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Assessment of vegetative Phenology with respect to leaf elongation pattern of Avicennia marina and Rhizophora mucronata in Hajambro creek, Indus delta, Pakistan Farooqui, Zafar; Siddiqui, Pirzada Jamal
Journal of Tropical Life Science Vol 4, No 2 (2014)
Publisher : Journal of Tropical Life Science

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Abstract

Leaves emergence and the rate of elongation have been studied in Hajambro creek in Indus deltaic region, Pakistan. Leaves emergence was found higher during the summer months (mostly pre-monsoon period), that was March April, May and June. Leaves of A. marina that were observed from March to July, till the leaves reached their maximum length (about 77 mm), showed a gradual increase in their length, reaching maximum in April. Leaves of Avicennia marina reached their maximum length (about 77 mm) in about 113 days. The leaves showed gradual increase in their length, reaching maximum in April (0.97mm d-1). The per-day increment in length was 0.54 mm d-1. As reaching their maximum length (77mm), the per-day increment in the length gradually slower down. The leaves of Rhizophora mucronata were observed from February to November. The leaves of Rhizophora mucronata showed elongation rate of 0.24 mm d-1 from the day of the first observation till the leaves reached their maximum length (120 mm). The maximum time required by the leaves to reach their maximum length (120 mm) was 236 days. The rates of elongation of leaves are also fast in summer. The rate of elongation of the leaves was found to be highly correlated with the temperature (p
Changes in Organic, Inorganic contents, Carbon Nitrogen ratio in decomposingAvicennia marinaand Rhizophora mucronataleaves on tidal mudflats in Hajambro creek, Indus delta, Pakistan Farooqui, Zafar; Siddiqui, Pirzada Jamal; Rasheed, Munawwer
Journal of Tropical Life Science Vol 4, No 1 (2014)
Publisher : Journal of Tropical Life Science

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Abstract

Leaf decomposition of Avicennia marina (Forskål) Vierh in Denkschr and Rhizophora mucronata (Poiret) was studied in situ using litterbags in Hajambro creek, Indus deltA. A single exponential model was presented, which best described the rate of decomposition for both the species. The rate of decomposition was species specific, A. marina leaves decomposed slower than the R. mucronata (p