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Floristic composition,growth temperament and conservation status of woody plant species in the Cameroonian tropical rainforests

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Ecological Processes 2022年第1期11卷 694-710页

作者： Olivier Clovis Kengne Samuel Severin Kenfack Feukeng Eric Tchatchouang Ngansop Raissa Gwladys Daghela Meyan‑ya Louis Zapfack Department of Life and Earth Sciences Higher Teachers’Training CollegeUniversity of MarouaP.O.Box 55MarouaCameroon Department of Plant Biology University of DschangP.O.Box 67DschangCameroon Institute of Agricultural Research for Development(IRAD) National Herbarium of CameroonP.O.Box 1601YaoundéCameroon Department of Plant Biology University of YaoundéIP.O.Box 812YaoundéCameroon

Introduction:Cameroon’s tropical rainforests are nowadays strewn with rural forests maintained by local popula‑tions;however,these forests are not officially recognized in the non‑permanent forest *** forests are non‑delimited riparian areas within the dense moist forest,reserved for rural housing,agricultural activities and agroforestry practices,freely exploited by the local communities for their livelihood without them having any rights to artisanal and commercial *** study aimed at contributing to the flora knowledge and the conservation state of woody plant species in *** study was carried out in two rural forests located in the Eastern and Southern agroforestry zones of ***:The method adopted for floristic inventories combined a fixed area sampling unit and a variable area sampling *** individuals with diameter at breast height(dbh)<3.2 cm were counted and shrubs of 3.2≤dbh<10 cm were measured to analyse the understorey,while trees with dbh≥10 cm were measured and identified to characterize the ***:In the Essiengbot‑Mbankoho rural forest in Eastern Cameroon,468 species belonging to 61 families were recorded in the understory while 227 species belonging to 53 families were identified at the canopy level.A total of 40(7.68%)threatened species,18(3.45%)Near Threatened species and 408(78.31%)Least Concern species were *** the Nbgwassa‑Opkweng rural forest in Southern Cameroon,534 species belonging to 64 families were identified in the understory while 225 species belonging to 43 families were recorded in the canopy.A total of 54(9.69%)threatened species,25(4.49%)Near Threatened species and 421(75.58%)Least Concern species were identified in this ***’s diversity indices were above five in the understories and canopies of both ***‑bearer species were the most represented in the understories while the non‑pioneer light‑demanding and shade‑bearer species were the most abundant in

关键词： Floristic composition Rural forest Growth temperament Understory Canopy conservation status

Assessment of Diversity, Distribution, conservation status and Preparation of Management Plan for Medicinal Plants in the Catchment Area of Parbati Hydroelectric Project Stage-Ⅲ in Northwestern Himalaya

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Journal of Mountain Science 2007年第1期4卷 34-56页

作者： S.S. Samant Jitendra S. Butola Aman Sharma G.B. Pant Institute of Himalayan Environment and Development Himachal Unit

The developmental activities, particularly the construction of hydroelectric projects are causing a great loss of biodiversity in the Indian Himalayan Region. The Himaehal Pradesh, a part of IHR is well known for the development of hydroelectric projects. The Parbati H.E. Project is amongst the major projects of the State. The different stages of the project are all causing loss of biodiversity of the area. Stage Ⅲ of the Parbati H.E. Project is a run of the river scheme on the Sainj River downstream of Power House of Parbati H.E. Project Stage Ⅱ. The project shall utilize regulated discharge of Parbati H.E. Project Stage Ⅱ and inflow of River Sainj for power generation, and has been contemplated as a peaking station operating in tandem with Stage Ⅱ. The present study has been undertaken to see the impact of hydroelectric project on the biodiversity, particularly on medicinal plants. A total of 104 species of medicinal plants, belonging to different life forms, i.e., trees （23 spp.）, shrubs （22 spp.）, herbs （57 spp.） and ferns （2 spp.） were recorded. The species have been analyzed and studied for their distribution, classification, altitudinal zones, part （s） used, indigenous uses, nativity, endemism and *** parts of these species, such as whole plants, roots （including rhizomes and tubers）, leaves, flowers, fruits, seeds, stems, barks, spikes, nuts and insect galls are used by the inhabitants for curing various diseases and ailments. 3o species are native to the Himalayan region, 9 species native to the Himalayan region and adjacent countries also and 65 species are non-natives. 9 species are near endemics. Considering the whole Himalaya as a biogeographie unit （sensu lato）, the near endemics are endemic to the Himalaya. Among these species, Zanthoxylum armature is categorized as Endangered and Valeriana wallichii as Vulnerable. Hedychium spicatum, Rhus javanica, Berberis lycium, Thalictrum foliolossum, Salvia lanata, Rubia cordifolia and Bergenia ligu

关键词： Hydroelectric project dam submergence area management plan medicinal plant diversity native endemic endangered conservation status indigenous uses Indian Himalaya

Floristic Diversity and conservation status of Guineo-Congolese Species in Southeastern Cameroon: The Case of the Gari-Gombo Communal Forest

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Open Journal of Forestry 2024年第1期14卷 87-97页

作者： Boris Nyeck Valery Noiha Noumi Nicole Maffo Maffo Victor Awe Djongmo Cedric Djomo Chimi Louis Zapfack Department of Biological Sciences Faculty of Sciences University of Ngaoundéré Ngaoundéré Cameroon Agricultural Research Institute for Development (IRAD) Minko Agricultural Research Station Meyomessala Cameroon Department of live Sciences Higher Teacher Training College University of Bertoua Bertoua Cameroon Department of Plant Biology and Physiology Faculty of Sciences University of Yaoundé I Yaoundé Cameroon Agricultural Research Institute for Development (IRAD) Research Station of Yokadouma Yokadouma Cameroon

The conservation of plant biodiversity has become one of the most important objectives in the sustainable management of Guinean-Congolese ecosystems. However, in the south-east zone of Cameroon, there is a lack of rigor in the management of these forests, which can result in the loss of species of high conservation value. The study was carried out in communal forests in the south-east zone of Cameroon. Its aim was to carry out a floristic inventory and then compare the list of species with the IUCN catalog. Twenty-four plots, each with a surface area of 0.2 ha, were set up in the Gari-Gombo communal forest. All timbers with a DBH ≥ 5 cm were systematically counted. A total of 176 species, belonging to 144 genera and 45 families, were surveyed. Fabaceae (42.08%), Malvaceae (39%), Euphorbiaceae (24.64%), Moraceae (20.92%), Apocynaceae (18.64%), Cecropiaceae (16.60%), Ulmaceae (14.76%), Meliaceae (14.61%), Violaceae (14.08%), Combretaceae (12.67%), Theobroma cacao (21.17%), Baphia leptobotrys (18.06%), Rinorea sp. (14.09%), Musanga cecropioides (12.18%), Terminalia superba (10.32%), Neosloetiopsis kamerunensis (10.14%), Celtis zenkeri (8.29%) and Alstonia boonei (7.77%) were the most important taxa. Nearly 90% of the species in this forest are Guinean species, with a dominance of Guinean-Congolese species (66%). Fourteen (14) threatened species have been identified in the FCGG. This study, which highlights the rich biodiversity of communal forests, is important for guiding biodiversity conservation policies in ecosystems used for production.

关键词： Communal Forest conservation status Cameroon Floristic Diversity

Booted Eagle Hieraaetus pennatus(***,1788)in Armenia:Update on conservation status

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Journal of Life Sciences 2020年第1期14卷 14-21页

作者： Karen Aghababyan Hovik Stepanyan TSE towards Sustainable Ecosystems NGO 87b DimitrovApt 14Yerevan0020Armenia

The monitoring of the Booted Eagles Hieraaetus pennatus in Armenia,conducted during 2003-2019 shows that the species breeds in northern,north-eastern,central,southern,and south-eastern regions,inhabiting various deciduous and mixed woodlands at elevation range 1,200-2,300 m above sea *** area of occupancy makes 5,110 *** to the last estimation,there are 48-72 breeding pairs of Booted Eagles in the *** population trend during 2003-2019 demonstrates stability(p>0.05,n=21).Among 24 cases of three nests observed during 2011-2018,in 20 cases(83%)the nest consisted of two hatchlings,however in 11 nests out of those 20(55%)the older and stronger nestling was killing the younger and weaker *** average breeding success makes 1.33±0.28 fledglings per occupied *** questioning of hunters shows that poaching can be a threat for the species due to low level of education of local *** present conservation measures are not *** conservation status of the species should remain the same:Vulnerable D1,but the proposed conservation measures should include:(1)nation-wide educational program on raptors;(2)increase of punishments for illegal hunting and trapping of the species;(3)setting up a state exam for the hunters to check their knowledge;(4)strengthening of Inspectorate for Nature Protection and Mineral Resources;(5)assisting farmers and pigeon breeders to improve facilities for protection of domestic *** continuous monitoring of the species remains essential to track its further population trend,and to indicate the efficiency of undertaken conservation measures.

关键词： Booted Eagle Hieraaetus pennatus Armenia conservation status population dynamics threats

Population and conservation status of the Himalayan Griffon(Gyps himalayensis) at the Drigung Thel Monastery,Tibet,China

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Chinese Birds 2013年第4期4卷 328-331页

作者：刘超霍志萍于晓平陕西师范大学生命科学学院西安710062

The Himalayan Griffon(Gyps himalayensis), occurring mainly in the Tibetan Plateau, is one of the scavengers of Old World vultures. As of now, knowledge about the Himalayan Griffon in China remains scarce. Estimates of its number, habitat, and conservation status were carried out in 2003, 2009 and 2102 in the Lhasa River Valley, where we paid particular attention to the population living at the Drigung Thel Monastery, Mzizhokunggar County. The resident species occupies alpine meadows in the daytime and roosts at the upper parts of cliffs at night between 4400–5000 m elevation. The number of individual birds of the Himalayan Griffon around the monastery was estimated as 230 in 2003, 250 in 2009 and 200 in 2012. This population is considered relatively stable, thanks to the current conservation measures by Buddhist monks and local people. Given the lack of any baseline information, it is difficult for us to recommend and provide any effective conservation measures.

关键词： Himalayan Griffon habitat population conservation status

Plant diversity in Yunnan:Current status and future directions

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Plant Diversity 2020年第4期42卷 281-291页

作者： Li-Shen Qian Jia-Hui Chen Tao Deng Hang Sun CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming650201China University of Chinese Academy of Sciences Beijing100049China School of Life Science Yunnan UniversityKunming650091China

Yunnan,located in southwestern China,harbors more than 19,000 higher plants,which represents the highest plant diversity in the ***,plant diversity in Yunnan faces enormous threats today,including habitat destruction and fragmentation,environmental pollution,and over-exploitation of natural *** recent efforts to protect biodiversity,there are still thousands of threatened species,some of which have become *** analyzed available data to gain a greater understanding of plant diversity and the status of plant conservation in *** found that southern,southeastern,and northwestern Yunnan are hotspots of total species,endemic species,specimens,new species and threatened species,whereas southeastern Yunnan is a hotspot for plant species with extremely small ***,we found that there are still conservation gaps and poorly protected areas in central,eastern,and northeastern *** conclude that conservation of plant diversity in Yunnan requires modern field investigation,systematic research,the development of comprehensive databases,and government *** recommend that conservationists pay more attention to building and improving functional protection systems and popularizing science.

关键词： Biodiversity conservation status Protection Yunnan Province Hotspot

Migration routes,population status and important sites used by the globally threatened Black-faced Spoonbill(Platalea minor):a synthesis of surveys and tracking studies

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Avian Research 2021年第4期12卷 425-441页

作者： Yiwen Chen Yat-tung Yu Fanjuan Meng Xueqin Deng Lei Cao Anthony David Fox School of Life Sciences University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of Sci-encesBeijing 100085China Hong Kong Bird Watching Society Hong Kong SARChina University of Chinese Academy of Sciences Beijing 100049China Department of Bioscience Aarhus UniversityKaløGrenåvej 148410 RøndeDenmark.

Background:The Black-faced Spoonbill(Platalea minor)is a globally threatened species,nesting mainly in western Korea with smaller numbers breeding in Liaoning Province,China,and Far East *** winter field surveys to estimate the species'population size were almost totally conducted in coastal areas,but tracking studies showed that some individuals now winter *** ensure its long-term survival,we need a more comprehensive assessment of the current distribution and abundance of the ***:We combined the most recent count data and satellite tracking information to update existing informa-tion about the population abundance and distribution of the Black-faced Spoonbill at all stages of its annual life cycle,and how these have changed during ***:Black-faced Spoonbills mainly breed on the west coast of the Korean peninsula,while immature birds show a wider summer distribution throughout Yellow Sea coastal areas,when a few remain on wintering sites in the *** tracking results and mid-winter counts confirmed known wintering sites on the east and south coasts of China,but showed that the species also winters on wetlands in the Yangtze River floodplain and in Southeast *** 2004-2020,counts of wintering birds in coastal habitats increased from 1198 to 4864,with numbers wintering on the island of Taiwan contributing most to the overall *** counts found 5222 in *** also identify key wintering and stopover sites as well as their current conservation ***:This study revised the known summering and wintering ranges of the Black-faced Spoonbill and assessed the conservation status of key sites based on a combination of field survey and satellite tracking *** recommend prioritisation of further field research to identify and survey inland wintering areas in the Yangtze River floodplain and summering areas of immature *** tracking of adult individuals and birds during spring migration is

关键词： Black-faced Spoonbill Breeding distribution Coastal mudflats conservation status Platalea minor Population abundance Winter distribution Yangtze River floodplain

Natural regeneration in logging gaps of different sizes in Subri River Forest Reserve(Ghana)

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Journal of Forestry Research 2022年第4期33卷 1157-1174页

作者： Maame Esi Hammond Radek Pokorný Simon Abugre Augustine Gyedu Department of Silviculture Faculty of Forestry and Wood TechnologyMendel University in BrnoZemědělská361300 BrnoCzech Republic Department of Forest Science School of Natural ResourcesUniversity of Energy and Natural ResourcesP.O.Box 214SunyaniGhana Forest Services Division(FSD) P.M.BKumasiGhana

Subri River Forest Reserve(SR)is the most extensive forest area in Ghana with an accompanying rich floral *** the years,logging from both legally prescribed and illegal operations remain the predominant forest disturbance in *** creation following logging is crucial in determining tree species composition and ***,the study evaluated the composition and diversity of naturally regenerated tree species in logging gaps of different sizes and,again examined the roles of these tree species in fulfilling the economic and ecological agenda of sustainable forest management after logging in *** gaps were randomly selected:4 each were grouped into small size(≤200 m^(2)),medium size(201–300 m^(2)),and large size(≥300 m^(2)).Data were gathered from 1 m^(2) circular area at gap centres and repeatedly inside 1 m width strip along 20 m individual N-S-E-W *** diversity differed significantly between gap *** diversity indices were measured in large size *** sizes shared similar *** were significant differences among various height groupings of tree species across all three gap *** preferred medium to large size gaps,while shadetolerant tree species preferred small size gaps for their *** and Lower Risk Near Threatened tree species under conservation status and,Premium and Commercial tree species under Utilisation status preferred small size gaps for their proliferation and ***,we recommend the single tree-based selective logging for ensuring creations of small to medium size(200–300 m^(2))gaps through adjustments to the logging permit process,revision of Allocation Quota Permit,strict adherence to the 40-year polycyclic selection system,along with more dedicated enforcement and *** along these protocols would tremendously facilitate natural regeneration of different suites of timber species resulting in the improvement of the overall biodiversity conservat

关键词： conservation status Gap size Diversity Logging Natural regeneration Subri River Forest Reserve Tree species Utilisation status

Taxonomic bias in occurrence information of angiosperm species in China

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Science China(Life Sciences) 2021年第4期64卷 584-592页

作者： Wenjing Yang Dandan Liu Qinghui You Bin Chen Minfei Jian Qiwu Hu Mingyang Cong Keping Ma Key Laboratory of Poyang Lake Weland and Watershed Research(Jiangxi Normal Universiy) Minisiry of EducationNanchang 330022 China School of Geography and Environmen Jiangxi Normal UniversiyNanchang 33002China School of Life Sciences Jiangxi Normal UntiversityNanchang 330022 China Department of Informaion Technolog Shanghai Chenshan Botanical GardenShanghai 201602China Analytical&Testing Center Jiangxi Normal UniversiyNanchang 30022 China State Key Laboratory of Vegetation and Envirnmental Change Institute of BotamyChinese Academy of SciencesBejjing 100093China

Taxonomic bias is a well-known shortcoming of species occurrence *** the causes of taxonomic bias facilitates future biological surveys and addresses current knowledge ***,we investigate the main drivers of taxonomic bias in occurrence data of angiosperm species in *** used a database including 5,936,768 records for 28,968 angiosperm species derived from herbarium specimens and literature *** additive models(GAMs)were applied to investigate explanatory powers of 17 variables on the variation in record numbers of *** explanatory variables were selected for a multi-predictor GAM that explained 69%of the variation in record numbers:plant height,range size,elevational range,numbers of scientific publications and web *** size was the most important predictor in the model and positively correlated with number of *** and phenological traits and social-economic factors including economic values and conservation status had weak explanatory powers on record numbers of plant species,which differs from the findings in animals,suggesting that causes of taxonomic bias in occurrence databases may vary between taxonomic *** results suggest that future floristic surveys in China should more focus on range-restricted and socially or scientifically less"interesting"species.

关键词： biodiversity databases conservation status economic values flowering plants narrow-ranging species specimen collection survey effort taxonomic bias