scholarly journals HYDKOSEDIMENTOLOGICAL STUDIES IN BAHIA BLANCA

1982 ◽  
Vol 1 (18) ◽  
pp. 76
Author(s):  
R.V. Petroni ◽  
D.D. Serman ◽  
R.S. Escalante
Keyword(s):  
Outer Part ◽  
Tidal Range ◽  
Buenos Aires Province ◽  
Field Surveys ◽  
Influence Area ◽  
Extensive Field ◽  
Navigation Channel ◽  
Grain Trade ◽  
The Mean ◽  
Long Channel

The increasing international grain trade make it necessary to have more deep facilities for large draught ships. Within the areas of major agriculture developments, Bahia BIan ca harbour complex, is one of the most important and consequen (;ly also its improvement. In order to achieve this improvement a deeper and wider navigation channel has to be designed. The actual channel, 100 km. long is limited to bulk up to 37 ft. draught. It is developed along a sandy coast with large bars and islands. Bahia Blanca is the southwest of the Buenos Aires Province, within trapezoidal shape, where the mean tidal range chang m in the inner part to 1,8 m in the outer part. Try prove a so long channel in a complex sedimentologic imply a rather difficult task, which requires a ful gation programme to achieve an economical and techn tion. To this end, extensive field and desk studies ed out covering all the influence area and testing altematives . . carriers and silty located at a Bay of es from 3,5 ing to imal area . ly investiical so luwe re carri different One of the major problems to solve is the sedimentological sta bility of the channel due to the action of currents and waves. The use of mathematical models and of large and reliable field surveys, together with a pilot test dredging used as a one to one model for the calibration of the transport formulas, looks as the most suitable method to attack such problems. The results of this study are part of the navigation channel project carried out by the firm NEDECO-ARCONSULT for the Argen tine Government.

scholarly journals Systematic analysis of leisler’s bat Nyctalus leisleri (Kuhl, 1817) captured from FATA region, Pakistan

2022 ◽  
Vol 82 ◽  
Author(s):  
I. Hussain ◽  
S. A. Mehmood ◽  
S. Ahmed ◽  
M. Salim ◽  
A. Hussain ◽  
...  
Keyword(s):  
Tail Length ◽  
Coi Gene ◽  
Bootstrap Support ◽  
Systematic Analysis ◽  
Field Surveys ◽  
Nyctalus Leisleri ◽  
Extensive Field ◽  
Hind Foot ◽  
The Mean ◽  
Nyctalus Noctula

Abstract Extensive field surveys were carried out to explore the distribution of Leisler’s Bat Nyctalus leisleri (Kuhl, 1819) in selected area of FATA regions, Pakistan. Specimens of Leisler’s Bat Nyctalus leisleri (Kuhl, 1819) (n5) were collected from Kurram Agency (Shublan) (N33.8229788 E70.1634414) at elevation 1427m and Khyber Agency (Landi Kotel) (N34.0909899 E71.1457517) at elevation 1091m for two years survey extending from May 2013 through August 2015. The mean head and body length, hind foot length, ear length and tail length the Nyctalus leisleri specimens captured from the study area was 65.08 ± 1.58 mm, 44.06 ± 0.52 mm, 8.38 ± 0.60 mm, 13.20 ± 0.99 mm and 39.46 ± 1.46 mm, respectively. For molecular analysis the sequences of COI gene were obtained and analyzed. The mean intraspecific divergences of Nyctalus leisleri was 0.04%. The mean interspecific divergences of Nyctalus noctula and Nyctalus leisleri was 0.2%. The mean concentration of each nucleotides was A = (26.3%), T = (32.8%), G = (15.9%) and C = (25.0%). The mean A+T contents were 59.2%and C+G were 40.9%. In the phylogenetic tree Nyctalus leisleri and Nyctalus noctula clustered with significant bootstrap support value.

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 Suitable Turbine Selection based on the Parameters of a Potential Site at Sarawak, Malaysia

2020 ◽  
Vol 10 (6) ◽  
pp. 6399-6402
Author(s):  
K. A. Samo ◽  
I. A. Samo ◽  
W. Mughal ◽  
A. R. H. Rigit ◽  
A. A. Sohoo
Keyword(s):  
Energy Source ◽  
Renewable Energy Source ◽  
Renewable Energy ◽  
Flow Rate ◽  
Electrical Power ◽  
Maximum Flow ◽  
Tidal Range ◽  
Potential Site ◽  
The Mean ◽  
Suitable System

The tidal range is a renewable energy source. In Malaysia, most of the produced renewable energy is generated from the exploitation of the tidal range. The main purpose of this research is to determine a suitable system to produce tidal range energy from a potential site. A turbine selection chart is used. The mean tidal range of Kuching Barrage is 4.2m and the maximum flow rate over a gate is 226.9m3/s. Therefore, for the extraction of electrical power, a bulb-type turbine with a rated power of 5.2MW is identified as suitable to be deployed at the site.

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.

Moon and tide effects on fish capture in a tropical tidal flat

2010 ◽  
Vol 91 (3) ◽  
pp. 735-743 ◽  
Author(s):  
José Amorim Reis-Filho ◽  
Francisco Barros ◽  
José De Anchieta Cintra Da Costa Nunes ◽  
Cláudio Luis Santos Sampaio ◽  
Gabriel Barros Gonçalves De Souza
Keyword(s):  
Tidal Flat ◽  
Dominant Species ◽  
Full Moon ◽  
Diversity Indices ◽  
Tidal Range ◽  
Species Number ◽  
Trophic Groups ◽  
Significant Difference ◽  
The Mean ◽  
Tropical Tidal Flat

The influence of the lunar phases and tidal range on the fish capture was analysed in a tidal flat in Barra do Paraguaçu (Baía de Todos os Santos). The sampling was realized in the flood tide and ebb tide of the spring (full moon) and neap (waning moon) tides, between June 2007 and May 2008. At all sampling occasions, two parallel drags were accomplished to the tidal flat, in the same direction of the current, in a 100 m long area marked on the beach beforehand, using a seine net of 15 m × 2.0 m with a mesh of 12 mm between adjacent knots. A total of 2312 fish specimens were captured (26.5 kg), belonging to 75 species from 45 families. The mean number of captured fish was significantly larger in full moon at ebb tides, while the mean weight in the captures was larger in ebb tides. There was significant difference in number of species, number of fish, richness and diversity between full and waning moons. The number of fish and biomass were significantly different between tides. Significant differences were found in community structure regarding trophic groups in relation to tide and moon, although the classic diversity indices did not capture this effect between tides. Furthermore, it was possible to identify preferences of occurrence related to the change of tide in dominant species.

A theoretical analysis of the use of submarine cables as electromagnetic oceanographic flowmeters

1976 ◽  
Vol 280 (1297) ◽  
pp. 355-396 ◽  
Keyword(s):  
Storm Surges ◽  
Weight Vector ◽  
Tidal Range ◽  
Submarine Cable ◽  
Vector Distribution ◽  
Simplifying Assumptions ◽  
The Mean ◽  
Residual Flows ◽  
Electro Magnetic ◽  
Submarine Cables

An examination is made of the theoretical basis and simplifying assumptions governing the use of the voltage measured across the ends of a submarine cable as a measure of the sea flow across the cable section. In part I a method of calculating the response of an electro-magnetic flowmeter by means of a weight vector is applied to the oceanographic situation. A numerical model is developed which generates the weight vector distribution for given submarine cables. In part II, weight vector distributions are obtained for various cables around the British Isles, and the cable responses to given velocity distributions in the sea are calculated. It is shown that the velocity distributions associated with different tidal frequencies, storm surges and long period residual flows will result in different responses at a given cable. The implications of this are discussed. The effect on the cable response of seasonally varying sea conductivity, and of a tidal range which is not negligible compared with the mean depth, is also modelled.

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