scholarly journals The Presence of IUCN Red List Tree Species in Dependence of Site Characteristics in the Vietnamese Cat Ba National Park

Diversity ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 104
Author(s):  
Van Vien Pham ◽  
Christian Ammer ◽  
Peter Annighöfer
Keyword(s):  
Protected Areas ◽  
Tree Species ◽  
National Park ◽  
Soil Depth ◽  
Iucn Red List ◽  
Red List ◽  
Rock Surface ◽  
Cluster Sampling ◽  
Endangered Tree ◽  
Site Characteristics

Rare or endangered tree species are important components of forest ecosystems and play a crucial role in management and conservation. Understanding what influences their presence is critical for managers, conservationists and planners. This study presents results of a comprehensive inventory of the tree species and site characteristics in the Vietnamese Cat Ba National Park (CBNP). An adaptive cluster sampling technique was applied to study the effect of human disturbance, soil properties, and terrain conditions on the presence of IUCN Red List tree species (all individuals > 5 cm diameter at breast height) in three strictly protected areas in CBNP, which have varying levels of isolation. Data from 239 sample plots (500 m2 each) were analyzed. Tree species recorded during the inventory were assigned to two categories: IUCN Red List and other. Our results showed that site characteristics differed in the three protected areas along with the presence of IUCN Red List tree species. IUCN Red List tree species were more frequently found on less favorable soils (low soil depth) and in terrain with more pronounced slopes and with a higher rock surface area (%). However, there is no indication from existing information on the autecology of the different Red List species that the site conditions hosting the species are the ones favored by the species, even on the contrary for some. Although direct signs of human activity (paths, animal traps) could not be related to the presence of Red List tree species, the data suggest that the accessibility of the sites is a strong negative driver for the presence of Red List tree species. We conclude that protection of the forests of the Cat Ba Island should be stricter to allow the IUCN Red List tree species to grow under more appropriate conditions, which then would allow studying their ecology in more detail. This would further allow deriving more precise recommendations for their future protection.

Liparis popaensis (Orchidaceae), a new species from Myanmar

Phytotaxa ◽  
2019 ◽  
Vol 413 (1) ◽  
pp. 67-70 ◽  
Author(s):  
AYE THIN MU ◽  
YE LWIN AUNG ◽  
XIAOHUA JIN
Keyword(s):  
New Species ◽  
National Park ◽  
Iucn Red List ◽  
Red List ◽  
Identification Key ◽  
Conservation Assessment ◽  
Iucn Red List Categories ◽  
Red List Categories ◽  
A New Species

Liparis popaensis, a new species of Orchidaceae, is described from Popa Mountain National Park, central Myanmar. Liparis popaensis is morphologically similar to L. odorata but it differs from the latter by having oblong-lanceolate dorsal sepal, column with two triangular wings and lip with a pair of subconical and basally adjoining calli at its base. Identification key and colour photographs are provided. A preliminary conservation assessment according to the IUCN Red List Categories and Criteria is given for the new species.

scholarly journals Estimating the global conservation status of more than 15,000 Amazonian tree species

2015 ◽  
Vol 1 (10) ◽  
pp. e1500936 ◽  
Author(s):  
Hans ter Steege ◽  
Nigel C. A. Pitman ◽  
Timothy J. Killeen ◽  
William F. Laurance ◽  
Carlos A. Peres ◽  
...  
Keyword(s):  
Protected Areas ◽  
Tree Species ◽  
Large Scale ◽  
Gap Analysis ◽  
Extinction Risk ◽  
Conservation Status ◽  
Iucn Red List ◽  
Distribution Models ◽  
Threatened Plant Species ◽  
The Tropics

Estimates of extinction risk for Amazonian plant and animal species are rare and not often incorporated into land-use policy and conservation planning. We overlay spatial distribution models with historical and projected deforestation to show that at least 36% and up to 57% of all Amazonian tree species are likely to qualify as globally threatened under International Union for Conservation of Nature (IUCN) Red List criteria. If confirmed, these results would increase the number of threatened plant species on Earth by 22%. We show that the trends observed in Amazonia apply to trees throughout the tropics, and we predict that most of the world’s >40,000 tropical tree species now qualify as globally threatened. A gap analysis suggests that existing Amazonian protected areas and indigenous territories will protect viable populations of most threatened species if these areas suffer no further degradation, highlighting the key roles that protected areas, indigenous peoples, and improved governance can play in preventing large-scale extinctions in the tropics in this century.

scholarly journals Regional Red List assessment of tree species in upper montane forests of the Tropical Andes

Oryx ◽  
2015 ◽  
Vol 49 (3) ◽  
pp. 397-409 ◽  
Author(s):  
Natalia Tejedor Garavito ◽  
Adrian C. Newton ◽  
Sara Oldfield
Keyword(s):  
Tree Species ◽  
Expert Knowledge ◽  
Extinction Risk ◽  
Plant Species Richness ◽  
Iucn Red List ◽  
Red List ◽  
Conservation Strategies ◽  
Tropical Andes ◽  
Conservation Assessment ◽  
Distribution Maps

AbstractThe Tropical Andes are characterized by a high level of endemism and plant species richness but are under pressure from human activities. We present the first regional conservation assessment of upper montane tree species in this region. We identified 3,750 tree species as occurring in this region, of which 917 were excluded because of a lack of data on their distribution. We identified a subset of 129 taxa that were restricted to higher elevations (> 1,500 m) but occurred in more than one country, thus excluding local endemics evaluated in previous national assessments. Distribution maps were created for each of these selected species, and extinction risk was assessed according to the IUCN Red List categories and criteria (version 3.1), drawing on expert knowledge elicited from a regional network of specialists. We assessed one species, Polylepis microphylla, as Critically Endangered, 47 species as Endangered and 28 as Vulnerable. Overall, 60% of the species evaluated were categorized as threatened, or 73% if national endemics are included. It is recommended that extinction risk assessments for tree species be used to inform the development of conservation strategies in the region, to avoid further loss of this important element of biodiversity.

scholarly journals The importance of farmland for the conservation of the brown hyaena Parahyaena brunnea

Oryx ◽  
2013 ◽  
Vol 47 (3) ◽  
pp. 431-440 ◽  
Author(s):  
Vivien T. Kent ◽  
Russell A. Hill
Keyword(s):  
Land Use ◽  
Protected Areas ◽  
Significant Proportion ◽  
Camera Trap ◽  
Iucn Red List ◽  
Red List ◽  
Critical Importance ◽  
Sufficient Space ◽  
Global Population ◽  
Near Threatened

AbstractThe conservation of wide-ranging, territorial carnivores presents many challenges, not least the inadequacy of many protected areas in providing sufficient space to allow such species to maintain viable populations. As a result populations occurring outside protected areas may be of considerable importance for the conservation of some species, although the significance of these areas is poorly understood. Brown hyaenas Parahyaena brunnea are categorized as Near Threatened on the IUCN Red List and recent research suggests the species may be particularly vulnerable to habitat loss and the conversion of land to agriculture. Here we report on the population density and abundance of brown hyaenas in an area of commercial farmland in western Botswana. Mean brown hyaena density estimated from camera-trap surveys was 2.3 per 100 km2 and from spoor surveys 2.88 per 100 km2, which are comparable to estimates reported for protected areas. Estimated densities were higher on farms used for livestock production than on those used for game farming, suggesting that the species can tolerate land-use change where reliable alternative food resources exist. Our results indicate that populations of brown hyaenas in non-protected areas comprise a significant proportion of the global population and that such areas may be of critical importance for their conservation.

scholarly journals Assessing the effectiveness of Madagascar’s changing protected areas system: a case study of threatened Boraginales

Oryx ◽  
2011 ◽  
Vol 45 (2) ◽  
pp. 201-209 ◽  
Author(s):  
James S. Miller ◽  
Holly A. Porter Morgan
Keyword(s):  
Protected Areas ◽  
Protected Area ◽  
Native Species ◽  
Plant Conservation ◽  
Iucn Red List ◽  
Red List ◽  
Iucn Red List Categories ◽  
System A ◽  
Red List Categories

AbstractThreat analyses of the Boraginales were conducted and used to assess the effectiveness of Madagascar’s current and proposed protected area systems in conserving the threatened species of a group of plants widespread in Madagascar. Specimen locality data for 52 species of four families of Boraginales were analysed to provisionally assign species to IUCN Red List categories. Six species were excluded from these global analyses as they are non-native and introduced. IUCN’s criterion B, analysis of geographical range, was found to be the most reliable means of estimating threat, and predicted future decline was found to overestimate threat. Twenty-six of the 46 native species of Boraginales were found to be threatened. Sixty-five percent of these have portions of their ranges in the 2002 protected areas system. When the protected areas system was expanded in 2006 the percentage of species with some protected populations increased to 78%. More than 93% would be protected if a series of proposed priority areas for plant conservation were protected. The implications of these analyses for the conservation of plant species in Madagascar are discussed.

scholarly journals First report of a strict dragon tree species (Dracaena cambodiana: Asparagaceae) from India

2019 ◽  
Vol 13 (1) ◽  
pp. 241-247
Author(s):  
Jatindra Sarma ◽  
Hussain Ahmed Barbhuiya ◽  
Santanu Dey
Keyword(s):  
Tree Species ◽  
Iucn Red List ◽  
Red List ◽  
Closely Related Species ◽  
Iucn Red List Categories ◽  
Dracaena Cambodiana ◽  
Taxonomic Description ◽  
Regional Population ◽  
Red List Categories ◽  
First Time

Dracaena cambodiana Pierre ex Gagnep., a dragon tree species, is reported here for the first time from India. Its taxonomic relationships with other closely related species of genus Dracaena Vand. ex L. are examined and discussed. A detailed taxonomic description, along with color photographs is provided to facilitate its future identification. Recent surveys confirm that the habitat and regional population of the plant is under severe threat. Hence, following IUCN Red List Categories and Criteria, it is regionally categorized as Critically Endangered. 

scholarly journals Assessing worth of marine protected areas for the protection of threatened biodiversity using IUCN Red List and Red List Index. A pilot study in six mediterranean areas

2020 ◽  
Vol 119 ◽  
pp. 106765
Author(s):  
Roberto Crosti ◽  
Antonella Arcangeli ◽  
Silvana Campagnuolo ◽  
Luca Castriota ◽  
Manuela Falautano ◽  
...  
Keyword(s):  
Pilot Study ◽  
Protected Areas ◽  
Marine Protected Areas ◽  
Iucn Red List ◽  
Red List ◽  
Mediterranean Areas

Gravesia serratifolia (Melastomataceae: Sonerileae), a new species from Marojejy National Park, Madagascar

Phytotaxa ◽  
2019 ◽  
Vol 391 (2) ◽  
pp. 115
Author(s):  
FRANK ALMEDA ◽  
HERITIANA RANARIVELO
Keyword(s):  
New Species ◽  
National Park ◽  
Iucn Red List ◽  
Red List ◽  
Similar Species ◽  
Conservation Assessment ◽  
Iucn Red List Categories ◽  
Red List Categories ◽  
A New Species

Gravesia serratifolia, a new species from upper elevations of Marojejy National Park in northeastern Madagascar, is herein described, illustrated, mapped, and compared with similar species. It is readily characterized by its sparingly branched habit, leaf blades coarsely serrate with a moderate to sparse lepidote indumentum on both surfaces, inflorescence of few-flowered dichasia, calyx obsolete or evident as depressed truncate undulations with prominent calyx teeth that are laterally compressed when fresh, filaments with rusty-brown glandlike indumentum, and dorso-basal staminal appendages linear-oblong and widely spreading to coiled. A conservation assessment of Vulnerable is recommended for this species based on IUCN Red List Categories and Criteria.

scholarly journals Conservation status and recovery of Podocarpus angustifolius: a threatened tree of Cuba

Oryx ◽  
2021 ◽  
pp. 1-3
Author(s):  
Ernesto Testé ◽  
Majela Hernández ◽  
Eldis R. Bécquer ◽  
Oliver Valle ◽  
Luis R. González-Torres
Keyword(s):  
Protected Areas ◽  
Size Structure ◽  
Conservation Status ◽  
Population Based ◽  
Iucn Red List ◽  
Small Population ◽  
Red List ◽  
Coffee Plantations ◽  
Area Of Occupancy ◽  
In The Wild

Abstract The recovery of species’ populations is one of the most challenging tasks in conservation, which is why species recovery is most likely to be successful if it involves as many stakeholders as possible. Podocarpus angustifolius, a tree endemic to Cuba, is potentially threatened by overexploitation, deforestation and expansion of exotic species. In December of 2017, in two protected areas containing the only known subpopulations of this species, we recorded the geographical position, height, and diameter at breast height of each individual, and calculated the extent of occurrence (EOO) and area of occupancy (AOO). We recorded a total of 575 individuals, 174 of which were adult (defined as ≥ 6 m height on the basis of the occurrence of reproductive structures), and most of which occurred in Lomas de Banao Ecological Reserve. The EOO and AOO were 125.8 km2 and 6.0 km2, respectively. All P. angustifolius that remain in the wild are within two protected areas, either in rainforest relicts or in coffee plantations. The size structure indicates a growing population. Based on our findings we recommend that P. angustifolius should be recategorized from Vulnerable (on the IUCN Red List) and Critically Endangered (on the national Red List) to Endangered, based on criterion D (small population size). We recommend the continued reinforcement of the population at Topes de Collantes Natural Protected Landscape and the continued engagement of local stakeholders for the long-term conservation of this species.

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