scholarly journals Inventory of threatened plants of Bangladesh and their conservation management

2014 ◽  
Vol 3 (1) ◽  
pp. 141-167 ◽  
Author(s):  
M Harun-ur-Rashid ◽  
M Enamur Rashid ◽  
M Atiqur Rahman
Keyword(s):  
Conservation Management ◽  
Conservation Status ◽  
Field Investigation ◽  
Conservation Strategies ◽  
Herbarium Specimens ◽  
Environmental Threats ◽  
Threatened Plant Species ◽  
Threatened Taxa ◽  
Data Book ◽  
Sustainable Conservation

The study aimed at inventorying of threatened plant species of Bangladesh to determine their status of occurrence for emphasizing the setting-up of national conservation strategies and sustainable management. Complete inventory of two families, the Apocynaceae and Vitaceae, has been made and recognized 28 threatened species facing environmental threats, and need sustainable conservation management. The study was based on long-term field investigation, survey of relevant floristic literature and examination of herbarium specimens. An enumeration of threatened taxa is prepared with updated field data on conservation status to include into Red Data Book of Bangladesh. DOI: http://dx.doi.org/10.3126/ije.v3i1.9951 International Journal of Environment Vol.3(1) 2014: 141-167

scholarly journals Plant taxonomy and biodiversity researches in Bangladesh: trends and opportunities

2014 ◽  
Vol 3 (2) ◽  
pp. 324-344
Author(s):  
M Atiqur Rahman
Keyword(s):  
Environmental Management ◽  
New Taxa ◽  
Slow Rate ◽  
Conservation Management ◽  
Conservation Strategies ◽  
Floristic Diversity ◽  
Plant Taxonomy ◽  
Red Data Book ◽  
Threatened Taxa ◽  
Data Book

The progress, problems and prospects of biodiversity and plant taxonomic researches conducted in Bangladesh during the last two decades have been analyzed. The inventory of the flora, threatened taxa and family wise itemization in all groups of plants are progressing at a very slow rate. Only 11.6% of the estimated species (c.5000) were inventoried and only 6.2% of the threatened taxa were listed for conservation management. National Conservation Strategies could not be framed and implemented duly for environmental management. Results of the survey of floristic diversity, inventory of threatened taxa for Red Data Book and discovery of new taxa are discussed and up to date data are presented. DOI: http://dx.doi.org/10.3126/ije.v3i2.10645 International Journal of the Environment Vol.3(2) 2014: 324-344

scholarly journals Possibly lost orchid treasure of Bangladesh and their enumeration with conservation status

2018 ◽  
Vol 3 (1) ◽  
pp. 65-84
Author(s):  
ME Rashid ◽  
MA Rahman ◽  
MK Huda
Keyword(s):  
Conservation Management ◽  
Conservation Status ◽  
Field Investigation ◽  
Conservation Strategy ◽  
Herbarium Specimens ◽  
Orchid Species ◽  
Field Investigations ◽  
The Status ◽  
Term Field

The study aimed at determining the status of occurrence of the orchid treasure of Bangladesh for providing data for Planning National Conservation Strategy and Development of Conservation Management. 54 orchid species are assessed to be presumably lost from the flora of Bangladesh due to environmental degradation and ecosystem depletion. The assessment of their status of occurrence was made based on long term field investigation, collection and identification of orchid taxa; examination and identification of herbarium specimens preserved at CAL, E, K, DACB, DUSH, BFRIH,BCSIRH, HCU; and survey of relevant upto date floristic literature. These species had been recorded from the present Bangladesh territory for more than 50 to 100 years ago, since then no further report of occurrence or collection from elsewhere in Bangladesh is available and could not be located to their recorded localities through field investigations. Of these, 29 species were epiphytic in nature and 25 terrestrial. More than 41% of these taxa are economically very important for their potential medicinal and ornamental values. Enumeration of these orchid taxa is provided with updated nomenclature, bangla name(s) and short annotation with data on habitats, phenology, potential values, recorded locality, global distribution conservation status and list of specimens available in different herbaria.J. Biodivers. Conserv. Bioresour. Manag. 2017, 3(1): 65-84

scholarly journals Co-occurring cryptic species pose challenges for conservation: a case study of the African dwarf crocodile (Osteolaemusspp.) in Cameroon

Oryx ◽  
2014 ◽  
Vol 49 (4) ◽  
pp. 584-590 ◽  
Author(s):  
Nicole L. Smolensky
Keyword(s):  
Cryptic Species ◽  
Conservation Status ◽  
Taxonomic Revision ◽  
Single Species ◽  
Conservation Strategies ◽  
Encounter Rates ◽  
Distribution Maps ◽  
Species Complexes ◽  
Threatened Taxa ◽  
Population Structures

AbstractThe conservation status of threatened taxa may be obfuscated by the detection of cryptic species complexes, in both vertebrate and invertebrate species. African dwarf crocodiles (Osteolaemusspp.) are hunted throughout their range but their conservation status is unknown. Few population assessments have been carried out and there has been a taxonomic revision of the number of species in the genus. The similar morphologies ofOsteolaemus tetraspisandOsteolaemus osbornipose a challenge for conservation in Cameroon, where they are still managed as a single species. Nocturnal spotlight surveys were conducted in three regions during August–November 2010 and December 2011–February 2012 to provide population assessments ofO. tetraspisandO. osborniand raise awareness of the two species in Cameroon. The mean encounter rates ofO. tetraspisandO. osborniwere 1.02 ± SD 1.34 (65 individuals in 39 surveys) and 0.61 ± SD 0.38 (three in four surveys) crocodiles per km, respectively. TheO. tetraspispopulation comprised juveniles predominantly and had a male-biased sex ratio. The fewO. osbornidetected comprised both adults and juveniles. Both species are threatened in Cameroon, based on low encounter rates, young population structures and the threats of habitat loss and hunting pressure. This study provides distribution maps and serves as a baseline to quantify population trends and inform conservation strategies.

Ethnomedicinal Importance of Rudraksha (Elaeocarpus sphaericus (Gaertn.) K. Schum.), Related Species and their Conservation Strategies: A Review

2015 ◽  
Vol 38 (1) ◽  
pp. 1-10
Author(s):  
Kumud Saklani ◽  
P. Prasad ◽  
Anant Nautiyal
Keyword(s):  
Related Species ◽  
Conservation Status ◽  
Iucn Red List ◽  
Red List ◽  
Present Review ◽  
Conservation Strategies ◽  
Threatened Plants ◽  
Red Data Book ◽  
Data Book ◽  
Economic Use

The extensive use of Elaeocarpus species in Ayurveda or as ethnomedicinal plants and their economic use as timber plants, have resulted in most of them getting threatened and enlisted in the Red Data Book or the IUCN Red List of threatened plants. The present review focuses on the conservation status of important Elaeocarpus species of India in view of their medicinal importance and the efforts required, thereof, in future.

scholarly journals Taxonomy of a monotypic genus Indopiptadenia  (Leguminosae-Mimosoideae)

Phytotaxa ◽  
2014 ◽  
Vol 164 (2) ◽  
pp. 61 ◽  
Author(s):  
Omesh Bajpai ◽  
Awadhesh Kumar Srivastava ◽  
Arun Kumar Kushwaha ◽  
Lal Babu Chaudhary
Keyword(s):  
Field Survey ◽  
Conservation Status ◽  
Systematic Position ◽  
Conservation Strategies ◽  
Full Description ◽  
Herbarium Specimens ◽  
Monotypic Genus ◽  
Morphological Variations ◽  
Himalayan Foothills ◽  
Near Threatened

Indopiptadenia, a monospecific genus with the species I. oudhensis, is confined to the Indo-Nepal border area in scattered populations along the Himalayan foothills between 156–908 m elevation. I. oudhensis has been little studied since its discovery in 1874. The taxonomy of the genus is reexamined here with extensive notes on diversity, distribution, phenology, ecology and conservation status based on exhaustive field survey and examination of herbarium specimens. A full description including data on many new characters and encompassing all morphological variations is provided to better characterize the species so that its correct systematic position can be ascertained and provide the basis for proper conservation strategies. Placed in the tribe Mimoseae, the species shows more affinity towards the Newtonia group than the Piptadenia group. However, it differs from the former in having unarmed to armed stem, uni- or bijugate leaflets, absence of stemonozone and pods that dehisce generally by rupturing of the pod valves over the seed chambers to leave a persistent replum. The IUCN category Near Threatened (NT) is assigned to the taxon.

Taxonomic revision of the genus Massularia (Rubiaceae, Gardenieae), with a new species from Central Africa

Phytotaxa ◽  
2015 ◽  
Vol 203 (3) ◽  
pp. 263
Author(s):  
Bonaventure Sonké ◽  
Ehoarn Bidault ◽  
Vincent Droissart
Keyword(s):  
New Species ◽  
Central African Republic ◽  
Conservation Status ◽  
Field Investigation ◽  
Careful Examination ◽  
Morphological Description ◽  
Herbarium Specimens ◽  
Distribution Maps ◽  
Status Assessment ◽  
A New Species

Based on a careful examination of more than 700 herbarium specimens and field investigation, a comprehensive revision of the genus Massularia is given. Massularia stevartiana, a new species from Central African Republic, Cameroon and Gabon is described and illustrated. The novelty is distinguished from M. acuminata, the only other species previously recognized in the genus, by its smaller leaves and flowers. For the two species recognized we provide a morphological description, distribution, habitat, phenology and IUCN conservation status assessment. Distribution maps and a dichotomous key are also provided.Based on a careful examination of more than 700 herbarium specimens and field investigation, a comprehensive revision of the genus Massularia is given. Massularia stevartiana, a new Rubiaceae species from Central African Republic, Cameroon and Gabon is described and illustrated. The novelty is distinguished from M. acuminata, the only other species recognized within the genus, by its smaller leaves and flowers. Another typical character for M. stevartiana is its leaves always cunate. For the two recognized taxa we provide a morphological description, distribution, habitat, phenology and IUCN conservation status assessment. Distribution maps and a taxonomic key are also provided.

scholarly journals Notes on the threatened lowland forests of Mt Cameroon and their endemics including Drypetes burnleyae sp. nov., with a key to species of Drypetes sect. Stipulares (Putranjivaceae)

Kew Bulletin ◽  
2021 ◽  
Author(s):  
Martin Cheek ◽  
Nouhou Ndam ◽  
Andrew Budden
Keyword(s):  
Conservation Management ◽  
Conservation Status ◽  
Central Africa ◽  
Habitat Destruction ◽  
Coastal Forests ◽  
Key To Species ◽  
International Union ◽  
Species Discovery ◽  
Mount Cameroon ◽  
Lowland Forests

SummaryThis paper reports a further discovery of a new endemic threatened species to science in the context of botanical surveys in the lowland coastal forests of Mount Cameroon in the Cross River-Sanaga interval of west-central Africa. These studies now focus on species discovery and conservation through the Tropical Important Plant Areas programme. New species to science continue to be discovered from Mt Cameroon. Most of these species are rare, highly localised, and threatened by habitat destruction, increasing the justification for improved conservation management of surviving habitat. Drypetes burnleyae is placed in and keyed out in Drypetes sect. Stipulares, a group mostly confined to Lower Guinea, here adjusted to accommodate nine species. The conservation status of Drypetes burnleyae is assessed as Endangered (EN B1+2ab(iii)) according to the 2012 criteria of the International Union for the Conservation of Nature. An updated overview of the plant endemics of Mt Cameroon is presented.

Are listed threatened plant species actually at risk?

2002 ◽  
Vol 50 (1) ◽  
pp. 1 ◽  
Author(s):  
Mark A. Burgman
Keyword(s):  
Plant Species ◽  
Threatened Species ◽  
Feedback Loop ◽  
Conservation Status ◽  
The State ◽  
Scarce Resources ◽  
Threatened Plant ◽  
Threatened Plant Species ◽  
Legal Mandates ◽  
State Of The Environment

Despite the fact that the most changes in lists of threatened species reflect changes in knowledge rather than changes in conservation status, the lists continue to provide social and legal mandates for conservation; they are used to report on the state of the environment and to guide the allocation of scarce resources. There is a substantial under-representation of non-vascular species in threatened plant lists, reflected in an absence of documented extinctions among fungi and algae. Turnover in the composition of extinct flora lists in Australia suggests that the lists of threatened species may not be sufficiently reliable to form the basis for reporting on the state of the environment. They are of limited use in distinguishing between levels of threat and may not be a reliable guide for the allocation of scarce conservation resources among plant species. Systems for listing threatened species create a feedback loop, responsive to the subjective preferences of scientists, largely unresponsive to underlying true threats, self-perpetuating and accentuating bias with each iteration. Other tools, including formal decision approaches and the acquisition of new kinds of data, are needed to fill the roles.

scholarly journals Update of distribution, habitats, population size, and threat factors for the West African crocodile in Mauritania

2016 ◽  
Vol 37 (3) ◽  
pp. 325-330 ◽  
Author(s):  
João Carlos Campos ◽  
Fernando Martínez-Freiría ◽  
Fábio Vieira Sousa ◽  
Frederico Santarém ◽  
José Carlos Brito
Keyword(s):  
Population Size ◽  
Conservation Status ◽  
West African ◽  
Conservation Strategies ◽  
Temperature Extremes ◽  
Local Conservation ◽  
The West ◽  
Water Abstraction ◽  
New Localities ◽  
Domestic Use

The West African crocodile (Crocodylus suchus) is an emblematic species from the Sahara-Sahel with scarce knowledge on distribution and conservation status. This study updated the knowledge on distribution, occupied habitats, population size, and factors that threaten C. suchus and its habitats in Mauritania. Five field expeditions to Mauritania (2011-2016), allowed the detection of 26 new localities, increasing by 27% the current number of all known locations (adding up to ). In most localities less than five individuals were observed, and in all visiting sites the number of observed individuals ranged from one to 23. Eleven threat factors were identified, being droughts and temperature extremes (100% localities affected) and water abstraction for domestic use and nomadic grazing (94%) the most frequent. These findings suggest that crocodiles are apparently vulnerable in Mauritania and that future local conservation strategies are needed to assure the continuity of its fragile populations and preserve their habitats.

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)

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