scholarly journals Birds composition and structure in arboreous steppe of Aleppo pine with holm oak at Séhary Guebli (Djelfa, Algeria).

2018 ◽  
Vol 19 (1) ◽  
pp. 19-30
Author(s):  
Karim Souttou ◽  
◽  
Labed Ababsa ◽  
Fatima Abidi ◽  
Omar Guezoul ◽  
...  

The counting of birds was conducted in a forest area of Aleppo Pine and Holm Oak Trees. A total of 35 species of birdswas recorded in this forest area. These species are distributed over 6 orders and 15 families. The Order Passeriformes was the most represented with 25 species and 9 families. The red Crossbill Loxia curvirostra wasthe most observed by means of progressive frequential sampling method with a percentage of 54.1% and the Greenfinch Fringilla coelebs wasthe most counted by the point count abundance indices with an IPA of 4.43.

2020 ◽  
Vol 21 (5) ◽  
Author(s):  
Malika Rached Kanouni ◽  
Alia ZERROUKI ◽  
Maroua LAHMAR ◽  
Amina Beldjazia ◽  
Karima Kara ◽  
...  

Abstract. Rached-Kanouni M, Zerrouki A, Lahmar M, Beldjazia A, Kara K, Ababsa. 2020. Assessment of the health status of the Sidi R'Ghies forest, Oum El Bouaghi, north-east Algerian. Biodiversitas 21: 1980-1988. In recent decades, the forest of Sidi R'Ghies has been degraded by human activity. The establishment of the state of the massif by a diagnosis on different forest plots is part of a project of monitoring and silvicultural management. The purpose of this study is to assess the health status of the Sidi R'Ghies forest. The methodology used was the visual assessment of the tree crown of the dominant species (i.e. Aleppo pine and holm oak) according to the protocols DEPEFEU, DEPERIS, and ICP Forests. These protocols were selected for adoption based on field observations and their applicability in record time. The results obtained indicate that the health status of the trees within the studied plots is declining. The DEPEFEU value index shows an average of 2.20 for Aleppo pine and 1.95 for holm oak while the DEPERIS has an average level of 4.56 in Aleppo pine and 3.07 in holm oak. ICP Forests has also contributed to providing clearer information on the consequences of this health situation by deducting an average visibility rate of 1.24 and 1.63; social status of 2.17 and 2.11 and competition of 1.71 and 2.49 for Aleppo pine and holm oak respectively. In general, the health status of the tree crown is average and almost adapted to the environmental conditions. In contrast, the carrying capacity of biodiversity is low and needs to be improved.


Elkawnie ◽  
2020 ◽  
Vol 6 (1) ◽  
pp. 133
Author(s):  
Juhardi Sembiring ◽  
Taufiq Siddiq Azvi

Abstract : Orangutan is classified as an endangered species. Forest clearance for a variety of purposes and functions over the region led to the limited habitat for orangutans. Orangutans habitat is fragmented into several regions led to the survival of a population of a species depends on habitat conditions. Performing a nest survey is important to give a deeper understanding of the ecology and help determine the best protective management measures. We provide basic data of orangutan density and orangutan nesting characteristics in protected forest area Sibongkaras village. This study was conducted in April 2019 until June 2019 in protected forest area Sibongkaras village, Pakpak Bharat. Tracking begins with observed the presence of a nest based on a purposive sampling method. And data retrieval was done by line transect method. Data analyzed at Universitas Nahdlatul Ulama Sumatera Utara. Our result showed that the orangutan population density was 0.0072 individuals/km2 or 0.72 individuals/ha. The dominant position of the nest is in a position which is a position I nest close to the main stem of the tree with the nest number 13 (43.3%). Generally, the nest is found at an altitude of  >15 meters with a sum of 27 nests (90%).Abstrak : Orangutan diklasifikasikan sebagai spesies yang terancam punah. Penebangan hutan untuk berbagai tujuan dan fungsi di kawasan tersebut menyebabkan terbatasnya habitat orangutan. Habitat orangutan yang terfragmentasi menjadi beberapa wilayah menyebabkan kelangsungan hidup suatu populasi suatu spesies tergantung pada kondisi habitat. Melakukan survei sarang penting untuk memberikan pemahaman yang lebih dalam tentang ekologi dan membantu menentukan langkah-langkah manajemen perlindungan terbaik. Kami menyediakan data dasar kepadatan orangutan dan karakteristik sarang orangutan di kawasan hutan lindung Desa Sibongkaras. Penelitian ini dilakukan pada bulan April 2019 hingga Juni 2019 di kawasan hutan lindung Desa Sibongkaras, Pakpak Bharat. Pengamatan dimulai dengan mengamati keberadaan sarang berdasarkan metode purposive sampling. Dan pengambilan data dilakukan dengan metode transek garis. Data yang diperoleh di analisis di Universitas Nahdlatul Ulama Sumatera Utara. Hasil Penelitian kami menunjukkan kepadatan populasi orangutan di 0,0072 individuals/km2 atau 0,72 individu / ha. Posisi sarang yang dominan adalah pada posisi sarang yang berada di posisi paling dekat dengan batang utama, dengan jumlah sarang 13 (43,3%). Umumnya sarang ditemukan di ketinggian > 15 meter dengan jumlah 27 sarang (90%).


2018 ◽  
Vol 9 (1) ◽  
pp. 104-119 ◽  
Author(s):  
Prakash Chandra Dash ◽  
Manmath Nath Samantaray

Purpose The purpose of this paper is to explore the composition of “tourism experience” of tourist visiting during the Nabakalebara event at Puri, India. Design/methodology/approach The paper applies data reduction using exploratory factor analysis on a sample of 300 respondents drawn during the event and condenses a set of 20 attributes into a list of five compressible factors. Findings The research shows that visitors visualise tourism experience as a combination of five factors: education, entertainment, esthetics, escapism and ease of facilities. They assigned different weightage in terms of significance to each of these factors. Internal configuration of these factors also reveals interesting patterns. Research limitations/implications A non-probability sampling method is applied in this research. Future studies should replicate the research in different social, economic and geographical context to see if the factor composition and structure remain unchanged. Practical implications Organisers should focus on improving ease of facilities. Disproportionate expenditure on adding to other factors is not expected to yield matching dividends. Social implications The study assumes significance as this kind of event used to happen on every 15 years. This attracts millions of visitors. The paper explores the expectation of visitors. Originality/value This paper is among the few works done on understanding tourism experience during the Nabakalebara at Puri, India. It adds significantly to the meagre body of knowledge in the area of tourism experience.


Author(s):  
Nyoman Wijana ◽  
I Made Oka Riawan ◽  
Sanusi Mulyadiharja

Forests are a source of foreign exchange that has been exploited on a large scale for timber. This exploitation causes a rapid reduction in forest area. Until now, the destruction of the forest environment is still happening, both by illegal logging and illegal mining. This study aims to determine the number of rare plant species in Alas Kedaton Tourism Forest, Tabanan, Bali, Indonesia; and the factors causing the rarity of these plant species. The population in this research is the plant species in Alas Kedaton Tourism Forest. Meanwhile, the social population is all people in the Alas Kedaton Tourism Forest area. The sampling method for plant species is the quadratic method was used to investigate the diversity and the number of rare plants. While for the social sampling was conducted by interviewing with purposive sampling method to the local community around the Alas Kedaton areas. Determination of endangered plant species was conducted by studying of available documents, in-depth interviewing, and seeking information from various existent sources. The collected data analyzed descriptively. The results of this study indicated there are 48 species of plants with 26 families, which are generally found in Alas Kedaton Tourism Forest. Of this number, 42 (87.5%) plant species are included in the rare category; (2) of the 42 species of rare plants in the Alas Kedaton Tourism Forest, there are 8 (19.04%) plant species that are included in the National rare category, 20 (47.62%) rare plant species in Bali, 10 ( 23.81%) rare plant species in Tabanan Regency, and 4 (9.52%) species included in the rare category at the District level (especially Marga District); and (3) factors causing the scarcity of plant species in Alas Kedaton Tourism Forest are (a) past environmental degradation, (b) reproductive problems of rare plants, (c) human intervention, (4) disturbance by animals, especially long tailed monkeys (Macaca fascicularis) and bats (Pteropus vampyrus).


Fire ◽  
2019 ◽  
Vol 2 (3) ◽  
pp. 48
Author(s):  
Kira M. Hoffman ◽  
Sara B. Wickham ◽  
William S. McInnes ◽  
Brian M. Starzomski

Fire exclusion and suppression has altered the composition and structure of Garry oak and associated ecosystems in British Columbia. The absence of frequent low severity ground fires has been one of the main contributors to dense patches of non-native grasses, shrubs, and encroaching Douglas-fir trees in historical Garry oak dominated meadows. This case study uses remote sensing and dendrochronology to reconstruct the stand dynamics and long-term fire history of a Garry oak meadow situated within Helliwell Provincial Park located on Hornby Island, British Columbia. The Garry oak habitat in Helliwell Park has decreased by 50% since 1950 due to conifer encroachment. Lower densities and mortalities of Garry oak trees were associated with the presence of overstory Douglas-fir trees. To slow conifer encroachment into the remaining Garry oak meadows, we recommend that mechanical thinning of Douglas-fir be followed by a prescribed burning program. Reintroducing fire to Garry oak ecosystems can restore and maintain populations of plants, mammals, and insects that rely on these fire resilient habitats.


2017 ◽  
Vol 131 (2) ◽  
pp. 321-333 ◽  
Author(s):  
M. T. Martínez ◽  
M. C. San José ◽  
A. M. Vieitez ◽  
M. J. Cernadas ◽  
A. Ballester ◽  
...  

2017 ◽  
Vol 105 ◽  
pp. 216-226 ◽  
Author(s):  
René Guénon ◽  
Thomas A. Day ◽  
Sergio Velazco-Ayuso ◽  
Raphaël Gros

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