scholarly journals The vertical distribution of phytal ostracods in the intertidal zone at Gore Point, Bristol Channel, U.K.

1982 ◽  
Vol 1 (1) ◽  
pp. 71-84 ◽  
Author(s):  
David J. Horne
Keyword(s):  
New Species ◽  
Vertical Distribution ◽  
Age Structure ◽  
Intertidal Zone ◽  
Life Cycles ◽  
Individual Species ◽  
Tidal Level ◽  
Percentage Composition ◽  
Annual Water ◽  
The Vertical Distribution

Abstract. The first detailed investigation of the vertical distribution of ostracods inhabiting intertidal algae is presented herein. A study was made of the ostracod faunas obtained from samples of Corallina collected at various levels along transects of the intertidal zone at Gore Point in the Bristol Channel. A total of 28 species were recorded, including four new species presently left in open nomenclature. Both the composition of the ostracod fauna and the population age structure of individual species were found to vary considerably according to tidal level. The development of instars apparently proceeds at a faster rate at higher tidal levels, probably due to higher mean annual water temperatures. Among the factors which may determine the percentage composition of the ostracod fauna at a given level are temperature, pH, and the life-cycles and migratory habits of individual species.

Ecology and behaviour of immature Culicoides melleus (Coq.) (Dipt., Ceratopogonidae)

1972 ◽  
Vol 62 (1) ◽  
pp. 113-127 ◽  
Author(s):  
J. R. Linley ◽  
G. M. Adams
Keyword(s):  
Intertidal Zone ◽  
Laboratory Experiments ◽  
High Tide ◽  
Time Of Day ◽  
Fourth Instar ◽  
Tidal Level ◽  
Sand Surface ◽  
Tide Level ◽  
The Vertical Distribution ◽  
Incoming Tide

The distribution of the larvae and pupae of Culicoides melleus (Coq.) in a natural beach habitat in an inlet on the Florida coast was studied in relation to tidal level and time of day. Larvae and pupae were confined to the intertidal zone and these distributions were unaffected by time of day or tidal level. Distributions of younger larval instars were displaced towards the inferred area of oviposition at higher elevations on the beach. Pupae were associated with the zone at and somewhat below high tide level. Differences in the vertical distribution of larvae between 0 and 2 in. deep between dark (pre-dawn)/low tide, morning/low tide and afternoon/low tide conditions were probably associated with larval response to light and heat.In laboratory experiments with a temperature gradient, second- to fourth-instar larvae preferred the 18–25°C range, but the fourth instars were the least discriminating. Laboratory experiments with a simulated beach showed that pupae flooded on an incoming tide remained in their burrows and immediately buried themselves more deeply when waves were generated in the water; they were able to return to the surface if buried, and survived drowning for four days. Inundated areas were avoided as pupation sites. The orientation of pupae at the sand surface and their formation in burrows was related to negative phototactic responses of the pupating larvae.

Annual and spatial variation of intertidal benthic community zonation in a breakwater off the Rio de Janeiro coast, south-eastern Brazil

2009 ◽  
Vol 89 (2) ◽  
pp. 225-234 ◽  
Author(s):  
Bruno Pereira Masi ◽  
Isabela Maria Macedo ◽  
Ilana Rosental Zalmon
Keyword(s):  
Vertical Distribution ◽  
Air Temperature ◽  
Benthic Community ◽  
Intertidal Zone ◽  
Rio De Janeiro ◽  
Exposure Condition ◽  
Benthic Assemblages ◽  
Air Exposure ◽  
The Vertical Distribution ◽  
Community Zonation

The present study aims to evaluate the vertical distribution of intertidal benthic organisms in different periods of the year, relating them to tide, air temperature, height and wave periodicity in breakwaters off the northern Rio de Janeiro State, and to compare the zonation at two sites (Pier and Barra) with distinct hydrodynamics, due to different wave swell. Quadrats of 400 cm2 were sampled by a photoquadrat method. The upper limit of the marine organisms was higher at the Barra site (intertidal zone of 3.8 m) than at the Pier site (intertidal zone of 2.2 m). The littoral fringe assemblage did not show significant differences between sites, but a larger range of this fringe and the upper eulittoral band at Barra was quite evident. This site was mostly characterized by species of more exposed areas such as Chaetomorpha sp. and Perna perna in the upper and lower eulittoral bands, and by C. teedii and Ulva fasciata in the sublittoral fringe. A seasonal difference was identified in the air exposure degree at the Pier site, which was higher in October 2005 and February 2006. The air temperature and wave height and periodicity differed significantly among the four studied periods. The typical seasonal species were F. clenchi (July 2005 and October 2005), Gigartina domingensis (July 2005), Grateloupia sp. (October 2005) and Porphyra acanthophora (October 2005 and February 2006). The intermediate benthic band of the intertidal zone occupied a narrow zone, changing its spatial location according to the season of the year. The hypothesis of annual variation of the benthic community zonation according to the seasonal variability of tides, air temperatures and wave's height and periodicity was accepted for the intermediate band of the intertidal zone, due to the taxonomic differences and the abundance of dominant species in the four seasons. The difference in the vertical distribution of the intertidal benthic assemblages of both breakwaters highlights a distinct wave exposure condition, and reflects the breakwaters' orientation and the wave swell at each site.

Notes stratigraphiques et paleontologiques sur la region du Dj. Ouenza (Algerie) (Aptien, Albien, Cenomanien)

1949 ◽  
Vol S5-XIX (1-3) ◽  
pp. 205-221 ◽  
Author(s):  
Georges Dubourdieu ◽  
J. Sigal
Keyword(s):  
New Species ◽  
Vertical Distribution ◽  
Mountain Region ◽  
Two New Species ◽  
The Vertical Distribution ◽  
Ammonite Zones

Abstract Describes the stratigraphic subdivisions and fauna of the Aptian to Cenomanian (Cretaceous) formations of the Ouenza mountain region, Algeria. Correlation of the vertical distribution of foraminifers with successive ammonite zones permitted identification of certain of the foraminifers as index microfossils. Descriptions of the Cenomanian ammonite Flickia rudelli n.sp. and two new species of foraminifers, Epistomina colomi and E. scala, are included.

From the depths: Heterocaucaseuma deprofundum sp. nov., the world's deepest-occurring millipede (Diplopoda, Chordeumatida, Anthroleucosomatidae) from caves in the western Caucasus

Zootaxa ◽  
2018 ◽  
Vol 4377 (1) ◽  
pp. 110 ◽  
Author(s):  
DRAGAN Ž. ANTIĆ ◽  
ILYA S. TURBANOV ◽  
ANA SOFIA P.S. REBOLEIRA
Keyword(s):  
New Species ◽  
Vertical Distribution ◽  
Western Caucasus ◽  
Ecological Information ◽  
The Western Caucasus ◽  
The Vertical Distribution

We describe a new anthroleucosomatid millipede, Heterocaucaseuma deprofundum sp. nov., found in the second and third deepest caves of our planet, Krubera-Voronja and Sarma, in Abkhazia, western Caucasus. A brief discussion on its taxonomy and relationships within the Caucaseuma complex and genus Heterocaucaseuma is provided, together with new faunistic records on other three species of Heterocaucaseuma. Notes on the distribution and troglomorphy of the genus Heterocaucaseuma are added. Ecological information and data on the subterranean community of the Krubera-Voronja Cave are updated. We also discuss the vertical distribution of the new species in caves and the presence of an ectoparasitic fungi of the order Laboulbeniales. This new species is currently the world's deepest-occurring millipede, also representing one of the largest known chordeumatidans. 

scholarly journals Coprophilous histerids (Coleoptera: Histeridae) of the Polish Carpathians

2017 ◽  
Vol 60 (1) ◽  
pp. 15-22
Author(s):  
Sławomir MAZUR ◽  
◽  
Andrzej GÓRZ ◽  
Adam BYK ◽  
◽  
...  
Keyword(s):  
Vertical Distribution ◽  
Individual Species ◽  
Polish Carpathians ◽  
The Vertical Distribution

The occurrence of coprophilous histerids in the Polish Carpathians was investigated. A total of 2,680 specimens, representing 11 species and 4 genera, were collected. The vertical distribution of individual species and their zoogeography was analysed.

scholarly journals Medusae of the Amsterdam mid North Atlantic Plankton Expeditions (1980-1983) with Description of Two New Species

1988 ◽  
Vol 58 (2) ◽  
pp. 227-258 ◽  
Author(s):  
J. Bleeker ◽  
S. van der Spoel
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
Vertical Distribution ◽  
North Atlantic ◽  
North Atlantic Ocean ◽  
Two New Species ◽  
The Vertical Distribution ◽  
Diurnal Migration

The medusa fauna of the mid North Atlantic Ocean between 24° and 55°N along approximately 30°W is studied. Two Hydromedusae new to science, Oceania tydemani and Annatiara lempersi, are described. The differences in fauna south and north of 42°N, and faunal borders near 50°, 48°, 45°, 35°, 30°, and 34°-37° N are discussed. The vertical distribution and for some species the diurnal migration and subtropical submergence are recorded.

scholarly journals The vertical distribution and abundance of Chthamalus stellatus Poli and Chthamalus montagui Southward (Crustacea, Cirripedia) at two localities of the Istrian peninsula coast (North Adriatic)

2017 ◽  
Vol 58 (1) ◽  
pp. 77-88
Author(s):  
Nataša Dolenc-Orbanić ◽  
Claudio Battelli
Keyword(s):  
Vertical Distribution ◽  
Adriatic Sea ◽  
Spatial Scales ◽  
Tidal Range ◽  
Rocky Shores ◽  
Tidal Level ◽  
The North ◽  
Chthamalus Montagui ◽  
The Vertical Distribution ◽  
North Adriatic Sea

Two species of chthamalid barnacles are well established from the upper to the lower limit of the midlittoral zone on the rocky shores of the North Adriatic Sea: Chthamalus stellatus, Poli and Chthamalus montagui, Southward. The present study deals with the vertical distribution and abundance for each species at two localities of the Istrian peninsula coast (North Adriatic Sea). For this purpose chthamalid populations were monitored in 2015 along the Slovenian marine coast (Bay of Koper, Gulf of Trieste) and along the Croatian marine coast, near Rovinj (west Istrian coast), both on limestone. The main aim of the study was to establish if there was a relationship between the vertical distribution and abundance of these two species at different spatial scales: small (between sites, about 1 kilometer) and large (between localities, 10s of kilometers). The selected localities are slightly different in tidal range, in orientation and wave exposure. Three sites were randomly selected at each locality and two transects per tidal level (upper, middle and lower) were chosen on each site. The abundance of each chthamalids species in 1 dm2 plots was determined at three different tidal levels along each transect. The results indicated that the vertical distribution of C. montagui and C. stellatus was very similar between localities and even among sites, but their abundance varied. At both localities, C. montagui was more abundant in the upper and middle tidal levels, while C. stellatus was more abundant at the lower tidal level. It was also found that C. montagui was more abundant in sheltered conditions (Bay of Koper), while C. stellatus on the coast more exposed to the wave action (near Rovinj), at all tidal levels.

scholarly journals Vi. Contributions to the knowledge of lower carboniferous plants. - Part III. - On the fossil-flora of the black limestones in Teila Quarry, Gwaenysgor, near Prestatyn, Flintshire, with special references to Diplopteridium teilianum KIDSTON sp. (gen, nov.) and some other fern-like fronds

1931 ◽  
Vol 219 (462-467) ◽  
pp. 347-379 ◽  
Keyword(s):  
New Species ◽  
Vertical Distribution ◽  
Fossil Flora ◽  
Fossil Plants ◽  
Large Collection ◽  
Lower Carboniferous ◽  
Small Collection ◽  
The Vertical Distribution ◽  
Carboniferous Limestone

Kidston (1889) described a small collection of fossil-plants from the Black Limestones exposed in a quarry at Teilia Farm close to Gwaenysgor, a village lying about one mile South of Prestatyn in Flintshire. From the vertical distribution elsewhere of the species found at Teilia he concluded that the flora was of Lower Carboniferous Age and that it compared more closely with the flora of the Calciferous Sandstone Series than with that of the Carboniferous Limestone Series of the Lower Carboniferous Succession of the Scottish and Northumberland area. In 1924 I found on visiting the quarry that the plant-bearing beds were still fairly accessible, although the quarry had not been worked for many years and was considerably overgrown with vegetation. With the grant kindly placed at my disposal by this Society, I had the beds opened up and obtained a fairly large collection of fossil-plants and animals. This collection enables me to add considerably to the list of species recorded by Kidston in 1889 and to extend our knowledge of the morphology of several plants of Lower Carboniferous Age. Several new species were found and descriptions of these will be given.

scholarly journals Yalongaphaenops erwini gen. et sp. nov., the world’s most high-altitude hypogean trechine beetle from China (Coleoptera, Carabidae, Trechinae)

ZooKeys ◽  
2021 ◽  
Vol 1044 ◽  
pp. 197-220 ◽  
Author(s):  
Igor A. Belousov ◽  
Ilya I. Kabak
Keyword(s):  
New Species ◽  
Vertical Distribution ◽  
High Altitude ◽  
Male Genitalia ◽  
New Genus ◽  
Carabid Beetle ◽  
New Taxon ◽  
Forest Zone ◽  
Upper Limit ◽  
The Vertical Distribution

A new genus and new species of carabid beetle, Yalongaphaenops erwinigen. et sp. nov., is described from mountains SW of Mianning City, Sichuan Province, China. This finding, from one side, extends the known distribution of Chinese hypogean trechines, and from another, it raises the upper limit of their vertical distribution to nearly 4000 m. Photographs of the habitus and major taxonomic characters, including the male genitalia, right mandible, and microsculpture patterns of the integument are supplied. The type locality of the new taxon is mapped. Yalongaphaenopsgen. nov. shows some similarities with the genus Shiqianaphaenops Tian, 2016 from eastern Guizhou and the genus Boreaphaenops Uéno, 2002 described from Hubei, China. However, the direct relationships of the new genus remain unclear. Further new discoveries of hypogean trechines in Sichuan are necessary to evaluate possible variation of major characters in allied taxa. Although Y. erwinisp. nov. was collected at an elevation exceeding 3800 m a.s.l., it conforms to the upper limit of the forest zone being approximately on par with the vertical distribution of some high altitude hypogean trechine species in other parts of the globe.

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