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dc.contributor.advisorBagchi, Sumanta
dc.contributor.authorBaidya, Pronoy
dc.date.accessioned2022-04-04T04:37:24Z
dc.date.available2022-04-04T04:37:24Z
dc.date.submitted2021
dc.identifier.urihttps://etd.iisc.ac.in/handle/2005/5676
dc.description.abstractThis study investigates beta diversity and its partitions to quantify the influence of different processes that drive spatial and temporal variation in ground-dwelling arthropod assemblages. First, ant assemblages across Goa, India, were studied to quantify how different species and functional groups, and human land use contribute to beta diversity over large spatial scales, and whether exotic species have a disproportionate influence on beta diversity. Human land use strongly influenced diversity and distribution of ant assemblages. Human land use spared local species richness, but not functional groups. A small number of exotic species exerted negative influence even in a very speciose community. Second, intra-annual variation in beta diversity and its partitions of ant communities was studied across three seasons in Bhagwan Mahaveer Wildlife Sanctuary, Goa, India, to quantify how loss and gain of species leads to functional redundancy. Ant community composition was highly variable at seasonal scales. But ecological roles were maintained across seasons by species with redundant functional traits. Third, effect of human altered land use on temporal beta diversity and its partitions of ground dwelling arthropods was quantified in the coupled human-natural Trans-Himalayan ecosystem in Spiti, northern India. Human land use altered seasonal trajectories of community dynamics and influenced beta diversity at the taxonomic level. But functional roles were spared due to species replacement and redundancy in traits. Together, the three chapters of this thesis show that community composition rather than species richness is a better indicator of how arthropods respond to human land use. They also establish functional redundancy to be an important feature of ecological resilience and resistance that can be affected by human land use.en_US
dc.description.sponsorshipMHRD, DBT-IISc partnership, DST-FIST, DSTSERB, MoEFCC, CEE- GOAen_US
dc.language.isoen_USen_US
dc.rightsI grant Indian Institute of Science the right to archive and to make available my thesis or dissertation in whole or in part in all forms of media, now hereafter known. I retain all proprietary rights, such as patent rights. I also retain the right to use in future works (such as articles or books) all or part of this thesis or dissertationen_US
dc.subjectEcologyen_US
dc.subjectAnten_US
dc.subjectBeta diversityen_US
dc.subject.classificationResearch Subject Categories::NATURAL SCIENCES::Biology::Other biologyen_US
dc.titleGround-dwelling arthropods across human land use: Interpreting the spatial and temporal dimensions of beta diversityen_US
dc.typeThesisen_US
dc.degree.namePhDen_US
dc.degree.levelDoctoralen_US
dc.degree.grantorIndian Institute of Scienceen_US
dc.degree.disciplineFaculty of Scienceen_US


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