Living on polluted habitat: A preliminary study of marine debris impact to foraging waterbirds in Muara Angke Mangrove Ecosystem, Jakarta

Mangrove ecosystems are vulnerable to pollution such as marine debris. The presence of marine debris can affect the waterbird community. The present study aims to determine and analyze the effect of marine debris on waterbirds in the Muara Angke Mangrove Area. The research was undertaken from October to November 2020 at three research areas: Angke-Kapuk Protection Forest, Angke-Kapuk Nature Tourism Park, and Muara Angke Arboretum. Observations of waterbirds were carried out using the point count method and observations of marine debris density were conducted with the shoreline survey method developed by NOAA. To find out the pattern of marine debris distribution and its effect on waterbirds, we implemented Principal Component Analysis (PCA) and Spearman Correlation. In total, there were 13 species of waterbirds from 7 different orders in the three research areas. PCA analysis showed 6 variables in PC1 namely herbivorous duck, tactical surface, visual surface, habitat generalist, moderate specialist, and large. Further, PC2 produces 6 variables, namely pursuit diving, stalking, habitat generalist, aquatic generalist, and large. The results of the Spearman correlation indicated that three bird species were significantly negatively correlated with trash, those species are Anhinga melanogaster, Egretta garzetta, and Mycteria cinerea.

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KEANEKARAGAMAN JENIS BURUNG DI KAWASAN HUTAN LINDUNG GUNUNG SIRIMAU

JURNAL HUTAN PULAU-PULAU KECIL ◽

10.30598/jhppk.2017.1.3.247 ◽

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.

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Rafflesia patma Blume in Pananjung Pangandaran Nature Reserve, West Java: Population Structure, Distribution Patterns, and Environmental Influences

Journal of Tropical Biodiversity and Biotechnology ◽

10.22146/jtbb.64800 ◽

2021 ◽

Vol 6 (3) ◽

pp. 64800

Author(s):

Bahana Aditya Adnan ◽

Suwarno Hadisusanto ◽

Purnomo Purnomo

Keyword(s):

Population Structure ◽

Nature Reserve ◽

Principal Component ◽

Sampling Technique ◽

Distribution Patterns ◽

Survey Method ◽

Endemic Plant ◽

West Java ◽

Research Areas ◽

Morisita Index

Rafflesia patma is an endemic plant of Pangandaran, West Java which is protected because of its rare status. The purpose of this research is to study the population structure, distribution patterns, and the effect of the physical environment of abundance R. patma in Pananjung Pangandaran Nature Reserve, West Java. The method used in this research was a survey method with a purposive sampling technique. Sampling was conducted using quadrat plots. The population pattern distribution was defined by a standardized Morisita index, and the analysis of abiotic environmental factors was determined by Principal Component Analysis (PCA) using PAST3. The results showed that there were 114 R. patma individuals scattered in several research areas in Pananjung Pangandaran Nature Reserve, they were Gua Parat (3 individuals), Cilegon (13 individuals), Pasir Putih (12 individuals), Badeto (48 individuals), and Curug Leutik (38 individuals). The distribution pattern of R. patma in Pananjung Pangandaran Nature Reserve was clustered with the Morisita index value (Id) > 1. Based on the PCA analysis, results that support the classification of the cluster analysis were obtained. Based on four abiotic environmental conditions analyzed, the most dominant character in influencing the distribution patterns and population structure of R. patma is light intensity.

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

The Auk ◽

10.1093/auk/103.3.593 ◽

1986 ◽

Vol 103 (3) ◽

pp. 593-602 ◽

Cited By ~ 306

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.

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

Israel Journal of Ecology and Evolution ◽

10.1080/15659801.2013.924326 ◽

2014 ◽

Vol 60 (1) ◽

pp. 11-17 ◽

Cited By ~ 5

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.

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

Journal of Zoological Research ◽

10.30564/jzr.v1i1.1284 ◽

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).

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

BIOTIK: Jurnal Ilmiah Biologi Teknologi dan Kependidikan ◽

10.22373/biotik.v4i1.1067 ◽

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.

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

Applied Environmental Research ◽

10.35762/aer.2019.41.2.8 ◽

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.

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

Arboriculture & Urban Forestry ◽

10.48044/jauf.2009.015 ◽

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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Birds of Barandabhar Corridor Forest, Chitwan, Nepal

Journal of Threatened Taxa ◽

10.11609/jott.6614.13.11.19509-19526 ◽

2021 ◽

Vol 13 (11) ◽

pp. 19509-19526

Author(s):

Saneer Lamichhane ◽

Babu Ram Lamichhane ◽

Kapil Pokharel ◽

Pramod Raj Regmi ◽

Tulasi Prasad Dahal ◽

...

Keyword(s):

Habitat Type ◽

Bird Species ◽

Wetland Birds ◽

Species List ◽

Point Count ◽

Reference Guide ◽

Point Count Method ◽

Time Frames ◽

Bird List

Long term monitoring of bird species was conducted in Barandabhar Corridor Forest, one of the important bird areas of Nepal (IBA). Bird species were identified by the point count method in transect surveys in two-time frames from 2002–2012 and 2015–2016 to obtain the bird species list. We compared our bird list with previously published (after 2000) checklists and compiled the updated checklist of birds of Barandabhar Corridor Forest. We documented 372 bird species belonging to 80 families in Barandabhar, including five Critically Endangered, three Endangered, eight Vulnerable, and 15 Near Threatened species. The Accipitridae family included the highest number of species (n= 32), followed by Muscicapidae (n= 30) and Anatidae (n= 18). Approximately, half of the total confirmed bird species were insectivorous. The list included 63% resident, 27% winter migratory, 7.5% summer migratory, and 2.9% passage migrant species. According to the habitat type, there were 181 species of forest, 74 species of wetland, 24 species of grassland, 70 species of open field, and 23 species of partially wetland birds. This updated checklist of bird species will serve as a reference guide for bird watchers, biodiversity researchers, and support managers for conservation effort; and can be used to track any changes in the composition of bird species in the future.

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Bird Species Diversity of the Mitidja Plain (Northern Algeria) with Emphasis on the Dynamics of Invasive and Expanding Species

Acrocephalus ◽

10.2478/acro-2013-0002 ◽

2013 ◽

Vol 34 (156-157) ◽

pp. 13-26 ◽

Cited By ~ 3

Author(s):

Djamel Bendjoudi ◽

Haroun Chenchouni ◽

Salaheddine Doumandji ◽

Jean-François Voisin

Keyword(s):

Bird Species ◽

Weather Conditions ◽

Mapping Method ◽

Point Count ◽

Direct Observations ◽

Psittacula Krameri ◽

Northern Algeria ◽

Bird Fauna ◽

Point Count Method ◽

The Rose

Abstract This treatise investigates the poorly studied bird fauna of Mitidja Plain (Northern Algeria), with particular notes on the occurrence and expansion of new and alien species. Direct observations, supported by ornithological surveys carried out by Progressive Frequential Sampling (PFS), a version of a point count method, have allowed us to identify 125 bird species. These represent 31% of all species known from Algeria. The species recorded belong to 14 orders, 39 families and 37 genera. According to their biogeographic origins, 36 are Mediterranean, 32 Palearctic, 24 Holarctic, 17 European and 16 of European-Turkestani origin. The Mitidja Plain holds 60 resident-breeder species (48% of all registered species) and is a transit zone for many migratory species (summer and winter migrants constituting 20% and 14% of the total, respectively) and occasional visitors (RA = 12%). Among recently expanding species (introduced or local), the Collared Dove Streptopelia decaocto and Wood Pigeon Columba palumbus, sampled by the spot-mapping method, experienced a very rapid population growth. The first observations of the former were made in 1996 in Algiers. Its numbers experienced a steep increase after 2002, starting from 5.75 pairs/10 ha to reach up to 31.5 pairs/10 ha in 2006. The same applies for the Rose-ringed Parakeet Psittacula krameri, surveyed by direct-count at roosting sites. This species has been able to increase and reproduce since its first introduction into the wild in 1996. The increase in study species populations, especially the Rose-ringed Parakeet, may derive from good weather conditions that favoured the species through providing better feeding conditions, thus high reproduction outcomes.

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