Pandey C.N.,GEER Foundation |
Pandey R.,GEER Foundation |
Jain B.K.,M G Science Institute
Phytomorphology: An International Journal of Plant Morphology | Year: 2010
Rhizophora mucronata Lamk., one of the mangrove species of the coastal mudflats of Gujarat, India, shows low natural regeneration which calls for artificial propagation of the species. The present study on reproductive phenology, reproductive vigour and the reproductive success of the species provides critical information needed for its artificial regeneration. The key findings of the study includes presence of buds throughout the year, predominant flowering during April to July. Fruit development occurred during monsoon while propagules emerged almost throughout the year with peak during winters. The inflorescence mortality occurs more during the pre-flowering and flowering stages. Further, reproductive success is very low which may be attributed to high inflorescence mortality. The reproductive phenology and reproductive vigour have shown temporal as well as spatial variations. It is indicated that winters are the best time for propagule collection in the study area.
Tatu K.,GEER Foundation |
Vyas V.,GEER Foundation |
Munjapara S.,GEER Foundation |
Pathak B.,GEER Foundation |
Pandey C.N.,Aranya Bhavan
Journal of the Bombay Natural History Society | Year: 2012
A state-wide survey of the Critically Endangered White-backed Vulture Gyps bengalensis and Long-billed or Indian Vulture Gyps indicus in the 26 districts of Gujarat was undertaken from May 29-30,2010. The survey was carried out throughout the state by hundreds of volunteers and personnel of the State Forest Department to determine the population of the two Gyps vulture species in all the districts and regions of the state, and to assess changes in their populations through comparison with the earlier surveys done in 2005 and 2007. Total count method was used, and the counts were made at resting, roosting, feeding, and nesting sites to assess the population size, number of young birds, and the nest-tree availability. The survey resulted in an estimated population of 793 White-backed Vulture (WBV) and 265 Long-billed Vulture (LBV); the identity of 7 individuals was uncertain. When compared with the earlier surveys, it revealed that there has been a 62.9% decrease (-1,342 individuals) in the population of WBV and 29.5% reduction (-111 individuals) in the population of LBV within a time span of 5 years. © Bombay Natural History Society 2012.