scholarly journals SINGLE SPECIES AND MIXED SOYA FOR SILO IN THE SOUTH OF THE NON-BLACK EARTH ZONE

2020 ◽  
pp. 45-47
Keyword(s):  
Single Species ◽  
The South

scholarly journals A check list of the spider fauna of the Karoo National Park, South Africa (Arachnida: Araneae)

Koedoe ◽  
1999 ◽  
Vol 42 (1) ◽  
Author(s):  
Anna S. Dippenaar-Schoeman ◽  
Astri Leroy ◽  
Marie De Jager ◽  
Annette Van den Berg
Keyword(s):  
South Africa ◽  
South African ◽  
National Survey ◽  
Habitat Preference ◽  
National Park ◽  
Single Species ◽  
Check List ◽  
The South ◽  
Spider Species ◽  
Number Of Species

A check list of the spider species of the Karoo National Park collected over a period of 10 years is presented. Thirty-eight families, represented by 102 genera and 116 species have been collected. Of these species, 76 (66.4 ) were wanderers and 39 (33.6 ) web builders. The Araneidae have the highest number of species (14) followed by the Thomisidae (10) and the Gnaphosidae (8), while 14 families are represented by a single species. Information on spider guilds, their habitat preference and web types is provided. This study forms part of the South African National Survey of Arachnida (SANSA).

scholarly journals A new nomenclatural change in Polycarpon (Caryophyllaceae): P. tetraphyllum subsp. sauvagei comb. & stat. nov., an endemic taxon from Morocco

Phytotaxa ◽  
2015 ◽  
Vol 197 (3) ◽  
pp. 225 ◽  
Author(s):  
Duilio Iamonico
Keyword(s):  
Single Species ◽  
South American ◽  
The South ◽  
Restricted Sense ◽  
Endemic Taxon ◽  
Nomenclatural Change ◽  
New Nomenclatural Combinations

The recent molecular investigations by Kool et al. (2007) clearly showed the polyphyly of the genus Polycarpon Linnaeus (1759: 859, 881) which includes, in the new restricted sense, only the taxa belonging to the Polycarpon tetraphyllum clade, while the South American P. suffruticosum Grisebach (1874: 77−78), and P. coquimbense Gereau & Marticonema (1995: 154), and the widespread tropical P. prostratum (Forsskål 1775: 207) Ascherson & Schweinfurth (1889: 128) are to be excluded. Kool et al. (2007) also suggested treating all the members of the P. tetraphyllum group as a single species with the recognition of several subspecies. Accordingly, Iamonico (2013), and Iamonico & Domina (2015) proposed four new nomenclatural combinations [a further proposal about the northwestern American P. depressum Nuttal ex Torrey & Gray (1838: 174) is in preparation].

scholarly journals A NEW SPECIES OF Lankascincus GREER, 1991 (REPTILIA : SCINCIDAE) WITH AN OVERVIEW OF THE L. gansi GROUP

2020 ◽  
Vol 9 (1) ◽  
pp. 103-119
Author(s):  
A. Suneth Kanishka ◽  
A. Dineth Danushka ◽  
A.A. Thasun Amarasinghe ◽  
Keyword(s):  
New Species ◽  
Sri Lanka ◽  
Single Species ◽  
The South ◽  
New Name ◽  
Bioclimatic Zone ◽  
Lowland Rainforest ◽  
Morphology And Morphometry ◽  
High Elevations ◽  
A New Species

Lankascincus gansi has been considered as a widespread single species, distributed in the wet bioclimatic zone of Sri Lanka (alt. below 1,100 m a.s.l.). After a thorough comparison of morphology and morphometry, we recognised two distinct populations from (i) high-elevations (1,000 m a.s.l.) of the Rakwana Hills and (ii) the south western lowland wet zone [mid-elevations (200–500 m a.s.l.) of the western slopes of the central highlands and the southwestern lowland (0–300 m a.s.l.)]. These are sufficiently different from one another that we restrict the name L. gansi to the lowland rainforest population, and assign a new name to the Rakwana Hills population. We provide a comprehensive re-description for L. gansi based on three topotypes collected from Udugama, Sri Lanka. Considering the lack of morphological distinctiveness and biogeographical isolation we here synonymise L. greeri[i] with [i]L. deignani. A key to the species of the genus Lankascincus is provided.

scholarly journals First record of Monotaxis heterodon (Actinopterygii: Perciformes: Lethrinidae) from the lagoon waters of Mischief Reef, South China Sea

2021 ◽  
Vol 51 (3) ◽  
pp. 321-325
Author(s):  
Yu Zhao ◽  
Wenli Zhou ◽  
Binbin Shan ◽  
Yan Liu ◽  
Changping Yang ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Single Species ◽  
First Record ◽  
The South China Sea ◽  
Morphometric Study ◽  
The South ◽  
China Sea ◽  
Percentage Points

Monotaxis heterodon (Bleeker, 1854) is widespread in the Indo-Pacific Ocean, however, it was reported that Monotaxis grandoculis (Forsskål, 1775) was the single species of Monotaxis in this area. We collected four M. heterodon specimens from the lagoon waters of Mischief Reef in South China Sea. A morphometric study was taken to confirm the occurrence of M. heterodon in the seawaters of the South China Sea and thoroughly separate them from M. grandoculis. In addition, DNA barcoding was taken for the classification of specimens. The mean genetic distance within M. heterodon group was 0.24 percentage points, group mean distance between M. heterodon and M. grandoculis was 8.71 percentage points. The phylogenetic analysis confirmed the existence of M. heterodon in the lagoon waters of the South China Sea. This study will contribute to species identification within this genus distributed in the South China Sea.

An illustrated catalogue of the South American species of the cyphophthalmid family Neogoveidae (Arthropoda, Opiliones, Cyphophthalmi) with a report on 37 undescribed species

Zootaxa ◽  
2007 ◽  
Vol 1509 (1) ◽  
pp. 1-15 ◽  
Author(s):  
LIGIA BENAVIDES ◽  
GONZALO GIRIBET
Keyword(s):  
Trinidad And Tobago ◽  
French Guiana ◽  
Single Species ◽  
Sampling Effort ◽  
South American ◽  
Undescribed Species ◽  
The South ◽  
South American Species

We provide an illustrated catalog of the cyphophthalmid diversity of the Neotropics, including photographs of the holotypes and paratypes (when available) for all but one described South American Neogoveidae. These include the single species of Huitaca, two of the three Metagovea species, the four Neogovea species and ? Gen. enigmaticus. Furthermore we provide collecting data for 37 undescribed species of south American Neogoveidae, including Huitaca (8 spp.), Neogovea (12 spp.) and Metagovea (17 spp.). Distributional data of the species of Neogoveidae add the first records for French Guiana, Peru, Suriname, Trinidad and Tobago, and Venezuela. Colombia shows the largest diversity of Cyphophthalmi among South American countries, perhaps due to the large amount of ecosystems found in this country, but this could also reflect sampling effort.

Distribution of phytoplankton community in Kotor Bay (south-eastern Adriatic Sea)

2012 ◽  
Vol 7 (3) ◽  
pp. 470-486 ◽  
Author(s):  
Dragana Drakulović ◽  
Branka Pestorić ◽  
Mirko Cvijan ◽  
Slađana Krivokapić ◽  
Nenad Vuksanović
Keyword(s):  
Phytoplankton Community ◽  
Adriatic Sea ◽  
Sampling Period ◽  
Single Species ◽  
Chemical Parameters ◽  
The South ◽  
Phytoplankton Assemblages ◽  
South Eastern ◽  
Physico Chemical ◽  
Shallow Coastal Area

AbstractThe goal of this paper was to explain variability of phytoplankton in a shallow coastal area in relation to physico-chemical parameters. Temporal variability and composition of phytoplankton were investigated in the Kotor Bay, a small bay located in the south-eastern part of the Adriatic Sea. Samplings were performed weekly from February 2008 to January 2009 at one station in the inner part of the Kotor Bay, at five depths (0 m, 2 m, 5 m, 10 m, 15 m). Phosphates, nitrites and nitrates ranged from values under the level of detection to the maximum values of 1.54, 1.53 and 23.91 µmol l−1, respectively. The phytoplankton biomass — represented by chlorophyll a concentration — ranged from 0.12 to 6.78 mg m−3, reaching a maximum in summer. Diatoms were present throughout the whole sampling period, reaching the highest abundance in March (3.42×105 cells l−1at surface). The peak of dinoflagellates in July (2.2×106 cells l−1 at surface) was due to a single species, Prorocentrum micans. The toxic dinoflagellate Dinophysis fortii occurred at a concentration of 2140 cells l−1 in May. The present results of phytoplankton assemblages and distribution provide valuable information for this part of the south-eastern Adriatic Sea where data is currently absent.

scholarly journals Weeds in the Southern Trans-Urals

2021 ◽  
Vol 20 (1) ◽  
pp. 433-436
Author(s):  
A. S. Tretyakova ◽  
P. V. Kondratkov
Keyword(s):  
Species Composition ◽  
Single Species ◽  
Alien Plants ◽  
The South ◽  
Weed Species ◽  
High Coverage ◽  
High Occurrence ◽  
Field Crops ◽  
Highly Active ◽  
Segetal Flora

The analysis of weed species composition in the Southern Trans-Urals was presented. The studied segetalflora included 127 species, 91 genera and 26 families. The most multi-species families were Asteraceae (23 species), Brassicaceae (14 species), Fabaceae and Poaceae (13 species). The most multi-species genera were Artemisia, Brassica and Vicia.The single-species genera in the segetal flora of the South Trans-Urals was up to 73 %. The amount of alien plants was 58%. We classified 11 species as highly active weeds. They had a high coverage (25–40 %), medium or high occurrence (inmore than 41 % of the surveyed field crops) and were found in all crops. Most weeds was inactive (103 species or 81 %).

scholarly journals Open ocean nocturnal insect migration in the Brazilian South Atlantic with comments on flight endurance

2018 ◽  
Author(s):  
Ruy J. V. Alves ◽  
Luíz A. V. Costa ◽  
Alexandre Soares ◽  
Nílber G. Silva ◽  
Ângelo P Pinto
Keyword(s):  
Wind Speed ◽  
Geographic Origin ◽  
Single Species ◽  
South Atlantic ◽  
Open Ocean ◽  
The South ◽  
Open Sea ◽  
Insect Migration

We report a nocturnal insect swarm observed aboard the oceanographic ship Cruzeiro do Sul of the Brazilian Navy, while conducting a survey of the Montague guyot (seamount), 389 km distant from the nearest land in the South Atlantic. The insects came from open sea towards the ship in all directions, attracted by powerful lighting of the deck. Except for one specimen, their provenance from another island or another ship were discarded. Most insects collided with the hull and fell into the ocean, but we managed to capture and determine seventeen (13 Hemiptera of a single species, three Lepidoptera and one Odonata). Considerations about the geographic origin and flight endurance of these insects are supported by the reconstruction of wind speed and direction provided by the crew of the ship and Hysplit modelling of air current trajectories.

scholarly journals First record of Monotaxis heterodon (Actinopterygii: Perciformes: Lethrinidae) from the lagoon waters of Mischief Reef, South China Sea

2021 ◽  
Vol 51 (3) ◽  
pp. 321-325
Author(s):  
Yu Zhao ◽  
Wenli Zhou ◽  
Binbin Shan ◽  
Yan Liu ◽  
Changping Yang ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Single Species ◽  
First Record ◽  
The South China Sea ◽  
Morphometric Study ◽  
The South ◽  
China Sea ◽  
Percentage Points

Monotaxis heterodon (Bleeker, 1854) is widespread in the Indo-Pacific Ocean, however, it was reported that Monotaxis grandoculis (Forsskål, 1775) was the single species of Monotaxis in this area. We collected four M. heterodon specimens from the lagoon waters of Mischief Reef in South China Sea. A morphometric study was taken to confirm the occurrence of M. heterodon in the seawaters of the South China Sea and thoroughly separate them from M. grandoculis. In addition, DNA barcoding was taken for the classification of specimens. The mean genetic distance within M. heterodon group was 0.24 percentage points, group mean distance between M. heterodon and M. grandoculis was 8.71 percentage points. The phylogenetic analysis confirmed the existence of M. heterodon in the lagoon waters of the South China Sea. This study will contribute to species identification within this genus distributed in the South China Sea.

scholarly journals Open ocean nocturnal insect migration in the Brazilian South Atlantic with comments on flight endurance

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7583
Author(s):  
Ruy J.V. Alves ◽  
Luíz A.A. Costa ◽  
Alexandre Soares ◽  
Nílber G. Silva ◽  
Ângelo P. Pinto
Keyword(s):  
Wind Speed ◽  
Geographic Origin ◽  
Single Species ◽  
South Atlantic ◽  
Open Ocean ◽  
The South ◽  
Open Sea ◽  
Insect Migration ◽  
Using Data

We observed a nocturnal insect swarm aboard the oceanographic ship Cruzeiro do Sul of the Brazilian Navy, while conducting a survey of the Montague guyot (seamount), 389 km distant from the nearest land in the South Atlantic. The insects came from open sea toward the ship from all directions, attracted by the powerful light of the deck. Most insects collided with the hull and fell into the ocean, but we managed to capture and determine 17 (13 Hemiptera of a single species, three Lepidoptera of three species and one Odonata). With one exception, we are certain that none of the specimens caught originated from the ship. The geographic origin, most likely the coast of Brazil, and flight endurance of these insects were inferred using data on wind speed and direction, provided by the crew of the ship, and were reconstructed using Hysplit modeling of air current trajectories.

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