scholarly journals Habitat selection of Himalayan Musk Deer Moschus leucogaster (Mammalia: Artiodactyla: Moschidae) with respect to biophysical attributes in Annapurna Conservation Area of Nepal

2021 ◽  
Vol 13 (7) ◽  
pp. 18703-18712
Author(s):  
Bijaya Neupane ◽  
Nar Bahadur Chhetri ◽  
Bijaya Dhami
Keyword(s):  
Endangered Species ◽  
Management Strategies ◽  
Mixed Forest ◽  
Habitat Characteristics ◽  
Musk Deer ◽  
Importance Value Index ◽  
Importance Value ◽  
Conservation Area ◽  
Preferred Habitat ◽  
Annapurna Conservation Area

Himalayan or White-bellied Musk Deer Moschus leucogaster, an IUCN indexed endangered species, is distributed in isolated pockets in the Himalaya. The deer population is decreasing owing to several pressures that include habitat loss and fragmentation, and poaching. It is essential to identify preferred habitat characteristics to support appropriate management strategies for conserving this endangered species. This study was carried out in the Nysheang basin of Annapurna Conservation Area of Nepal to identify habitats preferred by the musk deer. Habitat field parameters were collected using transect surveys. To analyze vegetation use and availability, nested quadrate plots size 20 m2 were established. Ivlev’s electivity index (IV) (-1 to +1) was employed to determine habitat preference, and one-way ANOVA (F) and chi-square tests (χ2) were used to examine different habitat parameters. Similarly, the importance value index (IVI) of the vegetation was calculated. Our results showed that the Himalayan Musk Deer strongly preferred habitats at 3601–3800 m altitude (IV= 0.3, F= 4.58, P <0.05), with 21–30º slope (IV= 0.2, F= 4.14, P <0.05), 26–50 % crown cover (IV= 0.25, F= 4.45, P <0.05), 26–50 % ground cover (IV= 0.15, F= 4.13, P <0.05), and mixed forest (IV= 0.29, χ2= 28.82, df= 3, p <0.001). Among the trees, Abies spectabilis (IVI= 74.87, IV= 0.035) and Rhododendron arboretum (IVI= 55.41, IV= 0.02) were the most preferred, while Rhododendron lepidotum, Cassiope fastigiata (IV= 0.35) and Berberis aristata (IV= 0.25) were the most preferred shrubs, and Primula denticulata (IV= 0.87) and Primula rotundifolia (IV= 0.31) were the most preferred herbs. These preferred habitat conditions should be maintained and conserved to sustain a viable population of deer in the study area. Further studies will be required to assess the effects of climate change on habitat suitability. 

scholarly journals Population Density, Habitat Characteristics and Preferences of Red Fox (Vulpes vulpes) in Chakwal, Pakistan

2020 ◽  
Vol 7 (4) ◽  
pp. 74-83
Author(s):  
AMIR NASEER ◽  
MUHAMMAD BILAL ◽  
UMAR NASEER ◽  
NAUREEN MUSTAFA ◽  
BUSHRA ALLAH RAKHA
Keyword(s):  
Population Density ◽  
Vulpes Vulpes ◽  
Red Fox ◽  
Estimation Method ◽  
Habitat Destruction ◽  
Habitat Characteristics ◽  
Line Transect ◽  
Importance Value Index ◽  
Preferred Habitat ◽  
Study Sites

The Red fox (Vulpes vulpes) is a least concern carnivore according to the IUCN Red List of Threatened Species (2016). However, in Pakistan Red fox is considered as Near Threatened (NT), due to habitat destruction and depletion of food resources. The objective of the study was to identify habitat preferences and population density of Red fox in District Chakwal, Pakistan. Line transect census method was used to estimate the population density of Red fox through direct sighting and indirect method of burrow counting, presence of footprints and scats. A total of 10 transects were carried out at three potential sites: Devi, Photaki and Chumbisurla Wildlife Sanctuary (CWS) in Chakwal based on preliminary surveys. Habitat preference was estimated by comparing three different study sites by quadrat method and found that CWS area is preferred habitat for Red fox. A total of 24 plant species were recorded in the study areas, among them Cynodon dactylon is major herb found to provide shelter to Red fox in all study sites based on Importance value Index (I.V.I) at CWS (IVI=208.8) followed by Devi (IVI=185.93) and Photaki (IVI=142.33). The maximum population density of Red fox through direct sighting at CWS having 0.26 individuals/km2 compared to Devi and Photaki having 0.16 and 0.13 individuals/km2, respectively. The indirect estimation method revealed that maximum dens were found in CWS area compared to Devi and Photaki, while footprints and scats were found maximum in Devi and Photaki, respectively. It is concluded that Red fox preferred habitat is CWS site. Habitat destruction and conflicts with fox are causing the population of the Red fox to dwindle in Chakwal, Pakistan.

scholarly journals Population Structure of Rhododendron Campanulatum D. Don and Associated Tree Species along the Elevational Gradient of Manaslu Conservation Area, Nepal

2016 ◽  
Vol 21 (1) ◽  
pp. 95-102
Author(s):  
Prabina Rana ◽  
Madan Koirala ◽  
Dinesh Raj Bhuju ◽  
Chuenchit Boonchird
Keyword(s):  
Climate Change ◽  
Population Structure ◽  
Altitudinal Gradient ◽  
Elevational Gradient ◽  
Climatic Conditions ◽  
Importance Value Index ◽  
Importance Value ◽  
Conservation Area ◽  
The Impact ◽  
Rhododendron Campanulatum

Climate change is affecting the forest ecosystems worldwide. Impacts of climate change are more perceptible at higher altitudes and can be easily detected along the elevational gradient. The main aim is to study the impact of elevation on the population structure of Rhododendron campanulatum D. Don and associated trees species at Manaslu Conservation Area, central Nepal. A total of 30 quadrats were sampled from 3600-4100 meter above sea level (m asl.) at altitudinal difference of 100 m with 5 quadrates in each altitude. The present study showed that R. campanulatum, Betula utilis, Abies spectabilis and Sorbus microphylla are the treeline species. R. campanulatum was the most dominant species with highest importance value index (IVI) along the altitudinal gradient. At 4000 m asl. S. microphylla was the codominant species. B. utilis was the codominant species at 3600 -3900 m asl followed by S. microphylla and A. spectabilis. R. campanulatum and A. spectabilis showed a sustainable regeneration. No seedling of B. utilis was found along the altitudinal gradient indicating that the regeneration of this species might be affected by unfavourable micohabitat (eg. deep shade). R. campanulatum and S. microphylla were found above the treeline indicating that the climatic conditions were favourable for their growth. The height, diameter and density of the species differed along the elevational gradient and showed a species specific trend. Journal of Institute of Science and TechnologyVol. 21, No. 1, 2016, page: 

scholarly journals FOREST STRUCTURE AND REGENERATION PATTERN OF BETULA UTILIS D. DON IN MANASLU CONSERVATION AREA, NEPAL

2014 ◽  
Vol 20 ◽  
pp. 107-113 ◽  
Author(s):  
Hishila Sujakhu ◽  
Kamal Raj Gosai ◽  
Siddhi Bir Karmacharya
Keyword(s):  
Forest Structure ◽  
Tree Species ◽  
Dominant Species ◽  
Importance Value Index ◽  
Importance Value ◽  
Conservation Area ◽  
Regeneration Pattern ◽  
Lower Elevation ◽  
Betula Utilis ◽  
Diameter Curve

Forest structure and regeneration of Betula utilis (D. Don) was studied in birch forestlocated in Samagaun valley (3500 – 4000 m) of Manaslu Conservation Area. Vegetationsampling was done by quadrat method. Altogether 40 quadrats were sampled to determinethe Importance Value Index (IVI) of tree species, and distribution pattern of seedlings andsaplings. Regeneration was assessed by density - diameter curve. Four tree species wererecorded from the forest. Betula utilis was the dominant tree species with the highestImportance Value Index (173.22) in mixed Betula forest and 262.96 in pure Betula forestand Abies spectabilis was the co – dominant species (65.95) in mixed Betula forest whileRhododendron campanulatum was the co-dominant species (37.03) in pure Betula forest.Density of Betula utilis increased with increase in elevation where as density of other treespecies decreased with increase in elevation. Mixed Betula forest at lower elevation wasyoung. The density diameter curve of the tree population of Betula utilis, both on mixed andpure forests, deviated slightly from the typical reverse J shaped structure and hence did notshow the sustainable regeneration. The sapling density was higher than seedling density.The distribution of seedlings and saplings were not uniform among the sampling plots.DOI: http://dx.doi.org/10.3126/eco.v20i0.11472ECOPRINT An International Journal of EcologyVol. 20, 2013page: 107-113

scholarly journals ANALISIS POTENSI SIMPANAN KARBON HUTAN MANGROVE DI AREA PT. INDOCEMENT TUNGGAL PRAKARSA, TBK P 12 TARJUN

2016 ◽  
Vol 12 (3) ◽  
pp. 312
Author(s):  
Eva Ariani ◽  
Muhammad Ruslan ◽  
Akhmad Kurnain ◽  
Kissinger Kissinger
Keyword(s):  
Vegetation Type ◽  
Seedling Stage ◽  
Total Carbon ◽  
Mangrove Forests ◽  
Importance Value Index ◽  
Importance Value ◽  
Conservation Area ◽  
Total Carbon Content ◽  
Nypa Fruticans ◽  
Ceriops Decandra

This study aims to analyze the structure of the mangrove forest stands in a conservation area PT. Indocement P12 Tarjun, South Kalimantan. To determine the potential amount of carbon stored in vegetation and soils di area mangrove forests. Merumuskah form of management in accordance with mangrove forests owned by PT Indocement Tunggal Tbk P 12 Tarjun. The results of this study show the type of vegetation that are within the plot observation is Aegicera corniculatum, Acivennia alba, Avicennia lanata, Avicennia Marina, Bruguera gymnorrhiza, Bruguiera parviflora, Ceriops decandra, Lumnitzera, Rhizophora apiculate, Rhizophora mucronata, Scyphiphora hydrophyllacea, Sonneratia alba, Xylocarpus granatum, Acanthus ebracteatus, Hibiscus tiliaceus, Nypa fruticans, Terminalia catappa and type of vegetation present in the area of research, but is not included in the observation plot is Acrostichum aureum Linn, Pandanus odoratissima. Importance Value Index (IVI) lenata kind Avicennia highest growth rate of the tree that is 80,2%, Rhizophora apiculata at the level of the pole that is 57%, and Nypa fruticans at the seedling stage is 20,8%. To Nypa fruticans, though IVIs largest/highest species of plants in the seedling stage but this type is only found on two research plots only. Total carbon content was found at the study site was at 714,77 per hectare. The study was conducted on biomass carbon on the surface, lower plants, nekromassa (dead trees), and mangrove sediments (ground). Carbon sequestration at a site can be seen from the height and diameter of trees while a vegetation type had no significant effect on the absorption of carbon. Environmental management in the form of replanting are research needs to be done to avoid more severe harm than good because of logging by humans atupun affected by coastal erosion. Type Lumnitzera, Scyphiphora hydrophyllacea, Ceriops decandra should get more attention because it has a very low INP hat is necessary to manage lebis so it can be adjusted with the handling principles of environmental factors such as tidal conditions, sediment, pH, salinity

scholarly journals Weed phytosociology in diversified soybean production systems

2021 ◽  
Vol 42 (6supl2) ◽  
pp. 3567-3580
Author(s):  
Ivan Bordin ◽  
◽  
Osmar Maziero Buratto ◽  
Andreia Cristina Peres Rodrigues da Costa ◽  
Benedito Noedi Rodrigues ◽  
...  
Keyword(s):  
Management Practices ◽  
Production Systems ◽  
Integrated Management ◽  
Management Strategies ◽  
Suppressive Effect ◽  
Ecological Interactions ◽  
Weed Species ◽  
Importance Value Index ◽  
Importance Value ◽  
Commelina Benghalensis

The knowledge of the impacts of the management practices used in each agricultural production system on the ecological interactions between commercial crops and weed populations can assist in the development of specific and sustainable integrated management strategies. This study aimed to assess weed communities in soybean in succession to second-crop corn and production systems with crop diversification in Northern Paraná State. The study was conducted during three agricultural years (2014/2017). Six treatments were setup: 1 – corn/soybean, corn/soybean, and corn/soybean), 2 – white oat/soybean, rye/corn, and wheat/soybean, 3 – oat + rye/soybean, oat + radish/corn, and congo grass/soybean, 4 – canola/corn, crambe/corn, and safflower/soybean, 5 – buckwheat/ radish/corn, bean/soybean, and buckwheat/oat/soybean, and 6 – wheat/corn + congo grass, canola/corn, and bean/soybean. The relative importance value index of each weed species and the soil cover (soil, straw, and weeds) were assessed. The experimental design consisted of randomized blocks with four replications of 300 m2 (20 × 15 m). The production systems white oat/soybean, rye/corn, and wheat/soybean; buckwheat/radish/corn, bean/soybean, buckwheat/oat/soybean; and wheat/corn+congo grass, canola/corn, bean/soybean had a suppressive effect on the species Commelina benghalensis. Euphorbia heterophylla and Digitaria horizontalis were the species most adapted to the assessed production systems. Seeds remaining from crambe and radish cultivations became volunteer plants in subsequent cultivations.

scholarly journals Floristic composition of weeds in a dystrophic Red-Yellow Argisol under the cultivation of cowpea, cv. BRS Novaera

2019 ◽  
pp. 1275-1279
Author(s):  
Francisco de Alcântara Neto ◽  
José Oscar Lustosa de Oliveira Júnior ◽  
Antônio Aécio de Carvalho Bezerra ◽  
Gabriel Barbosa da Silva Júnior ◽  
José de Anchieta Alves de Albuquerque ◽  
...  
Keyword(s):  
Relative Frequency ◽  
Management Strategies ◽  
Floristic Composition ◽  
Productive Performance ◽  
Weed Species ◽  
Importance Value Index ◽  
Importance Value ◽  
Calculated Frequency ◽  
Growth Development ◽  
Number Of Individuals

Among the several factors that negatively influence cowpea culture, weeds have been responsible for the reduction of growth, development and productive performance of the crop, making it necessary to establish management strategies based on phytosociological studies of weed species in growing areas. Therefore, the objective of this research was to evaluate the floristic composition of weeds, aiming to identify the main species and their dynamics, and to consider their distribution in time and space as pertaining to the cultivation of a modern variety of cowpea, cv. BRS Novaera, in dystrophic Red-Yellow Argisol, in the Midnorth region of the state of Piauí, Brazil. The phytosociological survey of weeds was carried out in three sessions: the first one was immediately before the area was desiccated with glyphosate (15 days before sowing the cowpea), and the others were at 20 and 40 days after sowing (DAS). Following the quantification of species and number of individuals, the following phytosociological parameters were calculated: frequency and relative frequency; density and relative density; abundance and relative abundance; and importance value index. It was concluded that there were few changes in the floristic composition of the weed community according to the epoch of the phytosociological surveys. The main weed plants at 20 DAS of cowpea (vegetative phase) were Chamaesyce hirta, Digitaria insularis, Alternanthera tenella, Cleome affinis, Mollugo verticillata and Portulaca oleracea. At 40 days (reproductive phase), the weed species with a large establishment and acting as potential competitors with cv. BRS Novaera cowpea were Digitaria insularis, Chamaesyce hirta and Mollugo verticillata.

scholarly journals Status and distribution of Red Panda (Ailurus fulgens fulgens) in Simsime community forest of Papung VDC of Taplejung district, Nepal

2019 ◽  
Vol 29 (1) ◽  
pp. 25-32
Author(s):  
B. Lama
Keyword(s):  
Habitat Characteristics ◽  
Encounter Rate ◽  
Community Forest ◽  
Importance Value Index ◽  
Importance Value ◽  
Transect Line ◽  
Contour Lines ◽  
Red Panda ◽  
Ailurus Fulgens ◽  
Pinus Spp

Red Panda (Ailurus fulgens fulgens), globally an endangered species of Himalaya, were studied in Simsime community forest of Papung Village Development Committee (VDC) in Taplejung district. It was carried out to assess status, habitat characteristics and threats to Red Panda. Three transects were laid out along the contours and their total length was 2200 m. The altitude of these transects varied from 2800–3400m. While moving along the transect line, the signs such as pellets, footprints and nests of Red Panda were searched and the GPS points were recorded in those places where the signs were observed. The habitat was assessed simultaneously to describe its characteristics in this community forest. Square plots of 10m * 10m, 4m * 4m and 1m*1m were laid out to assess trees, shrubs and herbs, respectively along contour lines at an altitudinal interval of 200 m between 2800 m and 3400 m and the plots were spaced at a distance of 100 m. Diameter at breast height (DBH) of major tree species (Juniperus spp., Pinus spp., Acer spp. and Rhododendron spp) was measured in the plots. The signs were found in Simsime community forest at an altitude of 3026 m, 3125 m and 3127 m. Overall sign encounter rate for this community forest was 1.36/km. Acer spp. had the highest Importance Value Index (IVI) and Arundinaria malingers the major bamboo species with highest relative frequency (RF). Based on direct field observation, major threats to Red Panda were found to be grazing and bamboo cutting in which majority of the respondents agreed.

scholarly journals Structure and Dominance of Species in Mangrove Forest on Kutai National Park, East Kalimantan, Indonesia

2021 ◽  
Vol 27 (1) ◽  
pp. 59-68
Author(s):  
E Muli ◽  
◽  
I S Sulistyorini ◽  
E Poedjirahajoe ◽  
L R W Faida ◽  
...  
Keyword(s):  
Mangrove Forest ◽  
National Park ◽  
Survey Method ◽  
P Value ◽  
Importance Value Index ◽  
Importance Value ◽  
Mangrove Species ◽  
Conservation Area ◽  
East Kalimantan ◽  
Rhizophora Apiculata

The Kutai National Park (KNP) which is located in East Kutai Regency on East Kalimantan Province is endowed with numerous pristine of mangrove forest. However, related information to the species composition and diversity of KNP mangrove is still scanty. Twenty-one of mangrove species were recorded using the quadratic transects survey method (total plot area of 1.7 ha). Main species of mangrove communities were Avicennia lanata, A. marina, Bruguiera gymnorrhysa, B sexangular, Ceriops tagal, Rhizophora apiculata, R. mucronata and Sonneratia Alba. Mangrove density was recorded reached as 1,699 trees ha-1, saplings of 4,395 ha-1 and seedlings 25,348 ha-1. Significant tree density was found in Pandan Bay Estuary. While in the Lombok Bay and the Kaba Bay significant for sapling and seedling categories. Importance value index of mangrove species in the three study locations for three growth categories (tree, sapling and seedling) showed significant differences (p-value> α0.05). Mangrove stand at three study locations has almost the same characteristics. The species diversity and evenness index has shown the same distribution pattern. The findings of this study suggest that KNP mangrove forest stand is not heavily damaged even though there is a lot of human activity. This mangrove could be managed and conserved for multi-sectoral purposes such as ecotourism, research, biodiversity and education rather than solely as a Nature Conservation Area.

scholarly journals Karakteristik ekologi, kondisi kesehatan dan tingkat kerawanan degradasi mangrove saat penginisiasian KKPD Rupat Utara 2018

2021 ◽  
Vol 8 (1) ◽  
pp. 1
Author(s):  
Syahrial Syahrial ◽  
Riri Ezraneti ◽  
Bintal Amin ◽  
Nur Safira ◽  
Dodi Fan Halen Siregar
Keyword(s):  
Diversity Index ◽  
Health Condition ◽  
Importance Value Index ◽  
Importance Value ◽  
Conservation Area ◽  
The North ◽  
Line Transects ◽  
Avicennia Alba ◽  
Mangrove Degradation ◽  
Comparison Data

The study of ecological characteristics, health conditions and the level of vulnerability of mangrove degradation when initiating North Rupat as a Regional Aquatic Conservation Area (KKPD) was conducted in July 2018 with the aim of future baseline data and comparison. Data collection on the condition of mangrove vegetation is carried out by making line transects and plots drawn from the reference point (outermost mangrove stands) in a direction perpendicular to the coastline to the mainland. The results of the study showed that 12 identified species. The diversity index and dominance are relatively low (H’ ≤ 2.0 and 0 < C ≤ 0.5), while the uniformity is classified as stable (0.75 < E ≤ 1). For the density of mangroves the highest category of trees is at Station 4 (2525 ind/ha ± 638.15), while the density of saplings and seedlings at Station 1 (2800 ind/ha ± 873.48 and 50000 ind/ha ± 17638.34), where Xylocarpus granatum is the dominant species in the tree and seedling category (Importance Value Index/IVI 191.74% and 240.80%), while Avicennia alba was for the saplings category (IVI 216.01%). In the main land part of the North Rupat KKPD area, the mangroves' health condition was increasingly threatened by destruction compared to the small islands around it. However, overall the level of vulnerability of mangrove degradation in the initiating area of North Rupat KKPD is still relatively low.

scholarly journals Plant Diversity On Protected Forest Vegetation Of Dempo Mountains, Pagar Alam, South Sumatera

Jurnal Biota ◽  
2019 ◽  
Vol 5 (1) ◽  
pp. 42-47
Author(s):  
Anita Restu Puji Raharjeng ◽  
Deby Noviyanti ◽  
Eli Apriana ◽  
Laila Fahriati ◽  
Yunita Dwi Hastati
Keyword(s):  
Plant Species ◽  
Forest Vegetation ◽  
Vegetation Analysis ◽  
Importance Value Index ◽  
Importance Value ◽  
Conservation Area ◽  
Species Dominance ◽  
Component Type ◽  
Conservation Organizations ◽  
The Individual

Vegetation is a collection of plants that usually consist of several species and live together in one place. Vegetation analysis is a way of studying the composition (component type) and the shape (structure) of vegetation or vegetation communities. Forests are the most important habitat component of life, hence the condition of plant communities within the forest, whether plant species composition, species dominance, density or closure of the canopy should be measured. The island of Sumatra is one of the most diverse ecoregion regions in the world. World Wildlife Fund for Nature (WWF) as one of the world's conservation organizations incorporates mountainous rainforest as a conservation area. The Sumatra mountain forests are one of the 200 critically endorsed ecoregions and a priority of global conservation. Mount Dempo is a protected forest area located on a cluster of hills line the island of Sumatra. This mountain has a height of 3159 asl (above sea level) and is the highest mountain in the area of South Sumatra. This study aims to determine the diversity of plants in the protected forest vegetation of Mount Dempo, Pagar Alam City, South Sumatera. Vegetation analysis was done by purposive sampling with bitterlich method, i.e measurement done on plot measuring 2x2, 5x5, 10x10, and 20x20 m. Analyzes were performed on two plots of different locations, and all plant species found in each plot were recorded of the type and amount. The parameters measured include the type name, the individual number of each type, the diameter, the height, and the height of the free branch. The results obtained at the Importance Value Index (INP) in Gunung Dempo, Pagar Alam of 294 stated that Mount Dempo has a high vegetation that is still preserving the existing plant, but it is also able to used as tourist visit as the stage of environmental and nature care.

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