An inclusive mathematical representation for biodiversity (Record no. 6145)

MARC details
000 -LEADER
fixed length control field 04799nam a22001817a 4500
003 - CONTROL NUMBER IDENTIFIER
control field OSt
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20220107122842.0
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fixed length control field 180703b xxu||||| |||| 00| 0 eng d
040 ## - CATALOGING SOURCE
Transcribing agency IIITMK
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Personal name Vishnu M (91717012)
9 (RLIN) 14462
245 ## - TITLE STATEMENT
Title An inclusive mathematical representation for biodiversity
300 ## - PHYSICAL DESCRIPTION
Extent MPhil EI 2017-2018
500 ## - GENERAL NOTE
General note Biodiversity- the variety of life forms on the Earth underpins ecosystem services. Future <br/>of mankind is inseparably linked to biological diversity. However, human activities act as<br/>pressure points and strain other living organisms. Holistic understanding of biological<br/>diversity and their dynamics across time is important to plan and implement conservation<br/>measures. <br/>Whilst strategic plan for biodiversity 2011-2020 and its Aichi targets have been recognized as<br/>an integral component in Sustainable Development Goals, possibly due to paradox of plenty,<br/>the global indicator frameworks of biodiversity within SDGs is yet to identify any Tier I or II<br/>indicator for biodiversity assessment. It has become a convention to narrow down biological<br/>diversity measures to diversity indices. Most of the diversity indices proposed over years are<br/>probability functions and convey information about a single level. This report proposes a new<br/>inclusive representation of biodiversity and introduces Nair’s Measure of Biodiversity (NMB). <br/>A study was carried out within 11 sacred groves Pulikottukonam Nagar Kavu (PNK), Kavil<br/>Shree Maheswarashramam (KSMA), Erumakkavu (EK), Shree Bhadrakali Temple (SBT),<br/>Dharmasastha kavu (DK), Edayilekkadu kavu (EK), Poonkottukavu (PK),<br/>Muchukunnukottah (MK), Vallikkattukavu (VK), Iringole kavu (IK) and Amaramkavu Devi<br/>Temple (ADT) in Kerala during January – February 2018 to collect field data. The study was<br/>limited to tree species. Representative hemispherical photographs of the groves were also<br/>taken. Historical data of these groves (1993 and 2015) were also used for the study.<br/>Parameters from multiple levels have been effectively utilized to represent the diversity with<br/>more information content. <br/>The diversity within each grove was initially estimated using the traditional diversity indices<br/>over two periods. True diversity, expressed as effective number of species obtained from the<br/>Shannon index was different from Simpson index for all groves. The Present data shows that<br/>grove KSMA was most diverse and EK was least diverse. The groves EDK, MK, VK and<br/>ADT show similar diversity of 13 equally common species from Shannon index and groves<br/>EDK, MK and ADT show a similar true diversity of 9 equally common species from the<br/>Simpson index. <br/>The diversity observed across the groves using the old data was different from the current<br/>results. Similar to present results grove KSMA was most diverse and EK was least diverse for<br/>both the indices. But the diversity of these groves was higher than the present data. The<br/>groves IK and SBT shows similar true diversity from Shannon index and groves PK and VK<br/>show a similar true diversity from Simpson index. The grove EK and KSMA shows a <br/>maximum decrease of effective number of species for Shannon index <br/>and Simpson index<br/>respectively for the two periods. <br/>NMB takes into account the conservation <br/>status of species. The grove data obtained were<br/>classified as per IUCN conservation status and modified to new measures using mathematical<br/>transformations. Observed values were reduced to a single variable depicted by the solid<br/>angle (in Steradian) subtended by it on a plane. This ensured that there was no loss of<br/>information. This facilitates a reader to work back to arrive at the species composition within<br/>each site. <br/>The mean canopy openness calculated from the groves shows that grove ADT is most dense.<br/>Groves DK and MK show high canopy openness. But the standard errors associated with all<br/>groves are different. This clearly indicates the uneven distributions of species across the<br/>groves. <br/>The biodiversity representation introduced here includes multilevel diversity parameters such<br/>as effective number of species derived from the Shannon entropy (H' (en)), NMB, mean canopy<br/>openness at each location (μ(CO)) and total number of species (NS) with time stamp (in ordinal<br/>date (OD); YYYY-DDD). The representation takes the general form [H'(en)<br/>; NMB; μ(CO); NS;<br/>OD] and conveys more information than conventional diversity indices. Shannon effective<br/>number of species describes the stability of the ecosystem. NMB adds information at species<br/>level and mean canopy openness paints a picture of the thickness of stand. The time stamp<br/>renders inclusiveness and facilitates comparative studies. <br/>
502 ## - DISSERTATION NOTE
Degree type MPhil EI
Name of granting institution 2017-2018
Year degree granted INT
-- Dr. R. Jaishanker
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element BIODIVERSITY
9 (RLIN) 14463
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Topical term or geographic name entry element GROVES
9 (RLIN) 14464
942 ## - ADDED ENTRY ELEMENTS (KOHA)
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    Dewey Decimal Classification     Non Fiction IIITM-K Kerala University of Digital Sciences, Innovation and Technology Knowledge Centre   03/07/2018   R-1429 03/07/2018 03/07/2018 Project Reports