scholarly journals Distribution changes of Carabusspecies in Slovenia: historical data analysis

2019 ◽  
Vol 2 ◽  
Author(s):  
Urška Ratajc ◽  
Andrej Kapla ◽  
Špela Ambrožič Ergaver ◽  
Al Vrezec
Keyword(s):  
Historical Data ◽  
Conservation Status ◽  
Ground Beetles ◽  
Conservation Strategies ◽  
Distribution Area ◽  
Distribution Maps ◽  
The Past ◽  
Threat Status ◽  
Historical Data Analysis ◽  
Effective Conservation

In the past few decades, there has been a sharp decline in specialised and rare species of ground beetles (Carabus) throughout Europe. Our aim was to determine the distribution trends of chosen species and their conservation status in Slovenia. Based on historical and recent data over the period from 1850 to 2018, distribution maps for 25 species of genus Carabus have been made. The reduction in distribution area size was used to evaluate the decline of each species in Slovenia and for assigning them to different categories of threat status. Our results show that a significant number of species from genus Carabus are in decline. Open habitat species of ground beetles (C. cancellatus), ground beetles that are dependent on mature, unmanaged forests (C. glabratus, C. croaticus) and species, very sensitive to climate change (C. irregularis) were found to be the most endangered. Currently, only 3 species are on the Red list of threatened species in Slovenia (C. auronitens, C. gigas and C. variolosus nodulosus), and based on our results, at least 10 species of ground beetles should be added to the existing list. Two species of ground beetles, C. kollari and C. montivagus, have already disappeared from Slovenia in the last few decades, therefore intensive ecological studies of the remaining species and immediate effective conservation strategies are essential.

scholarly journals Co-occurring cryptic species pose challenges for conservation: a case study of the African dwarf crocodile (Osteolaemusspp.) in Cameroon

Oryx ◽  
2014 ◽  
Vol 49 (4) ◽  
pp. 584-590 ◽  
Author(s):  
Nicole L. Smolensky
Keyword(s):  
Cryptic Species ◽  
Conservation Status ◽  
Taxonomic Revision ◽  
Single Species ◽  
Conservation Strategies ◽  
Encounter Rates ◽  
Distribution Maps ◽  
Species Complexes ◽  
Threatened Taxa ◽  
Population Structures

AbstractThe conservation status of threatened taxa may be obfuscated by the detection of cryptic species complexes, in both vertebrate and invertebrate species. African dwarf crocodiles (Osteolaemusspp.) are hunted throughout their range but their conservation status is unknown. Few population assessments have been carried out and there has been a taxonomic revision of the number of species in the genus. The similar morphologies ofOsteolaemus tetraspisandOsteolaemus osbornipose a challenge for conservation in Cameroon, where they are still managed as a single species. Nocturnal spotlight surveys were conducted in three regions during August–November 2010 and December 2011–February 2012 to provide population assessments ofO. tetraspisandO. osborniand raise awareness of the two species in Cameroon. The mean encounter rates ofO. tetraspisandO. osborniwere 1.02 ± SD 1.34 (65 individuals in 39 surveys) and 0.61 ± SD 0.38 (three in four surveys) crocodiles per km, respectively. TheO. tetraspispopulation comprised juveniles predominantly and had a male-biased sex ratio. The fewO. osbornidetected comprised both adults and juveniles. Both species are threatened in Cameroon, based on low encounter rates, young population structures and the threats of habitat loss and hunting pressure. This study provides distribution maps and serves as a baseline to quantify population trends and inform conservation strategies.

The conservation status of rodents in the monsoonal tropics of the Northern Territory

2000 ◽  
Vol 27 (4) ◽  
pp. 421 ◽  
Author(s):  
J. C. Z. Woinarski
Keyword(s):  
Native Species ◽  
Historical Data ◽  
Conservation Status ◽  
Rattus Rattus ◽  
Northern Territory ◽  
Distribution Maps ◽  
Mammal Fauna ◽  
Lack Of Information ◽  
Full Complement

The rodent fauna of the monsoonal tropics of the Northern Territory comprises 23 native species and two introduced species. Three species (Zyzomys maini, Z. palatalis and Pseudomys calabyi) are endemic to the area, and four species (Pseudomys hermannsburgensis, P. desertor, P. johnsoni and Notomys alexis) enter the area only on its southern (arid) fringe. The rodent fauna is closely related to that of the Kimberley, Western Australia. Distribution maps for all species are given. One species (Z. palatalis) has an extremely restricted range and is regarded as critically endangered. The lack of information on the distribution and abundance of rodents in general in this area is evident in the national classification of five of its species (Xeromys myoides, Mesembriomys macrurus, Notomys aquilo, Pseudomys desertor and Pseudomys johnsoni) as Insufficiently Known. The two introduced rodents (Mus domesticus and Rattus rattus) are virtually restricted to urban and highly modified areas, although R. rattus also occurs on one uninhabited island. In contrast to that of much of the rest of Australia, this rodent fauna has apparently retained its full complement of species since European colonisation. This enduring legacy is attributable largely to the relatively limited modification of its environments. However, three species (Mesembriomys macrurus, Rattus tunneyi and Conilurus penicillatus) appear to be declining. The pattern of decline in these species, and in the mammal fauna generally, is obscured by the very limited historical data. However, declines appear most pronounced in the cattle country of the Victoria River District and Gulf regions. Priorities for the management of this rodent fauna include survey of poorly known areas, survey for poorly known species, monitoring of rodent communities, and landscape-wide management of the three pervasive processes with probably greatest impacts – fire, grazing and feral predators.

scholarly journals Lista Actualizada de los mamíferos de México 2012

2013 ◽  
Vol 2 (1) ◽  
pp. 27 ◽  
Author(s):  
Gerardo J. Ceballos González ◽  
Joaquín Arroyo-Cabrales
Keyword(s):  
Key Words ◽  
Conservation Status ◽  
Distribution Maps ◽  
The Past ◽  
Palabras Clave ◽  
The World ◽  
World Level

La diversidad de mamíferos silvestres de México es una de las mayores en el mundo. Estudios sobre taxonomía, sistemática y distribución en los últimos 15 años han modificado sustancialmente el número de especies del país. Aquí se presenta la lista más reciente y actualizada de los mamíferos de México. Este grupo se encuentra representado por 13 órdenes, 46 familias, 201 géneros y 548 especies, de las cuales 174 son endémicas del país. Esta es la primera vez que el número de especies registradas en el país pasa de 540. Se incluyen datos de continentalidad e insularidad, afinidad biogeográfica y estado de conservación de acuerdo tanto al gobierno federal mexicano como con organismos internacionales. En esta actualización se han agregado los mapas de distribución de las especies. pALABRAS CLAVE: México, mamíferos, presencia, distribución, conservación. The diversity of Mexican mammals is one of the largest in the World. Over the past 15-years studies on taxonomy, systematics, and distribution have modified the former mammal checklist for the country. Here we present an updated checklist that comprise 13 orders, 46 families, 201 genera, and 548 species, of which 174 are endemic to Mexico. In the checlist we include data on the distribution, biogeographic affinities, and conservation status at the National and World level. We also have included distribution maps of all the species. KEY WORDS: Mexico, mammals, presence, distribution,  conservation

scholarly journals Seasonal and regional differences in migration patterns and conservation status of Swan Geese (Anser cygnoides) in the East Asian Flyway

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Iderbat Damba ◽  
Junjian Zhang ◽  
Kunpeng Yi ◽  
Huashan Dou ◽  
Nyambayar Batbayar ◽  
...  
Keyword(s):  
Conservation Status ◽  
Ordos Basin ◽  
Population Decline ◽  
National Level ◽  
River Estuary ◽  
Autumn Migration ◽  
Conservation Strategies ◽  
Migration Routes ◽  
Annual Life Cycle ◽  
Effective Conservation

Abstract Background The Swan Goose (Anser cygnoides) breeds across Mongolia and adjacent China and Russia and winters exclusively in China. It is globally threatened, showing long-term major range contractions and declining abundance, linked to habitat loss and degradation. We remain ignorant about the biogeographical subpopulation structure of the species and potential differences in their migration timing, stopovers and schedules, information that could be vital to effective conservation of different elements of the species population, which we address here with results from a telemetry study. Methods In 2017–2018, we attached GPS/GSM telemetry devices to 238 Swan Geese on moulting sites in three discrete parts of their summering area (Dauria International Protected Area, Central Mongolia and Western Mongolia), generating 104 complete spring and autumn migration episodes to compare migration speed and nature between birds of different summer provenances. Results Birds from all three breeding areas used almost completely separate migration routes to winter sympatrically in the Yangtze River floodplain. Although many features of the spring and autumn migrations of the three groups were similar, despite the significantly longer migration routes taken by Western Mongolian tagged birds, birds from Dauria Region arrived significantly later in winter due to prolonged staging in coastal areas and took longer to reach their breeding areas in spring. Among birds of all breeding provenances, spring migration was approximately twice as fast as autumn migration. Areas used by staging Swan Geese (mainly wetlands) in autumn and spring almost never fell within national level protected areas, suggesting major site safeguard is necessary to protect these critical areas. Conclusions This study showed the discreteness of migration routes taken by birds of different summer provenances and differences in their migratory patterns, highlighting key staging areas (Yalu River Estuary in China/North Korea for Dauria Region breeding birds, Daihai Lake for Central Mongolian and Ordos Basin for Western Mongolian birds). Based on this new knowledge of the biogeographical subpopulation structure of the Swan Goose, we need to combine data on subpopulation size, their distribution throughout the annual life cycle and conservation status, to develop more effective conservation strategies and measures to reverse population decline throughout the range.

A historical data analysis of water-energy nexus in the past 30 years urbanization of Wuxi city, China

2017 ◽  
Vol 37 (1) ◽  
pp. 46-55 ◽  
Author(s):  
Xinghua Xie ◽  
Benyou Jia ◽  
Guoyi Han ◽  
Shiqiang Wu ◽  
Jiangyu Dai ◽  
...  
Keyword(s):  
Data Analysis ◽  
Historical Data ◽  
The Past ◽  
Water Energy Nexus ◽  
Historical Data Analysis ◽  
Wuxi City

Development and characterization of fungal specific microsatellite markers in the lichenLobarina scrobiculata(Lobariaceae, Ascomycota)

2015 ◽  
Vol 47 (3) ◽  
pp. 183-186 ◽  
Author(s):  
Maria Prieto ◽  
Lidia Romera ◽  
Sonia Merinero ◽  
Gregorio Aragón ◽  
Isabel Martínez
Keyword(s):  
Microsatellite Markers ◽  
Iberian Peninsula ◽  
Population Studies ◽  
Gene Diversity ◽  
Conservation Status ◽  
Natural Populations ◽  
Conservation Strategies ◽  
Unbiased Gene ◽  
Effective Conservation

AbstractLobarina scrobiculata(better known asLobaria scrobiculata) is a widespread lichen, threatened and Red-Listed in various European countries. Microsatellite markers for the mycobiont ofL. scrobiculatawere developed in order to investigate its genetic diversity in the Iberian Peninsula and Europe and to design effective conservation strategies. A total of 7 polymorphic markers were isolated and characterized. These microsatellites were tested in natural populations found in the Iberian Peninsula. The number of observed alleles ranged from 3 to 8, and the Nei's unbiased gene diversity from 0·26 to 0·59. These microsatellite markers are the first to be developed forL. scrobiculataand they will be useful for population studies and for the assessment of the conservation status of this species.

Extraction and amplification of DNA from the dried rostra of sawfishes (Pristidae) for applications in conservation genetics

2009 ◽  
Vol 15 (2) ◽  
pp. 128 ◽  
Author(s):  
N. Phillips ◽  
J. Chaplin ◽  
D. Morgan ◽  
S. Peverell
Keyword(s):  
Endangered Species ◽  
Conservation Strategies ◽  
12S Rrna ◽  
Rrna Gene ◽  
Genetic Studies ◽  
Critically Endangered Species ◽  
The Past ◽  
12S Rrna Gene ◽  
Conservation Genetic ◽  
Effective Conservation

DNA was obtained from the skin tissue of a high proportion (198/236) of dry rostra collected during the past ~30 years from the sawfishes Pristis microdon, P. clavata, P. zijsron and Anoxypristis cuspidata. DNA obtained from the dry rostra was usually either non-degraded, or only partly degraded, and was of a quality whereby a 465?468-bp portion of the mtDNA 12S rRNA gene could be PCR-amplified. These findings demonstrate that it is possible to use the dry rostra, which are generally readily available, as a source of DNA in conservation genetic studies of sawfishes. Such studies are needed for the development of effective conservation strategies for these critically endangered species, but would otherwise be greatly constrained by the difficulties of obtaining samples from sufficient numbers of living sawfishes.

scholarly journals Threat status of three important medicinal Himalayan plant species and conservation implications

2022 ◽  
Vol 7 (1) ◽  
Author(s):  
Irfan I. Sofi ◽  
◽  
Shivali Verma ◽  
Aijaz H. Ganie ◽  
Namrata Sharma ◽  
...  
Keyword(s):  
Economic Development ◽  
Plant Species ◽  
Biological Diversity ◽  
Conservation Status ◽  
Natural Populations ◽  
Road Construction ◽  
Convention On Biological Diversity ◽  
Conservation Strategies ◽  
Cold Desert ◽  
Threat Status

A lack of precise information about the threat status of species hampers their effective conservation. The Target 2 of the Convention on Biological Diversity calls for evaluation of threat status at global, national and regional levels to identify plant species of urgent conservation concern. Here we have empirically assessed the threat status of three valuable medicinal plant species (Trillium govanianum, Rheum tibeticum, and Arnebia euchroma) through extensive field studies and herbarium consultations in Kashmir Himalaya and cold desert region of Trans-Himalayan Ladakh. In accordance with the IUCN Red List categories and criteria, each of the three target species turned out to be Near Threatened (NT). According to the NatureServe Conservation Status Assessment, each of these species faces the overall threat impact of «High» to «Very high». We found that the anthropogenic threats emanating from unplanned economic development, road construction and other infrastructure related projects contribute to a fast decline in natural populations of these three species. Keeping in view the value of these species, on the one hand, and growing threats to their survival in the wild, on the other one, we call for urgent conservation strategies in the vulnerable Himalayan habitats for regional socio-economic development.

Teaching Computer Based Historical Data Analysis

1994 ◽  
Vol 6 (1) ◽  
pp. 52-58 ◽  
Author(s):  
Charles Anderson ◽  
Robert J. Morris
Keyword(s):  
Data Analysis ◽  
Social History ◽  
Historical Data ◽  
Good Practice ◽  
Computer Assisted ◽  
Historical Data Analysis ◽  
University Of Edinburgh ◽  
Computer Based ◽  
The University

A case study ofa third year course in the Department of Economic and Social History in the University of Edinburgh isusedto considerandhighlightaspects of good practice in the teaching of computer-assisted historical data analysis.

Sign in / Sign up

Export Citation Format

Share Document