Showing 3 results for Mangroves
Vibhuti U. Gawas, Rishikesh Tripathi, Ambaraparambil Vasu Sudhikumar, Nitin S. Sawant,
Volume 10, Issue 1 (3-2024)
Abstract
A new species of jumping spiders (Araneae, Salticidae), Afraflacilla goaensis Gawas & Tripathi sp. nov., is described, diagnosed and illustrated based on a single male specimen collected from a mangrove in Goa, India. Considering this finding, the genus Afraflacilla previously known from the Indian states of Tamil Nadu, Kerala, Gujarat, and Rajasthan, is now documented for the first time in Goa. Finally, the Indian records of the genus Afraflacilla are mapped.
Volume 12, Issue 1 (12-2022)
Abstract
The significance of mangrove species in the world is undeniable and planting artificial mangrove forests is a desirable solution to preserve mangroves. The mangroves provide us with superior ecological services and one of their main services is the bioremediation of heavy metals. Hence, this study aimed to assess the effects of artificial mangroves of Velayat Park of Bandar Abbas on the contamination, adsorption pattern and ecological risk of heavy metals in the sediment samples. Thirty samples were collected from two paralleled sampling sections included those without mangroves and containing mangroves. Each sampling area consisted of upper, middle and lower sections. After drying samples using an oven, the dried sediments were sieved by a 63-micrometer sieve and digested by nitric and hydrochloric acid mixture. The concentration of As, Cu, Fe, Ni, Pb, V, and Zn was determined using ICP. The studied factors suggested a high level of ecological risk for as and Pb and the highest risk was observed in the samples without mangroves and a lower risk was reported for samples containing mangroves. Comparing the results with sediment quality guidelines and other studies indicated a dangerous concentration of As. Pearson correlation coefficient values exhibited that artificial mangroves have significantly affected the adsorption pattern of heavy metals (p-Value < 0.05). The principal component analysis (PCA) showed that As and Pb are dominantly derived from oil products leakages and industrial sewages while Cu, Fe, Ni, V and Zn are predominantly derived from natural and geological sources.
Volume 13, Issue 4 (11-2024)
Abstract
Mudflats are situated at the interface between land and sea, transitioning from submerged during high tide to exposed during low tide. For burrowing animals, especially crabs, mudflats serve not only as nesting sites but also as feeding grounds. This study aimed to examine the morphology and estimate the density, of the crab Leptochryseus kuwaitense using their burrows in the mudflats of Khor-Khoran during the winter 2023. For this purpose, the mudflat above the mangroves was divided into three zones: the upper intertidal (station one), the mid-intertidal (station two), and the lower intertidal (station three) zones. The results of the study showed that the number of burrows was higher in the mid-intertidal zone compared to the other two zones, likely due to higher moisture levels and less human pressure. The diameter of the burrow entrances increased from station one to station three, with a significant difference observed between station one and station three . The morphology and structure of the burrows in the lower intertidal zone were more complex, likely due to competition with other species.
