A5080179365- Fish Biology and Ecology Studies
- Fish Ecology and Management Studies
- Fish biology, ecology, and behavior
- Identification and Quantification in Food
- Freshwater macroinvertebrate diversity and ecology
- Genetic diversity and population structure
- Aquatic Invertebrate Ecology and Behavior
- Fisheries and Aquaculture Studies
- South Asian Studies and Conflicts
- Water Quality and Pollution Assessment
- Marine Biology and Ecology Research
- Hemiptera Insect Studies
- Marine and fisheries research
- Fluid Dynamics and Vibration Analysis
- Fluid Dynamics and Turbulent Flows
- Aquatic Ecosystems and Biodiversity
- Coleoptera: Cerambycidae studies
- Invertebrate Taxonomy and Ecology
- Advanced Vision and Imaging
- Species Distribution and Climate Change
- Marine Bivalve and Aquaculture Studies
- Insect-Plant Interactions and Control
- Marine Biology and Environmental Chemistry
- Water resources management and optimization
- Marine and coastal plant biology
Central University of Kerala
2020-2023
Andrew College
2023
Manonmaniam Sundaranar University
2009-2018
Centre for Science and Environment
2017
University of Madras
1977-2003
University of Kerala
1980-1991
Anna University, Chennai
1989
Indian Institute of Technology Madras
1978-1980
Indian Institute of Technology Indore
1978-1979
Ecology Letters (2011) 14: 289–294 Abstract The decomposition of plant litter is one the most important ecosystem processes in biosphere and particularly sensitive to climate warming. Aquatic ecosystems are well suited studying warming effects on because otherwise confounding influence moisture constant. By using a latitudinal temperature gradient an unprecedented global experiment streams, we found that will likely hasten microbial produce equivalent decline detritivore-mediated rates. As...
Plant litter breakdown is a key ecological process in terrestrial and freshwater ecosystems. Streams rivers, particular, contribute substantially to global carbon fluxes. However, there little information available on the relative roles of different drivers plant fresh waters, particularly at large scales. We present global-scale study streams compare biotic, climatic other environmental factors rates. conducted an experiment 24 encompassing latitudes from 47.8° N 42.8° S, using mixtures...
Most hypotheses explaining the general gradient of higher diversity toward equator are implicit or explicit about greater species packing in tropics. However, global patterns within guilds, including trophic guilds (i.e., groups organisms that use similar food resources), poorly known. We explored a key guild stream ecosystems, detritivore shredders. This was motivated by fundamental ecological role shredders as decomposers leaf litter and some records pointing to low shredder abundance...
ABSTRACT Aim We tested the hypothesis that shredder detritivores, a key trophic guild in stream ecosystems, are more diverse at higher latitudes, which has important ecological implications face of potential biodiversity losses expected as result climate change. also explored dependence local diversity on regional species pool across and examined influence environmental factors diversity. Location World‐wide (156 sites from 17 regions located all inhabited continents latitudes ranging 67° N...
The Zebrafish, Danio rerio, is a well-known vertebrate model species widely used in research associated with biomedical areas and comparative evolutionary biology. Interestingly, despite the importance of this species, little known about natural history, habitats, native distribution. In our study we collected individuals from twenty-one wild populations within species' distribution, ranging streams/rivers Western Ghats Peninsular India to those North-Eastern Himalayas. Habitat types are...
Understanding a wider range of genotype–phenotype associations can be achieved through ecological and evolutionary studies traditional laboratory models. Here, we conducted the first large-scale geographic analysis genetic variation within among wild zebrafish (Danio rerio) populations occurring in Nepal, India, Bangladesh, genetically compared to several commonly used lab strains. We examined at 1832 polymorphic EST-based single nucleotide polymorphisms (SNPs) cytb mitochondrial gene 13...
Many forested headwater streams are heterotrophic ecosystems in which allochthonous inputs of plant litter a major source energy. Leaves riparian vegetation entering the stream broken down by combination biotic and abiotic processes and, most temperate boreal streams, provide food habitat for dense populations detritivorous invertebrates. However, tropical different parts world show substantial variability number diversity leaf-shredding detritivores (hereafter detritivores). We used data...
Background Large-scale inter-basin water transfer (IBWT) projects are commonly proposed as solutions to distribution and supply problems. These problems likely intensify under future population growth climate change scenarios. Scarce data on the of freshwater fishes frequently limits ability assess potential implications an IBWT project fish communities. Because connectivity in habitat networks is expected be critical species' biogeography, consideration changes relative isolation riverine...
Interbasin water transfer projects, in which river connectivity is restructured via man‐made canals, are an increasingly popular solution to address the spatial mismatch between supply and demand of fresh water. However, ecological consequences such restructuring remain largely unexplored, there no general theoretical guidelines from derive these expectations. River systems provide excellent opportunities explore how network shapes habitat occupancy, community dynamics, biogeographic...
This paper explores the concept of multiculturalism in novels Paulo Coelho. Coelho, as a literary phenomenon, transcends his culture origin, establishing deep connection with readers worldwide through what has been termed “universal language” (Damrosch 197). The study examines rhetorical narrative appeal Coelho's works and delves into cognitive theory on how from various cultural backgrounds, genres, age groups resonate narratives. His often feature cosmopolitan characters who embody...
Diversity, distribution and assemblage structure of fishes were studied in 10 selected streams southern Western Ghats. The sampling was performed between April 2001 March 2002. Sixty species primary freshwater belonging to four orders, 13 families 27 genera recorded from the study area. Cyprinids most dominant members all streams. Maximum number species, individuals cyprinids Thalayanai stream. More specialized forms Homaloptera santhamparaiensis, Glyptothorax madraspatanum, Noemacheilus...
Understanding what mechanisms shape the diversity and composition of biological assemblages across broad‐scale gradients is central to ecology. Litter‐consuming detritivorous invertebrates in streams show an unusual gradient, with α‐diversity increasing towards high latitudes but no trend γ‐diversity. We hypothesized this pattern be related shifts nestedness several ecological processes shaping their (dispersal, environmental filtering competition). tested hypothesis, using a global dataset,...
Animals benefit from knowing if and how they are moving. Across the animal kingdom, sensory information in form of optic flow over visual field is used to estimate self-motion. However, different species exhibit strong spatial biases use flow. Here, we show computationally that noisy natural environments favor systems extract spatially biased samples when estimating The performance associated with these biases, however, depends on interactions between environment animal's brain behavior....
The barbin genera Discherodontus Rainboth 1989, Chagunius Smith 1938 and Hypselobarbus Bleeker 1860 are distrib-uted in Southeast South Asia among the least studied taxa of order Cypriniformes. Few morphologicalstudies have been conducted on these only a very limited number morphological characters were employedto hypothesize or infer their monophyly, inter-relationships, relationships with other barbins. main aim thisstudy is to examine monophyly three propose hypothesis relationship...
Very little is known about the diversity and systematics of genus cypriniform Hypselobarbus. Currently, genusincludes at least eleven species, all endemic to freshwater systems Peninsular India. While these species are commonlyknown in India frequently used as a food source, morphological within betweenspecies nothing regarding intraspecific genetic or relationships. Herein, we examine geneticdiversity for 11 mitochondrial genes populations representing nine species.Hypselobarbus resolved...