scholarly journals Conservation status of the recently described Ecuadorian Amazon parrot Amazona lilacina

2020 ◽  
Vol 30 (4) ◽  
pp. 586-598 ◽  
Author(s):  
REBECCA BIDDLE ◽  
IVETTE SOLIS PONCE ◽  
PAUL CUN ◽  
SIMON TOLLINGTON ◽  
MARTIN JONES ◽  
...  
Keyword(s):  
Conservation Status ◽  
Iucn Red List ◽  
Red List ◽  
Coastal Forests ◽  
The Past ◽  
Ecuadorian Amazon ◽  
Conservation Actions ◽  
Global Population ◽  
Range Estimate ◽  
Red Listing

SummaryAmazona lilacina is a threatened species endemic to Ecuador, existing across a patchwork of mangroves, lowland coastal forests, agricultural and community owned land. The species was described in 2014 and listed as ‘Endangered’ on the IUCN Red List, however, full assessment of the population was lacking. Using a combination of field observations, roost surveys and community questionnaires, conducted over the last 20 years, we provide up-to-date information on the species’ Extent of Occurrence, estimate its global population size, and evaluate its level of threat. Our results suggest the species occurs across an area of 19,890 km2 in three distinct geographically isolated subpopulations. Roost surveys across the range estimate the minimum remaining population at 741–1,090 individuals and we present evidence to suggest a 60% decline over the past 19 years in one part of the species’ range. We conducted community questionnaires with 427 people from 52 communities. The presence of pet parrots was reported in 37 communities, including 17 communities which reported pet A. lilacina. From this we predict that over half of all communities within our study area keep parrots as pets and at least 96 communities keep A. lilacina. Our findings justify an IUCN Red Listing of at least ‘Endangered’ for this species and highlight the need for conservation support. In order to assess population health in more detail, further research is required to assess genetic diversity and roost dynamics, and to identify areas that may be important for feeding and nesting throughout the range. As many of these areas are likely to overlap with community owned land, we suggest that future conservation actions should revolve around, and be led by, these communities.

scholarly journals The changing fates of the world's mammals

2011 ◽  
Vol 366 (1578) ◽  
pp. 2598-2610 ◽  
Author(s):  
Michael Hoffmann ◽  
Jerrold L. Belant ◽  
Janice S. Chanson ◽  
Neil A. Cox ◽  
John Lamoreux ◽  
...  
Keyword(s):  
Captive Breeding ◽  
Extinction Risk ◽  
Conservation Status ◽  
Iucn Red List ◽  
Red List ◽  
Mammal Species ◽  
International Union ◽  
The Status ◽  
Conservation Actions ◽  
In The Wild

A recent complete assessment of the conservation status of 5487 mammal species demonstrated that at least one-fifth are at risk of extinction in the wild. We retrospectively identified genuine changes in extinction risk for mammals between 1996 and 2008 to calculate changes in the International Union for Conservation of Nature (IUCN) Red List Index (RLI). Species-level trends in the conservation status of mammalian diversity reveal that extinction risk in large-bodied species is increasing, and that the rate of deterioration has been most accelerated in the Indomalayan and Australasian realms. Expanding agriculture and hunting have been the main drivers of increased extinction risk in mammals. Site-based protection and management, legislation, and captive-breeding and reintroduction programmes have led to improvements in 24 species. We contextualize these changes, and explain why both deteriorations and improvements may be under-reported. Although this study highlights where conservation actions are leading to improvements, it fails to account for instances where conservation has prevented further deteriorations in the status of the world's mammals. The continued utility of the RLI is dependent on sustained investment to ensure repeated assessments of mammals over time and to facilitate future calculations of the RLI and measurement against global targets.

scholarly journals Vulnerabilidad de las especies de Dytiscidae (Coleoptera) en Cuba

2018 ◽  
Vol 66 (2) ◽  
pp. 709
Author(s):  
Yoandri S. Megna ◽  
David Sánchez-Fernández ◽  
Ileana Fernández García ◽  
Bernardo Reyes-Tur ◽  
Michael Balke
Keyword(s):  
Conservation Status ◽  
Iucn Red List ◽  
Red List ◽  
Habitat Specificity ◽  
Caribbean Islands ◽  
The North ◽  
Management Measures ◽  
Diving Beetles ◽  
Threatened Taxa ◽  
Conservation Actions

Vulnerability of Dytiscidae species (Coleoptera) in Cuba. Cuba has one of the richest diving beetles species diversity in the Caribbean islands. However, Cuban Dytiscidae remain scarcely studied, and there is need to identify those species and habitats that urgently require effective conservation actions. Here we aim to identify the threatened taxa of the family Dytiscidae in Cuba according to their degree of vulnerability. For that, we compiled distributional data on the Cuban fauna, including data from literature, collections and own samplings carried out between the period 2000 and 2014. In addition, the vulnerability of the species was evaluated using a methodology that combines six criteria regarding both species and habitat attributes. This analysis of vulnerability was completed to 50 (94 %) out of 53 Cuban species. Five species (9 %) were identified as highly vulnerable, 20 (38 %) moderately and 25 (48 %) as having low conservation status. The five most threatened species were Laccodytes cobrinae, Laccophilus alariei, Copelatus barbouri, C. darlingtoni, and Desmopachria glabella. These species are endemic to Cuba and characterized by highly localized populations and low abundance as well as high habitat specificity. Thus, we propose the inclusion of these five species in both the red list of Cuban fauna and the IUCN Red List (under the category of “Vulnerable”). In addition, not all areas where these species were found belong to the National System of Protected Areas of Cuba. Thus, we suggest the inclusion of the Laguna Base Julio A. Mella and the North of Imías, and to develop effective management measures to prevent the alteration of these aquatic ecosystems. Rev. Biol. Trop. 66(2): 709-721. Epub 2018 June 01. Key words: 

scholarly journals Conservation assessment of Aquilegia paui (Ranunculaceae): a case study of an extremely narrow endemic

Oryx ◽  
2011 ◽  
Vol 45 (2) ◽  
pp. 187-190 ◽  
Author(s):  
M. Carmen Martinell ◽  
Jordi López-Pujol ◽  
Cèsar Blanché ◽  
Julián Molero ◽  
Llorenç Sàez
Keyword(s):  
Conservation Status ◽  
Limited Range ◽  
Iucn Red List ◽  
Red List ◽  
Endemic Plant ◽  
Conservation Assessment ◽  
Narrow Endemic ◽  
Conservation Actions ◽  
Endemic Plant Species

AbstractThe extremely rare Aquilegia paui (Ranunculaceae) was described in 1920 but was not found again until 1999, when it was discovered in the Parc Natural dels Ports in Tarragona Province, Spain. This species had been confused with the widespread A. vulgaris and consequently its taxonomic and conservation status had been misinterpreted. Based on the limited range of A. paui and the level of disturbance of its habitat we recommend that it is categorized as Endangered on the IUCN Red List. We summarize the conservation actions available for such extremely narrow endemic plant species and make appropriate recommendations for the conservation of A. paui.

scholarly journals The conservation status and distribution of Mediterranean dung beetles

2020 ◽  
Author(s):  
Catherine Numa ◽  
Mattia Tonelli ◽  
Jorge M. Lobo ◽  
José R. Verdú ◽  
Jean-Pierre Lumaret ◽  
...  
Keyword(s):  
Mediterranean Region ◽  
Conservation Status ◽  
Iucn Red List ◽  
Red List ◽  
Dung Beetles ◽  
Iucn Red List Categories ◽  
Macaronesian Islands ◽  
Conservation Actions ◽  
The Mediterranean ◽  
Geographical Scope

The Mediterranean Red List assessment is a review of the regional conservation status of approximately 6,000 species (amphibians, mammals, reptiles, birds, fishes, butterflies, dragonflies, beetles, corals and plants) according to the IUCN Red List Categories and Criteria. It identifies those species that are threatened with extinction at the regional level to guide appropriate conservation actions for improving their status. This report summarises the results for Mediterranean dung beetles. All the dung beetles that are endemic or nearly endemic to the Mediterranean region – 200 species – are included. The geographical scope is the Mediterranean region according to the Mediterranean Basin Biodiversity Hotspot (Mittermeier et al., 2004), with the exception of the Macaronesian islands, which have not been included in this study. Of the 644 species of dung beetles inhabiting the Mediterranean region, 200 (32%) have at least 75% of their distribution range within the borders of the region. The other 444 species, which occur over a wider area, were excluded from this assessment. Of the 200 species analysed, 150 are considered endemic as they cannot be found anywhere else in the world.

scholarly journals Conservation of endemic insular plants: the genus Ribes L. (Grossulariaceae) in Sardinia

Oryx ◽  
2011 ◽  
Vol 46 (2) ◽  
pp. 219-222 ◽  
Author(s):  
Giuseppe Fenu ◽  
Efisio Mattana ◽  
Gianluigi Bacchetta
Keyword(s):  
Field Survey ◽  
Conservation Status ◽  
Seed Viability ◽  
Iucn Red List ◽  
Small Population ◽  
Red List ◽  
Critically Endangered ◽  
Research Activities ◽  
Conservation Actions ◽  
Endangered Status

AbstractOnly two members of the genus Ribes L. (Grossulariaceae) occur in Sardinia, both endemic: R. sardoum and R. multiflorum subsp. sandalioticum. R. sardoum is categorized as Critically Endangered on the IUCN Red List and R. multiflorum subsp. sandalioticum is a rare species previously known from only a few localities. Both species grow only in mountainous areas. In 2006–2010 we carried out a field survey to verify the conservation status of R. sardoum and to estimate the number of individual plants, identify threats and assess the conservation status of R. multiflorum subsp. sandalioticum. R. sardoum is threatened by grazing, its small population, low seed viability and the activities of tourists, confirming its Critically Endangered status. We found R. multiflorum subsp. sandalioticum in 13 localities, three of which are new records, with the plants in scattered groups or singly, in three populations. The threats to R. multiflorum subsp. sandalioticum are overgrazing, the small populations, habitat fragmentation and the activities of tourists. We propose that R. multiflorum subsp. sandalioticum be categorized as Endangered on the IUCN Red List. Research activities and conservation measures for this genus on Sardinia have been proposed and some conservation actions have already commenced.

scholarly journals Decline of the Tibetan gazelle Procapra picticaudata in Ladakh, India

Oryx ◽  
2006 ◽  
Vol 40 (2) ◽  
pp. 229-232 ◽  
Author(s):  
Yash Veer Bhatnagar ◽  
Rinchen Wangchuk ◽  
Charudutt Mishra
Keyword(s):  
Tibetan Plateau ◽  
Conservation Management ◽  
Conservation Status ◽  
Iucn Red List ◽  
Red List ◽  
Livestock Grazing ◽  
The Tibetan Plateau ◽  
The Past ◽  
Northern India ◽  
Participatory Conservation

The Tibetan gazelle Procapra picticaudata is endemic to the Tibetan plateau. In the Ladakh region of northern India its range declined from c. 20,000 km2 in the early 1900s to c. 1,000 km2 in the late 1980s. Here we report the results of our recent (1999–2003) assessments of the gazelle's conservation status in Ladakh. Range-wide surveys indicate that the present population of the Tibetan gazelle in Ladakh is c. 50, restricted to a range of c. 100 km2. Populations in the Tso Kar basin and Dungti have gone extinct within the past decade. Throughout the last century hunting was the primary cause of the gazelle's decline. Although hunting has been brought under control in the last two decades, intensified livestock grazing appears to have prevented the gazelle's recovery and may be precipitating further declines. The species needs immediate, participatory conservation management, as well as a reassessment of its IUCN Red List status.

scholarly journals Giant otter Pteronura brasiliensis density and abundance in Llanos Orientales de Colombia in the Orinoco basin

Oryx ◽  
2020 ◽  
pp. 1-4
Author(s):  
Germán Garrote ◽  
Beyker Castañeda ◽  
Jose Manuel Escobar ◽  
Laura Pérez ◽  
Brayan Marín ◽  
...  
Keyword(s):  
South America ◽  
Population Size ◽  
20Th Century ◽  
Conservation Status ◽  
Species Conservation ◽  
Iucn Red List ◽  
Red List ◽  
Recreational Fishing ◽  
Pteronura Brasiliensis ◽  
Direct Counts

Abstract The giant otter Pteronura brasiliensis, categorized as Endangered on the IUCN Red List, was once widely distributed throughout South America. By the middle of the 20th century the giant otter had become locally extinct along the main rivers of the Orinoco basin. Although some populations seem to have recovered, the paucity of information available does not permit a full evaluation of the species' conservation status. The objective of this study was to estimate the abundance and density of the giant otter population along the Orinoco river in the municipality of Puerto Carreño, Vichada, Colombia, where there is important commercial and recreational fishing. Thirty-nine linear km were surveyed, repeatedly, with a total of 315 km of surveys. Population size was estimated by direct counts of individuals. All individuals detected were photographed and identified individually from their throat pelage patterns. In total, 30 otters were identified, giving a minimum density of 0.77 individuals per km, one of the highest reported for the species in Colombia. Given the high density in this well-developed area, our results highlight the importance of this population for the conservation of the species.

scholarly journals Assessment of the rarity and conservation status of the Colombian endemic brown hairy dwarf porcupine Coendou vestitus

Oryx ◽  
2020 ◽  
pp. 1-6
Author(s):  
María M. Torres-Martínez ◽  
Héctor E. Ramírez-Chaves ◽  
Elkin A. Noguera-Urbano ◽  
Fernando C. Passos
Keyword(s):  
Small Body ◽  
Conservation Status ◽  
Natural Habitat ◽  
Habitat Type ◽  
Iucn Red List ◽  
Red List ◽  
Small Range ◽  
Minimum Convex Polygon ◽  
Area Of Occupancy ◽  
Species Rarity

Abstract The brown hairy dwarf porcupine Coendou vestitus is a poorly studied Andean species endemic to Colombia. Its current Red List category is contradictory: globally it is categorized as Data Deficient but in Colombia it is categorized as Vulnerable. This contradiction has limited the implementation of conservation programmes. We evaluate the level of rarity of the species and provide consolidated information for a new assessment of its Red List status. We reviewed literature, photographs, and voucher specimens in natural history collections. Using the confirmed records, we estimated the extent of occurrence (EOO) based on the minimum convex polygon and the area of occupancy (AOO) summing the area of grid squares occupied by the species. We found that C. vestitus is very rare, with a small range, low estimated population density, occurrence in only one habitat type and small body size. The species has an EOO of 3,323 km2 and an AOO of 24 km2, based on six confirmed localities, all on the western slopes of the Eastern Cordillera, in the central Andean region of Colombia. Based on the species' rarity, restricted distribution, and threats to its natural habitat, we recommend its categorization as Endangered on the IUCN Red List. This will help delineate research and conservation efforts for this porcupine, which has a highly restricted range and inhabits the threatened Andean forest.

scholarly journals Conservation Status of Marine Biodiversity in Oceania: An Analysis of Marine Species on the IUCN Red List of Threatened Species

2011 ◽  
Vol 2011 ◽  
pp. 1-14 ◽  
Author(s):  
Beth A. Polidoro ◽  
Cristiane T. Elfes ◽  
Jonnell C. Sanciangco ◽  
Helen Pippard ◽  
Kent E. Carpenter
Keyword(s):  
Threatened Species ◽  
Environmental Changes ◽  
Extinction Risk ◽  
Conservation Status ◽  
Marine Species ◽  
Iucn Red List ◽  
Red List ◽  
Marine Biodiversity ◽  
Conservation Priorities ◽  
Conservation Action

Given the economic and cultural dependence on the marine environment in Oceania and a rapidly expanding human population, many marine species populations are in decline and may be vulnerable to extinction from a number of local and regional threats. IUCN Red List assessments, a widely used system for quantifying threats to species and assessing species extinction risk, have been completed for 1190 marine species in Oceania to date, including all known species of corals, mangroves, seagrasses, sea snakes, marine mammals, sea birds, sea turtles, sharks, and rays present in Oceania, plus all species in five important perciform fish groups. Many of the species in these groups are threatened by the modification or destruction of coastal habitats, overfishing from direct or indirect exploitation, pollution, and other ecological or environmental changes associated with climate change. Spatial analyses of threatened species highlight priority areas for both site- and species-specific conservation action. Although increased knowledge and use of newly available IUCN Red List assessments for marine species can greatly improve conservation priorities for marine species in Oceania, many important fish groups are still in urgent need of assessment.

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.

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