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Journal de la biodiversité et des espèces menacées

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Volume 9, Problème 3 (2021)

Accès libre

Amphibian and reptiles of Yakutia, their distribution and biodiversity

Victor Timopheevich Sedalischev

Four amphibian and three reptile species inhabit Yakutia, Amphibians: Salamandrella keyserlingii-Northern border of the species range travels along river valleys to Tit-Ary Island (River Lena), in Lower Yana and Indigirka Rivers - to 71° N. In 1970s, number of Siberian salamanders in summer time was 7-10 individuals for 1 m² in Lena Valley. At the last, the species number get lowered and 1-3 individuals for 100 m of coastline were registered at the same region. Rana arvalis inhabits Lena valley and her tributaries. Northern border of the species range travels to 60° N, 124° E. The number is 1-15 individuals for 1/hа. Rana chensinensis is allocated in southern Yakutia by Aldan River and its tributaries valleys. The species goes to 60° N. The number is 15-20 individuals for 1 hа. All these three species are embraced to Yakutia Red Data Book.

In general, the outlook for amphibian staying power withinside the Arctic might be good. The species all seem secure globally, with Arctic populations representing the northern edge of an awful lot large distributions to the south. However, conservation of Arctic reptiles and amphibians will face some of demanding situations withinside the instant future and over the subsequent century, which includes contaminants from neighborhood and worldwide sources, anthropogenic habitat alteration, rising infectious diseases, weather change-brought about habitat alteration and loss, and the creation of novel pathogens and predators.

Environmental contaminants originating both from neighborhood factor reassets or from diffuse nearby and/or international reassets may also effect many in any other case undisturbed Arctic wetlands. Ackerman et al. (2008) and Landers et al. (2008) discovered concentrations of atmospherically deposited natural and different contaminants in fish from far off lakes in Arctic and sub-Arctic Alaska that exceeded thresholds of fitness subject for human beings and wildlife.

Because the take a look at webweb sites had been all placed in far off areas without a neighborhood contaminant reassets, their presence was attributed to long-variety trans-Pacific delivery and to international reassets. The threat to amphibians is doubtful and undocumented, however because of their aquatic developmental phase, wet and pretty permeable integuments, larval diets of zooplankton, phytoplankton and periphyton and person diets of better trophic stage invertebrates, they may also be predisposed to bio-collect a whole lot of contaminants while gift withinside the environment.

Rana amurensis is distributed on all Yakutia from West to East. It was located in north from 68° in valleys of rivers Lena, Yana, Indigirka аnd in the most northern point in Upper Yana region (71° N) and Reptiles: Lacerta vivipara is widely allocated in taiga zone of Yakutia. The northern border of the species range is 145° E in Indigirka basin. The number in Central Yakutia is low (single individuals were registered). Vipera berus by Lena valley, the species goes to 60° N. The number is 0.4 ind./hа. All mentioned reptiles embraced to Red Book of Yakutia. At the last years, Gloydius halys was registered regularly in entrance of Tokko River. Coming to Yakutia of this species is an important evidence of climate warming. Although the reptile and amphibian populations were stable in early 80s, up to date they are low and diminishing, even in such mass to lately as Rana amurensis. Rana arvalis, Rana chensinensis, Gloydius halys go northward.

Accès libre

From the cultural desk of India: Expressions of agro-biodiversity in a festival called Thiruvathira

Mini N Vijayan

The Brahmin network in Kerala has a ritualistic subculture and every and each standard ritual is green and in large part uses the nearby plant biodiversity. Written documentations on this regard are very uncommon and if in any respect recorded are historical and thereby inaccessible to the not unusual place guy because of linguistic barriers. In the backdrop of this scenario, the writer who herself is a member of this network felt the need for a systematic documentation, in large part due to the fact the traditions accompanied with the aid of using the network ingrained inside it the historical information of residing in unison with nature. The E-book written in Malayalam language with the aid of using Late Smt. Parvathy Antherjanam- ???Antherjanangalude aacharanushtanangal??? (Customary rituals and spiritual rites determined with the aid of using ladies of Brahmin network, 2002); the most effective one in every of its type and discussions with the elders with inside the network have shaped the premise of this studies.

At the planet scale, range of species grown is essential. Underutilized staple meals (eg. tef, buckwheat, amaranth, quinoa, millets)  want studies in order that their manufacturing may be worthwhile for farmers and for sustainable use of the land. Because of weather alternate and the want to lessen agriculture carbon footprint, efficient use of land is paramount: we must keep away from in any respect charges similarly land clearing. For the subsequent four decades, till international populace stabilizes (in round 2060), the developing call for for meals must be met through developing greater meals from the identical area. This would require intensive, fairly efficient systems. Agricultural biodiversity can make contributions to the intensification: developing greater species, greater plants in line with year, species together (intercropping, blended cropping), novel rotations, etc. Agricultural biodiversity also can help in transitioning diets to greater pulses (eg. bambara, cowpea, fonio, beans), end result and nuts as a manner to lessen meat intake as recommended through the EAT-Lancet report.

At the local scale, developing a variety of species allows numerous resources to the local markets. However there are instances in which specialized in depth manufacturing in a single place with delivery of the produce to different regions is extra sustainable use of the land and the resources (eg. Carbon emitted in keeping with kg of produce).

At the farm scale: Ago-ecological parameters (latitude, temperature, day length, water precipitation or irrigation availability, land topography and soil types, etc.)  and socio-political parameters (populace density, landholding size, land tenure arrangements, get right of entry to to farm input, credit score and insurance, get right of entry to to markets, etc.) decide for a huge element which vegetation may be grown in a selected vicinity at a selected time. Once those key parameters are accounted for, marketplace call for and policies (eg. authorities procurement subsidies) will affect farmers’ character choices of what they develop and how.

The studies paper brings forth a few expressions of conventional agro-biodiversity in reference to a spiritual competition celebrated with inside the nation known as Thiruvathira. Ettangadi is a standard fit to be eaten coaching made at some stage in the competition which uses six varieties of tubers and some different agricultural products. The ethno agro variety in Ettangadi coaching is mentioned and the 8 species are scientifically documented. A overview at the meals fee and dietary and healing factors of the flowers also are recorded with inside the study. Documenting, tapping such indigenous know-how pass an extended manner now no longer most effective in beginning new vistas in meals protection however additionally in holding biodiversity of a region.

Accès libre

Integration of agricultural education and biodiversity: Introducing synecoculture into elementary school in Taiwan

Kai-Yuan Lin

As food protection incidents manifest continually, human beings placed extra problem on meals, therefore ???Food and agricultural schooling??? grow to be a trend. Food and agricultural schooling are divided into parts, one is meals schooling that mixes nutrition, protection and culture, the opposite is agriculture schooling that specializes in meals source, farming and environment. Currently, instructors train the nutrition, biology that is written at the textbook, however with out the realistic and in-area experience, the agriculture schooling is inadequate in Taiwan. Our undertaking combines agriculture schooling and synecoculture, in collaboration with Sony CSL in Japan. Synecoculture is an open-area crop cultivation method, which removes using tillage, fertilizer, pesticide, herbicide and absolutely is based at the productiveness primarily based totally on biodiversity. There are 3 motives to instigate synecoculture to the primary school:(1) Less field labor which makes easier approach for elementary school students to experience and understand, (2) It includes both knowledge and practice: Learning on biodiversity and the training of farming skills and (3) Elementary school is the primary education that makes an important influence in one???s life. Our primary object of introducing this system into elementary school is to raise future educators and students??? confidence and familiarity to farming. Inspire their concern about biodiversity, and rethinking the origin of food. The first step is to build teachers??? know-how and skill of synecoculture. After instructors might come to be greater acquainted with discipline operating and collect farming skill, the following step is to realise and fuse the agriculture training into the guides and paintings with students.

This studies proposes approach and layout of biodiversity understanding constructing in agricultural training, grade by grade overcoming the issue and to layout a sequence of guides for college students in a sensible way.In addition, inside the agriculture training, the facts on plant boom can be gathered and analyzed with statistical tools.

Agricultural biodiversity is critical to human survival and the sustainability of agroecosystems. Yet, many college graduates have best constrained competence on this field. To cope with this understanding gap, Bioversity International works with agricultural universities and networks to combine agricultural biodiversity into curricula and fortify institutions’ ability to train the subject.

Continued genetic erosion and demanding situations of feeding the arena with the aid of using 2050 has led scientists and coverage makers to step up their paintings on agricultural biodiversity. For example, FAO’s Commission on Genetic Resources for Food and Agriculture video display units the reputation of the arena’s plant, animal and woodland genetic assets and informs coverage makers on such trends. Agricultural biodiversity is a thematic programme below the Convention on Biological Diversity (CBD).  Knowledge of agricultural biodiversity is important to knowledge the influences of, and variation to, weather alternate and variability. Food structures processes that use agricultural biodiversity to enhance vitamins and fitness is gaining ground. Such new studies findings and guidelines want to discover their manner into the schooling system.

Accès libre

Biodiversity conservation and enhanced medicinal properties in Asparagus racemosus Willd

Ashok Kumar

The natural resources for medicinal plants have unscientifically been exploited forcing express depletion in their genetic diversity and biodiversity. Moreover, renewed global interest in herbal medicines may further reduced medicinal plant wealth, as about 95 % collection of medicinal plants for pharmaceutical composition is being carried out from natural forests. Asparagus racemosus Willd, a member of family Liliaceae, is one of 32 plant species that have been precedence for cultivation and conservation by the National Medicinal Plant Board of Government of India. Extremely limited research has been carried out on genetic development and selection of desired types with elevated root production and saponin content, a basic ingredient of medicinal value. The saponin not only improves defense mechanisms and controls diabetes but the roots of this species promote secretion of breast milk, better lost body weight and considered as an aphrodisiac. It was emphasized to choose desired genotypes with sufficient genetic diversity for important economic traits. The evaluation of 20 seed sources of Asparagus racemosus collected different geographical locations of India revealed high degree of variability for traits of economic deviation. The maximum genotypic and phenotypic variance was noticed for shoot height among shoot related traits and root length among root related traits. The shoot height, genotypic variance, phenotypic variance, genotypic coefficient of deviation, phenotypic coefficient of variance were recorded to be 231.80, 3924.80, 61.26 and 1037.32, respectively, where those for root length were 9.55, 16.80, 23.46 and 41.27, respectively. Maximum genetic advance and genetic gain were acquired for shoot height among shoot-related traits and root length among root-related traits. Index values were developed for all seed origins based on four most important traits and Pantnagar (Uttarakhand), Jodhpur (Rajasthan), Dehradun (Uttarakhand), Chandigarh (Punjab), Jammu (Jammu and Kashmir) and Solan (Himachal Pradesh) were found to be promising seed origin.

Asparagus racemosus Willd. (Asparagaceae) is an vital medicinal plant of tropical and subtropical India. Its medicinal utilization has been mentioned withinside the Indian and British Pharmacopoeias and in conventional structures of medication which includes Ayurveda, Unani and Siddha. Asparagus racemosus is especially regarded for its phytoestrogenic properties. With an growing awareness that hormone alternative remedy with artificial oestrogens is neither as secure nor as powerful as formerly envisaged, the hobby in plant-derived oestrogens has multiplied incredibly making Asparagus racemosus mainly vital. The plant has been proven to resource withinside the remedy of neurodegenerative issues and in alcohol abstinence-prompted withdrawal symptoms. In Ayurveda, Asparagus racemosus has been defined as a rasayana herb and has been used considerably as an adaptogen to growth the non-precise resistance of organisms towards a number of stresses. Besides use withinside the remedy of diarrhoea and dysentery, the plant additionally has powerful antioxidant, immunostimulant, anti-dyspepsia and antitussive effects.

These consist of an incomplete expertise approximately the interaction/synergy among Asparagus racemosus and different plant materials in polyherbal formulations; loss of records concerning the mode of motion of the diverse materials of Asparagus racemosus, etc. Consequently, we've recommended a structures biology technique that consists of metabolite profiling, metabolic fingerprinting, metabolite goal evaluation and metabonomics to allow in addition research.

Accès libre

Biodiversity of Manukau mangroves; Whats really in there?

Amrit Melissa Dencer Brown

The accelerated seaward growth of the mangrove Avicennia marina subsp. australasica over the last century has altered the ecology of estuarine and coastal ecosystems throughout North Island, New Zealand. Expansion has created a myriad of real and perceived social-ecological issues regarding the future of the local communities who live in these areas and potential impacts to New Zealand biodiversity. As a result, there have been many applications submitted to regional councils for their removal. However, the social-ecological problems and associated affects aren't but nicely understood and there are sizable expertise gaps. Further studies is essential for making knowledgeable and evidence-primarily based totally decision-making across the elimination and maintenance of those mangrove systems. Whilst there was a robust attempt to quantify benthic network compositional extrade following mangrove status quo and next elimination, there's a loss of long-time period tracking of different businesses of organisms, mainly terrestrial vertebrate and invertebrate species. This studies provides the findings of included biodiversity surveys amassed at 4 webweb sites in mangroves of Manukau Harbour (March-Apr 2018). Aim: To look at what biodiversity of species exists at fragmented mangrove webweb sites in Auckland.

Mangroves develop withinside the inter-tidal area, among the excessive and occasional tide. Thus, they offer a habitat for roosting and replica of terrestrial, coastal and marine biodiversity. Besides the real mangrove species, partner flora just like the Meswak and Sea Purslane develop in the direction of the land farfar from the water frame to keep away from extra salinity.

By arresting the wind and tidal force, mangroves offer a secure nursery for aquatic creatures to breed. The hatchlings thrive withinside the meals chain of mangroves surroundings and go back to the open seas as adults. Several species of crab, prawn, lobster, fish, snake and others take refuge here. Reptiles, birds and mammals are key hyperlinks withinside the mangrove meals chain. Adaptive mammals like jackal, mongoose, wild boar, civet, otter, etc. may be noticed in undisturbed mangroves.

Methods: A variety of various non-invasive strategies had been hired to document presence/absence facts of reptiles, mammals, fish and birds making use of mangroves. Insects and spiders had been captured and preserved for identity and destiny research. Results: All organizations of organisms had been observed apart from reptiles; skink became located on the marsh-mangrove edges. The maximum fragmented patch of mangrove had the maximum species in phrases of bugs and spiders and hen species. The threatened hen the Banded Rail became gift at 50% of the webweb sites. There had been full-size variations among the webweb sites doubtlessly pushed with the aid of using the proximity and connectivity to close by forested habitats. Conclusion: Sites range in phrases of biodiversity and so every webweb page wishes to be monitored long-time period earlier than any removal. The fairly fragmented webweb page ought to be preserved and guarded because of its healthful and excessive ecological functioning, inclusive of habitat for shortfinned eels and juvenile yellow-eyed mullet. The outcomes of those checks have the capacity to be applied in coverage for mangrove biodiversity tracking which can be carried out throughout New Zealand and to mangroves internationally.

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