scholarly journals Diversity and Distribution of liverworts across habitats and altitudinal gradient at Pachmarhi Biosphere Reserve (India)

2016 ◽  
Vol 3 (4) ◽  
pp. 354
Author(s):  
Reesa Gupta ◽  
Ashish Kumar Asthana
Keyword(s):  
Altitudinal Gradient ◽  
Biosphere Reserve ◽  
Central India ◽  
Altitudinal Gradients ◽  
Altitudinal Range ◽  
Pachmarhi Biosphere Reserve ◽  
Altitudinal Zone ◽  
Wet Rocks

The present study elucidates the distribution of liverworts (Marchantiophyta) in various habitats and across the altitudinal gradients at Pachmarhi Biosphere Reserve (PBR), central India. The liverwort diversity was assessed in selected habitats at each site viz. soil, wet rocks, dry rocks, soil covered rocks, stony walls (terricolous habitats) and epiphytic habitat. Three altitudinal gradients were considered for distributional assessment. In all, 41 liverworts belonging to 21 genera and 15 families were encountered. Among the three altitudinal zones, 17 taxa were found at lower altitudinal gradient (400-800 m) whereas 12 liverworts were found at the higher altitudinal gradient (1001-1400 m). Maximum taxa (33) were present at the middle altitudinal zone (801- 1000 m). The sites at middle altitudes furnished amicable conditions for the growth of bryophytes. In general, rocks, both moist and dry formed the most pertinent habitat for the liverworts. Evidently, the middle altitudinal gradient emerged as the altitudinal range harbouring maximum liverworts.

Diversity and Species Composition of Family Hypnaceae (Bryophyta) at Pachmarhi Sanctuary (India)

2018 ◽  
Vol 41 (4) ◽  
pp. 337-351
Author(s):  
Reesa Gupta ◽  
◽  
Virendra Nath ◽  
Neerja Pande ◽  
A.K. Asthana ◽  
...  
Keyword(s):  
Species Composition ◽  
Biosphere Reserve ◽  
Central India ◽  
Stem Bark ◽  
Current Status ◽  
The Family ◽  
Pachmarhi Biosphere Reserve ◽  
Terrestrial Habitats ◽  
Wet Rocks ◽  
Species Being

The present study elucidates the current status of moss family Hypnaceae in Pachmarhi Sanctuary that is part of the Pachmarhi Biosphere Reserve (PBR). On taxonomic assessment, Hypnaceae emerged as one of the dominant families of the Sanctuary with seven genera and 12 species being present. The diversity and species composition of the taxa was assessed on six selected habitats viz., soil, dry rocks, wet rocks, soil covered rocks, stony walls and stem bark (epiphytic). These mosses have been mostly encountered from terrestrial habitats. The species composition across the habitats was much dissimilar indicating towards higher diversity of the family at PBR. Presently, Ectropothecium cyperoides (Hook.) A. Jaeger, Ectropothecium rostellatum (Mitt.) A. Jaeger, Isopterygium assamicum (Mitt.) A. Jaeger, and Hypnum plumaeforme Wils. are new additions to the moss flora of central India.

Genus Schwetschkeopsis Broth. (Bryophyta): new addition to Central India

2016 ◽  
Vol 1 (2) ◽  
Author(s):  
Reesa Gupta
Keyword(s):  
Biosphere Reserve ◽  
Central India ◽  
Valid Species ◽  
Terrestrial Moss ◽  
South Indian ◽  
Pachmarhi Biosphere Reserve ◽  
First Time

The present work explicates three species of genus Schwetschkeopsis Broth. belonging to family Myriniaceae Schimp., which have been encountered for the first time in central India at Pachmarhi Biosphere Reserve. Previously, this genus was known to be distributed at Himalayan and South Indian bryogeographical regions of India with four valid species, of which none were reported from central India. The genus is important as it is the only genus of family Myriniaceae known from India out of the total seven known worldwide and this study highlights the extension of its range of distribution in the country. During the present study three taxa viz. Schwetschkeopsis fabronia (Schwaegr) Broth., Schwetschkeopsis formosana Nog., Schwetschkeopsis elongata (Dixon and P. Varde) P. Varde were identified from the Biosphere Reserve. S. fabronia was encountered as terrestrial moss growing on dry exposed rocks while S. formosana and S. elongata were epiphytic. The presence of three taxa of the important genus Schwetschkeopsis at central India accentuates the importance of the central Indian moss flora as out of four species present in India three occur in this zone.

Cyathodium denticulatum Udar et Srivastava: A rare liverwort new to Chhattisgarh, Central India

2020 ◽  
pp. 171-174
Author(s):  
Ashwini Kumar Dixit ◽  
Mery Aradhna Kerketta
Keyword(s):  
Rare Species ◽  
Biosphere Reserve ◽  
Central India ◽  
Himalayan Region ◽  
Taxonomic Description ◽  
First Time ◽  
Eastern Himalayan Region

This article reports the occurrence of the thalloid liverwort Cyathodium denticulatum Udar et Srivastava was collected first time from the Achanakmar – Amarkantak Biosphere Reserve (AABR) Bilaspur, Chhattisgarh. It is shown that Cyathodium denticulatum a narrow Himalayan endemic has been reported earlier from Darjeeling, India. There is no record of its occurrence from central India. Cyathodium denticulatum is a rare species known only from eastern Himalayan region. A key to related Indian taxa and taxonomic description is provided.

scholarly journals Habenaria diphylla (Nimmo) Dalzell: A new addition to the Orchid flora of Bilaspur district (C.G), Central India

2017 ◽  
Vol 8 ◽  
Author(s):  
S. Vinodia A.K. Dixit
Keyword(s):  
New Record ◽  
Biosphere Reserve ◽  
Central India

<em>Habenaria</em> <em>diphylla</em> (Nimmo) Dalzell , reported as a new record  to the orchid flora of  Bilaspur district of Achanakmar-Amarkantak Biosphere Reserve (Central India) . Brief description, illustrations and ecology are provided.

scholarly journals Modification of Fire Regimes Inferred from the Age Structure of Two Conifer Species in a Tropical Montane Forest, Mexico

Forests ◽  
2020 ◽  
Vol 11 (11) ◽  
pp. 1193 ◽  
Author(s):  
Jesús Eduardo Sáenz-Ceja ◽  
Diego Rafel Pérez-Salicrup
Keyword(s):  
Age Structure ◽  
Altitudinal Gradient ◽  
Biosphere Reserve ◽  
Fire Regimes ◽  
Monarch Butterfly ◽  
Pine Forests ◽  
Conifer Forests ◽  
Tree Establishment ◽  
Low Intensity ◽  
Mixed Conifer Forests

Research Highlights: Age structure was used to infer fire regimes in the Monarch Butterfly Biosphere Reserve. Uneven-aged structures in stands dominated and co-dominated by pine and fir species, which are distributed according to an altitudinal gradient, indicated a regime of frequent, low-severity, and low-intensity fires. Background and Objectives: Age structure analyses have been used to infer natural and disrupted fire regimes when field-based descriptions of fires are scarce or unavailable. In montane conifer forests, fire regimes typically vary according to an altitudinal gradient, shaping contrasting tree establishment patterns. In the Monarch Butterfly Biosphere Reserve, Mexico, the altitudinal distribution and fire regimes of sacred fir forests (Abies religiosa), smooth-bark Mexican pine forests (Pinus pseudostrobus), and mixed-conifer forests are poorly documented. The objectives of this study were to determine the altitudinal ranges occupied by mono-dominant and co-dominant stands and to reconstruct tree establishment history to infer historical fire regimes. Materials and Methods: Six altitudinal transects were established along the reserve, each one at elevations from 2400 to 3300 m, with sampling sites at every 150 m of elevation. In each site, increment cores were collected from the base of 25 mature trees. A total of 800 increment cores were collected and cross-dated. Results: P. pseudostrobus is dominant in stands between 2400 and 2850 m, A. religiosa between 3150 and 3300 m, and both species co-dominate between 2850 and 3150 m. The establishment pattern for both species has been continuous, represented by uneven-aged structures, suggesting that tree establishment in smooth-bark Mexican pine forests, mixed-conifer forests, and sacred fir forests, is likely to be associated with frequent, low-severity, and low-intensity fires. Conclusions: These fire regimes suggest, by the one hand, the disruption of natural fire regimes by human activities, limiting the occurrence of high-severity fires; on the other hand, a distinctive feature of these tropical montane forests.

Epiphytic Moss Flora of Pachmarhi Biosphere Reserve (M.P.): An Important Aspect of Bryophyte Diversity

2012 ◽  
Vol 35 (3) ◽  
pp. 195-200 ◽  
Author(s):  
Virendra Nath ◽  
Neerja Pande ◽  
A. K. Asthana ◽  
Reesa Gupta
Keyword(s):  
Biosphere Reserve ◽  
Pachmarhi Biosphere Reserve

Fine-scale altitudinal gradients influence the relationships between structural attributes and aboveground biomass in Central Africa

2021 ◽  
pp. 1-9
Author(s):  
Eymard Menanzala Miambam ◽  
Grace Jopaul Loubota Panzou ◽  
Yannick Enock Bocko ◽  
Jean Joël Loumeto
Keyword(s):  
Aboveground Biomass ◽  
Altitudinal Gradient ◽  
Central Africa ◽  
Permanent Plots ◽  
Stem Density ◽  
Clear Understanding ◽  
Fine Scale ◽  
Remotely Sensed Data ◽  
Altitudinal Gradients ◽  
The Republic

There is increasing interest in altitude effects on structural attributes and aboveground biomass (AGB) in tropical forests. However, we continue to lack a clear understanding of relationships between structural attributes and AGB along altitudinal gradients in Central Africa. Using a new network of 76 permanent plots of 0.5 ha, the relationships between structural attributes and AGB were explored along fine-scale altitudinal gradients in the Republic of Congo. We chose four fine-scale altitudinal gradients (71–350 m, 350–550 m, 550–650 m, and 650–853 m) and measured the diameter and heights of 4192 trees with a ≥10 cm diameter and calculated the structural attributes and the AGB for each 0.5 ha plot. For a given diameter, trees were shorter and had narrower crowns in the altitudinal gradient of 71–350 m than in the other altitudinal gradients. The relationships between structural attributes and AGB differ along fine-scale altitudinal gradients, with higher stem density, wood density, crown depth, and AGB for the altitudinal gradient of 71–350 m. These results provide important advances in our understanding of the relationships between structural attributes and AGB along fine-scale altitudinal gradients in Central Africa. They should improve AGB estimates for the low altitudinal gradient when combined with other field and remotely sensed data sets in Central Africa.

Adiantum Venustum D.Don (Adiantaceae): A New Distributional Record for Central India

2013 ◽  
Vol 36 (1) ◽  
pp. 139-141
Author(s):  
Arjun Tiwari ◽  
Brijesh Kumar ◽  
Achuta Shukla
Keyword(s):  
New Record ◽  
Biosphere Reserve ◽  
Central India

Adiantum venustum D.Don (Adiantaceae) is reported as a new record for the pteridophytic flora of Central India from Achanakmar-Amarkantak Biosphere Reserve. Detailed description, illustration and relevant notes are provided for its easy identification.

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