scholarly journals Natural history of the critically endangered salamander Pseudoeurycea robertsi

2019 ◽  
Author(s):  
Armando Sunny ◽  
Carmen Caballero-Viñas ◽  
Luis Duarte-deJesus ◽  
Fabiola Ramírez-Corona ◽  
Javier Manjarrez ◽  
...  
Keyword(s):  
Endangered Species ◽  
Natural History ◽  
Ecological Niche Modeling ◽  
Critically Endangered ◽  
Conservation Strategies ◽  
Morphometric Study ◽  
Natural Habitats ◽  
Plethodontid Salamander ◽  
Nevado De Toluca ◽  
Salamander Species

Mexico is one of the most diverse countries that is losing a large amount of forest due to land use change, these data put Mexico in fourth place for global deforestation rate, therefore, Mexico occupies the first place in number of endangered species in the world with 665 endangered species. It is important to study amphibians because they are among the most threatened vertebrates on Earth and their populations are rapidly declining worldwide due primarily to the loss and degradation of their natural habitats. Pseudoeurycea robertsi is a micro-endemic and critically endangered Plethodontid salamander from the Nevado de Toluca Volcano and to date almost nothing is known about its natural history therefore, we survey fourteen sites of the Nevado de Toluca Volcano a mountain that is part of the Trans-Mexican Volcanic Belt, Mexico. We carry out the most exhaustive sampling scheme of this species throughout the Nevado de Toluca Volcano to know the number of individuals and the microhabitat features associated with the presence of P. robertsi. Likewise, we carry out a morphometric study and coloration measurements of P. robertsi individuals and we determine the potential distribution of P. robertsi and the other 3 species of pletodontids present in the NTV using ecological niche modeling and to determine the most important habitat features associated with the presence of salamander species, as well as to know the niche overlap among salamander species. This information will help raise conservation strategies for this micro-endemic and critically endangered salamander.

scholarly journals Natural history of the critically endangered salamander Pseudoeurycea robertsi

2019 ◽  
Author(s):  
Armando Sunny ◽  
Carmen Caballero-Viñas ◽  
Luis Duarte-deJesus ◽  
Fabiola Ramírez-Corona ◽  
Javier Manjarrez ◽  
...  
Keyword(s):  
Endangered Species ◽  
Natural History ◽  
Ecological Niche Modeling ◽  
Critically Endangered ◽  
Conservation Strategies ◽  
Morphometric Study ◽  
Natural Habitats ◽  
Plethodontid Salamander ◽  
Nevado De Toluca ◽  
Salamander Species

Mexico is one of the most diverse countries that is losing a large amount of forest due to land use change, these data put Mexico in fourth place for global deforestation rate, therefore, Mexico occupies the first place in number of endangered species in the world with 665 endangered species. It is important to study amphibians because they are among the most threatened vertebrates on Earth and their populations are rapidly declining worldwide due primarily to the loss and degradation of their natural habitats. Pseudoeurycea robertsi is a micro-endemic and critically endangered Plethodontid salamander from the Nevado de Toluca Volcano and to date almost nothing is known about its natural history therefore, we survey fourteen sites of the Nevado de Toluca Volcano a mountain that is part of the Trans-Mexican Volcanic Belt, Mexico. We carry out the most exhaustive sampling scheme of this species throughout the Nevado de Toluca Volcano to know the number of individuals and the microhabitat features associated with the presence of P. robertsi. Likewise, we carry out a morphometric study and coloration measurements of P. robertsi individuals and we determine the potential distribution of P. robertsi and the other 3 species of pletodontids present in the NTV using ecological niche modeling and to determine the most important habitat features associated with the presence of salamander species, as well as to know the niche overlap among salamander species. This information will help raise conservation strategies for this micro-endemic and critically endangered salamander.

scholarly journals A Salamander tale: Relative abundance, morphometrics and microhabitat of the critically endangered Mexican salamander Pseudoeurycea robertsi (Taylor, 1939)

Herpetozoa ◽  
2021 ◽  
Vol 34 ◽  
pp. 35-47
Author(s):  
Armando Sunny ◽  
Hublester Domínguez-Vega ◽  
Carmen Caballero-Viñas ◽  
Fabiola Ramírez-Corona ◽  
Marco Suárez-Atilano ◽  
...  
Keyword(s):  
Genetic Data ◽  
Critically Endangered ◽  
Correct Identification ◽  
Basic Information ◽  
Morphometric Measurements ◽  
Plethodontid Salamander ◽  
Nevado De Toluca ◽  
Abies Religiosa ◽  
Salamander Species ◽  
Dorsal Stripe

Roberts’ False Brook Salamander (Pseudoeurycea robertsi) is a critically endangered plethodontid salamander, endemic to the Nevado de Toluca Volcano (NTV), Mexico. Little is known about the biology and ecology of this species, including its microhabitats. Thus, this study aimed to collect basic information about P. robertsi. We sampled fourteen forested sites in the NTV; to corroborate the correct identification of the species we used genetic data, we assessed the variation in head morphometric measurements and dorsal colouration patterns amongst localities and the microhabitat features associated with P. robertsi presence. Of the four potential salamander species, P. robertsi was the most abundant (89.80%) and widely distributed (approximately within 130 km2) salamander in the NTV. We did not find significant variations in morphometry; however, we found significant differences in dorsal patterns between populations (in the number and size of segments of the dorsal stripe). The average total length for 185 adults was 89.15 mm (38.7–117.9 mm); we found seven patterns of dorsal stripe. We found 98% of P. robertsi individuals under the bark of fallen logs in Abies religiosa and A. religiosa-Pinus sp. forests, with a higher number of detected salamanders in naturally-fallen logs than in cut logs (34% vs. 10%). Thus, keeping well-preserved A. religiosa forests and retaining fallen logs is essential to P. robertsi conservation.

The Atlantic Goliath Grouper: Conservation Strategies for a Critically Endangered Species in Brazil

2017 ◽  
pp. 367-405
Author(s):  
Maurício Hostim-Silva ◽  
Áthila A. Bertoncini ◽  
Maíra Borgonha ◽  
Jonas Rodrigues Leite ◽  
Matheus O. Freitas ◽  
...  
Keyword(s):  
Endangered Species ◽  
Critically Endangered ◽  
Conservation Strategies ◽  
Critically Endangered Species ◽  
Goliath Grouper

Natural History of the Mocha Island Ground Frog Eupsophus insularis, a Critically Endangered Species

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Gabriel Lobos ◽  
Nicolás Rebolledo ◽  
Andrés Charrier ◽  
Claudio Correa ◽  
Felipe Rabanal ◽  
...  
Keyword(s):  
Endangered Species ◽  
Natural History ◽  
Critically Endangered ◽  
Critically Endangered Species ◽  
History Of

Present and future of the critically endangered Araucaria angustifolia due to climate change and habitat loss

2019 ◽  
Vol 93 (3) ◽  
pp. 401-410 ◽  
Author(s):  
Cesar A Marchioro ◽  
Karine L Santos ◽  
Alexandre Siminski
Keyword(s):  
Climate Change ◽  
Critically Endangered ◽  
Conservation Strategies ◽  
Forest Conversion ◽  
Araucaria Angustifolia ◽  
Natural Habitats ◽  
Agricultural Conversion ◽  
Key Species ◽  
On Farm

Abstract The critically endangered Brazilian pine, also called araucaria, (Araucaria angustifolia (Bertol.) Kuntze) is a key species of the Araucaria moist forest (AMF, Mixed Ombrophilous Forest). Illegal timber extraction, agricultural conversion and severe degradation have reduced the AMF to only 13 per cent of its original cover, with climate change imposing additional challenges for cold adapted species such as araucaria. Previous studies have assessed climate change impacts on A. angustifolia, but have been limited by analysis constraints. Here, we used a machine learning technique to understand how land use and climate change might affect the distribution of A. angustifolia, and to evaluate the effectiveness of existing protected areas (PAs) to conserve this species. Our results demonstrated that despite the recent efforts to conserve the Atlantic Forest, conversion of natural habitats into forest plantation still occurs within araucaria’s distribution range. Our model predicted a drastic reduction in environmentally suitable areas for this species of up to 77 per cent in the coming decades. Also, the existing PAs show low efficacy to protect suitable areas in the future. Combined, these results suggest that A. angustifolia will be under great threat within the next few decades and the development of conservation strategies to save this species is essential. Ideally, the conservation programs should integrate in situ and on farm approaches, including forest management strategies. Although in situ strategies play an important role as gene banks, on-farm strategies can be used to promote the restoration and expansion of A. angustifolia populations in the areas predicted as suitable.

scholarly journals The avian collection of the former Saint Augustine College of the Regional Natural History Museum in Plovdiv

2019 ◽  
Vol 35 ◽  
pp. 1-11
Author(s):  
Zlatozar Boev ◽  
Ognyan Todorov
Keyword(s):  
Endangered Species ◽  
Natural History ◽  
Conservation Status ◽  
Saint Augustine ◽  
Natural History Museum ◽  
Critically Endangered ◽  
History Museum ◽  
Catholic College ◽  
Exotic Birds

The paper presents a catalogue of bird specimens (dry mounted preserves) survived after the closing (1948) of the former Catholic College “Saint Augustine”. Currently, the studied specimens are kept at the Regional Natural History Museum in Plovdiv. The collection includes a total of 193 species of birds of 81 families and 28 orders, represented by 205 specimens (circa two percent of the recent World avifauna). Over 15 percent of the species have an IUCN conservation status (NT to CR). The most valuable are the following specimens: critically endangered grey-backed myna (Acridotheres tricolor) and two endangered species - echo parakeet (Psittacula eques) and sooty albatross (Phoebetria fusca). This is the 2nd largest collection of exotic birds in Bulgaria.

scholarly journals Water-bug (Abedus SP.; Belostomatidae) Predation on the Critically Endangered Atelopus varius (Bufonidae) at Las Tablas Protected Zone, Costa Rica

2019 ◽  
Vol 24 (2) ◽  
pp. 403-406
Author(s):  
José F. González-Maya ◽  
Diego A. Gómez-Hoyos ◽  
Rocio Seisdedos-de-Vergara ◽  
Iván Cruz-Lizano ◽  
Jan Schipper
Keyword(s):  
Costa Rica ◽  
Endangered Species ◽  
Natural History ◽  
Reproductive Season ◽  
Critically Endangered ◽  
Critically Endangered Species ◽  
Conservation Measures ◽  
New Information ◽  
Water Bugs ◽  
Protected Zone

Atelopus varius was believed to be extinct in Costa Rica until the rediscovery of a population within the Las Tablas Protected Zone (LTPZ) in 2008. This rediscovery represented a research and conservation opportunity, including contributing new information about the species´ natural history. There are few reported species that prey on A. varius. This report presents a new predation record by a species of water bug (Abedus spp.) on an adult harlequin frog (A. varius). This is only the second confirmed predator for the species. These water bugs have been reported to prey on anurans during reproductive seasons, but in this case, the event occurred on A. varius out of their reproductive season. The effects of water bug predation on the only known reproductive population of this Critically Endangered species needs to be assessed to consider appropriate conservation measures to prevent further decline of the species.

Two new critically endangered species of Hippeastrum (Amaryllidaceae) from the Brazilian Cerrado

Phytotaxa ◽  
2018 ◽  
Vol 360 (2) ◽  
pp. 91
Author(s):  
ANTONIO CAMPOS-ROCHA ◽  
ALAN WILLIAM MEEROW ◽  
JULIE HENRIETTE ANTOINETTE DUTILH
Keyword(s):  
New Species ◽  
Endangered Species ◽  
Conservation Status ◽  
Critically Endangered ◽  
Similar Species ◽  
Brazilian Cerrado ◽  
Natural Habitats ◽  
Cerrado Biome ◽  
Critically Endangered Species ◽  
Two New Species

Monographic work on the genus Hippeastrum in Brazil has revealed two new species endemic to the Cerrado biome, here described and illustrated. Hippeastrum lunaris is a species restricted to the region of Chapada dos Veadeiros; H. mauroi is so far found only in Chapada dos Guimarães. Detailed descriptions, illustrations and taxonomic comments on the conservation status of these species are provided, in addition to comparisons with morphologically similar species. An identification key to the species of Hippeastrum occurring in the Brazilian Cerrado is presented, accompanied by photographs of these species in their natural habitats.

Sign in / Sign up

Export Citation Format

Share Document