scholarly journals Population Fluctuation and Diurnal Time Budgeting of White-Headed Duck (Oxyura Leucocephala) During Winter at Garaet Hadj Tahar (Skikda, North East Algerian)

2021 ◽  
Vol 8 (1) ◽  
pp. 46-54
Author(s):  
Merzoug Seyf Eddine ◽  
Abdi Soumia ◽  
Bara Mouslim ◽  
Houhamdi Moussa
Keyword(s):  
Threatened Species ◽  
Time Budget ◽  
Population Fluctuation ◽  
Biological Conservation ◽  
North East ◽  
Conservation Plan ◽  
And Behavior

This study was focused on the ecology and behavior of the White-headed Duck (Oxyura leucocephala) at Garaet Hadj Tahar (Guerbes-Sanhadja, North East of Algeria). Sampling was carried out during two wintering seasons (2017-2018 and 2018-2019). High number of this duck was recorded in 2018/19 (350 individuals). We observed two Oxyura population, the first sedentary, and the second, hosted the Garaet during the wintering season. Diurnal time budget was dominated by the comfort activities the sleeping with a rate of 39.13%. Following by swimming (37.76%), feeding (17.59%) grooming (4.58%), courtship ritual (0.56%) and flying (0.38%). The feeding of white-headed duck is done exclusively by diving. Beside, this waterbird associated between Feeding by diving and grooming in order to minimized energy. The accessory activities such as: courtship ritual, flying were done by this duck at the end of wintering. This results confirm that Garaet Hadj Tahar is considered as wintering site for this threatened species. Biological Conservation plan (BCP) must be applied at level of this wetland in order to manage bioressources and threatened waterbirds.

scholarly journals Two new locations for the Vulnerable Black-necked Crane Grus nigricollis (Przhevalsky, 1876) (Aves: Gruiformes: Gruidae) in Arunachal Pradesh, India

2019 ◽  
Vol 11 (10) ◽  
pp. 14381-14384 ◽  
Author(s):  
Rohan Krish Menzies ◽  
Megha Rao ◽  
Abhinav Kumar
Keyword(s):  
Threatened Species ◽  
The Other ◽  
Arunachal Pradesh ◽  
Local Conservation ◽  
North East India ◽  
North East ◽  
Grus Nigricollis ◽  
New Locations ◽  
The One ◽  
New Location

The Vulnerable Black-necked Crane Grus nigricollis is a known migrant to various locations in India. Here, we report two new locations in Arunachal Pradesh, north-east India, where one is a possible wintering location and the other a possible stopover en route their migration. One new location in Shergaon (western Arunachal Pradesh) is relatively close to previous locations; however, the one in Mechuka (central Arunachal Pradesh) is some distance away from previous records which is highly intriguing. These records of this threatened species will hopefully assist with local conservation measures, bring about more rigorous monitoring, and more surveys for these rare species in the region. 

Distribution, breeding phenology and time budget of Ruddy Shelduck Tadorna ferruginea during the annual cycle in the Hauts Plateaux, north-east Algeria

Ostrich ◽  
2013 ◽  
Vol 84 (2) ◽  
pp. 129-136 ◽  
Author(s):  
Mouloud Boulkhssaïm ◽  
Abdallah Ouldjaoui ◽  
Ahmed H Alfarhan ◽  
Boudjéma Samraoui
Keyword(s):  
Annual Cycle ◽  
Time Budget ◽  
Breeding Phenology ◽  
North East

scholarly journals Time budget patterns and complementary use of a Mediterranean wetland (Tonga, North-east Algeria) by migrant and resident waterbirds

2016 ◽  
Vol 86 (1) ◽  
pp. 55 ◽  
Author(s):  
Elafri Ali ◽  
Halassi Ismahan ◽  
Houhamdi Moussa
Keyword(s):  
Coastal Wetlands ◽  
Time Budget ◽  
Quantitative Description ◽  
Late Summer ◽  
Open Water ◽  
Feeding Time ◽  
Time Budgets ◽  
North East ◽  
Species Specific ◽  
Open Water Body

We carried out a quantitative description of the use of a Mediterranean wetland (Tonga, North-east Algeria) by 22 waterbirds species (11 residents and 11 Palaearctic migrants) during late summer-wintering period, also analyzing their species-specific diurnal time budgets and the main related features of the landscape. The analyses of similarity in time budgets across birds (Hierarchal Cluster Analysis) showed four clusters of species associated with four major activities: day time mostly feeding (11 species), sleeping (6), swimming (3) and resting (2). Residents (Herons and Rails) showed a higher feeding time when compared to migrants (diving ducks, Gulls and Cormorants). From late summer to winter the time budget activity change in migrants; in contrast residents behave uniformly among daytime and at the course of the season. The use of this natural wetland in a complementary way by a high number of waterbirds (residents and migrants), is principally promoted by the existing of numerous habitat types. We found that 3 main ecological units, open water body, mudflats, and flooded meadows were the most utilized as foraging habitats among grebes, rails, ducks, gulls, and herons. In contrast, floating-leafed vegetation, and tall emergent vegetation were the commonest habitat categories used in resting activities especially by cormorants and herons. Data on behaviour requirements of these waterbirds can be used for conservation and correct management of this and other Mediterranean coastal wetlands.

scholarly journals Trends and biases in the listing and recovery planning for threatened species: an Australian case study

Oryx ◽  
2012 ◽  
Vol 47 (1) ◽  
pp. 134-143 ◽  
Author(s):  
Jessica C. Walsh ◽  
James E. M. Watson ◽  
Madeleine C. Bottrill ◽  
Liana N. Joseph ◽  
Hugh P. Possingham
Keyword(s):  
Environmental Protection ◽  
Threatened Species ◽  
Biological Conservation ◽  
Recovery Planning ◽  
Threat Status ◽  
Species Lists ◽  
Planning Processes ◽  
Australian Case ◽  
Taxonomic Groups

AbstractMany countries rely on formal legislation to protect and plan for the recovery of threatened species. Even though the listing procedures in threatened species legislation are designed to be consistent for all species there is usually a bias in implementing the laws towards charismatic fauna and flora, which leads to uneven allocation of conservation efforts. However, the extent of bias in national threatened species lists is often unknown. Australia is a good example: the list of threatened species under the Environmental Protection and Biological Conservation Act has not been reviewed since 2000, when it was first introduced. We assessed how well this Act represents threatened species across taxonomic groups and threat status, and whether biases exist in the types of species with recovery plans. We found that birds, amphibians and mammals have high levels of threatened species (12–24%) but < 6% of all reptiles and plants and < 0.01% of invertebrates and fish are considered threatened. Similar taxonomic biases are present in the types of species with recovery plans. Although there have been recent improvements in the representation of threatened species with recovery plans across taxonomic groups, there are still major gaps between the predicted and listed numbers of threatened species. Because of biases in the listing and recovery planning processes many threatened species may receive little attention regardless of their potential for recovery: a lost opportunity to achieve the greatest conservation impact possible. The Environmental Protection and Biological Conservation Act in Australia needs reform to rectify these biases.

scholarly journals Status and habitat of the White-winged Duck Cairina scutulata

1993 ◽  
Vol 3 (2) ◽  
pp. 119-143 ◽  
Author(s):  
Andy J. Green
Keyword(s):  
Population Size ◽  
Original Population ◽  
North East India ◽  
North East ◽  
Conservation Plan

SummaryThe endangered White-winged Duck Cairina scutulata was formerly widely recorded from north-east India, Bangladesh, Union of Myanmar (Burma), Thailand, Laos, Vietnam, Cambodia, Malaysia (peninsular) and Indonesia (Java and Sumatra). It was found to be “common” by British ornithologists in areas of India, Myanmar and Thailand in the early part of this century. Since then, deforestation and hunting have caused a major decline to perhaps less than 5% of its original population size. Since 1980 the species has been reliably recorded from 55 sites in seven countries, with a minimum combined population of 336 individuals. A conservation plan has been produced and implementation has begun.

Status, ecological attributes and conservation of native rodents in Queensland

2000 ◽  
Vol 27 (4) ◽  
pp. 333 ◽  
Author(s):  
C. R. Dickman ◽  
L. K.-P. Leung ◽  
S. M. Van Dyck
Keyword(s):  
Survey Research ◽  
Threatened Species ◽  
Research Management ◽  
Southern States ◽  
Ecological Attributes ◽  
South Eastern ◽  
North East ◽  
Body Weights ◽  
Threatening Processes ◽  
Future Management

In total, 41 species of native rodents have been recorded from Queensland, more than for any other State or Territory in Australia. Assessments of status for these species, using information on patterns of distribution and abundance, indicate that 21 species remain common, 3 are rare, 2 are vulnerable, 7 are endangered and 8 are presumed extinct. Comparisons of body weights, habits and habitats revealed no differences between common and threatened species, but species with broad diets have tended to remain common compared with dietary specialists. South-eastern Queensland has relatively more threatened and extinct species combined than the richer north-east, while species that occur or occurred in two or more regions are more likely to have remained common than those that occurred in one region only. All 12 extant rare and threatened species appear to be afflicted by one or more threatening processes, with only seven of these having ranges that coincide with reserved land. Although native rodents have fared better in Queensland than in other, principally southern States, their status leaves no room for complacency for future management. We propose several measures for survey, research, management and education to assist progress toward conservation goals.

Range extension of the Triodia Earless Skink Hemiergis millewae, and first record in New South Wales

2020 ◽  
Vol 40 (4) ◽  
pp. 636-640
Author(s):  
Jules E. Farquhar
Keyword(s):  
Species Distribution ◽  
Threatened Species ◽  
New South ◽  
New South Wales ◽  
South Australia ◽  
First Record ◽  
North East ◽  
Broken Hill ◽  
South Wales ◽  
Survey Effort

A specimen of the Triodia Earless Skink Hemiergis millewae was discovered on the Barrier Range of far-western New South Wales (NSW). This observation is significant because it constitutes the first record of the species in NSW and the Broken Hill Complex bioregion, extending the species’ range 140 km north-east of the nearest known population in South Australia. Suitable spinifex habitat for H. millewae is highly isolated and small in extent on the Barrier Range, and the species may qualify for listing as a threatened species in NSW. I discuss the cause of apparent disjunctions in the species’ distribution and highlight the need for additional survey effort.

scholarly journals The distribution and status of Worthen's Sparrow Spizella wortheni: a review

1993 ◽  
Vol 3 (3) ◽  
pp. 211-220 ◽  
Author(s):  
David C. Wege ◽  
Steve N. G. Howell ◽  
Andrés M. Sada
Keyword(s):  
New Mexico ◽  
Threatened Species ◽  
Nuevo Leon ◽  
Range Contraction ◽  
Small Areas ◽  
South Eastern ◽  
North East ◽  
The North ◽  
Nuevo León

SummaryOriginally described last century from New Mexico, U.S.A., Worthen's Sparrow Spizella wortheni has subsequently been recorded from just eight states in Mexico centred on the interior of the north-east of the country. Records during the last 30 years originate from just Coahuila and Nuevo León, with those during the last 10 years exclusively from two small areas in south-eastern Coahuila and western Nuevo León: it appears that this poorly known species has been suffering a range contraction owing to the widespread destruction of its shrubby (mesquite or yucca-juniper) grassland habitat. Little detail is known of its specific requirements, local movements, or even its distribution, and it is proposed that Worthen's Sparrow be formally recognized as a threatened species.Originalmente descrito el siglo pasado a partir de ejemplares procedentes de Nuevo Méjico, U.S.A., Spizella wortheni ha sido posteriormente citado en ocho estados mejicanos, todos en el interior del noreste del país. Durante los últimos 30 años, todas las citas provienen de Coahuila y Nuevo León, y durante los últimos 10 exclusivamente de dos pequeñas áreas del sureste de Coahuila y del oeste de Nuevo León: parece que el área de distribution de esta escasamente conocida especie ha ido reduciéndose debido a una generalizada destructión de su hábitat de matorral (mescal o yuca-enebro) pastizal. Se conoce muy poco de sus requerimientos específicos, movimientos locales, o incluso su distributión, y se propone que Spizella wortheni sea formalmente reconocido como una especie amenazada.

scholarly journals Horses’ Use of Lying Halls and Time Budget in Relation to Available Lying Area

Animals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 3214
Author(s):  
Linda Kjellberg ◽  
Jenny Yngvesson ◽  
Hanna Sassner ◽  
Karin Morgan
Keyword(s):  
Time Budget ◽  
Housing Systems ◽  
And Behavior ◽  
Lateral Recumbency

Sleep is crucial to horses’ wellbeing, and their lying time can vary according to such factors as climate, exercise, bedding, and housing. This study aimed to analyze behavior and time spent in lying halls of various sizes. We examined the influence of housing systems on total lying time and behavior, and how changes to available lying area can affect lying time. Two open barns were used in this study, with lying areas of 8, 15, and 18 m2/horse available in the lying halls. The horses’ behavior was video recorded and logged using scan sampling and interval observations. Individual boxes were used as a control. The horses were found to spend longer time in sternal and lateral recumbency in the hall with a lying area of 18 m2/horse than the hall with a lying area of 8 m2/horse. Increasing the area of the lying hall also increased overall time spent there. Consequently, the hypothesis that increasing lying area will increase the horses’ use of the lying hall, as well as their total lying time, was accepted.

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