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Structure and regeneration status of mangrove patches along the estuarine and coastal stretches of Kerala, India

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Field Value
 
Relation http://eprints.cmfri.org.in/12493/
https://link.springer.com/article/10.1007/s11676-018-0600-2/fulltext.html
 
Title Structure and regeneration status of mangrove patches
along the estuarine and coastal stretches of Kerala, India
 
Creator George, Grinson
Krishnan, P
Mini, K G
Shyam, S Salim
Ragavan, P
Tenjing, S Y
Muruganandam, R
Dubey, S K
Gopalakrishnan, A
Purvaja, R
Ramesh, R
 
Subject Mangroves
 
Description This study presents the structural characteristics
and regeneration potential of mangrove patches in the
estuarine and coastal areas of Kerala, a tropical maritime
state in India. Field surveys were carried out at 46 selected
sites during August 2015 to May 2016. In each site, the
vegetative structure and regeneration status were assessed
using the quadrat method. Altogether 219 quadrates were
laid out and a total of 13 true mangrove species, belonging
to 5 families and 8 genera, were recorded. The total tree
density and stand basal area of the study region was
1678.08/ha and 20.33 m2/ha respectively. The low basal
areas indicate the reduced structural development in mangroves.
Of the 13 tree species, Avicennia constitutes 56%
of the total Important Value Index (IVI) and Avicennia
officinalis represents 41% of the IVI in Kerala, followed by
Avicennia marina (15%), Rhizophora mucronata (15%),
Sonneratia alba (8%) Rhizophora apiculata (7%) and Excoecaria
agallocha (7%). The diameter at breast height
(DBH) in the study area revealed that 47% of the tree
species came under the 1–10 cm DBH class. Total sapling
and seedling density in Kerala was 2238.35 and 3232.42
individuals/ha respectively. Density of young plants (seedlings
? saplings) was only 31% greater of tree density
and varied from 3–63%, which indicates poor regeneration
potential. The Maturity index value (MIV) and complexity
index (Ic) value of mangroves were 18.30 and 109.81
respectively. However, the low Ic value (\10) observed in
seven out of ten coastal districts indicated poor structural
development of mangroves in Kerala. Therefore, locationspecific
conservation and management measures, guided
by the knowledge on spatial distribution and habitat
requirements of mangrove varieties should be taken to
preserve the mangrove diversity of Kerala.
 
Publisher Springer
 
Date 2018
 
Type Article
PeerReviewed
 
Format text
 
Language en
 
Identifier http://eprints.cmfri.org.in/12493/1/Gopalakrishnan_A_Grison%20Goerge_2018_Journal%20of%20Forestry%20Research_Mangroves.pdf
George, Grinson and Krishnan, P and Mini, K G and Shyam, S Salim and Ragavan, P and Tenjing, S Y and Muruganandam, R and Dubey, S K and Gopalakrishnan, A and Purvaja, R and Ramesh, R (2018) Structure and regeneration status of mangrove patches along the estuarine and coastal stretches of Kerala, India. Journal of Forestry Research. pp. 1-12.