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Malleshappa, H.
- Floral Biology and Floral Visitors of Psychotria nilgiriensis var. astephana (Hook. f.) Deb et Gang. (Rubiaceae) from Kalakad Mundanthurai Tiger Reserve, Southern Western Ghats, India
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Indian Forester, Vol 137, No 9 (2011), Pagination: 1049-1055Abstract
The present study is a preliminary work highlighting the floral biology of Psychotria nilgiriensis var. astephana (Hook. f.) Deb et Gang., where the floral characters such as the floral type, shape symmetry, colour, pollen morphology, pollen production, pollen - ovule ratio were studied. The flowers received 22 species of insects as diurnal floral visitors, predominantly butterflies (11 species) followed by bees (4 species), Flies (3 species), Ants (2 species), wasp and beetle (1 species each). Apis cerana, Appias wardi, Ypthima sp. and a species of wasp accounted for highest percentage of total visits to the blossoms. The most favourable temperature range with diverse community of floral visitors and maximum floral visits was between 25°C and 32°C. Observations based on the foraging behaviour of floral visitors as well as the number of visits shows that Appias wardi, Ypthima sp., wasp, Apiscerana and Lasioglossum sp. presumably the important pollinators of P. nilgiriensis var. astephana.Keywords
Psychotria, Floral Reward, Floral Visitor, Pollinator- Relationship between Floral Characters and Floral Visitors of Selected Angiospermic Taxa from Kalakad Mundanthurai Tiger Reserve, Southern Western Ghats, India
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Indian Forester, Vol 137, No 8 (2011), Pagination: 962-975Abstract
Diurnal floral visitors of 27 woody Angiosperms wet'e observed from Kalakad Mundanthurai Tiger Reserve (KMTR), Southern Western Ghats, Tirunelveli District, between 2008 and 2010. The foraging profiles of floral visitors as well as the flower characters were analysed. It was found that although visitor profiles were sometimes consistent with classic pollination syndromes, these syndromes were unreliable predictors of floral visitors. The majority of flowering plants was unspecialized in their morphology, and consequently hosted a diverse array of visitors. Bees being the potential pollinators visited species with purple or pink flowers that are not strictly confirm to the melittophilous syndrome. Bright coloured, tubular flowers were associated with birds, with more accessible nectar. Ants were noted as nectar thieves in some plants. Altitude was a major factor in determining visitors, with flies being the most abundant visitors of m any plant species, while others received very few potential pollen vectors.Keywords
KMTR, Trees, Floml Reward, Floral ViSitor, Pollinator- Distribution, Population and Ecology of Decalepis aryalpathra (Joseph & Chandras.) Vent. (Periplocoideae) in Kalakad Mundanthurai Tiger Reserve, Southern Western Ghats, India
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Indian Forester, Vol 139, No 6 (2013), Pagination: 483-486Abstract
Based on the floristic survey conducted, Decalepis arayalpathra (Joseph & Chandras.) Vent., an endemic and endangered species of southern Western Ghats found to be distributed in (1) near Vellachipudavu, on the way to Aduppukal mottai, (2) Oothu, above Amman kovil, (3) Visthara mottai, above Naraikadu and (4) Thaipatham mottai, above Nambi Koil of Kalakad Mundanthurai Tiger Reserve. A total of 932 individuals were recorded from the sample plots established in these four sites. Among these more number of individuals were recorded from Thaipatham followed by Visthara mottai, Vellachipudavu and Oothu. Many populations of this species were also sighted in the inaccessible areas of Thaipatham and Vellachipudavu. Asparagus gonocladus, Eriocaulon ensiforme, Exacum atropurpureum, Hedyotis purpurascens, Osbeckia wightiana etc. are some of the associated species of D. arayalpathra. The tubers of this species are found to be eaten up by wild boars at Vellachipudavu. Though there are many individuals recorded, the populations are still limited and fragmented extensively. The lag in the regeneration as well as continuous harvest of tubers for medicinal use leads to the drastic reduction in the population size of this species.Keywords
Decalepis arayalpathra, Endemic, Distribution, Population, KMTR- Melissopalynological Studies from Kalakad-mundanthurai Tiger Reserve (KMTR), Southern Western Ghats, India
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Affiliations
1 Department of Plant Biology and Plant Biotechnology, Madras Christian College, Chennai - 600 059, IN
2 Department of Plant Biology and Plant Biotechnology, St. John's College, Tirunelveli - 627 002, IN
3 Department of Environment, Government of Tamil Nadu, Chennai - 600 015, IN
1 Department of Plant Biology and Plant Biotechnology, Madras Christian College, Chennai - 600 059, IN
2 Department of Plant Biology and Plant Biotechnology, St. John's College, Tirunelveli - 627 002, IN
3 Department of Environment, Government of Tamil Nadu, Chennai - 600 015, IN
Source
Indian Forester, Vol 140, No 12 (2014), Pagination: 1153-1159Abstract
Pollen analysis of four honey samples (IK, KH, KK and TP) from Kalakad-Mundanthurai Tiger Reserve (KMTR) was undertaken to determine the floral source and to identify the pollen types in order to find the ecological origin of honey sample. The honey samples were collected from the honey comb remnants of Apis cerana, Apis dorsata and Trigona iridipennis honey bee species during 2008 - 2010 at different locations of Mundanthurai Range, KMTR. A total of 26 pollen types belonging to 21 angiosperm families and one gymnosperm family (Gnetaceae) were identified. The most commonly represented pollen types in the honey samples are Mallotus, Syzygium and Trema. The occurrence of semievergreen and wet evergreen pollen types in the honey samples such as Calophyllum, Elaeocarpus, Gnetum, Myristica and Strobilanthes determine the ecological origin of the honey.Keywords
Melissopalynology, Honey, Pollen Analysis, KMTR- Coral Mortality in the Gulf of Mannar, Southeastern India, Due to Bleaching Caused by Elevated Sea Temperature in 2016
Abstract Views :255 |
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Authors
J. K. Patterson Edward
1,
G. Mathews
1,
K. Diraviya Raj
1,
R. L. Laju
1,
M. Selva Bharath
1,
A. Arasamuthu
1,
P. Dinesh Kumar
1,
Deepak S. Bilgi
2,
H. Malleshappa
3
Affiliations
1 Suganthi Devadason Marine Research Institute, 44-Beach Road, Tuticorin 628 001, IN
2 Gulf of Mannar Marine National Park, Ramanathapuram 623 503, IN
3 Department of Environment, Govt of Tamil Nadu, Chennai 600 015, IN
1 Suganthi Devadason Marine Research Institute, 44-Beach Road, Tuticorin 628 001, IN
2 Gulf of Mannar Marine National Park, Ramanathapuram 623 503, IN
3 Department of Environment, Govt of Tamil Nadu, Chennai 600 015, IN
Source
Current Science, Vol 114, No 09 (2018), Pagination: 1967-1972Abstract
Intensive underwater surveys have been conducted to assess the extent of coral bleaching and subsequent mortality in the Gulf of Mannar between March and October 2016. The extent of bleaching was 23.92% ± 10.55% during the period between March and June 2016, and the live coral cover was drastically reduced to 22.69 ± 9.07% during October 2016 with a mortality of 16.17 ± 8.46%. Fast-growing coral forms, including the genera Acropora, Montipora and Pocillopora were most affected, not only by bleaching but also by severe mortality. Boulders, including the genera Porites, Favia and Favites were found to be resistant to bleaching. During the bleaching period, water temperature was between 31.2°C and 32.6°C. The current bleaching is in alignment with the third global coral bleaching event which occurred between 2014 and 2017. Management interventions, including protection and rehabilitation using the native resistant coral species will not only help in the recovery process, but also increase the live coral cover.Keywords
Bleaching, Climate Change, Coral Reefs, Mortality, Sea Surface Temperature.References
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