scholarly journals KEANEKARAGAMAN JENIS BURUNG DI KAWASAN PENYANGGA TAMAN HUTAN RAYA SULTAN SYARIF HASYIM PROVINSI RIAU

2020 ◽  
Vol 14 (2) ◽  
pp. 85-101
Author(s):  
Andriano Hutapea ◽  
Eno Suwarno ◽  
Hadinoto Hadinoto
Keyword(s):  
Vegetation Cover ◽  
Secondary Forest ◽  
Bird Species ◽  
Buffer Zone ◽  
Secondary Forests ◽  
Vegetation Analysis ◽  
Point Count ◽  
A Value ◽  
Point Count Method ◽  
High Diversity

The existence and spread of birds are closely related to the availability of food and habitat for birds while showing the existence of an individual or group of individuals. Species of birds and how the spread of bird species is based on habitat in the buffer zone of Tahura Sultan Syarif Hasyim. The method used is to use the Point Count method while calculating existing vegetation using anveg (vegetation analysis). The composition of birds in various vegetation cover is divided into 2 namely secondary forest and agroforestry land, in secondary forests there are 292 individuals, 41 species, 25 families from 9 orders while on agroforestry land there are 213 individuals, 25 species, 16 families of 6 orders. Thus, in the buffer zone of Tahura Sultan Syarif Hasyim, there were 505 individuals, 48 ​​species, 28 families of 10 orders with diversity included in the category of "High Diversity" with a value of 3.54, in the distribution of 14 species of land species, 27 types of lower canopy, 37 types of middle canopy and 26 types of top canopy.

scholarly journals KEANEKARAGAMAN JENIS BURUNG DI KAWASAN HUTAN LINDUNG GUNUNG SIRIMAU

2017 ◽  
Vol 1 (3) ◽  
pp. 247
Author(s):  
John F. Sahusilawane
Keyword(s):  
Bird Species ◽  
Bird Diversity ◽  
Mountain Forests ◽  
Point Count ◽  
Red Eye ◽  
Count Method ◽  
Protected Forests ◽  
Point Count Method ◽  
Habitat Variables

This study was conducted to determine the composition of bird diversity and vegetation stages and composition, to determine the variables that most influence the diversity of birds in protected forests Sirimau, This study was conducted for three months from September 2015 to November 2015. Bird observations and habitat variables performed using the Point Count method, and found thirty observation points at each location, with 30 cm trellis and 200 m plot distance. The analysis of birds and vegetation in Sirimau mountain forests shows that, bird species are dominated by Red Eye (Aplonis Motalica), and more than 50 species of vegetation exist in the research location, dominated by fruits.  

scholarly journals A Fixed-radius Point Count Method for Nonbreeding and Breeding Season Use

The Auk ◽  
1986 ◽  
Vol 103 (3) ◽  
pp. 593-602 ◽  
Author(s):  
Richard L. Hutto ◽  
Sandra M. Pletschet ◽  
Paul Hendricks
Keyword(s):  
Bird Species ◽  
Common Species ◽  
Bird Abundance ◽  
Point Count ◽  
Bird Density ◽  
Count Method ◽  
Species Abundances ◽  
Fixed Radius ◽  
Point Count Method ◽  
A Site

Abstract We provide a detailed description of a fixed-radius point count method that carries fewer assumptions than most of the currently popular methods of estimating bird density and that can be used during both the nonbreeding and breeding seasons. The method results in three indices of bird abundance, any of which can be used to test for differences in community composition among sites, or for differences in the abundance of a given bird species among sites. These indices are (1) the mean number of detections within 25 m of the observer, (2) the frequency of detections within 25 m of the observer, and (3) the frequency of detections regardless of distance from the observer. The overall ranking of species abundances from a site is similar among the three indices, but discrepancies occur with either rare species that are highly detectable at great distances or common species that are repulsed by, or inconspicuous when near, the observer. We argue that differences in the behavior among species will preclude an accurate ranking of species by abundance through use of this or any other counting method in current use.

Comparing disturbance-sensitivity between plants and birds: a fine-grained analysis in a suburban remnant wetland

2014 ◽  
Vol 60 (1) ◽  
pp. 11-17 ◽  
Author(s):  
Giuliano Fanelli ◽  
Corrado Battisti
Keyword(s):  
Anthropogenic Disturbance ◽  
Bird Species ◽  
Breeding Birds ◽  
Similar Distribution ◽  
Point Count ◽  
Fine Grained ◽  
Vegetation Disturbance ◽  
Wintering Birds ◽  
The Mean ◽  
Point Count Method

Hemeroby is a concept widely employed in assessment of the effect of human activities on vegetation. In this study, we apply the concept to a set of bird species occurring in a Mediterranean remnant wetland. The aim was to obtain an average hemeroby index for two seasonally related bird assemblages (i.e. breeding and wintering) based on the information related to two levels of plant hemeroby. In a grid of 47 cells 100×100 m-wide, we sampled the fine-grained distribution of plant communities (Braun-Blanquet method/cell) in parallel with birds (point count method; one point count/cell), assigning an independent score of hemeroby to plants and birds on a scale from I to V, from pristine habitats with a lack of natural and/or anthropogenic disturbance (score = I) to completely artificial habitats (score = V). Whereas bird species ranged from categories II to V, vegetation types spanned only the categories III and IV. Therefore, bird species showed a higher variability in hemeroby. By comparing hemeroby scores, we can deduce the effect that the vegetation disturbance may have on bird species. The mean hemeroby for breeding birds, calculated on all the species occurring in a determined plant hemeroby category, is not significantly different between sites with higher (= IV) and lower (= III) plant hemeroby (i.e. higher and lower level of disturbance). The mean hemeroby of the wintering birds was significantly different in the two levels of plant hemeroby (i.e. higher vs. lower hemeroby). Our data suggest that only the wintering birds had a hemeroby distribution pattern related to that of the plants, while the distribution of breeding birds showed no association, i.e. they appear in similar distribution in both plant hemeroby classes. This pattern may reflect the characteristics of the habitat types in relation to bird seasonality: a large section of wintering bird species are strictly water-related, linked to habitats with low plant hemeroby, so appearing more sensitive to change in plant hemeroby when compared to breeding species. Although explorative, our data may be useful in wildlife management, implying that in wetland–grassland mosaics the more sensitive wintering bird species are suitable as indicators aimed to test the effect of natural and anthropogenic disturbances.

Deforestation in a tropical compact city part a: understanding its socio-ecological impacts

2016 ◽  
Vol 5 (1) ◽  
Author(s):  
Puay Yok Tan ◽  
Yuanqiu Feng ◽  
Yun Hye Hwang
Keyword(s):  
Public Opinion ◽  
News Media ◽  
Vegetation Cover ◽  
Design Methodology ◽  
Secondary Forest ◽  
Ecological Impacts ◽  
Spatial Extent ◽  
News Article ◽  
Secondary Forests ◽  
Contentious Issue

Purpose Secondary forest loss in Singapore has recently emerged as a contentious issue that tests the relationships between state, public and civil society, but debates on this issue have occurred without the benefit of supporting information on the spatial extent, and understanding of multiple socio-ecological impacts arising from their gradual disappearance. The purpose of this paper is to fill these knowledge gaps to contribute to development of approaches to manage land developments on secondary forests. Design/methodology/approach This study evaluated the past and potential future losses of spontaneous re-growth forest through spatial analyses of vegetation cover maps combined with national land use plans using remote sensing and GIS. The socio-ecological impacts of such losses were interpreted from published writings, which comprise scientific publications and public opinion in news media. Findings Secondary forest losses accounted for more than half of total vegetation cover reduction between 2007 and 2012, and future potential losses amount to about 4,700 ha of land if these are fully developed over the next 10-15 years. The socio-ecological consequences of such losses are identified. Strong public opinion are reflected in the large number of news article on the topic over the last four years, pointing to the emergence of a contentious issue that requires careful management. Originality/value This paper conducted the first assessment of the spatial extent of secondary forests losses, and an extensive review of public opinion of the matter, and the results validated the significance of this topic.

scholarly journals Patterns of Species Richness and Abundance in Badingilo National Park in South Sudan

2019 ◽  
Vol 1 (1) ◽  
Author(s):  
Thomas Francis Lado ◽  
David Gwolo Phanuel Mogga ◽  
Richard Angelo Lado Benjamin
Keyword(s):  
Species Richness ◽  
National Park ◽  
Habitat Type ◽  
Bird Species ◽  
Abundant Species ◽  
Point Count ◽  
Number Of Species ◽  
Riverine Habitat ◽  
Species Richness And Abundance ◽  
Point Count Method

The study was carried out to determine patterns of birds’ species richness, alpha and beta diversities; and abundance in Badingilo national park using a 10 m fixed-radius point count method. A total of 2670 individuals were recorded from 182 points in the park. The highest expected number of species (Jack1 estimator) was observed in the Riverine habitat and least was in the Agriculture and Human settlement habitat type. The total number of species observed in the park was 63; however Jack1 estimator indicated that there were 68 species in the park. The majority of the birds observed during the study were resident species, few migratory and Palaearctic bird species. Few birds observed in the park were abundant. The most abundant species was the village weaver (381 individuals), and the rarest species were black-bellied bustard, barn owl, black scimitar bill and tree pipit (one individual each).

scholarly journals Diversidad de aves en fragmentos de bosque seco tropical en paisajes ganaderos del Departamento de Córdoba, Colombia

2017 ◽  
Vol 65 (4) ◽  
pp. 1625
Author(s):  
Jose Alejandro Vergara Paternina ◽  
Jesús Ballesteros Correa ◽  
Carlos González Charrasquiel ◽  
Juan C. Linares Arias
Keyword(s):  
Species Richness ◽  
Secondary Forest ◽  
Tropical Dry Forest ◽  
Bird Species ◽  
Sampling Period ◽  
Shannon Index ◽  
Dry Forest ◽  
Tree Cover ◽  
Bird Diversity ◽  
Secondary Forests

In Colombia the tropical dry forest is one of the most threatened and least known ecosystems; these have been impacted by different transformation processes and habitat fragmentation, which have affected bird conditions and survival. This research evaluated the influence of landscape elements (forest and pastures with different tree covers) on bird diversity in the tropical dry forest of Córdoba, Colombia. The study was developed within an extensive livestock landscape to characterize the avifauna in four habitat types formed by fragments of secondary forests with different tree cover: secondary forest, pastures with high tree cover, pastures with low tree cover and only pastures. The influence of tree cover on bird diversity was evaluated with monthly samplings in 200 m long transects (per habitat), with two observation intervals (6:00 - 9:00 and 15:00-18:00), from September 2011 to May 2012. A total of 6 667 individuals belonging to 180 species and 48 families of birds were registered. The most abundant species were Columbina talpacoti (5.37 %), Brotogeris jugularis (5.14 %), Tyrannus melancholicus (4.81 %) and Bubulcus ibis (4.80 %). The most abundant family was Tyrannidae (16.4 %), followed by Psitacidae (9.0 %) and Columbidae (8.2 %). The family with the highest number of species was Tyrannidae with 28 species, followed by Accipitridae and Icteridae with 10 species each. The greatest species richness was present in the secondary forest habitat, followed by the pastures with high tree cover, and pastures with low cover. The lowest abundance and species richness was found in pastures without tree cover with significant differences between the habitats (Fisher, p <0.05). According to the Shannon index, the diversity of birds was higher in the secondary forests. In contrast, the lowest diversity was found in pastures without tree cover. The greatest species richness occurred in the months of October and November. In the rest of the sampling period, the number of recorded species and individuals showed some stability. The importance of trees presence in extensive livestock areas was evidenced because they help to contain an important diversity of bird species, and they also generate connectivity among fragments of secondary forests in the cattle landscape.

scholarly journals Spesies Burung pada Beberapa Tipe Habitat di Kecamatan Lhoknga Kabupaten Aceh Besar

2017 ◽  
Vol 4 (1) ◽  
pp. 15
Author(s):  
Samsul Kamal ◽  
Elita Agustina ◽  
Zahratur Rahmi
Keyword(s):  
Bird Species ◽  
Point Count ◽  
Count Method ◽  
Line Transects ◽  
Point Count Method

Lhoknga subdistrict is an area that has a habitat for many species of fauna, including birds. References about species of birds in some habitats are still very limited. Therefore, it is necessary to make a research on bird species in several types of habitat in the district of Lhoknga. The aim of the research is to figure out birds species in several types of habitats in the Lhoknga subdistrict. The data were collected by using the point count method and line transects. The results showed that there were 39 species of birds from 21 families found in Lhoknga district. Based on the PP. No. 07 of 1999, it was found that there were 14 species of protected birds in Lhoknga subdistrict.

scholarly journals Avifauna Survey within a University Campus and Adjacent Forest Fragment in Bicol, Eastern Philippines

2019 ◽  
pp. 84-95
Author(s):  
Jocelyn Serrano ◽  
Jonathan Guerrero ◽  
Josiah Quimpo ◽  
Giovani Andes ◽  
Erwin Bañares ◽  
...  
Keyword(s):  
Bird Species ◽  
Bird Diversity ◽  
University Campus ◽  
Avian Diversity ◽  
Forest Fragment ◽  
Point Count ◽  
Main Campus ◽  
Bird Survey ◽  
Baseline Information ◽  
Point Count Method

With the lack of baseline information on avifauna within Bicol University and the adjacent forest fragment, this research aimed to identify bird species and compare their presence between an urbanized and forest areas. Avian diversity was documented within the Kalikasan Park and Bicol University Main Campus adjacent ecosystems, representing a forest fragment and semi-urbanized ecosystems, respectively. Bird survey was carried out through point count method. Identification was aided by existing taxonomic keys. A total of 44 species were recorded with eleven as Philippine endemics. Lonchura malacca(Chestnut Munia) and Aplonis panayensis (Asian Glossy Starling) were among the most frequently sighted. Bird species sighted was higher in the forest fragment as compared with the main campus area. The study recommends that Bicol University Main campus be transformed into an avian buffer and safe zone for the protection and conservation of these species and to provide policies to maintain high bird diversity.

scholarly journals Soil quality indicators in areas with different vegetation cover in the Atlantic Forest biome, Southeastern Brazil

2020 ◽  
Vol 11 (7) ◽  
pp. 1-15
Author(s):  
Fernado Silva Coutinho ◽  
Luiz Alberto da Silva Rodrigues Pinto ◽  
Marcos Gervasio Pereira ◽  
Shirlei Almeida Assunção ◽  
Silver Rodrigues Zandoná ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Atlantic Forest ◽  
Vegetation Cover ◽  
Secondary Forest ◽  
Southeastern Brazil ◽  
Organic Carbon Content ◽  
Secondary Forests ◽  
Forest Fragments ◽  
Humic Fractions ◽  
Forest Biome

The southeast region of Brazil, in the Atlantic Forest biome, has been impacted for a long time, observing today small agricultural areas inserted in a matrix of pastures and forest fragments, the soils being highly modified due to the different forms of use they were submitted. The objective of this study was to evaluate the organic carbon content in the humic fractions on soil organic matter (SOM), the distribution of aggregates in size classes and the porosity and aggregates density variables by means of computed tomography in secondary forest, pasture and agriculture areas in Pinheiral (RJ). Three areas composed of secondary forests with different succession stages and three managed areas were evaluated: Secondary Forest (SF) Initial Stage (SFIS), Medium Stage (SFMS), Advanced Stage (SFAS), mixed managed pasture (MMP), and perennial and annual agriculture (PA and AA, respectively). Three types of samples were collected in different layers: i) deformed samples to quantify carbon in the SOM humic fractions; ii) clods for quantifying the mass of aggregates and later assessing the distribution by diameter classes; and iii) undisturbed samples collected with the aid of an acrylic cylinder to perform computed tomography (CT). Humic substances and aggregate classes below 2.0 mm were the attributes most influenced by the forms of use and/or vegetation cover. The CT technique proved to be efficient in the measurement of the edaphic attribute’s porosity and density of the aggregates, helping in the characterization and separation of the different environments.

scholarly journals Avian Ecological Diversity as an Indicator of Urban Forest Functionality. Results from Two Case Studies in Northern and Southern Italy

2009 ◽  
Vol 35 (2) ◽  
pp. 80-86
Author(s):  
Giovanni Sanesi ◽  
Emilio Padoa-Schioppa ◽  
Leonardo Lorusso ◽  
Luciana Bottoni ◽  
Raffaele Lafortezza
Keyword(s):  
Urban Forest ◽  
Vegetation Type ◽  
Bird Species ◽  
Tree Height ◽  
Urban Environments ◽  
City Centre ◽  
Point Count ◽  
Urban Planning And Design ◽  
Abundance And Diversity ◽  
Point Count Method

Greenspaces and forest trees contribute to a number of environmental functions in urban environments, such as the survival of urban-dwelling species (e.g., bird species). This paper analyzes the relationship between greenspace characteristics (structural and spatial attributes) and the diversity of avian ecology species. This provides research findings coming from two studies conducted in Italy. Using point-count method, a quantification was done of the abundance and diversity of bird species in a number of greenspaces having different structural attributes (e.g., vegetation type, tree height) and spatial characteristics (e.g., location, connectivity). Results showed positive correlations between greenspaces with a more diverse and mature forest vegetation and the number of specimens and species observed in the two studies. A positive correlation appeared also between distance to the city centre and richness and abundance of bird species. Finally, we discuss some of the main implications for enhancing the functional attributes of greenspaces by using avian ecological indicators to inform ecologically sound urban planning and design.

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