The risk of extinction resulting from disease caused by Phytophthora cinnamomi to endangered, vulnerable or rare plant species endemic to the Grampians, Western Victoria

2004 ◽  
Vol 52 (3) ◽  
pp. 425 ◽  
Author(s):  
Noushka Reiter ◽  
Gretna Weste ◽  
David Guest
Keyword(s):  
Plant Species ◽  
Phytophthora Cinnamomi ◽  
Risk Measures ◽  
Field Surveys ◽  
Extensive Field ◽  
Disease Aetiology ◽  
Risk Of Extinction ◽  
Pot Trials ◽  
Western Victoria ◽  
Not At Risk

Seven rare, vulnerable or endangered plant species endemic to the Grampians Ranges (Gariwerd) in Victoria were tested for their susceptibility to Phytophthora cinnamomi Rands. Existing habitats were checked for infestations of P. cinnamomi. Plants were grown from cuttings collected either from nurseries or from the Grampians National Park. Symptoms on inoculated plants and measurements of shoot growth and vigour were recorded weekly. Dry biomass was recorded at the end of the experiment and the pathogen was re-isolated from inoculated plants to confirm disease aetiology. Results from pot trials were correlated with the results from extensive field surveys for each species in its habitat to assess the risk posed by P. cinnamomi to each species' existence in the wild.The pot trials and field observations revealed that the risk of extinction from infection caused by P. cinnamomi was high for Pimelea pagophila and Pultenaea subalpina (both highly susceptible and inhabiting infested sites) as well as for Asterolasia phebalioides seedlings and Borya mirabilis (both moderately susceptible and inhabiting infested sites). The risk from P. cinnamomi was medium for Sphaerolobium acanthos (susceptible) and low for Grevillea microstegia (slightly susceptible). Hibbertia humifusa subsp. humifusa (field resistant) was not at risk. Measures to protect the susceptible species have been investigated and are discussed.

scholarly journals New tools for old problems — comparing drone- and field-based assessments of a problematic plant species

2021 ◽  
Vol 193 (2) ◽  
Author(s):  
Jens Oldeland ◽  
Rasmus Revermann ◽  
Jona Luther-Mosebach ◽  
Tillmann Buttschardt ◽  
Jan R. K. Lehmann
Keyword(s):  
Image Analysis ◽  
Plant Species ◽  
Just In Time ◽  
Post Processing ◽  
Tall Grass ◽  
Field Surveys ◽  
Distribution Maps ◽  
Object Based Image Analysis ◽  
Object Based ◽  
Before And After

AbstractPlant species that negatively affect their environment by encroachment require constant management and monitoring through field surveys. Drones have been suggested to support field surveyors allowing more accurate mapping with just-in-time aerial imagery. Furthermore, object-based image analysis tools could increase the accuracy of species maps. However, only few studies compare species distribution maps resulting from traditional field surveys and object-based image analysis using drone imagery. We acquired drone imagery for a saltmarsh area (18 ha) on the Hallig Nordstrandischmoor (Germany) with patches of Elymus athericus, a tall grass which encroaches higher parts of saltmarshes. A field survey was conducted afterwards using the drone orthoimagery as a baseline. We used object-based image analysis (OBIA) to segment CIR imagery into polygons which were classified into eight land cover classes. Finally, we compared polygons of the field-based and OBIA-based maps visually and for location, area, and overlap before and after post-processing. OBIA-based classification yielded good results (kappa = 0.937) and agreed in general with the field-based maps (field = 6.29 ha, drone = 6.22 ha with E. athericus dominance). Post-processing revealed 0.31 ha of misclassified polygons, which were often related to water runnels or shadows, leaving 5.91 ha of E. athericus cover. Overlap of both polygon maps was only 70% resulting from many small patches identified where E. athericus was absent. In sum, drones can greatly support field surveys in monitoring of plant species by allowing for accurate species maps and just-in-time captured very-high-resolution imagery.

Distribution of the southern brown bandicoot (Isoodon obesulus) in the Portland region of south-western Victoria

2000 ◽  
Vol 27 (5) ◽  
pp. 539 ◽  
Author(s):  
Michael Rees ◽  
David Paull
Keyword(s):  
Local Population ◽  
Historical Records ◽  
Limited Information ◽  
Field Surveys ◽  
Potential Habitat ◽  
Specimen Collection ◽  
Eastern Australia ◽  
Spatial Isolation ◽  
Observational Bias ◽  
Western Victoria

The southern brown bandicoot (Isoodon obesulus) occurs across the periphery of southern and eastern Australia as a series of isolated regional populations. Historical records and recent surveys conducted for I. obesulus indicate that it has disappeared or decreased significantly from many parts of its former range. Vegetation clearance, habitat fragmentation, feral predators and fire have all been implicated in the decline of the species. This paper examines the distribution of I. obesulus in the Portland region of south-western Victoria. Historical records of I. obesulus were compiled from the specimen collection of Museum Victoria, the Atlas of Victorian Wildlife, Portland Field Naturalists’ Club records and anecdotal sources. Field surveys were conducted to determine the current distribution of I. obesulus in the study area based on evidence of its foraging activity. The historical records reveal limited information: most are clustered around centres of human activity, indicating observational bias. The field surveys demonstrate that I. obesulus occurs in the Portland region as a series of local populations. Each local population is associated with a patch of remnant native vegetation separated from neighbouring patches by dispersal barriers. Within these habitat remnants the occurrence of the species is sporadic. Approximately 69% of the potential habitat is managed by the Forests Service, 31% is managed by Parks Victoria, and less than 0.5% is held under other tenures. Spatial isolation of habitat remnants, fires and feral predators are the main threats to I. obesulus in the Portland region.

scholarly journals Habitat Characteristics Coincidence of Dead and Living Long-Tailed Gorals (Naemorhedus caudatus) According to Extreme Snowfall

Animals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 997
Author(s):  
Hee-Bok Park ◽  
Sungwon Hong
Keyword(s):  
Species Distribution Modeling ◽  
Habitat Characteristics ◽  
Heavy Snowfall ◽  
Field Surveys ◽  
Location Data ◽  
Pregnant Females ◽  
Occurrence Data ◽  
Animal Remains ◽  
Extensive Field ◽  
Lower Mobility

The long-tailed goral (Naemorhedus caudatus) is a critically endangered herbivore in South Korea. Despite government efforts to recover the population through reintroduction programs, the animal remains vulnerable to heavy snowfall. From March to June 2010, 24 animals were found dead due to heavy snowfall in the Wangpi Stream basin. In this study, we hypothesized that gorals that died due to snowfall are low-status individuals that lived in the sub-optimal or non-suitable areas. Using the occurrence data from extensive field surveys from 2008 to 2010 in the Wangpi Stream and the carcass location data, we (1) defined the goral habitat characteristics and (2) compared the habitat characteristics between dead and living gorals using ensemble species distribution modeling. The results suggested that the sites where dead gorals were found were highly related to typical goral habitats. These results implied that the optimal goral habitats could become uninhabitable following heavy snowfall. Most of the dead animals were pregnant females or were young, implying that they could not escape their primary habitats due to lower mobility. Thus, when there is a climate catastrophe, the optimal goral habitats should be considered for rescue and artificial feeding.

A refined circumscription of Notobubon striatum and the resurrection of Dregea collina Ecklon & Zeyher (Apiaceae, Apioideae)

Phytotaxa ◽  
2016 ◽  
Vol 266 (1) ◽  
pp. 27 ◽  
Author(s):  
ANTHONY R. MAGEE ◽  
ODETTE E. CURTIS ◽  
B-E. VAN WYK
Keyword(s):  
Conservation Status ◽  
Leaf Size ◽  
Type Specimen ◽  
Distinct Species ◽  
Critically Endangered ◽  
Type Material ◽  
New Combination ◽  
Careful Examination ◽  
Field Surveys ◽  
Extensive Field

Extensive field surveys of the Critically Endangered Central and Eastern Rûens Shale Renosterveld have uncovered that Notobubon striatum, as currently circumscribed, comprises two distinct species. Upon careful examination of the type material it has become clear that names exist for both species. The type specimen of N. striatum clearly matches the lesser known species, a large shrub, ca. 1 m. tall, with a powerful anise-scent and which is restricted to the banks of seasonal rivers and watercourses in the Central and Eastern Rûens Shale Renosterveld. The second and better known entity, with a wider distribution, corresponds to the type material of Dregea collina Ecklon & Zeyher. As such, a new combination, Notobubon collinum (Ecklon & Zeyher) Magee, is here made to accommodate this taxon, restricted to dry quartz and silcrete patches or outcrops in Eastern Rûens Shale Renosterveld. In their revised circumscriptions N. striatum and N. collinum are readily distinguished by habit, scent, leaf size and division, as well as leaf lobe shape and sepal size. Comprehensive descriptions of both species are provided, together with notes on their ecology and conservation status, and the existing key to the species of Notobubon updated. This brings the number of recognised species in the genus to thirteen.

Chemotaxonomic study of the Lethariella cladonioides complex (lichenized Ascomycota, Parmeliaceae)

2011 ◽  
Vol 43 (3) ◽  
pp. 213-223 ◽  
Author(s):  
Dong-ling NIU ◽  
Hiroshi HARADA ◽  
Li-song WANG ◽  
Ying-jun ZHANG ◽  
Chong-ren YANG
Keyword(s):  
Chemical Analysis ◽  
Field Surveys ◽  
Chemical Polymorphism ◽  
Extensive Field ◽  
Chemotaxonomic Study

AbstractA chemotaxonomic study was carried out on the Lethariella cladonioides complex, including L. sernanderi and L. cashmeriana of the subgenus Chlorea, based on extensive field surveys and a detailed morphological and chemical analysis. Only one species, L. cladonioides made up of five chemical races, is recognized. Lethariella sernanderi and L. cashmeriana are reduced to synonyms under L. cladonioides. The presence of a remarkable chemical polymorphism within the population of L. cladonioides is demonstrated. New data on the chemistry and the distribution of the species are presented.

scholarly journals Legumes of Kerala, India: a checklist

2021 ◽  
Vol 13 (5) ◽  
pp. 18257-18282
Author(s):  
Anoop P. Balan ◽  
S.V. Predeep
Keyword(s):  
Western Ghats ◽  
Single Species ◽  
Biodiversity Hotspot ◽  
The State ◽  
Field Surveys ◽  
Extensive Field ◽  
Voucher Specimens ◽  
Kerala State ◽  
The Western Ghats

A checklist of the legumes of Kerala State is presented.  This exhaustive checklist is an outcome of extensive field surveys, collection, identification and documentation of family Leguminosae carried out across Kerala State during the period 2006–2019.  A total of 448 taxa were recorded under five subfamilies and 115 genera.  The majority of the legumes are herbs and shrubs, the rest being trees and woody climbers.  About 81 taxa are endemic to India, especially confined to the Western Ghats biodiversity hotspot, out of which 17 are endemic to  Kerala.  The state is home to two Critically Endangered and six Endangered legumes, facing severe threat of extinction.  Crotalaria is the dominant legume genus in the state with 62 taxa followed by Desmodium and Indigofera.  About 57 genera are represented by single species each.  Legumes are treated according to the latest phylogenetic classification of the Legume Phylogeny Working Group (LPWG).  Updated nomenclature, habit, native countries, voucher specimens, and images of endemic and lesser known legumes found in the state are provided.  Crotalaria multiflora var. kurisumalayana (Sibichen & Nampy) Krishnaraj & N. Mohanan is reduced as a synonym to C. multiflora (Arn.) Benth.

scholarly journals The oat-like grass Trisetopsis aspera (Munro ex Thwaites) Röser & A.Wölk (Poaceae): a new record for the flora of central Western Ghats of Karnataka, India

2021 ◽  
Vol 13 (1) ◽  
pp. 17601-17603
Author(s):  
H.U. Abhijit ◽  
Y.L. Krishnamurthy ◽  
K. Gopalakrishna Bhat
Keyword(s):  
Random Sampling ◽  
Western Ghats ◽  
New Record ◽  
Sampling Method ◽  
Field Surveys ◽  
Extensive Field ◽  
Central Western Ghats

For the documentation of grasses in the central Western Ghats of Karnataka, we have conducted the extensive field surveys by using random sampling method from 2017 to 2020.  During this survey we have collected some grass specimens from the shola grassland, which forms the new distributional record of Trisetopsis aspera (Munro ex Thwaites) Roser & A. Wolk to the flora of central Western Ghats, Karnataka, India from the montane high- lands of Baba Budangiri hills of Chikkamagaluru District.

scholarly journals Documentation of Commonly Used Ethnoveterinary Medicines from Wild Plants of the High Mountains in Shimla District, Himachal Pradesh, India

Horticulturae ◽  
2021 ◽  
Vol 7 (10) ◽  
pp. 351
Author(s):  
Pramod Prakash ◽  
Radha ◽  
Manoj Kumar ◽  
Ashok Pundir ◽  
Sunil Puri ◽  
...  
Keyword(s):  
Medicinal Plants ◽  
Traditional Knowledge ◽  
Wild Plants ◽  
Rural People ◽  
Field Surveys ◽  
Extensive Field ◽  
Permanent Loss ◽  
Rosaceae Family ◽  
Medicinal Properties ◽  
Livestock Diseases

The aim of current study is to provide a significant traditional knowledge on wild medicines used for ethnoveterinary purposes in the rural area of Maraog region in district Shimla. The medicinal plants have played a significant role in the treatment of human as well as animal’s diseases. The rural people of the Maraog region were interviewed through a questionnaire and extensive field surveys were conducted from June 2020 to July 2021. The discussion, observations and interviews were conducted in study site and included 96 informants. The information gathered from the residents is presented in a table format and includes scientific and local names, different parts used, diseases treated and mode administration. The most commonly used taxa are calculated with used value. The study revealed 100 plants in which trees (7), shrubs (26), herbs (56), ferns (5), grasses (3) and climbers (3) were identified. The most commonly documented livestock diseases were found to be hoof infections, eyes infections, poisoning and skin infections. In the current study, the Rosaceae family was reported as being the highest number (11), followed by Asteraceae (10) and then Lamiaceae (6). It was found that leaves, roots, flowers and fruits are the commonly used parts for ethnoveterinary medications. The phytochemicals present in the plant, such as alkaloids, sterols, glycosides, flavonoids, lignin, coumarins and terpenoids, etc., may be responsible for their medicinal properties. In this documentation, it was observed that the younger generation does not have good knowledge of medicinal plants as compared to the older ones. Therefore, it is necessary to preserve the traditional knowledge of these medicinal plants before their permanent loss. The documentation and conservation of medicinal plants can be a good start for novel phytopharmacological research in the veterinary field.

Cynipidae (Insecta: Hymenoptera) fauna of Kazdağı National Park (Turkey)

Zootaxa ◽  
2020 ◽  
Vol 4802 (2) ◽  
pp. 317-334
Author(s):  
GAMZE KARACA ◽  
YUSUF KATILMIŞ
Keyword(s):  
Host Plant ◽  
Plant Species ◽  
National Park ◽  
Host Plants ◽  
Locality Record ◽  
Field Surveys ◽  
Host Plant Species

Field surveys were carried out to determine the richness of the Cynipidae fauna of Kazdağı National Park, located on the border of Edremit county (Balıkesir province, Turkey). Gall samples of cynipids were collected or photographed on Quercus and Rosa host plants. As a result, 53 cynipid species belonging to 3 different tribes were found or observed in the surveyed area. 14 and 8 species were recorded as new for the Cynipidae fauna of Balıkesir and Çanakkale provinces respectively, including the first locality record of Andricus hystrix Trotter, 1897 for Turkey. In addition, color photos of reared cynipid wasps from their galls and the observed cynipid galls on their host plant species are presented. 

scholarly journals Rescuing Christensenia aesculifolia (Marattiaceae), a plant species with an extremely small population in China

Oryx ◽  
2018 ◽  
Vol 53 (3) ◽  
pp. 436-438
Author(s):  
Lei Cai ◽  
Guiliang Zhang ◽  
Jianying Xiang ◽  
Zhiling Dao ◽  
Weibang Sun
Keyword(s):  
Plant Species ◽  
Small Population ◽  
Provincial Government ◽  
South East Asia ◽  
Small Populations ◽  
Species Status ◽  
Field Surveys ◽  
Field Investigations ◽  
Threatened Habitat ◽  
Extant Population

AbstractThe rare and threatened fern Christensenia aesculifolia of South-east Asia is listed in China as a second-ranked plant for national protection and is also categorized as one of 62 plant species with extremely small populations by the Yunnan provincial government. Field investigations during 2014–2017 failed to relocate one previously known population, and revealed that the single known extant population of C. aesculifolia contains only 10 individual plants. The most urgent conservation requirement for this species is to conserve the threatened habitat of the remnant population. Further field surveys and research are also required for an improved understanding of the species’ status.

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