scholarly journals Conservation status of the rare endemic Centaurium tenuiflorum subsp. anglicum, English Centaury (Gentianaceae)

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Elizabeth Downey ◽  
David Pearman ◽  
Tim Rich
Keyword(s):  
Conservation Status ◽  
Field Surveys ◽  
Isle Of Wight ◽  
Threat Status ◽  
The Status ◽  
Population Counts ◽  
Rare Endemic

The status of the rare English endemic Centaurium tenuiflorum subsp. anglicum, English Centaury, has been assessed from field surveys in 2020 and compared against previous population counts. In Dorset, 16 populations with c.25,800 plants occurred and there was no evidence of overall decline. It was not refound in one site in the Isle of Wight. The IUCN threat status is ‘Least Concern’.

scholarly journals Taxonomic notes on Grosourdya muriculata (Orchidaceae: Epidendroideae: Vandeae: Aeridinae), a little known endemic orchid from the Andaman & Nicobar Islands, India

2019 ◽  
Vol 11 (1) ◽  
pp. 13162-13167
Author(s):  
Sanjay Mishra ◽  
C. P. Vivek ◽  
Gautam Anuj Ekka ◽  
Lal Ji Singh
Keyword(s):  
Present Article ◽  
Conservation Status ◽  
Field Surveys ◽  
The Status ◽  
Nicobar Islands ◽  
Near Threatened

Grosourdya muriculata (Rchb.f.) R. Rice (Orchidaceae) is a little known epiphytic, endemic orchid from the Andaman & Nicobar Islands in India.  The present article provides the detailed taxonomy, ecology, distribution, conservation status, and photographic account of the species.  The data collected from field surveys indicates that the status of the species needs to be downgraded to Near Threatened as per the criteria of IUCN (2018).

scholarly journals Current Knowledge and Conservation Status of the Gray-Headed Chickadee in North America

2020 ◽  
Author(s):  
Travis L. Booms ◽  
Lucas H. DeCicco ◽  
Christopher P. Barger ◽  
James A. Johnson
Keyword(s):  
North America ◽  
Current Knowledge ◽  
Conservation Status ◽  
Field Surveys ◽  
Before And After ◽  
The Status ◽  
Available Information ◽  
Northwestern North America ◽  
Northern Alaska ◽  
Year 2000

Abstract The gray-headed chickadee Poecile cinctus is a Holarctic songbird that occurs from northern Europe across Asia and into northwestern North America. Historically, the endemic North American subspecies P. c. lathami ranged across portions of interior and northern Alaska and northwest Canada. Though often described as rare, ornithologists considered it locally common in parts of its distribution. Anecdotal reports of declines and a lack of recent observations motivated us to initiate efforts to better understand the current distribution and abundance of this species. We conducted 862 h of field surveys focused on detecting gray-headed chickadees between 2010 and 2017 and detected only three individuals and no evidence of nesting in locations where the species previously occurred. We also compiled a database of 156 occurrences that likely represents nearly all the available reliable records in North America since 1864. Based on a comparison of these data before and after the year 2000, it appears the species may no longer occur in southwestern or Interior Alaska, or the Northwest Territories where scientists previously documented it. Results from a citizen science initiative to collect recent observations revealed citizen scientists reliably report only a few gray-headed chickadee sightings annually. Additionally, the species appears to have recently disappeared from two locations where observers previously reported it annually for > 20 y. Collectively, these data suggest it is likely the species' distribution has contracted, its population has declined, and its current population size is very small in North America. We emphasize that though we base these conclusions on the best available information, more information is needed before the status of this rare species can be determined with confidence. Despite recognized limitations of the data, we failed to find any evidence contrary to our conclusions and suggest this little-studied species needs additional focused research and conservation in North America.

The current status of British mayflies and stoneflies

Zoosymposia ◽  
2016 ◽  
Vol 11 ◽  
pp. 89-100
Author(s):  
CRAIG R. MACADAM
Keyword(s):  
Conservation Status ◽  
Current Status ◽  
Sufficient Information ◽  
The United Kingdom ◽  
Threat Status ◽  
Previous Review ◽  
New Information ◽  
The Status ◽  
Data Book ◽  
The Uk

It is more than 25 years since the last review of the status of mayflies (Ephemeroptera) and stoneflies (Plecoptera) in the United Kingdom (UK). The previous review used the British Red Data Book criteria to assign conservation status to five mayfly and seven stonefly species. The criteria used for assigning the threat status in these publications had the categories Endangered, Vulnerable and Rare, which were defined rather loosely and without quantitative thresholds. The application of these categories was largely a matter of judgment, and it was not easy to apply them consistently within a taxonomic group or to make comparisons between groups of different organisms. The present review has been undertaken to provide an up to date assessment of the status of mayfly and stonefly species in the UK. The IUCN Guidelines have been revised and subsequently updated, and new information on distribution and trends is now available, making it timely to revise the status of all mayfly and stonefly species. Over 275,000 distribution records covering 51 mayfly and 34 stonefly species were analysed and new status assessments provided for these species. This process resulted in one species of stonefly and two species of mayfly being listed as extinct in the UK and a further seven species listed as being at risk of extinction, compared with five species in the previous review. A further 10 species did not have sufficient information to confidently assess their status. Twentysix species were highlighted as being either Nationally Rare or Nationally Scarce. This represents a significant increase upon the previous review when only nine species were highlighted as being Nationally Rare/Scarce.

A refined circumscription of Notobubon striatum and the resurrection of Dregea collina Ecklon & Zeyher (Apiaceae, Apioideae)

Phytotaxa ◽  
2016 ◽  
Vol 266 (1) ◽  
pp. 27 ◽  
Author(s):  
ANTHONY R. MAGEE ◽  
ODETTE E. CURTIS ◽  
B-E. VAN WYK
Keyword(s):  
Conservation Status ◽  
Leaf Size ◽  
Type Specimen ◽  
Distinct Species ◽  
Critically Endangered ◽  
Type Material ◽  
New Combination ◽  
Careful Examination ◽  
Field Surveys ◽  
Extensive Field

Extensive field surveys of the Critically Endangered Central and Eastern Rûens Shale Renosterveld have uncovered that Notobubon striatum, as currently circumscribed, comprises two distinct species. Upon careful examination of the type material it has become clear that names exist for both species. The type specimen of N. striatum clearly matches the lesser known species, a large shrub, ca. 1 m. tall, with a powerful anise-scent and which is restricted to the banks of seasonal rivers and watercourses in the Central and Eastern Rûens Shale Renosterveld. The second and better known entity, with a wider distribution, corresponds to the type material of Dregea collina Ecklon & Zeyher. As such, a new combination, Notobubon collinum (Ecklon & Zeyher) Magee, is here made to accommodate this taxon, restricted to dry quartz and silcrete patches or outcrops in Eastern Rûens Shale Renosterveld. In their revised circumscriptions N. striatum and N. collinum are readily distinguished by habit, scent, leaf size and division, as well as leaf lobe shape and sepal size. Comprehensive descriptions of both species are provided, together with notes on their ecology and conservation status, and the existing key to the species of Notobubon updated. This brings the number of recognised species in the genus to thirteen.

scholarly journals Ground beetles (Carabidae) of field margin habitats

Biologia ◽  
2020 ◽  
Vol 75 (10) ◽  
pp. 1631-1641
Author(s):  
Janina Bennewicz ◽  
Tadeusz Barczak
Keyword(s):  
Conservation Status ◽  
Ground Beetle ◽  
Abundant Species ◽  
Ground Beetles ◽  
Field Margin ◽  
Poecilus Cupreus ◽  
The Status ◽  
Beetle Assemblages ◽  
Anchomenus Dorsalis ◽  
Pterostichus Melanarius

Abstract The aim of this study was to identify the role of field margin habitats in preserving the diversity and abundance of ground beetle assemblages, including potentially entomophagous species and those with conservation status in Poland. Research material was collected in 2006–2007 in four types of margin habitats – a forest, bushes, ditches and in two arable fields. Insects were captured into pitfalls, without preservation liquid or bait added to the traps. Traps were inspected twice a week, between May and August, and one sample was a weekly capture. In field margin habitats the most abundant species were Limodromus assimilis, Anchomenus dorsalis, Pterostichus melanarius and Carabus auratus. A lower abundance of species was noted on fields, with dominant Poecilus cupreus and P. melanarius. The group of zoophagous carabids found in our study includes 30 species from field margin habitats, i.e. 37.5% of all captured Carabidae taxa and 58.3% of all specimens. The share of aphidophagous species was 84.9% among bushes, 86.7% near ditches, and 88.0% in the forest habitat. Several species captured during the study are under protection in Poland. These include the partly protected Carabus convexus, which also has the status of near threatened species, the partly protected Calosoma auropunctatum, and Broscus cephalotes. Considering all the investigated field margin habitats, ground beetles were most numerous in the oak-hornbeam habitat, defined as bushes, formed predominantly by Prunus spinosa, Crataegus leavigata, Sambucus nigra and Rosa canina. Thus, this habitat was the most important reservoir/refugium for the ground beetles.

scholarly journals The first record of Melilotoides schischkinii (Fabaceae) from Amur Region, Russia

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Marina N. Koldaeva ◽  
◽  
Valentina A. Kalinkina ◽  
Galina F. Darman ◽  
◽  
...  
Keyword(s):  
First Record ◽  
Amur Region ◽  
The Status ◽  
Rare Endemic

Information about a new locality of Melilotoides schischkinii (Vassilcz.) Soják (Fabaceae), a rare endemic to Amur Region, is provided in the article. The habitat of the plant and the status of its population in the region are described. The new locality is remote from the known range of the species, which significantly expands its distribution.

scholarly journals Conservation of Britain’s biodiversity: Distribution and status of the Welsh endemic Hieracium breconicola, Beacons Hawkweed (Asteraceae)

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Sarah J. Lee ◽  
Timothy C.G. Rich
Keyword(s):  
Critically Endangered ◽  
Endemic Plant ◽  
Conservation Action ◽  
Field Surveys ◽  
Threat Status ◽  
In The Wild

Hieracium breconicola P.D. Sell, Beacons Hawkweed, is a Welsh endemic plant confined to the Brecon Beacons. Field surveys 2009-2020 indicate only one plant survives in one of its three sites. The IUCN threat status is ‘Critically Endangered’; unless conservation action is undertaken soon, this species will soon be extinct in the wild.

scholarly journals DNA barcode identification of commercial fish sold in Mexican markets

Genome ◽  
2018 ◽  
Vol 61 (6) ◽  
pp. 457-466 ◽  
Author(s):  
Stephanie Sarmiento-Camacho ◽  
Martha Valdez-Moreno
Keyword(s):  
Conservation Status ◽  
Dna Barcode ◽  
Common Species ◽  
Morphological Identification ◽  
Dna Barcodes ◽  
Commercial Fish ◽  
Sphyrna Lewini ◽  
Pangasianodon Hypophthalmus ◽  
Makaira Nigricans ◽  
The Status

The substitution of high-value fish species for those of lower value is common practice. Although numerous studies have addressed this issue, few have been conducted in Mexico. In this study, we sought to identify fresh fillets of fish, sharks, and rays using DNA barcodes. We analyzed material from “La Viga” in Mexico City, and other markets located on the Gulf and Caribbean coasts of Mexico. From 134 samples, we obtained sequences from 129, identified to 9 orders, 28 families, 38 genera, and 44 species. The most common species were Seriola dumerili, Pangasianodon hypophthalmus, Carcharhinus falciformis, Carcharhinus brevipinna, and Hypanus americanus. Pangasianodon hypophthalmus was most commonly used as a substitute for higher-value species. The substitution rate was 18% of the total. A review of the conservation status of the specimens identified against the IUNC list enabled us to establish that some species marketed in Mexico are threatened: Makaira nigricans, Lachnolaimus maximus, Hyporthodus flavolimbatus, and Isurus oxyrinchus are classified as vulnerable; Lopholatilus chamaeleonticeps and Sphyrna lewini are endangered; and the status of Hyporthodus nigritus is critical. These results will demonstrate to the Mexican authorities that DNA barcoding is a reliable tool for species identification, even when morphological identification is difficult or impossible.

Hysterionica chamomilloides (Asteraceae: Astereae) a new species from the grassland ecosystem of Río de La Plata

Phytotaxa ◽  
2021 ◽  
Vol 482 (1) ◽  
pp. 36-44
Author(s):  
LEONARDO PAZ DEBLE
Keyword(s):  
New Species ◽  
Conservation Status ◽  
Morphological Description ◽  
Similar Species ◽  
South American ◽  
Review Of Literature ◽  
South American Species ◽  
Field Surveys ◽  
Mountainous Regions ◽  
A New Species

Hysterionica s.l. (including Neja) comprises ca. 15 species distributed mainly in the grasslands of southern Brazil, Uruguay, central and northern Argentina and Southern Paraguay. Based on field surveys, study of nomenclatural types and other specimens, and review of literature, a new species is proposed here, Hysterionica chamomilloides, endemic of mountainous regions of northern Uruguay, and southwestern Rio Grande do Sul state, Brazil. This work provides a detailed morphological description of the new species, information on its geographic distribution, habitat, phenology, conservation status, and discusses the main differences between H. chamomilloides and the morphologically most similar species. Illustrations, images and a key to the South American species of Hysterionica are also supplied.

Biology, Management, and Conservation of Lampreys in North America

2009 ◽  
Keyword(s):  
British Columbia ◽  
Conservation Status ◽  
Sea Lamprey ◽  
Great Lakes Basin ◽  
Brook Lamprey ◽  
The Status ◽  
Lethenteron Camtschaticum ◽  
Special Concern ◽  
Data Deficient ◽  
Lamprey Species

<em>Abstract</em>.—There are 11 lamprey species in Canada: Vancouver lamprey <em>Entosphenus macrostomus</em> (formerly <em>Lampetra macrostoma</em>), Pacific lamprey <em>Entosphenus tridentatus</em> (formerly <em>Lampetra tridentata</em>), chestnut lamprey <em>Ichthyomyzon castaneus</em>, northern brook lamprey <em>Ichthyomyzon fossor</em>, silver lamprey <em>Ichthtyomyzon unicuspis</em>, river lamprey <em>Lampetra ayresii</em>, western brook lamprey <em>Lampetra richardsoni</em>, Alaskan brook lamprey <em>Lethenteron alaskense</em>, American brook lamprey <em>Lethenteron appendix</em> (formerly <em>Lampetra appendix</em>), Arctic lamprey <em>Lethenteron camtschaticum</em> (formerly <em>Lampetra camtschatica</em>), and sea lamprey <em>Petromyzon marinus</em>. <em>Entosphenus</em> and <em>Lethenteron</em> were previously synonymized with <em>Lampetra</em>, but Nelson (2006) recognized these as three distinct genera. Conservation status has been assessed in only five species and in two of these (western brook lamprey and chestnut lamprey), only for portions of their Canadian population. The 2007 Committee on the Status of Endangered Wildlife in Canada list indicates that the enigmatic population of western brook lamprey in Morrison Creek, British Columbia, is endangered; the Vancouver lamprey in British Columbia is threatened; the chestnut lamprey in Saskatchewan and Manitoba is special concern; the northern brook lamprey in Manitoba, Ontario, and Quebec is of special concern in the latter two provinces and data deficient in the former; and the Alaskan brook lamprey in the Northwest Territories is data deficient. The threats to the four species at risk were collectively related to habitat degradation and loss, sensitivity to a catastrophic event, and sensitivity to lampricide used to control the invasive sea lamprey in the Great Lakes basin. Despite much lamprey work being conducted in the past decade, there still remain a number of knowledge gaps. These gaps include unequivocal evidence as to whether parasitic and nonparasitic members of a paired species should be considered distinct species and information on the distribution and population sizes and trends of the native lamprey species.

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