Population status, trends and conservation of meadow-breeding waders in Norway

Wader Study ◽  
2021 ◽  
Vol 128 (1) ◽  
Author(s):  
Terje Lislevand ◽  
Ingvar Byrkjedal ◽  
Oddvar Heggøy ◽  
John Atle Kålås
Keyword(s):  
Population Status ◽  
Breeding Waders

scholarly journals An updated population status of Astor Markhor (Capra falconeri falconeri) in Gilgit-Baltistan, Pakistan

2021 ◽  
Vol 27 ◽  
pp. e01555
Author(s):  
Jibran Haider ◽  
Bushra Allah Rakha ◽  
Maqsood Anwar ◽  
Muhammad Zafar Khan ◽  
Hussain Ali
Keyword(s):  
Population Status ◽  
Gilgit Baltistan

scholarly journals Review of the Japanese records of an endangered grouper, Epinephelus tukula, with comments on its population status (Teleostei, Serranidae)

ZooKeys ◽  
2018 ◽  
Vol 772 ◽  
pp. 153-163 ◽  
Author(s):  
Atsunobu Murase ◽  
Ryohei Miki ◽  
Masaaki Wada ◽  
Masahide Itou ◽  
Hiroyuki Motomura ◽  
...  
Keyword(s):  
Distribution Pattern ◽  
Continuous Distribution ◽  
Kuroshio Current ◽  
Red List ◽  
The Internet ◽  
Ryukyu Islands ◽  
Population Status ◽  
Warm Current ◽  
Japanese Waters ◽  
The Kuroshio

The Potato Grouper, Epinephelustukula, is relatively rare worldwide. Records from the northernmost part of its range (Japan) have been few, resulting in a “Critically Endangered” listing on the Red List for Japan. The Japanese records were revised by examining literature, new specimens, photographs, and the internet, and a continuous distribution pattern from the tropical Ryukyu Islands (including adult individuals) to temperate regions affected by the Kuroshio Current were delineated; this suggests the species inhabits tropical Japan and can spread to temperate regions via the warm current. The species possibly reproduces in Japanese waters but further reproductive ecology research is required.

Bridled Quail-dove Geotrygon mystacea population assessment after hurricanes Irma and Maria, St. Eustatius, Caribbean Netherlands

2021 ◽  
pp. 1-12
Author(s):  
FRANK F. RIVERA-MILÁN ◽  
HANNAH MADDEN ◽  
KEVIN VERDEL
Keyword(s):  
National Park ◽  
Food Limitation ◽  
Distance Sampling ◽  
Population Status ◽  
Management Actions ◽  
Abundance Estimates ◽  
Detection Mode ◽  
Limited Food ◽  
Seed Eating ◽  
Free Ranging

Summary Structural vegetation damage and food limitation are important effects of major hurricanes, particularly for fruit/seed-eating, forest-dependent Caribbean birds with restricted distributions and small populations, such as the Bridled Quail-dove Geotrygon mystacea. Motivated by the lack of abundance estimates, corrected for detection probability, we conducted distance-sampling surveys inside and outside the Quill National Park each May in 2016-2019. Detection mode was the most important covariate, with others receiving no support from the data. Detectability of available single individuals and clusters of individuals within 60 m of transect centrelines averaged 0.957 ± 0.114 standard error for audio detections, 0.434 ± 0.052 for visual detections, and 0.693 ± 0.064 for detection modes combined. Availability averaged 0.475 ± 0.138 and the product of detectability and availability averaged 0.329 ± 0.098. Density averaged 1.459 ± 0.277 individuals ha-1 and population size averaged 642 ± 122 individuals in 440 ha. Density did not differ along and away from forest trails, but was higher inside than outside the park and at elevations within 201-400 m than 100-200 m and 401-600 m. Density declined by 76% after hurricanes Irma and Maria in 2017. We suggest that major hurricanes together with free-ranging livestock overgrazing degraded foraging habitats, limited food supply, and caused a population bottleneck. Our methodology can be implemented across the distribution range to assess population status and trends and evaluate the result of management actions at key conservation sites. Bridled Quail-dove populations probably were declining on most islands before the 2017 hurricanes and population status warrants revision.

scholarly journals Association between stress and bilateral symmetrical alopecia in free-ranging Formosan macaques in Mt. Longevity, Taiwan

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Chen-Chih Chen ◽  
Ai-Mei Chang ◽  
Ming-Shan Tsai ◽  
Yen-Hua Huang ◽  
Kurtis Jai-Chyi Pei ◽  
...  
Keyword(s):  
Total Population ◽  
Causative Factor ◽  
Population Status ◽  
Adrenocortical Activity ◽  
High Incidence ◽  
Normal Hair ◽  
The Mean ◽  
The Individual ◽  
Free Ranging ◽  
The Impact

AbstractSince 2013, a high incidence of bilateral symmetrical alopecia has been observed in free-ranging Formosan macaques (Macaca cyclopis) in Mt. Longevity, Taiwan. We hypothesized that stress induces alopecia in this population. To verify our hypothesis, we evaluated the histopathological characteristics of skin biopsy and used a validated enzyme immunoassay (EIA) for fecal glucocorticoid metabolite (FGM) analysis, which act as an indicator of stress experienced by the individual. Follicular densities were lower (2.1–3.0 mm2) in individuals with symmetrical alopecia than in those with normal hair conditions (4.7 mm2). Furthermore, anagen to catagen/telogen ratios were lower in individuals with alopecia (0–1.4) than in those with normal hair (4.0). The histopathological characteristics of alopecia were similar to those of telogen effluvium, which indicates that stress is one of the possible etiologies. On the basis of the analytical and biological validation of EIAs for FGM analysis, 11β-hydroxyetiocholanolone was considered suitable for monitoring adrenocortical activity in both sexes of Formosan macaques. The mean concentrations (standard error; sample size) of 11β-hydroxyetiocholanolone were 2.02 (0.17; n = 10) and 1.41 (0.10; n = 31) μg/g for individuals with and without alopecia, respectively. Furthermore, the results of logistic regression analysis show that 11β-hydroxyetiocholanolone (p = 0.012) concentration was positively associated with alopecia. Thus, stress was the most likely to trigger symmetrical alopecia in Formosan macaques in Mt. Longevity. Although stress can decrease the fitness of an individual, considering the population status of Formosan macaques in Taiwan is stable and alopecia was only observed in our study area, which is isolated from other populations, the impact on the total population of Formosan macaque in Taiwan is limited. Nonetheless, stress-induced immunosuppression and alopecia might affect the local abundance and increase zoonosis risk due to frequent human–macaque contact in Mt. Longevity. Future studies are suggested to focus on the causative factor of stress and the effects of stress and alopecia on the health and welfare in the Formosan macaques.

Population Status, Habitat Use and Breeding Biology of the Endangered Colombian Horned Lark in an Andean Wetland

Ardea ◽  
2021 ◽  
Vol 109 (1) ◽  
Author(s):  
Luis Alejandro Arias-Sosa ◽  
Jimmy Alexander Vargas-Puentes ◽  
Carolina Ramos-Montaño ◽  
Ariel S. Espinosa-Blanco
Keyword(s):  
Habitat Use ◽  
Breeding Biology ◽  
Population Status ◽  
Horned Lark

scholarly journals Status And Effects Of Food Provisioning on Ecology of Assamese Monkey (Macaca Assamensis) In Ramdi Area of Palpa, Nepal

2018 ◽  
Vol 22 (2) ◽  
pp. 183-190
Author(s):  
Krishna Adhikari ◽  
Laxman Khanal ◽  
Mukesh Kumar Chalise
Keyword(s):  
Survey Methods ◽  
Time Budget ◽  
Food Provisioning ◽  
Population Status ◽  
Female Ratio ◽  
Troop Size ◽  
Macaca Assamensis ◽  
Adult Sex Ratio ◽  
In The Wild ◽  
Group Density

The population status of Assamese monkey (Macaca assamensis) (McClelland 1840) and its interaction with the local people is poorly documented in Nepal. In 2014, we studied the population status, diurnal time budget and human-monkey conflict in Ramdi, Nepal by direct count, scan sampling and questionnaire survey methods, respectively. Two troops of Assamese monkey having total population of 48 with the mean troop size of 24 individuals were recorded in the study area. The group density was 0.33 groups / km² with a population density of 6 individuals/ km². The male to female adult sex ratio was 1:1.75 and the infant to female ratio was 0.85. The provisioned troop of Assamese monkey in Ramdi spent less time in feeding and movement while higher time was invested in resting and grooming than the nonspecific populations in the wild habitats. The human-monkey conflict is high in Ramdi, primarily due to the crop-raiding from fields and even the storage; the major crops raided are maize, vegetables, pulses and fruits. The higher reproductive success in terms of infant to adult female ratio, increased human-monkey conflicts and lesser investment of the diurnal time in foraging and feeding by Assamese monkey troop of Ramdi might be associated with the food provisioning. Journal of Institute of Science and TechnologyVolume 22, Issue 2, January 2018, Page: 183-190

Population Status and Life History Attributes of the Texas Shiner Notropis amabilis

2017 ◽  
Vol 177 (2) ◽  
pp. 277-288 ◽  
Author(s):  
Cody A. Craig ◽  
Bradley M. Littrell ◽  
Timothy H. Bonner
Keyword(s):  
Life History ◽  
Population Status
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