scholarly journals Phenology of Leaf Flushing, Flower Initiation and Fruit Maturation in Dry Deciduous and Evergreen Forests of Bhadra Wildlife Sanctuary, Karnataka, Southern India

Our Nature ◽  
1970 ◽  
Vol 9 (1) ◽  
pp. 89-99 ◽  
Author(s):  
A. Nanda ◽  
H.M. Prakasha ◽  
Y.L. Krishna Murthy ◽  
H.S. Suresh
Keyword(s):  
Tree Species ◽  
Dry Forest ◽  
Evergreen Forest ◽  
Flower Initiation ◽  
Forest Types ◽  
Fruit Maturation ◽  
Wildlife Sanctuary ◽  
Leaf Initiation ◽  
Evergreen Forests ◽  
Bhadra Wildlife Sanctuary

Varying with altitude and rainfall of two forest types of tropical forest were studied. Community wide pattern in both vegetative and reproductive phenophases among various tree species of Bhadra wildlife sanctuary, Karnataka is reported here. Leaf initiation peaks in the month of April in dry forest, after leaf less period of 1-2 months, in evergreen forest leaf initiation peaks in the month of January simultaneously with leaf senescence. Flower initiation begins from January till June with a peak in April in dry forest. Evergreen forest starts from November to march with a peak in January and February. Fruit maturation in dry forest starts from March to December with a peak in August and November, in evergreen forest from January to July with a peak in April.DOI: http://dx.doi.org/10.3126/on.v9i1.5738

scholarly journals Using birds to set conservation priorities for Pantanal wetland forests, Brazil

2011 ◽  
Vol 22 (2) ◽  
pp. 155-169 ◽  
Author(s):  
JOÃO BATISTA DE PINHO ◽  
MIGUEL ÂNGELO MARINI
Keyword(s):  
Bird Species ◽  
Dry Forest ◽  
Evergreen Forest ◽  
Conservation Priorities ◽  
Forest Types ◽  
Dry Forests ◽  
Point Counts ◽  
Evergreen Forests ◽  
Local Species Richness ◽  
Bird Richness

SummaryThe Pantanal of Brazil, one of the largest wetlands in the world, is suffering severe threats, such as forest and grassland clearance on the surrounding plateau, conversion of forests and savannas for cattle ranching and effects of large development projects. We used richness, abundance and composition of bird species in four forest types to propose conservation priorities for the northern Pantanal. Birds from 11 sites (a total of 41 points) were sampled through point counts and mist-netting. In total 215 species were recorded in the forests. Two evergreen forest types (cambarazal and landi) had higher estimates of bird richness and abundance than two dry forest types (carvoeiro and cordilheira). The evergreen forests also had more species exclusive to them and were more similar to each other than the dry forests. Selection of forests to be conserved in the northern Pantanal should give priority to evergreen forests and secondarily to dry forests. Cambarazal should be the first forests to be conserved. If the Pantanal inundation cycle is altered by the construction of hydroelectric dams or the Paraguay-Paraná waterway, cambarazal and landi may no longer become flooded, decreasing local species richness. Before our recommendations are considered for conservation and management decisions, more studies on other groups of organisms should also be taken into consideration, and similar studies should be conducted in other regions of the Pantanal. Conservation of Pantanal forest birds depends on a deeper understanding of their use of several habitats, stronger protection of the forests with higher diversity, and public policies that guarantee the long term maintenance of natural flooding cycles.

scholarly journals Effect of Disturbance Regimes on Spatial Patterns of Tree Species in Three Sites in a Tropical Evergreen Forest in Vietnam

2016 ◽  
Vol 2016 ◽  
pp. 1-16 ◽  
Author(s):  
Do Thi Ngoc Le ◽  
Nguyen Van Thinh ◽  
Nguyen The Dung ◽  
Ralph Mitlöhner
Keyword(s):  
Spatial Patterns ◽  
Tree Species ◽  
Interspecific Interactions ◽  
Abundant Species ◽  
Evergreen Forest ◽  
Small Scale ◽  
Forest Types ◽  
Disturbance Regimes ◽  
Tropical Evergreen Forest ◽  
Disturbed Forest

The effects of disturbance regimes on the spatial patterns of the five most abundant species were investigated in three sites in a tropical forest at Xuan Nha Nature Reserve, Vietnam. Three permanent one-ha plots were established in undisturbed forest (UDF), lightly disturbed forest (LDF), and highly disturbed forest (HDF). All trees ≥5 cm DBH were measured in twenty-five 20 m × 20 m subplots. A total of 57 tree species belonging to 26 families were identified in the three forest types. The UDF had the highest basal area (30 m2 ha−1), followed by the LDF (17 m2 ha−1) and the HDF (13.0 m2 ha−1). The UDF also had the highest tree density (751 individuals ha−1) while the HDF held the lowest (478 individuals ha−1). Across all species, there were 417 “juveniles,” 267 “subadults,” and 67 “adults” in the UDF, while 274 “juveniles,” 230 “subadults,” and 36 “adults” were recorded in the LDF. 238 “juveniles,” 227 “subadults,” and 13 “adults” were obtained in the HDF. The univariate and bivariate data with pair- and mark-correlation functions of intra- and interspecific interactions of the five most abundant species changed in the three forest types. Most species indicated clumping or regular distributions at small scale, but a high ratio of negative interspecific small-scale associations was recorded in both the LDF and HDF sites. These were, however, rare in the UDF.

Dry forest is more threatened but less protected than evergreen forest in Ecuador’s coastal region

2020 ◽  
Vol 47 (2) ◽  
pp. 79-83 ◽  
Author(s):  
Carlos A Rivas ◽  
Rafael M Navarro-Cerillo ◽  
Jon C Johnston ◽  
José Guerrero-Casado
Keyword(s):  
Protected Areas ◽  
Endemic Species ◽  
Conservation Status ◽  
Coastal Region ◽  
Dry Forest ◽  
Evergreen Forest ◽  
National Strategy ◽  
Dry Forests ◽  
Evergreen Forests

SummaryThe Ecuadorian coast has two main types of forests, which are differentiated by their phenology: dry forests are deciduous and more humid forests are evergreen. Less of the dry forests on the Ecuadorian coast is protected (13% of its area) than the evergreen forests (28%), and the area devoted to the protection of dry forests (1069 km2) is substantially less than the area devoted to the protection of evergreen forests (2800 km2). Yet the conservation status of dry forests is more critical, with 83% of their area classified as having very low connectivity, 70% as being highly fragile and 86% as being highly threatened. In addition, the dry forests have fewer protected areas than the evergreen forests. It is therefore necessary to increase the protection of deciduous ecosystems as part of a comprehensive national strategy because they support high levels of biodiversity and many endemic species.

scholarly journals Assessment of tree species diversity and above-ground biomass in two disturbed tropical dry evergreen forests of Coromandel coast of India

2021 ◽  
Vol 13 (3) ◽  
pp. 981-992
Author(s):  
Elumalai Pandian ◽  
Narayanaswamy Parthasarathy ◽  
Balaraman Tamil Selvan
Keyword(s):  
Species Diversity ◽  
Tree Species ◽  
Woody Plants ◽  
Carbon Stock ◽  
Dominant Species ◽  
Evergreen Forest ◽  
Total Density ◽  
Tree Species Diversity ◽  
Evergreen Forests ◽  
Coromandel Coast

The tree diversity and carbon stock of all woody plants were investigated in two-hectare square plots (100 m x 100 m) were established in Suryanpet (SP) and Velleripet (VP) which is tropical dry evergreen forest (TDEF) sites on the Coromandel Coast of peninsular India. All trees ? 10 cm girth at breast height measured at 1.3 m from the rooting point were enumerated. A total of 35 tree species (? 10 cm gbh) belonging to 34 genera and 23 families were recorded in tropical dry evergreen forests. Tree species richness in 27 (dominant species Dimorphocalyx glabellus Thw.) and 18 (dominant species Strychnos nux-vomica L.) in SP and VP respectively. A total density of woody plants 671 and 1154 individuals in SP and VP respectively. The basal area of trees in the two study sites SP (40.70 m2 ha-1) and VP (45.46 m2 ha-1). Most abundant families are Loganiaceae, Euphorbiaceae and Rutaceae and its family index value (FIV) is 56.14, 39.12 and 21.40 respectively. The aboveground biomass (AGB) of trees totaled in site SP (405.3 Mg ha-1) and VP (721.3 Mg ha-1). The extent of tree species diversity and estimated carbon stock of the TDEF sites, which provides the baseline data on the floristic structure and diversity of this forest for better management and conservation.

Successional sequence of forest types in a disturbed dry forest reserve in southern Benin, West Africa

2001 ◽  
Vol 17 (4) ◽  
pp. 525-539 ◽  
Author(s):  
CHRISTIAN NANSEN ◽  
ATTI TCHABI ◽  
WILLIAM G. MEIKLE
Keyword(s):  
Tree Species ◽  
Hierarchical Classification ◽  
Dry Forest ◽  
Forest Types ◽  
Forest Patches ◽  
Forest Reserve ◽  
Tree Species Composition ◽  
Disturbed Forest ◽  
Lama Forest ◽  
Southern Benin

Human pressure on forest resources in southern Benin has led to a dramatic reduction and disturbance of natural forest patches. The largest remaining forest reserve in southern Benin is the Lama forest, which is known to be a reserve for many endangered species and situated in the boundary between dry forest and savanna. From cluster analysis and hierarchical classification of tree species composition, five forest types were identified in the Lama forest, and ordination techniques were used to determine to what extent these forest types were associated with physiognomic tree characteristics. The geographical position of vegetation plots was used to examine the spatial distribution of the identified forest types. The forest types were interpreted as levels in a successional sequence ranging from either disturbed forest or formerly cultivated farmland to dense forest. Based on the outlined succession sequence it was suggested that reforestation should focus on establishment of Anogeissus leiocarpus, Albizia zygia, Lannea nigritana, Ficus exasperata and Lonchocarpus sericeus as these tree species are associated with the initial forest types.

scholarly journals Floristic diversity of Bhimashankar Wildlife Sanctuary, northern Western Ghats, Maharashtra, India

2017 ◽  
Vol 9 (8) ◽  
pp. 10493
Author(s):  
Savita Sanjaykumar Rahangdale ◽  
Sanjaykumar Ramlal Rahangdale
Keyword(s):  
Western Ghats ◽  
Geographic Area ◽  
Floristic Diversity ◽  
Forest Types ◽  
Wildlife Sanctuary ◽  
Evergreen Forests ◽  
Threat Categories ◽  
The Rich ◽  
Rich Flora ◽  
The Western Ghats

Bhimashankar Wildlife Sanctuary (BWS) is located on the crestline of the northern Western Ghats in Pune and Thane districts in Maharashtra State.  It was notified in October 1985 towards conservation of the state animal of Maharashtra, the Giant Squirrel Ratufa indica ssp. elphinstonii.  Although an important protected area in the Western Ghats, due to the lack of a comprehensive report, an assessment of floristic diversity of BWS was done from 2009 to 2016.  The results revealed that forest types and microhabitats are diverse in the sanctuary.  Major forest types are western subtropical broad leaved hill forest to moist deciduous types with a few included small patches of evergreen forests.  The rich flora of the sanctuary is represented by a total of 1,142 angiospermic taxa at species and infraspecific level spread over 619 genera and 124 families.  Of these 1,094 taxa are wild, which belong to 118 families and 586 genera.  Rest of the taxa are planted (34), and 14 introduced.  The taxa are classified as per the APG IV.  The  wild taxa include 20 magnolids, 285 monocots, one Ceratophyllales and 788 eudicots.  Out of these, 217 taxa are Indian endemics; which comprise about 19.84% of the total number of wild taxa (1,094) in the sanctuary and 5.04% of total Indian endemics (4,303).  Total 53 taxa are under different threat categories according to IUCN.  BWS harbours a significant extent of angiosperms in a very small geographic area.

scholarly journals Butterflies associated with major forest types in Arunachal Pradesh (eastern Himalaya), India: implications for ecotourism and conservation planning

2017 ◽  
Vol 9 (4) ◽  
pp. 10047 ◽  
Author(s):  
Arun P. Singh
Keyword(s):  
Relative Abundance ◽  
Forest Type ◽  
The State ◽  
Eastern Himalaya ◽  
Evergreen Forest ◽  
Arunachal Pradesh ◽  
Forest Types ◽  
State Planning ◽  
Evergreen Forests ◽  
Number Of Species

A three year study (from December 2011 to December 2014 and in June 2015) on butterflies covering four major forest sub-types as classified by H.G. Champion & S.K. Seth in 1968 in ‘Forest Types of India’, which occupy 60% of the forest area lying below 2,500m across Arunachal Pradesh State in the eastern Himalaya of India, revealed 415 taxa belonging to six families (Hesperiidae: 74 species of 42 genera; Papilionidae: 37 species of 10 genera; Pieridae: 36 species of 15 genera; Lycaenidae: 85 species of 49 genera; Riodinidae: 7 species of 3 genera & Nymphalidae: 176 species of 71 genera, respectively).  These included many endemic and rare species typical of these forest sub-types, i.e., (i) 2B/1S1 Sub-Himalayan Light Alluvial Semi-Evergreen Forest (32 species), (ii) 2B/ C1(a) Assam Alluvial Plains Semi-Evergreen Forests (5 species), (iii) 2B/2S2 Eastern Alluvial Secondary Semi-Evergreen Forests- (15 species) and (iv) 3/1S2 (b) Terminalia-Duabanga (3 species), respectively.  The relative number of species and individuals sampled were the highest at altitudes below 500m, and gradually declined as the altitude increased to 2,000m, and above 2,500m species richness declined sharply.  The number of species and their relative abundance were the highest during July–August (Monsoon-first peak) and then again in November-December (Autumn-second peak), while the numbers were lowest during winter.  These findings suggest that these four forest types are important both for the purpose of ecotourism as well as conservation of endemic and rare taxa found in the eastern Himalaya and northeastern India at altitudes below 2,000m.  A complete list of all the taxa sampled is given along with relative abundance status during sampling, Indian Wildlife (Protection) Act, 1972 status, and distribution in different forest types in the state.  Ten potential butterfly ecotourism zones are suggested for the state.  Planning land-use for biodiversity conservation based on butterfly-forest type associations, by taking forest sub-types as units of conservation, is suggested as an option for the eastern Himalaya.

scholarly journals Comparative assessment of floristic structure, diversity and regeneration status of tropical rain forests of Western Ghats of Karnataka, India

2013 ◽  
Vol 5 (1) ◽  
pp. 157-164 ◽  
Author(s):  
B. N. Sathish ◽  
Syam Viswanath ◽  
C.G. Kushalappa ◽  
M. R. Jagadish ◽  
K. N. Ganeshaiah
Keyword(s):  
Tree Species ◽  
Western Ghats ◽  
Forest Cover ◽  
Diversity Indices ◽  
Evergreen Forest ◽  
Tropical Rain Forests ◽  
Evergreen Forests ◽  
Regeneration Status ◽  
Central Western Ghats ◽  
The Western Ghats

Tropical forests are one of the richest landscapes in terms of its richness, diversity and endemicity. The present study was carried out in the Central Western Ghats: one of the hottest hotspot of biodiversity. The aim of the study was to compare floristic diversity in tropical wet evergreen forest between northern and southern parts of Western Ghats of Karnataka. Kodagu district in southern part and Uttara Kannada district in northern part was chosen to assess the same, as these two districts cover highest forest cover in the Western Ghats of Karnataka. In each district all the evergreen forests were sampled with 1000 m X 5 belt transacts. Totally 22 such samplings were done both southern and northern part of Western Ghats. In each of these transacts all the trees measuring e” 30 gbh were enumerated and botanically identified to the species level and the same was used for computation of diversity indices. The richness and diversity was comparatively higher in southern part compared to northern part of Western Ghats, where as the richness of threatened tree species was comparatively higher in northern part of Western Ghats. In addition to the species richness and diversity, the paper also deals with the dominant tree species and families in both the region.

scholarly journals The floristics of Sand Forest in northern KwaZulu-Natal, South Africa

Bothalia ◽  
1999 ◽  
Vol 29 (2) ◽  
pp. 293-304 ◽  
Author(s):  
D. Kirkwood ◽  
J. J. Midgley
Keyword(s):  
South Africa ◽  
Full Range ◽  
Tropical Dry Forest ◽  
Dry Forest ◽  
Forest Types ◽  
Evergreen Forests ◽  
Kwazulu Natal ◽  
Sand Forest ◽  
Cohesive Group ◽  
Subdominant Species

We use multivariate analyses (ordination and classification) to assess both the floristic uniqueness of the woody vegeation of Sand Forest in relation to a range of other forest types in the region, and the range of variation within Sand Forest. Two broad Sand Forest subtypes and related Ecotonal Forests are described and grouped under the term Tropical Dry Forest, distinct from all evergreen forests in South Africa. Sand Forest, a dry semi-deciduous type in northeastern KwaZulu-Natals defined by the presence of the canopy dominant Cleistanthus schlechteri as well as Hymenocardia ulmoides, Psydrax fragrantissima, Croton pseudopulchellus and  Drypetes arguta. Sand Forests form a cohesive group in both DCA and TWINSPAN analyses, with similar composition of canopy dominants at sampled sites. This implies that ecological funcioning is similar across the geographical range in northeastern KwaZulu-Natal. However, turnover of subdominant species between recognisable Sand Forest types emphasizes the need to conserve the full range of extant forests.

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