Earliest Arenig radiolarians from the Cow Head Group, Western Newfoundland

2011 ◽  
Vol 85 (1) ◽  
pp. 156-177 ◽  
Author(s):  
Mun-Zu Won ◽  
William J. Iams
Keyword(s):  
Species Composition ◽  
Mass Extinction ◽  
National Park ◽  
Head Group ◽  
Shell Wall ◽  
Faunal Assemblages ◽  
Significant Difference ◽  
The Family ◽  
Characteristic Features ◽  
Phylogenetic Evolution

Radiolarians have been recovered from lowermost Arenigian rocks of the Cow Head Group in Gros Morne National Park, Newfoundland. Two new faunal assemblages include eight families, 13 genera, and 25 species. Among these, the family Neoaspiculumidae, the genus Neoaspiculum, and 11 species, Beothuka aitchisoni, B. grosmornensis, B. stougei, B.? stellata, Neoaspiculum cancellium, N. headense, N. transformum, N. laxum, N.? amplum, Proventocitum cylindricum, and P. piriforme, are new.This study elucidates the reason for the significant difference in species composition between pre-Arenigian and Arenigian radiolarian faunas. This difference does not appear to be due to mass extinction, but rather to phylogenetic evolution: most radiolarian families that flourished during pre-Arenig time were gradually but significantly reduced by the earliest Arenig. Characteristic features of the earliest Arenig assemblages that distinguish them from their Tremadocian predecessors are 1) the development of a distinctive skeletal constructional element referred to as “bandage” structure that evolved through modification of a mesh of thin bars and 2) the appearance of multiple concentric shells including a proloculus (or a microsphere), which developed from a primitive three-dimensionally interwoven meshwork or spongy shell wall. These forms, represented by beothukids, antygoporids, and inaniguttids, are rare but they appear to originate in the earliest Arenig. Transitional characteristics among those forms are developed in the Neoaspiculumidae, which flourished during the earliest Arenig.The precise biostratigraphic age of one of the assemblages was determined with the recovery of the index condont Prioniodus adami Stouge and Bagnoli, 1988 from strata belonging to the Tetragraptus approximatus Graptolite Zone, which is at the base of the Arenigian.

scholarly journals Investigation on Species Composition of Plant Community at Tad Xai at Phou Khao Khouay National Park, Lao PDR

Our Nature ◽  
2013 ◽  
Vol 11 (1) ◽  
pp. 1-10 ◽  
Author(s):  
Metmany Soukhavong ◽  
Liu Yong ◽  
Khamseng Nanthavong ◽  
Jérôme Millet
Keyword(s):  
Species Composition ◽  
Plant Community ◽  
National Parks ◽  
National Park ◽  
Lao Pdr ◽  
Canopy Cover ◽  
Tree Height ◽  
Species Number ◽  
Crown Cover ◽  
Significant Difference

Phou Khao Khouay (PKK) National Park is one of the 21 National Parks in Lao PDR that supports high biodiversity. The plant community was represented by 62 families, 145 species and 1,221 tree size individuals in 50×50 m2 plots. The largest species in terms of individual number were Hydnocarpus ilicifolia, Hopea spp. and the largest families in terms of species number were Rubiaceae and Dipterocarpaceae. A total 24 families, 33 species and 91 sapling individuals were found in the 10×10 m2 sapling plots, the largest species were Rinorea boissieui, Ailanthus triphysa and Hopea spp. and the largest families were Dipterocarpaceae and Myrtaceae. In the seedling quadrat, there were 88 families, 153 species and 1,586 seedling size individuals in 2×2 m2 plots, the largest species were Hopea spp., Hopea ferrea and spp. (leguminoceae), the largest families were Rubiaceae, Annonaceae and Dipterocarpaceae. Diversity was found very high in tree and seedling was significantly higher than that of sapling, but no significant difference between tree and seedling. The largest tree height and maximum mean diameter at breast height (DBH) belonged to the family of Dipterocarpaceae. Canopy cover of Diperocarpaceae was highest (35%) in study area. Lauraceae and other 6 families had lowest crown cover around 5%. The result of this study indicated the pattern of species composition in plant community assembly and density, diversity, abundance for the vegetation layers.DOI: http://dx.doi.org/10.3126/on.v11i1.8237 Our Nature Vol.11(1) 2013: 1-10

scholarly journals Species Composition and Diurnal Activity Rhythm of Tabanids (Diptera: Tabanidae) at the Ivindo National Park and Its Environs

2019 ◽  
pp. 1-7
Author(s):  
Affiri Odzame Joseph-Marie ◽  
Sevidzem Silas Lendzele ◽  
Zinga Koumba Christophe Roland ◽  
Mounioko Franck ◽  
Koumba Armel Aubin ◽  
...  
Keyword(s):  
Species Composition ◽  
Activity Pattern ◽  
Rainy Season ◽  
National Park ◽  
Secondary Forest ◽  
Activity Rhythm ◽  
Biosphere Reserve ◽  
Diurnal Activity ◽  
Significant Difference ◽  
The Village

An entomological prospection to show the species composition and diurnal activity of tabanids was carried out using 15 Vavoua traps, during the rainy season (25th Sept-5th Oct and 21st Oct-9th Nov 2018), in the secondary forest [Ivindo National Park (INP)] and Village-Town sites in and around the biosphere reserve Ipassa-IRET Makokou in Gabon. In total, 839 tabanids were caught with 747 recorded at INP and regrouped under 11 species of the genus Tabanus [T. taeniola (57.76%),               T. ricardae (26.32%), T. par (5.54%), T. ruficrus (3.74%), T. socius (3.74%), T. disjunctus (2.49%), T. marmorosus (0.28%) and T. obscurehirtus (0.14%)]. However, two species of the genus Chrysops [C. dimidiatus (70.83%) and C. silaceus (29.17%)] and one species of the genus Haematopota [H. pluvialis (100%)] were only identified at INP. While in the Village-Town sites, 92 tabanids were caught and regrouped under five species of the genus Tabanus [T. ruficrus (14.13%), T. taeniola (9.78%), T. ricardae (73.91%), T. par (1.09%), and T. marmorosus (1.09%)]. Tabanids were more abundant in the forest (7.12 tabanid/trap/day) as compared to the Village-Town (0.77 t/t/d) with a statistically significant difference (P<0.05). At INP, tabanids showed a unimodal activity pattern with peak attained between 12-14H and in the anthropized milieu (14-16H) and dominated by females.

Late Cambrian radiolarian faunas and biostratigraphy of the Cow Head Group, western Newfoundland

2002 ◽  
Vol 76 (1) ◽  
pp. 1-33 ◽  
Author(s):  
Mun-Zu Won ◽  
William J. Iams
Keyword(s):  
Carbonate Rocks ◽  
National Park ◽  
The Other ◽  
Taxonomic Position ◽  
Head Group ◽  
New Genera ◽  
Faunal Assemblages ◽  
Green Point ◽  
Late Cambrian ◽  
The Difference

Well-preserved Late Cambrian radiolarian faunas were recovered from carbonate rocks of the Cow Head Group of the Great Northern Peninsula of the island of Newfoundland, Canada. Several different faunal assemblages were recognized from three strata at Green Point, one from a stratum at Martin Point, and three from strata at Broom Point South in Gros Morne National Park. The faunas contain nine genera, five of which are new, and 33 species, all but two of which are new. The five new genera are Curvechidnina, Grosmorneus, Pararcheoentactinia, Ramuspiculum, and Subechidnina. Most of the genera belong to the families Archeoentactinidae, Echidninidae, Palaeospiculumidae, and Protoentactiniidae; a few taxa have an uncertain taxonomic position. Echidnina, whose taxonomic identity was uncertain, is shown to be a radiolarian.The diversity of each of these faunas is similar, but the difference in faunal compositions among the faunas examined is distinct. From this analysis, the Late Cambrian strata between Martin Point and Green Point can be more precisely correlated, and the previous correlation has been revised. With the recovery of the conodonts in this study, the provisionally placed boundary between the Franconian and Trempealeauan at Martin Point by earlier researchers is revised and positioned between unit 30 and unit 31.The biostratigraphic range of the co-occurring conodonts indicates that the youngest fauna described in this paper belongs to the Eoconodontus notchpeakensis Zone of late Trempealeauan age and that the other faunas (from Martin Point and Green Point) are of Franconian age.

Lentibulariaceae from the Viruá National Park in the northern Amazon, Roraima, Brazil

Phytotaxa ◽  
2016 ◽  
Vol 258 (1) ◽  
pp. 1 ◽  
Author(s):  
Suzana Maria Costa ◽  
Volker Bittrich ◽  
Maria do Carmo Estanislau Do Amaral
Keyword(s):  
Species Composition ◽  
Geographic Distribution ◽  
National Park ◽  
Close Similarity ◽  
Guiana Shield ◽  
Floristic Survey ◽  
Number Of Species ◽  
The Family ◽  
Species Descriptions ◽  
New Occurrences

Lentibulariaceae is the family with the second highest number of species in the Viruá National Park (VNP) according to a recent floristic survey of the aquatic and palustrine angiosperms there. The aim of the present study is to provide identification material and information on those species of Lentibulariaceae. Species descriptions were based on recent vouchers collected by the authors and previous collections deposited in various herbaria. We present keys, brief descriptions and images, comments on morphology and the geographic distribution of three species of Genlisea and 22 species of Utricularia. The eight new occurrences raise the number of known species for the family in Roraima to 39. The species composition of the Lentibulariaceae in VNP shows a close similarity with that one of the family on the Guiana Shield.

The dynamics of changes in the structure and species composition of primary forest stands in selected areas of Pieniny National Park

2011 ◽  
Vol 72 (4) ◽  
pp. 339-356 ◽  
Author(s):  
Andrzej Jaworski ◽  
Dorota Jakubowska
Keyword(s):  
Species Composition ◽  
National Park ◽  
Primary Forest ◽  
Forest Stands

Dynamika zmian budowy, struktury i składu gatunkowego drzewostanów o charakterze pierwotnym na wybranych powierzchniach w Pienińskim Parku Narodowym

scholarly journals The Wadden Sea as a National Park and UNESCO World Heritage Site: Students’ Word Associations with These Two Conservation Designations

2021 ◽  
Vol 13 (14) ◽  
pp. 8006
Author(s):  
Till Schmäing ◽  
Norbert Grotjohann
Keyword(s):  
National Parks ◽  
National Park ◽  
Wadden Sea ◽  
World Heritage ◽  
World Heritage Site ◽  
Unesco World Heritage ◽  
Word Associations ◽  
Heritage Site ◽  
Unesco World Heritage Site ◽  
Significant Difference

The Wadden Sea ecosystem is unique in many respects from a biological perspective. This is one reason why it is protected by national parks in Germany and by its designation as a UNESCO World Heritage Site. In biology didactics, there are only a few studies that focus on the Wadden Sea. This work investigates students’ word associations with the two stimulus words “national park” and “UNESCO World Heritage Site”. The survey was conducted among students living directly at the Wadden Sea and among students from the inland. The analysis of the identified associations (n = 8345) was carried out within the framework of a quantitative content analysis to be able to present and discuss the results on a group level. A statistically significant difference was found between the two groups. Overall, results showed that the students made subject-related associations as well as a large number of associations to both stimulus words that could be judged as non-subject-related. In some cases, a connection with the region of residence could be found, but this was not generally the case. Even students’ immediate residential proximity to the Wadden Sea is no guarantee that they have knowledge of the two considered protection terms.

Description of a new species of Auriculostoma (Digenea: Allocreadiidae) from Characidium heirmostigmata (Characiformes: Crenuchidae) from Argentina, using morphological and molecular data

2021 ◽  
Vol 95 ◽  
Author(s):  
M.M. Montes ◽  
J. Barneche ◽  
Y. Croci ◽  
D. Balcazar ◽  
A. Almirón ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
National Park ◽  
Molecular Data ◽  
Rrna Gene ◽  
28S Rrna ◽  
The Family ◽  
Parasitological Survey ◽  
Morphological And Molecular Data ◽  
A New Species

Abstract During a parasitological survey of fishes at Iguazu National Park, Argentina, specimens belonging to the allocreadiid genus Auriculostoma were collected from the intestine of Characidium heirmostigmata. The erection of the new species is based on a unique combination of morphological traits as well as on phylogenetic analysis. Auriculostoma guacurarii n. sp. resembles four congeneric species – Auriculostoma diagonale, Auriculostoma platense, Auriculostoma tica and Auriculostoma totonacapanensis – in having smooth and oblique testes, but can be distinguished by a combination of several morphological features, hosts association and geographic distribution. Morphologically, the new species can be distinguished from both A. diagonale and A. platense by the egg size (bigger in the first and smaller in the last); from A. tica by a shorter body length, the genital pore position and the extension of the caeca; and from A. totonacapanensis by the size of the oral and ventral sucker and the post-testicular space. Additionally, one specimen of Auriculostoma cf. stenopteri from the characid Charax stenopterus (Characiformes) from La Plata River, Argentina, was sampled and the partial 28S rRNA gene was sequenced. The phylogenetic analysis revealed that A. guacurarii n. sp. clustered with A. tica and these two as sister taxa to A. cf. stenopteri. The new species described herein is the tenth species in the genus and the first one parasitizing a member of the family Crenuchidae.

Forgiveness in Relation to Attachment Style and Consanguine Marriage in Iranian Married Individuals

2012 ◽  
Vol 110 (2) ◽  
pp. 489-500 ◽  
Author(s):  
Shahriar Shahidi ◽  
Behnaz Zaal ◽  
Mohammad Ali Mazaheri
Keyword(s):  
Sex Differences ◽  
Attachment Style ◽  
Adult Attachment ◽  
Family Of Origin ◽  
Married Couples ◽  
Significant Difference ◽  
The Family ◽  
Married Individuals

The aim of this study was to compare forgiveness in secure and insecure Iranian married couples. Whether marriage had occurred within the family (consanguine) or not (non-consanguine) was also considered. 400 married participants completed the Family Forgiveness Scale and the Adult Attachment Questionnaire. Analysis of reported forgiveness within the marital family showed that, although there was no significant difference between secure and insecure participants in overall forgiveness, secure participants rated “reparation” and “resolution” higher, whereas insecure participants rated “realization” and “recognition” higher. Comparing the experience of forgiveness in the family of origin, securely attached couples not only reported significantly more overall forgiveness but reported more “realization” and “resolution” while forgiving. Some interesting sex differences were also found, as individuals in consanguine vs non-consanguine couples differed in mean “recognition” in the forgiveness process.

Family burden and quality of life of mothers of children and adolescents with mental retardation or borderline mental capacity

2016 ◽  
Vol 33 (S1) ◽  
pp. S192-S192
Author(s):  
L. Utas Akhan
Keyword(s):  
Quality Of Life ◽  
Children And Adolescents ◽  
Mental Capacity ◽  
World Health ◽  
Family Burden ◽  
Disabled Children ◽  
World Health Organization Quality ◽  
Significant Difference ◽  
The Family

IntroductionStudies have found that the cognitive function levels of intellectually challenged children add a burden to the family and affect quality of life.ObjectivesThe purpose of this study was to determine the family burden felt by mothers of children, ages 6–16, whose mental capacity evaluation indicates an IQ of 35–79 to explore the mother's quality of life and discover the factors that yield an impact in this context.AimsThe main objective of this study therefore was to ascertain the family burden and quality of life experienced by the parents of children with mentally retarded or borderline mental capacity.MethodsThe WISC-R test was used in the research to determine the intellectual capacity of children, 6–16 years of age. The sample comprised 131 children and adolescents between the ages 6–16 with IQs in the interval of 35–79 and their mothers. The parents accompanying their children were assessed using the Family Burden Assessment Scale, the World Health Organization Quality of Life instrument and a sociodemographic questionnaire that was filled out during face-to-face interviews.ResultsThe quality of life of the mothers was found to be average. At the same time, as the IQ level of the children went up, the less the mothers felt they were under a family burden. It was seen that the mothers experienced the most difficulty in the domains of “perception of inadequacy” and “emotional burden.”ConclusionMothers with intellectually disabled children need psychosocial support. Providing all members of the family with counseling services to help them cope with the issues and responsibilities involved in the care of disabled children may make a significant difference in quality of life.Disclosure of interestThe author has not supplied his/her declaration of competing interest.

Effects of collection zones and storage on hatchability and survival of feral helmeted guineafowl (Numida meleagris galleata pallas) eggs

2021 ◽  
Vol 18 (1) ◽  
pp. 74-81
Author(s):  
A.A. Yusuf ◽  
O.A. Jayeola ◽  
I.O.O. Osunsina ◽  
G.A. Dedeke
Keyword(s):  
National Park ◽  
Captive Breeding ◽  
Storage Systems ◽  
Ecological Zones ◽  
Numida Meleagris ◽  
Significant Difference ◽  
In Captivity ◽  
Protein Supply ◽  
And Storage ◽  
Kainji Lake

The desire to shore up the shortfall in protein supply, the increased awareness of the importance of cholesterol free animal protein, like guineafowl, and the need to conserve their wild genes, have necessitated studies on improved captive breeding of feral helmeted guineafowl. Hence, this study was aimed at determining the effects of ecological zones and storage systems on the guineafowl eggs. Guineafowl eggs (n=214), were collected from identified and monitored-nests within the Kainji Lake National Park (KLNP) and Old Oyo National Park (OONP). Out of 91 eggs collected from KLNP, 32 and 38 were stored at room temperature (RT-21-25°C) and refrigerator (RF-17-20°C), respectively for five days prior to incubation while 21 eggs were not stored (NS-27-29°C), and out of 123 collected from OONP, 70 and 19 were stored for five days prior to incubation at (RT-21-25°C) and (RF-17-20°C), respectively while 34 eggs were (NS- 27-29°C). Prior to incubation, eggs were weighed, the height and width were measured. The process was repeated after incubation for unhatched eggs. Candling was done three days before hatching at day 29 of egg incubation. Embryo status of unhatched eggs was determined by cracking the eggs. Descriptive and inferential statistics were used to analyse the data. The NS eggs from Kainji (7.60%) and Oyo (2.01%) had the lowest percentage shrinkage in weight across the three storage systems. The order was reversed in height with RF eggs from Kainji (0.96%) and Oyo (0.46%) having lowest. The least shrinkage in width of eggs from Oyo was recorded in the RF eggs (0.00%) and in NS (0.59%) from Kainji. Eggs candling showed that presumed fertile (opaque) was highest (69.10%) in NS eggs followed by RT (45.00%). There was no significant difference (p>0.05) between the hatchability of eggs from the two parks though hatchability (7.60%) of Kainji eggs was higher than those of Oyo (7.40%). Further check on fertilization after incubation showed that RT (37.50%) eggs from Kainji were fertilized but were unable to hatch alive so also was RF eggs (21.10%). The study showed that the eggs sizes vary with ecozones while size of the eggs and storage systems affects hatchability and survival of feral helmeted guineafowl eggs in captivity. Keywords: Guineafowl; ecozones; storage systems; incubation; candling; hatchability

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