Browsing Division of Biological Sciences by Subject "Ecology"
Now showing items 21-34 of 34
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Resource, Use, Culture And Ecological Change: A Case Study Of The Nilgiri Hills Of Southern India
(Indian Institute of Science, 2005-09-01)Over the last two decades, there have been increasing concerns about environmental degradation and its consequences on the long-term sustainability of socio-economic systems around the world. The publication of the report ... -
The Role of Nursery Size and Plant Phenology on the Reproduction of and Relationships within a Fig-fig Wasp Nursery Pollination System
(2018-05-09)Obligate nursery pollination mutualisms such as the fig–fig wasp system, with their central plant–pollinator mutualism associated with non-pollinating satellite wasp species, can function as closed system microcosms ... -
Sexual Selection On Elephant Tusks
(2017-06-12)Darwin was troubled by elaborate male traits observed in many species that are seemingly maladaptive for survival, the peacock’s tail being the most iconic of all. He wrote "The sight of a feather in a peacock’s tail, ... -
Social Organisation And Cooperation In Genetically Mixed Colonies Of The Primitively Eusocial Wasp, Ropalidia Marginata
(Indian Institute of Science, 2005-08-05)Altruism in its extreme form is seen in social insects where most individuals give up their own reproduction and work to rear the offspring of their queen. The origin and evolution of such sterile worker castes remains a ... -
Soil microorganisms and biogeochemical cycles in a grazing ecosystem: interactions between producers, consumers, and decomposers
Microorganisms are the unseen majority that determines ecosystem processes, they perform biogeochemical functions that translate into essential services, and regulate global climate. In grazing ecosystems, which represent ... -
Species Ranges, Richness and Replacement of Trees in the Evergreen Forests of the Western Ghats
(2018-05-14)It has been more than two centuries since the latitudinal pattern of increase in taxonomic richness from poles to equator was first documented. After two centuries of research, and with more than two dozen hypotheses ... -
Stress Physiology of Free-ranging Asian Elephants (Elephas maximus) : Influence of Ecological and Anthropogenic Stressors
(2018-07-09)Various ecological and human-induced disturbances play an important role in defining the health of an animal. To cope up with such threats or challenges to its homeostasis, an animal responds by secreting stress hormones ... -
The Structure And Function Of The Vocal Repertoire Of The Greater Racket-Tailed Drongo (Dicrurus paradiseus) : Insights Into Avian Vocal Mimicry
(2017-07-12)Sound is used as a medium for communication by taxa as varied as insects, fish, amphibians, birds and mammals. In some birds like the suboscines, song is genetically encoded, whereas in parrots, hummingbirds and oscines, ... -
Systematics And Biogeography Of Scolopendrids Of The Western Ghats, India
(2013-06-25)In this thesis, the biogeography of the centipede family Scolopendridae of the Western Ghats (WG)was studied. First, a novel limited sampling approach to identify putative Gondwanan origin wherein sampling of was confined ... -
Trade-offs And Social Behaviour In The Cellular Slime Moulds
(2014-08-01)By combining laboratory experiments with field work, I have looked at the following aspects of cellular slime mould (CSM) biology: (a) the genetic structure of social groups (fruiting bodies) in the wild and its relation ... -
Tree Diameter Growth : Variations And Demographic Niches In A Tropical Dry Forest Of Southern India
(2009-08-03)Tree growth influences forest community dynamics and responses to environmental variations, but currently is not well understood. Tree growth in highly diverse wet tropical forests have been well studied and characterised ... -
Understanding Patterns of Bird Species Distribution in the Western Ghats
(2018-06-23)Macroecology is the study of relationships between organisms and the environment at large spatial and temporal scales. This field of research examines patterns in species abundance, distribution and diversity. Understanding ... -
Urbanisation and Shifting Phenotypes Behavioural, Physiological and Cognitive Strategies of the Indian Rock Agama Psammophilus Dorsalis
(2018-07-09)Humans directly or indirectly cause changes in the environment, and urbanisation is currently one of the most important threats to biodiversity. Urbanisation exposes organisms to novel pressures that are drastically different ...