scholarly journals EVALUATING CONSERVATION STATUS, THREATS AND POPULATION TRENDS OF LEUCADENDRON, A PLANT GENUS ENDEMIC TO THE CAPE REGION IN SOUTH AFRICA

2021 ◽  
Vol 56 ◽  
pp. 45-52
Author(s):  
Samuel O BAMIGBOYE ◽  
Keyword(s):  
South Africa ◽  
South African ◽  
Endemic Species ◽  
Conservation Status ◽  
Biodiversity Loss ◽  
Red List ◽  
Habitat Destruction ◽  
Current Conservation ◽  
Risk Of Extinction ◽  
Global Extinction

Declines in endemic species have significant impact on global biodiversity loss. More efforts need to be harnessed to further protect endemic species from the current global extinction crisis. This study evaluated the current conservation status, factors responsible for risk of extinction and the trends in populations of Leucadendron, a plant genus endemic to the Cape region in South Africa. The SANBI (South African National Biodiversity Institute) Red List was employed in this study. The results revealed that over 50% of taxa in this genus are threatened and most of the species are exposed to habitat destruction and the presence of invasive species. It was also discovered that two species of this genus are currently extinct, which implies this genus is facing a high risk of extinction. More efforts, such as designing effective methods of controlling forces responsible for the risk of extinction of taxa in this genus, should be put in place to prevent their complete extirpation in future.

scholarly journals Evaluating threats and conservation status of South African Aloe

2020 ◽  
Vol 12 (11) ◽  
pp. 16614-16619
Author(s):  
Samuel O. Bamigboye
Keyword(s):  
South Africa ◽  
South African ◽  
Conservation Management ◽  
Conservation Status ◽  
Red List ◽  
Biodiversity Hotspots ◽  
The South ◽  
Risk Of Extinction ◽  
Two Factors ◽  
Conservation Concern

South Africa is one of the biodiversity hotspots for Aloe in Africa.  This makes it important to evaluate the conservation status and threats to this genus.  The South African National Biodiversity Institute (SANBI) Red List was employed to evaluate these two factors.  Results revealed that 44% of all species in this genus are of conservation concern with the majority of them facing threats.  This study recommends that more attention such as strengthening the protection of these species and controlling the threats identified in this study should be given to species in this genus in terms of conservation management to reduce their risk of extinction.   

The rediscovery of the Southern Swallowtail (Papilio alexanor Esper, 1799) in Bosnia & Herzegovina after 50 years of absence

2019 ◽  
Vol 70 (1) ◽  
pp. 27-30
Author(s):  
Toni Koren ◽  
Matea Martinović
Keyword(s):  
Host Plant ◽  
Bosnia And Herzegovina ◽  
Recent Observation ◽  
Conservation Status ◽  
Red List ◽  
Historical Records ◽  
Limited Extent ◽  
Current Conservation ◽  
The Third ◽  
Larval Host

The caterpillars of the Southern Swallowtail, Papilio alexanor have been recorded in the vicinity of Trebinje, Bosnia & Herzegovina. This is the first recent observation of this species in the country and the third observation so far. Opopanax chironium is confirmed as the larval host plant in Bosnia and Herzegovina, which was expected due to the recent observations from Croatia. Its status and distribution in the country are still not clear, and further surveys are recommended in order to reconfirm the historical records as well as to assess its current conservation status. Due to the limited extent of its occurrence, we propose to include it in the Red list of fauna of Bosnia & Herzegovina as Vulnerable (VU).

Stellarioides littoralis (Asparagaceae, Scilloideae), a distinct new species from eastern South Africa

Phytotaxa ◽  
2014 ◽  
Vol 177 (5) ◽  
pp. 261 ◽  
Author(s):  
Neil R. Crouch ◽  
Mario Martínez-Azorín ◽  
Angela J. Beaumont ◽  
David Styles
Keyword(s):  
South Africa ◽  
New Species ◽  
South African ◽  
Endemic Species ◽  
New South ◽  
Morphological Features

A new South African endemic species, Stellarioides littoralis is described and illustrated, with data provided on morphology, ecology and distribution. The species appears to be closely related to S. longibracteata and whilst it shares in common an epigeal habit of the bulb with the latter species, several reproductive and vegetative morphological features clearly distinguish it. The affinities and divergences with other close allies are also discussed.

scholarly journals Co-extinct and critically co-endangered species of parasitic lice, and conservation-induced extinction: should lice be reintroduced to their hosts?

Oryx ◽  
2014 ◽  
Vol 49 (1) ◽  
pp. 107-110 ◽  
Author(s):  
Lajos Rózsa ◽  
Zoltán Vas
Keyword(s):  
Endangered Species ◽  
Host Specificity ◽  
Host Species ◽  
Conservation Status ◽  
Iucn Red List ◽  
Red List ◽  
Published Data ◽  
Common Phenomenon ◽  
Global Extinction

AbstractThe co-extinction of parasitic taxa and their host species is considered a common phenomenon in the current global extinction crisis. However, information about the conservation status of parasitic taxa is scarce. We present a global list of co-extinct and critically co-endangered parasitic lice (Phthiraptera), based on published data on their host-specificity and their hosts’ conservation status according to the IUCN Red List. We list six co-extinct and 40 (possibly 41) critically co-endangered species. Additionally, we recognize 2–4 species that went extinct as a result of conservation efforts to save their hosts. Conservationists should consider preserving host-specific lice as part of their efforts to save species.

scholarly journals Rediscovery of Scorzonera amasiana Hausskn. and Bornm. - A threatened endemic species in Turkey

1970 ◽  
Vol 36 (2) ◽  
pp. 139-144 ◽  
Author(s):  
Fergan Karaer ◽  
Ferhat Celep
Keyword(s):  
Endemic Species ◽  
Human Impacts ◽  
Conservation Status ◽  
The Other ◽  
Conservation Strategies ◽  
Small Populations ◽  
Distribution Map ◽  
Type Specimens ◽  
Current Conservation ◽  
Iucn Criteria

Scorzonera amasiana Hausskn. and Bornm. was described from type specimens collected by J.F.N. Bornmueller in 1889 but it was not collected again until 1993, when it was found near Amasya, Turkey. Populations of S. amasiana were quite small at that limited locations and were vulnerable to human impacts. Therefore, suitable conservation strategies should be developed immediately in order to protect the species from probable extinction. Here, an additional three small populations are reported. Brief history, morphology, habitat and ecology of this endemic species have been discussed. Its current conservation status was reevaluated with respect to the latest IUCN criteria. A key to distinguish it from the other closely related Turkish species is also provided and its distribution map is appended.   Key words: Endangered, Rediscovery, Scorzonera, Turkey DOI = 10.3329/bjb.v36i2.1502 Bangladesh J. Bot. 36(2): 139-144, 2007 (December)

scholarly journals Conservation-Status Gaps for Marine Top-Fished Commercial Species

Fishes ◽  
2021 ◽  
Vol 7 (1) ◽  
pp. 2
Author(s):  
Imanol Miqueleiz ◽  
Rafael Miranda ◽  
Arturo Hugo Ariño ◽  
Elena Ojea
Keyword(s):  
Fish Species ◽  
Conservation Status ◽  
Species Conservation ◽  
Biodiversity Loss ◽  
Vulnerability Index ◽  
Iucn Red List ◽  
Red List ◽  
Commercial Fish ◽  
Commercial Species ◽  
Marine Realm

Biodiversity loss is a global problem, accelerated by human-induced pressures. In the marine realm, one of the major threats to species conservation, together with climate change, is overfishing. In this context, having information on the conservation status of target commercial marine fish species becomes crucial for assuring safe standards. We put together fisheries statistics from the FAO, the IUCN Red List, FishBase, and RAM Legacy databases to understand to what extent top commercial species’ conservation status has been assessed. Levels of assessment for top-fished species were higher than those for general commercial or highly commercial species, but almost half of the species have outdated assessments. We found no relation between IUCN Red List traits and FishBase Vulnerability Index, depreciating the latter value as a guidance for extinction threat. The RAM database suggests good management of more-threatened species in recent decades, but more data are required to assess whether the trend has reverted in recent years. Outdated IUCN Red List assessments can benefit from reputed stock assessments for new reassessments. The future of IUCN Red List evaluations for commercial fish species relies on integrating new parameters from fisheries sources and improved collaboration with fisheries stakeholders and managers.

scholarly journals Trends in numbers of Cape gannets (Morus capensis), 1956/1957–2005/2006, with a consideration of the influence of food and other factors

2006 ◽  
Vol 64 (1) ◽  
pp. 169-177 ◽  
Author(s):  
Robert J. M. Crawford ◽  
Benedict L. Dundee ◽  
Bruce M. Dyer ◽  
Norbert T. W. Klages ◽  
Michael A. Meÿer ◽  
...  
Keyword(s):  
South Africa ◽  
South African ◽  
Conservation Status ◽  
Fish Prey ◽  
Management Measures ◽  
Fur Seals ◽  
Long Term Changes ◽  
Influence Of Food ◽  
Abundance And Distribution

Abstract Crawford, R. J. M., Dundee, B. L., Dyer, B. M., Klages, N. T., Meÿer, M. A., and Upfold, L. 2007. Trends in numbers of Cape gannets (Morus capensis), 1956/57–2005/06, with a consideration of the influence of food and other factors – ICES Journal of Marine Science, 64, 169–177. Cape gannets (Morus capensis) breed at six colonies in Namibia and South Africa. Population size averaged about 250 000 pairs over the period 1956/1957–1968/1969 and about 150 000 pairs from 1978/1979 to 2005/2006. Over the whole 50-y period, numbers at the three Namibian colonies fell by 85–98%, with greater proportional decreases in the south. There were increases at two South African colonies between 1956/1957 and 2005/2006. The colony at Lambert's Bay increased between 1956/1957 and 2003/2004, but attacks by Cape fur seals (Arctocephalus pusillus) on birds at nests caused abandonment of the entire colony in 2005/2006. Long-term changes at colonies are thought to be largely attributable to an altered abundance and distribution of prey, especially sardine (Sardinops sagax) and anchovy (Engraulis encrasicolus). In both Namibia and South Africa, the numbers of Cape gannets breeding were significantly related to the biomass of epipelagic fish prey. Over the 50-y period, there was also a marked similarity in the proportions of gannets and epipelagic fish in the Benguela system, which were present in Namibia and South Africa. In the 2000s, there was an eastward shift in the distribution of sardine off South Africa and a large increase in the number of gannets breeding at South Africa's easternmost colony. When sardine were scarce off South Africa, gannets fed on anchovy, but off Namibia anchovy only temporarily and partially replaced sardine. Ecosystem management measures that might improve the conservation status of Cape gannets are considered.

scholarly journals Overview of the conservation status of Australian frogs

2006 ◽  
Vol 12 (4) ◽  
pp. 313 ◽  
Author(s):  
Jean-Marc Hero ◽  
Clare Morrison ◽  
Graeme Gillespie ◽  
J. Dale Roberts ◽  
David Newell ◽  
...  
Keyword(s):  
Conservation Status ◽  
Iucn Red List ◽  
Red List ◽  
Individual Species ◽  
Amphibian Species ◽  
Current Conservation ◽  
World Conservation ◽  
Iucn Red List Categories ◽  
Threatening Processes ◽  
Red List Categories

A review of the current conservation status of Australian amphibians was recently completed as part of a World Conservation Union (IUCN) sponsored Global Amphibian Assessment (GAA). Fifty of 216 amphibian species (23%) in Australia are now recognized as threatened or extinct in accord with IUCN Red List Categories and Criteria. Here we report on the categories and criteria under which individual species qualified for listing and provide a summary of supporting information pertaining to population and distribution declines. Major threatening processes contributing to listing of species are also reviewed.

scholarly journals Integrative taxonomic reassessment of Odontophrynus populations in Argentina and phylogenetic relationships within Odontophrynidae (Anura)

2018 ◽  
Author(s):  
Adolfo Ludovico Martino ◽  
Jonas Maximilian Dehling ◽  
Ulrich Sinsch
Keyword(s):  
Conservation Management ◽  
Biodiversity Loss ◽  
Red List ◽  
Habitat Destruction ◽  
Advertisement Call ◽  
Cryptic Diversity ◽  
Call Structure ◽  
16S Gene ◽  
Centre Of Diversity ◽  
Taxonomic Methods

Amphibians are the most vulnerable vertebrates to biodiversity loss mediated by habitat destruction, climate change and diseases. Informed conservation management requires to improve the taxonomy of anurans to assess reliably the species´ geographic range. In this study, we applied robust integrative taxonomic methods combining genetic (allozymes, mitochondrial 16S gene), morphological and behavioural data (advertisement call structure) to delimit species of the genus Odontophrynus sampled from throughout their centre of diversity in Argentina. The combined evidence used to assess the validity of the nominal taxa demonstrates one case of cryptic diversity and another of overestimation of species richness. The tetraploid populations referred to as O. americanus comprise at least two species. In contrast, O. achalensis and O. barrioi represent junior synonyms of the phenotypically plastic species O. occidentalis. We conclude that each of the four species occurring in Argentina possesses networks of populations in medium to large areas. Red list classification is currently “least concern”. We also propose a phylogenetic hypothesis for the genus and associated genera Macrogenioglottus and Proceratophrys (Odontophrynidae) and discuss its implications on advertisement call evolution.

scholarly journals Online appendix 1:South African National Survey of Arachnida: A checklist of the spiders (Arachnida, Araneae) of the Lekgalameetse Nature Reserve, Limpopo province, South Africa

Koedoe ◽  
2016 ◽  
Vol 58 (1) ◽  
Author(s):  
Stefan H. Foord ◽  
Anna S. Dippenaar-Schoeman ◽  
Rudy Jocqué ◽  
Charles R. Haddad ◽  
Robin Lyle ◽  
...  
Keyword(s):  
South Africa ◽  
South African ◽  
National Survey ◽  
Nature Reserve ◽  
Conservation Status ◽  
Distribution Patterns ◽  
Limpopo Province ◽  
Specific Information ◽  
Spider Species ◽  
Online Appendix

The aim of the South African National Survey of Arachnida (SANSA) is to document the Arachnida fauna of South Africa. One of the focus areas of SANSA is to survey protected areas to obtain species-specific information, and species distribution patterns for Red Data assessments. Here, we provide the first checklist of the spider species of Lekgalameetse Nature Reserve (LNR) in the Limpopo province of South Africa collected during five surveys between 2009 and 2016 using methods targeting both the ground and field layers. Forty-five families, represented by 168 genera and 268 species, have been collected so far. The most species-rich families were the Salticidae (41 spp.) and Araneidae (38 spp.), followed by the Thomisidae (33 spp.), while 11 families were represented by one species. Information on spider guilds, endemicity value and conservation status are provided. The LNR protects approximately 12.2% of the total South African spider fauna. Two species, Hasarinella distincta Haddad & Wesołowska, 2013 (Salticidae) and Ballomma legala Jocqué & Henrard, 2015 (Zodariidae), are presently known to be endemic to the reserve.Conservation implications: The LNR falls within the Savanna Biome in the Limpopo province. Only five spider species were previously known from the reserve and 263 spp. are reported from the reserve for the first time. Thirteen species are possibly new to science and 2 species represent new distribution records for South Africa.

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