworm communities in soil by affecting the availability of food resources or the burning of waste and soil organic matter. Furthermore, future studies will need to have replications of control in all burnt sites as long they have different soil physio-chemical properties

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Published
2023-11-14
How to Cite
MIHO , N. Y., & REKANY, N. N. M. (2023). FOREST POST FIRE IMPACT ON EARTHWORM BIOMASS AND ABUNDANCE IN ZAWITA (DUHOK PROVINCE) FORESTS KURDISTAN REGION . Journal of Duhok University, 26(2), 61-71. https://doi.org/10.26682/ajuod.2023.26.2.7
Section
Agriculture and Veterinary Science