On the role of the Arabian Sea thermal variability in governing rainfall variability over the Western Ghats

2021 ◽  
Vol 130 (3) ◽  
Author(s):  
Anika Arora
Keyword(s):  
Western Ghats ◽  
Arabian Sea ◽  
Rainfall Variability ◽  
Thermal Variability ◽  
The Western Ghats

scholarly journals Vanishing waters: water chemistry of temporary rock pools of the Western Ghats, India

2021 ◽  
Author(s):  
Aboli Kulkarni ◽  
Surajit Roy ◽  
M. Yogeshwaran ◽  
Bhushan Shigwan ◽  
Smrithy Vijayan ◽  
...  
Keyword(s):  
Water Quality ◽  
Water Chemistry ◽  
Western Ghats ◽  
Ionic Concentration ◽  
Rock Pools ◽  
Wide Range ◽  
Geographical Position ◽  
Anions And Cations ◽  
The Western Ghats

Abstract The freshwater rockpools support high endemic biodiversity but are poorly studied habitats in the Western Ghats biodiversity hotspot. These freshwater rock pools are situated on outcrops at various elevations in the Western Ghats and are composed of different bedrocks such as laterite and basalt. We aimed to analyze the water quality, geographical position based differences in the water chemistry and the role of bedrock in determining the water chemistry of the rock pools. Our study showed a wide range of water quality variables such as pH, conductivity, and ionic contents that attributed to the natural variation. We observed a drastic variation in the anions and cations at low elevation pools. Rock type and precipitation are influencing the ionic concentration, for example, Calcium and Bromide could be attributed to the seasonal precipitation and geomorphology. This documentation of physicochemical properties of the Western Ghats rock pools can form a baseline for further detailed studies.

scholarly journals Monitoring of adult aquatic insect activities and ecological role in the riparian zone of streams in the Western Ghats, India

2016 ◽  
Vol 4 (3) ◽  
pp. 460
Author(s):  
T. Kubendran ◽  
M. Ramesh
Keyword(s):  
Aquatic Insects ◽  
Western Ghats ◽  
Riparian Zone ◽  
Food Resource ◽  
Aquatic Insect ◽  
Ecological Role ◽  
Freshwater Biodiversity ◽  
The Western Ghats ◽  
Adult Aquatic Insects

<div><p><em>The Western Ghats, running parallel to the west coast of India between 8° N and 21° N is a prominent feature of the peninsular India. In freshwater biodiversity hotspots like the Western Ghats, no information is available on activates and ecological role of adult aquatic insect in the riparian zone of streams.</em><strong><em> </em></strong><em>Most adult aquatic insects that emerge from streams live briefly in the nearby riparian zone. Adult activities, such as mating dispersal and feeding influence their distribution in the terrestrial habitat. An observation at Kurangani streams, Western Ghats, India has shown that both numbers and biomass of adult aquatic insects are greatest in the near stream vegetation; however, adult insects can be relatively common 1 to 10 feet from the stream. Why because, adult aquatic insects are abundant and they are primary food resource for many riparian insectivores. The role of adult aquatic insects in the riparian zone must be better understood for riparian and aquatic food chain to be complete. </em></p></div>

scholarly journals Numerical Study of Physical Processes Controlling Summer Precipitation over the Western Ghats Region

2018 ◽  
Vol 31 (8) ◽  
pp. 3099-3115 ◽  
Author(s):  
Gang Zhang ◽  
Ronald B. Smith
Keyword(s):  
Western Ghats ◽  
Arabian Sea ◽  
Numerical Study ◽  
Deep Convection ◽  
Convective Available Potential Energy ◽  
Wrf Model ◽  
Summer Precipitation ◽  
Physical Processes ◽  
Convective Rainfall ◽  
The Western Ghats

Abstract Summer precipitation over the Western Ghats and its adjacent Arabian Sea is an important component of the Indian monsoon. To advance understanding of the physical processes controlling this regional precipitation, a series of high-resolution convection-permitting simulations were conducted using the Weather Research and Forecasting (WRF) Model. Convection simulated in the WRF Model agrees with TRMM and MODIS satellite estimates. Sensitivity simulations are conducted, by altering topography, latent heating, and sea surface temperature (SST), to quantify the effects of different physical forcing factors. It is helpful to put India’s west coast rainfall systems into three categories with different causes and characteristics. 1) Offshore rainfall is controlled by incoming convective available potential energy (CAPE), the entrainment of midtropospheric dry layer in the monsoon westerlies, and the latent heat flux and SST of the Arabian Sea. It is not triggered by the Western Ghats. When offshore convection is present, it reduces both CAPE and the downwind coastal rainfall. Strong (weak) offshore rainfall is associated with high (low) SSTs in the Arabian Sea, suggested by both observations and sensitivity simulations. 2) Coastal convective rainfall is forced by the coastline roughness, diurnal heating, and the Western Ghats topography. This localized convective rainfall ends abruptly beyond the Western Ghats, producing a rain shadow to the east of the mountains. This deep convection with mixed phase microphysics is the biggest overall rain producer. 3) Orographic stratiform warm rain and drizzle dominate the local precipitation on the crest of the Western Ghats.

Tree Diversity and Carbon Sinks: Role of Village Agro-ecosystems in the Western Ghats, Karnataka, India

2005 ◽  
Vol 3 (2) ◽  
pp. 114-121 ◽  
Author(s):  
I. K. Murthy ◽  
D. M. Bhat ◽  
G. T. Hedge ◽  
B. C. Nagaraj ◽  
K. S. Murali ◽  
...  
Keyword(s):  
Western Ghats ◽  
Tree Diversity ◽  
Carbon Sinks ◽  
The Western Ghats

scholarly journals The Role of Informal Protected Areas in Maintaining Biodiversity in the Western Ghats of India

2005 ◽  
Vol 10 (1) ◽  
Author(s):  
Shonil A. Bhagwat ◽  
Cheppudira G. Kushalappa ◽  
Paul H. Williams ◽  
Nick D. Brown
Keyword(s):  
Protected Areas ◽  
Western Ghats ◽  
Western Ghats Of India ◽  
The Western Ghats

Secondary removal ofMyristica fatua(Myristicaceae) seeds by crabs inMyristicaswamp forests in India

2014 ◽  
Vol 30 (3) ◽  
pp. 259-263 ◽  
Author(s):  
Shivani Krishna ◽  
Hema Somanathan
Keyword(s):  
Seed Predation ◽  
Western Ghats ◽  
Forest Floor ◽  
Seed Removal ◽  
Coastal Forests ◽  
Simultaneous Choice ◽  
Temporal And Spatial ◽  
Study Sites ◽  
The Western Ghats

Abstract:Little is known about the role of crabs as seed dispersers and predators. Recently, there has been interest in understanding their influence on plant recruitment in coastal forests. Secondary seed removal by crabs in a swamp-specialist tree,Myristica fatua, was investigated in the rare and patchy freshwaterMyristicaswamps in the Western Ghats in India. Tethered-line experiments were used to determine the role of crabs as secondary seed-removal agents in two study sites. Crabs transported a large percentage (63.3%) of seeds (n = 60) placed on the forest floor compared with rodents (25%) and other unknown agents (13.3%). Simultaneous choice experiments suggested that the nutrient-rich arils covering seeds were consumed, but there was no evidence for seed predation by crabs. A small percentage (13.3%) of monitored seeds (n = 60) germinated from within crab burrows. The spatial scale of secondary removal by crabs was restricted to < 10 m. In these fragmented swamp forests, secondary removal by crabs retains seeds largely within the swamps, where conditions for their establishment and survival are optimal. Thus, secondary seed removal by crabs could provide temporal and spatial refugia from seed predators such as rodents inMyristica fatua.

Sign in / Sign up

Export Citation Format

Share Document