scholarly journals Abundance, diversity and daily activity of terrestrial mammal and bird species in disturbed and undisturbed limestone habitats using camera trapping, Central Thailand

2021 ◽  
Vol 22 (8) ◽  
Author(s):  
MANANYA PLA-ARD ◽  
WIPAVEE HOONHEANG ◽  
BUNYATHIPORN KAEWDEE ◽  
TARAPON PANGANTA ◽  
KHWANRUTAI CHARASPET ◽  
...  
Keyword(s):  
Daily Activity ◽  
Bird Species ◽  
Wild Birds ◽  
Camera Trapping ◽  
Mountainous Area ◽  
Mining Activities ◽  
Natural Habitats ◽  
Terrestrial Mammal ◽  
Significant Difference ◽  
Central Thailand

Abstract: Pla-ard M, Hoonheang W, Kaewdee B, Panganta T, Charaspet K, Khoiesri N, Paansri P, Kanka P, Chanachai Y, Thongbanthum J, Bangthong P, Sukmasuang R. 2021. Abundance, diversity and daily activity of terrestrial mammal and bird species in disturbed and undisturbed limestone habitats using camera trapping, Central Thailand. Biodiversitas 22: 3620-3631.  This study on the abundance, diversity and daily activity of terrestrial mammal and bird species was conducted in the limestone mountainous area of Central Thailand, located on the east of Dong Phaya Yen-Khao Yai forest complex. Camera traps were placed in both habitats disturbed by limestone mining and undisturbed habitat areas. From the study, a total of 38 species of mammals and birds from 27 families in 13 orders were recorded, including 15 species of mammals from 6 orders, 12 families and 23 species of birds from 14 families in 7 orders. Fifteen species of mammals were recorded in the undisturbed area and 11 were recorded in the disturbed area, with the Malayan Pangolin, Small Indian Civet and Grey-bellied Squirrel found in the undisturbed area. However, the number of bird species in the limestone mining area was larger than in the undisturbed area. It was also found that there was no difference in the overall abundance and diversity of mammalian species between disturbed and undisturbed areas, which is not in accordance with the hypothesis. But in the case of wild birds, the relative abundance of wild birds was found to differ significantly between areas. A high number was found in the areas with mining activities, although there was no difference in the diversity index of the two areas. However, it was found that when the combined data was analyzed, there was a significant difference in the daily activity of both mammals and wild birds in both areas. Many rare wildlife species were recorded during this study, for example, the Malayan Pangolin, Serow, Northern Pig-tailed Macaque, Rufous Limestone-babbler, Golden Jackal, Leopard Cat, Large-toothed Ferret Badger, Small Asian Mongoose, Common Palm Civet, Small Indian Civet, Malayan Porcupine. The key measure proposed is to preserve some natural habitats within the areas with mining activities, as wildlife remains in the area.

scholarly journals Schirmer’s Test I and Determination of Intraocular Pressure in Healthy Common Buzzards (Buteo buteo)

2019 ◽  
Vol 47 (1) ◽  
Author(s):  
Rahime Yaygingul ◽  
Zeynep Bozkan ◽  
Osman Bulut ◽  
Eser Cakmakci ◽  
Ali Belge
Keyword(s):  
Intraocular Pressure ◽  
Bird Species ◽  
Wild Birds ◽  
Topical Anesthesia ◽  
Rebound Tonometry ◽  
Buteo Buteo ◽  
Tear Production ◽  
Significant Difference ◽  
In The Wild ◽  
The Right

Background: The structure of the eye in wild birds is 45% larger than that in humans, which provides excellent visual capacity but also makes them vulnerable to eye trauma. Trauma, neoplasia, infectious diseases of the ocular surface, uveitis, glaucoma, and corneal diseases in wild birds, but mainly trauma, can cause a reduction in their tear production; therefore, determining the amount of tear production in the wild birds is very important. Studies have shown that the results of the Schirmer’s tear test (STT) and intraocular pressure (IOP) values differ among wild bird species, and that both anesthesia and sedation affects these parameters. The main objective of the present study was to determined IOP and STT I values in healthy common buzzards (Buteo buteo).Materials, Methods & Results: Thirty healthy common buzzards were selected for the study following clinical and ophthalmic examinations. Following physical and clinical examinations of all subjects, routine ophthalmologic examinations were conducted, including reflex examinations (pupillary, palpebral, menace, dazzle) and direct ophthalmoscopy for the eyelids, conjunctiva, cornea, iris, lens, and fundus. All examinations were conducted without anesthesia or sedation while the birds were in the dorsal recumbent position, and the results of STT I and IOP were recorded. Both tests were repeated for the right and left eyes. The mean ± SE STT I values for the right and left eyes were 12.63 ± 0.51 and 12.43 ± 0.54 mm/min, respectively. A comparison between STT I values of the right and left eyes revealed no statistically significant differences (P > 0.620). The means and ranges of the TonoVet® IOP results for the right and left eyes were 32.06 ± 1.58 and 32.60 ± 1.51 mmHg, respectively. There was no statistically significant difference between the results of the test on the two eyes (P > 0.05).Discussion: Tear production is either increased or decreased in wild birds as a result of several types of eye diseases or trauma (1, 6). The most common method by which to determine tear production is either STT I (3), which is conducted without topical anesthesia, or STT II, which is conducted with topical anesthesia. As in our study, previous studies have used STT I as their method by which to determine tear production of wild birds. In a study conducted on 20 common buzzards, STT I values were 12.47 ± 2.66 mm/min. In our study using 30 common buzzards, the STT I value was 12.63 ± 0.51 mm/min for the right eye and 12.43 ± 0.54 mm/min for the left eye. There was no statistically significant difference between the results of the tests on the two eyes. In previous study with 25 common buzzards, IOP measured rebound tonometry was 5-30 (35-60). In our study, rebound tonometry results for IOP of 30 common buzzards were 32.06 ± 1.58 mmHg (16-47) for the right eye and 32.60 ± 1.51 mmHg (17-50) for the left eye. There was no statistically significant difference in IOP values between right and left eyes. Given that there are few studies on tear production and IOP in common buzzard, we believe that the results of this study will provide valuable new information to the literature.

Abundance and diversity of ectoparasites of wild birds in Pandam Wildlife Park, Plateau State, Nigeria

2020 ◽  
Vol 41 (1) ◽  
pp. 6-13
Author(s):  
M.R. Daben ◽  
B.O. Echor ◽  
S.A. Da’an
Keyword(s):  
Wide Spectrum ◽  
Bird Species ◽  
White Paper ◽  
Wild Birds ◽  
Morphological Identification ◽  
Vector Borne Diseases ◽  
Significant Difference ◽  
Vector Borne ◽  
Plateau State ◽  
Abundance And Diversity

Birds’ populations are being threatened by parasites that have not received adequate attention by parasitologists. This study aimed at evaluating the abundance and diversity of ectoparasites of the wild birds in Pandam Wildlife Park. A systematic five-month study of ectoparasites was  conducted. Sixty-two (62) birds were trapped using mist nets and examined for ectoparasite infestation. Wool soaked with 70% ethanol, using gloved-protected-hand; ectoparasites were carefully extracted, preserved in sampling bottles containing 70% alcohol for morphological identification. A wide spectrum insecticide (0.09% tetrametrin and 0.45 piperronyl) was used to pulverize tiny parasites on the feather over a white paper. Overall, 4,066 ectoparasites belonging to 5 orders, 8 families, and 24 species were identified from the trapped birds. Fiftysix 56(90.3%) birds were found to be infested with ectoparasites, while 6(9.7%) had none. Phthirathera, and Siphonaptera were the most and least abundant  respectively. The highest parasites found were lice (96.60%) and the least, fleas (0.02%). Wing predilection site had the highest infestation rate (83%), and the lowest was the leg (0.37%). The most caught and most infested bird species was the West African thrush bird Turdus pelios (14.28%), followed by the Red-checked cuckoo-shrike and Bronze manikin (10.70% and 7.14%) respectively. Least species of bird infested among others, were the African paradise king fisher, Blue-throated brown sunbird, Blue-spotted wood dove, and Blue-breasted fire finch (1.79%). Nevertheless, there was no significant difference (p>0.05) in the rate of infestations among the caught and examined bird species. The study provided useful insight and knowledge on how diverse and abundant ectoparasites of bird species are in this park and possible vector-borne diseases that may have zoonotic potential. Keywords: Abundance; birds; ectoparasites; diversity; park; wildlife.

scholarly journals Impact of COVID-19 on workload burden of a complex radiotherapy facility

2021 ◽  
Vol 126 (5) ◽  
pp. 717-721
Author(s):  
Giulio Francolini ◽  
Isacco Desideri ◽  
Giulia Stocchi ◽  
Lucia Pia Ciccone ◽  
Viola Salvestrini ◽  
...  
Keyword(s):  
Disease Transmission ◽  
Daily Activity ◽  
Preventive Measures ◽  
Health Workers ◽  
Treatment Delivery ◽  
Actual Time ◽  
Italian Government ◽  
Significant Difference ◽  
The Impact ◽  
Observation Period

Abstract Background and purpose COVID-19 constitutes a worldwide threat, prompting Italian Government to implement specific measures on March 8, 2020, to protect patients and health workers from disease transmission. The impact of preventive measures on daily activity of a radiotherapy facility may hamper the ability to fulfill normal workload burden. Thus, we assessed the number of delivered treatments in a specific observation period after the adoption of preventive measures (since March 11 to April 24, 2020) and compared it with the corresponding period of the year 2019. Materials and methods Overall number of delivered fractions was related to actual time of platform daily activity and reported as a ratio between number of delivered fractions and activity hours (Fr/Hrs). Fr/Hrs were calculated and compared for two different periods of time, March 11–April 24, 2019 (Fr/Hrs1), and March 11–April 24, 2020 (Fr/Hrs2). Results Fr/Hrs1 and Fr/Hrs2 were 2.66 and 2.54 for year 2019 and 2020, respectively, for a Fr/Hrsratio of 1.07 (95% CI 1.03–1.12, p = 0.0005). Fr/Hrs1 was significantly higher than Fr/Hrs2 for SliR and PreciseR, with Fr/Hrsratio of 1.92 (95% CI 1.66–2.23, p < 0.0001) and 1.11 (95% CI 1.03–1.2, p = 0.003), respectively. No significant difference was reported for SynergyR and CyberknifeR with Fr/Hrsratio of 0.99 (95% CI 0.91–1.08, p = 0.8) and 0.9 (95% CI 0.77–1.06, p = 0.2), respectively. Fr/Hrs1 was significantly lower than Fr/Hrs2 for TomotherapyR, with Fr/Hrsratio of 0.88 (95% CI 0.8–0.96, p = 0.007). Conclusion Preventive measures did not influence workload burden performed. Automation in treatment delivery seems to compensate effectively for health workers number reduction.

scholarly journals Evaluation of Human Disturbance on the Activity of Medium–Large Mammals in Myanmar Tropical Forests

Forests ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 290
Author(s):  
Giacomo Cremonesi ◽  
Francesco Bisi ◽  
Lorenzo Gaffi ◽  
Thet Zaw ◽  
Hla Naing ◽  
...  
Keyword(s):  
Human Disturbance ◽  
Daily Activity ◽  
Wildlife Conservation ◽  
Activity Patterns ◽  
Circular Statistics ◽  
Large Mammals ◽  
Human Presence ◽  
Significant Difference ◽  
The Status ◽  
Statistical Approaches

The effects of human disturbance represent one of the major threats for wildlife conservation. Many studies have shown that wildlife avoids or reduces direct contact with human activities through changes in activity patterns, and by minimizing spatiotemporal overlap. In this study, we investigated the possible effects of human presence on the temporal activity of medium-to-large mammals using two areas in Myanmar that differ in the intensity of human disturbance. We monitored temporal segregation mechanisms using camera trapping data and with two statistical approaches: daily activity overlaps between humans and wildlife and circular statistics. We did not find a significant difference in overlapping activity between areas but, thanks to circular statistics, we found that some species show changes in activity patterns, suggesting temporal avoidance. We observed that the daily activity of five species differed between areas of Myanmar, likely adopting mechanisms to reduce overlap in areas highly frequented by humans. Interestingly, these species are all threatened by hunting or poaching activities, four of which have been described in literature as “cathemeral”, or species that are active through day and night. This study suggests that some species adapt their behavior, at least partially, to avoid human presence in habitats with higher anthropic occurrence and increase our knowledge on the status of medium–large mammals in a poorly studied country as Myanmar.

Bird community structure in natural and urbanized habitats along an altitudinal gradient in Pauri district (Garhwal Himalaya) of Uttarakhand state, India

Biologia ◽  
2012 ◽  
Vol 67 (4) ◽  
Author(s):  
Archana Naithani ◽  
Dinesh Bhatt
Keyword(s):  
Community Structure ◽  
Altitudinal Gradient ◽  
Diversity Index ◽  
Bird Species ◽  
Bird Community ◽  
High Elevation ◽  
Base Line ◽  
Natural Habitats ◽  
Forest Habitat ◽  
Rarefaction Analysis

AbstractIn the Indian subcontinent there is hardly any study that compares the bird community structure of urban/suburban areas with those of forest habitat. The present survey identified diverse assemblages of birds in the Pauri district at different elevations. A total of 125 bird species belonging to 40 families including two least count species (Lophura leucomelanos and Pucrasia marcolopha) were recorded during this survey in the forest and urbanized habitats of Pauri District (Garhwal Hiamalaya) of Uttarakhand state, India. The high elevation (Pauri 1600–2100 m a.s.l.), mid elevation (Srikot-Khanda 900–1300 m a.s.l.) and low elevation (Srinagar 500–900 m a.s.l.) contributed 88.8%, 63.2% and 58.4% of the total species respectively. Rarefaction analysis and Shannon diversity index showed that the high elevation forest habitat had highest bird species richness (BSR) and bird species diversity (BSD) followed by the mid and then the low elevation forests. BSR and BSD fluctuated across seasons at all elevations but not across habitat types. Present study provides a base line data about avian community composition in urbanized and natural habitats along altitudinal gradient in the study area. This information may be useful to the conservation biologists for the better management and conservation of the avifauna in the Western Himalaya, a part of one of the hot biodiversity spots of the world.

Seasonal and daily activity patterns in a Canadian population of the prairie rattlesnake, Crotalus viridus viridis

1985 ◽  
Vol 63 (1) ◽  
pp. 86-91 ◽  
Author(s):  
V. P. J. Gannon ◽  
D. M. Secoy
Keyword(s):  
Daily Activity ◽  
Activity Patterns ◽  
High Energy ◽  
Time Of Day ◽  
Energy Demands ◽  
Level Of Activity ◽  
Canadian Population ◽  
Significant Difference ◽  
Gravid Females ◽  
Daily Activity Patterns

The seasonal and daily activity patterns of a Saskatchewan population of Crotalus viridus viridis is presented. Snakes emerged from hibernation in late April and migrated into the surrounding river valley and upland regions in early May. Adult migration preceded that of immature age-classes. Several gravid females occupied a rookery near the hibernaculum during the summer months and remained there until parturition. Females did not occupy this site in successive years and may have a biennial or greater reproductive cycle. Snakes returned to the hibernaculum in early September and remained active until early October. The behaviour of snakes in a field enclosure in response to time of day and body temperature (Tb) was recorded during the spring, summer, and fall. Significant differences in the Tb values of sunning, movement, and shading behaviours were noted. Gravid females were significantly more active in all seasons. However, no significant difference in mean Tb was found between males and females in the field, enclosure study, or laboratory thermal gradient. The observed greater level of activity may reflect the high energy demands of gravid females.

scholarly journals Current Land Bird Distribution and Trends in Population Abundance Between 1982 and 2012 on Rota, Mariana Islands

2015 ◽  
Vol 6 (2) ◽  
pp. 511-540 ◽  
Author(s):  
Richard J. Camp ◽  
Kevin W. Brinck ◽  
P. Marcos Gorresen ◽  
Fred A. Amidon ◽  
Paul M. Radley ◽  
...  
Keyword(s):  
Land Cover ◽  
Bird Species ◽  
Ratio Estimator ◽  
Occupancy Models ◽  
Tree Sparrow ◽  
Range Restriction ◽  
Widespread Distribution ◽  
Significant Difference ◽  
Eurasian Tree Sparrow ◽  
Bird Distribution

Abstract The western Pacific island of Rota is the fourth largest human-inhabited island in the Mariana archipelago and designated an Endemic Bird Area. Between 1982 and 2012, 12 point-transect distance-sampling surveys were conducted to assess bird population status. Surveys did not consistently sample the entire island; thus, we used a ratio estimator to estimate bird abundances in strata not sampled during every survey. Trends in population size were reliably estimated for 11 of 13 bird species, and 7 species declined over the 30-y time series, including the island collared-dove Streptopelia bitorquata, white-throated ground-dove Gallicolumba xanthonura, Mariana fruit-dove Ptilinopus roseicapilla, collared kingfisher Todiramphus chloris orii, Micronesian myzomela Myzomela rubratra, black drongo Dicrurus macrocercus, and Mariana crow Corvus kubaryi. The endangered Mariana crow (x̄  =  81 birds, 95% CI 30–202) declined sharply to fewer than 200 individuals in 2012, down from 1,491 birds in 1982 (95% CI  =  815–3,115). Trends increased for white tern Gygis alba, rufous fantail Rhipidura rufifrons mariae, and Micronesian starling Aplonis opaca. Numbers of the endangered Rota white-eye Zosterops rotensis declined from 1982 to the late 1990s but returned to 1980s levels by 2012, resulting in an overall stable trend. Trends for the yellow bittern Ixobrychus sinensis were inconclusive. Eurasian tree sparrow Passer montanus trends were not assessed; however, their numbers in 1982 and 2012 were similar. Occupancy models of the 2012 survey data revealed general patterns of land cover use and detectability among 12 species that could be reliably modeled. Occupancy was not assessed for the Eurasian tree sparrow because of insufficient detections. Based on the 2012 survey, bird distribution and abundance across Rota revealed three general patterns: 1) range restriction, including Mariana crow, Rota white-eye, and Eurasian tree sparrow; 2) widespread distribution, low abundance, including collared kingfisher, island collared-dove, white-throated ground-dove, Mariana fruit-dove, white tern, yellow bittern, black drongo, and Micronesian myzomela; and 3) widespread distribution, high abundance, including rufous fantail and Micronesian starling. The Mariana crow was dispersed around the periphery of the island in steep forested land-cover types. In contrast, the Rota white-eye was restricted to the high-elevation mesa. Only for the white-throated ground-dove was there a significant difference among cover types, with lower occupancy in open field than in forested areas. Vegetation was included in the best-fit occupancy models for yellow bittern, black drongo, Micronesian myzomela, and Micronesian starling, but vegetation type was not a significant variable nor included in the top models for the remaining five species: white tern, island collared-dove, Mariana fruit-dove, collared kingfisher, and rufous fantail. Given declining population trends, the Rota bird-monitoring program could benefit from establishing threshold and alert limits and identifying alternative research and management actions. Continued monitoring and demographic sampling, in conjunction with ecological studies, are needed to understand why most bird species on Rota are declining, identify the causative agents, and assess effectiveness of conservation actions, especially for the Mariana crow.

scholarly journals Bioacoustic monitoring of New Zealand avifauna before and after aerial 1080 operations

2021 ◽  
Author(s):  
◽  
Roald Egbert Harro Bomans
Keyword(s):  
New Zealand ◽  
Bird Species ◽  
Conservation Practice ◽  
Significant Difference ◽  
Mammalian Predators ◽  
Before And After ◽  
Scale Population ◽  
The Creation ◽  
Negative Impacts ◽  
Native Birds

<p>Introduced mammalian predators, namely possums, stoats and rats, are the leading cause of decline in native avifauna in New Zealand. The control of these species is essential to the persistence of native birds. A major component of mammal control in New Zealand is carried out through the aerial distribution of the toxin sodium monofluoroacetate (otherwise known as 1080). The use of this toxin, however, is subject to significant public debate. Many opponents of its use claim that forests will ‘fall silent’ following aerial operations, and that this is evidence of negative impacts on native bird communities. With the continued and likely increased use of this poison, monitoring the outcomes of such pest control operations is necessary to both address these concerns and inform conservation practice. The recent growth in autonomous recording units (ARUs) provides novel opportunities to conduct monitoring using bioacoustics. This thesis used bioacoustic techniques to monitor native bird species over three independent aerial 1080 operations in the Aorangi and Rimutaka Ranges of New Zealand.  In Chapter 2, diurnal bird species were monitored for 10-12 weeks over two independent operations in treatment and non-treatment areas. At the community level, relative to non-treatment areas, the amount of birdsong recorded did not decrease significantly in treatment areas across either of the operations monitored. At the species level, one species, the introduced chaffinch (Fringilla coelebs), showed a significant decline in the prevalence of its calls in the treatment areas relative to non-treatment areas. This was observed over one of the two operations monitored. Collectively, these results suggest that diurnal native avifaunal communities do not ‘fall silent’ following aerial 1080 operations.  The quantity of data produced by ARUs can demand labour-intensive manual analysis. Extracting data from recordings using automated detectors is a potential solution to this issue. The creation of such detectors, however, can be subjective, iterative, and time-consuming. In Chapter 3, a process for developing a parsimonious, template-based detector in an efficient, objective manner was developed. Applied to the creation of a detector for morepork (Ninox novaeseelandiae) calls, the method was highly successful as a directed means to achieve parsimony. An initial pool of 187 potential templates was reduced to 42 candidate templates. These were further refined to a 10-template detector capable of making 98.89% of the detections possible with all 42 templates in approximately a quarter of the processing time for the dataset tested. The detector developed had a high precision (0.939) and moderate sensitivity (0.399) with novel recordings, developed for the minimisation of false-positive errors in unsupervised monitoring of broad-scale population trends.  In Chapter 4, this detector was applied to the short-term 10-12 week monitoring of morepork in treatment and non-treatment areas around three independent aerial 1080 operations; and to longer-term four year monitoring in two study areas, one receiving no 1080 treatment, and one receiving two 1080 treatments throughout monitoring. Morepork showed no significant difference in trends of calling prevalence across the three independent operations monitored. Longer-term, a significant quadratic effect of time since 1080 treatment was found, with calling prevalences predicted to increase for 3.5 years following treatment. Collectively, these results suggest a positive effect of aerial 1080 treatment on morepork populations in the lower North Island, and build on the small amount of existing literature regarding the short- and long-term response of this species to aerial 1080 operations.</p>

Bird species richness, composition and abundance in pastures are affected by vegetation structure and distance from natural habitats: a single tree in pastures matters

2017 ◽  
Vol 118 (2) ◽  
pp. 201-211 ◽  
Author(s):  
Mauricio Neves Godoi ◽  
Rudi Ricardo Laps ◽  
Danilo Bandini Ribeiro ◽  
Camila Aoki ◽  
Franco Leandro de Souza
Keyword(s):  
Species Richness ◽  
Vegetation Structure ◽  
Bird Species ◽  
Natural Habitats ◽  
Bird Species Richness ◽  
Single Tree

scholarly journals Surveillance of arbovirus infections in the atlantic forest region, State of São Paulo, Brazil: I. detection of hemagglutination-inhibition antibodies in wild birds between 1978 and 1990

1994 ◽  
Vol 36 (3) ◽  
pp. 265-274 ◽  
Author(s):  
Ivani B. Ferreira ◽  
Luiz E. Pereira ◽  
Iray M. Rocco ◽  
Antonia T. Marti ◽  
Luiza T. M. de Souza ◽  
...  
Keyword(s):  
Atlantic Forest ◽  
Hemagglutination Inhibition ◽  
Wild Birds ◽  
Venezuelan Equine Encephalitis ◽  
Positive Serology ◽  
Eastern Equine Encephalitis ◽  
Forest Region ◽  
Significant Difference ◽  
Report Data ◽  
Western Equine Encephalitis

We report data related to arbovirus antibodies detected in wild birds periodically captured from January 1978 to December 1990 in the counties of Salesópolis (Casa Grande Station), Itapetininga and Ribeira Valley, considering the different capture environments. Plasmas were examined using hemagglutination-inhibition (HI) tests. Only monotypic reactions were considered, except for two heterotypic reactions in which a significant difference in titer was observed for a determined virus of the same antigenic group. Among a total of 39,911 birds, 269 birds (0.7%) belonging to 66 species and 22 families were found to have a monotypic reaction for Eastern equine encephalitis (EEE), Venezuelan equine encephalitis (VEE), Western equine encephalitis (WEE), Ilheus (ILH), Rocio (ROC), St. Louis encephalitis (SLE), SP An 71686, or Caraparu (CAR) viruses. Analysis of the data provided information of epidemiologic interest with respect to these agents. Birds with positive serology were distributed among different habitats, with a predominance of unforested habitats. The greatest diversity of positive reactions was observed among species which concentrate in culture fields.

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