Journal articles: 'Eastern Cape coast'

1

Stewardson, C. L., and H. J. Fourie. "ENDOPARASITES OF THE CAPE FUR SEALARCTOCEPHALUS PUSILLUS PUSILLUSFROM THE EASTERN CAPE COAST OF SOUTH AFRICA." Transactions of the Royal Society of South Africa 53, no. 1 (January 1998): 33–51. http://dx.doi.org/10.1080/00359199809520372.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Volodina, A. A. "On findings of the red alga Gaillona rosea (Roth) Athanasiadis (Rhodophyta) in the Russian part of the South-Eastern Baltic." Marine Biological Journal 4, no. 2 (June 24, 2019): 111–14. http://dx.doi.org/10.21072/mbj.2019.04.2.12.

Full text

Abstract:

Information on the first findings of Gaillona rosea (Roth) Athanasiadis 2016:814 (Aglaothamnion roseum (Roth) Maggs & L’Hardy-Halos 1933:522) in the Russian part of the South-Eastern Baltic is given. Samples of algae in the Russian part of the South-Eastern Baltic along the coast of the Kaliningrad region at depths of 1–15 m were collected by diving method on the north coast of the Sambian Peninsula near Cape Taran and Cape Gvardeysky at the stations confined to hard ground. First samples of G. rosea collected from drifting mats of perennial algae Furcellaria lumbricalis and Polysiphonia fucoides were first registered along the west and north coast of the Sambian Peninsula (Cape Taran) at depths of 1.5–7 m in autumn 2015. The finding of the species in 2015 on the west coast of the Sambian Peninsula is the first registration for the coast of the Gdansk Bay. In July 2016, the species was found in samples at Cape Taran at a depth of 0.5 m. The length of the thalli does not exceed 3 cm. The species was registered with F. lumbricalis and P. fucoides, both in attached communities and in drifting mats. G. rosea is quite common in the Baltic Sea, with the exception of the Gdansk Bay and the northernmost part of the Baltic Sea, where the salinity is low. There is no data available on the abundance of the species in the adjacent Lithuanian waters. The species is rarely registered in the Russian part of the South-Eastern Baltic, and therefore G. rosea is rare in the entire South-Eastern Baltic Sea.

APA, Harvard, Vancouver, ISO, and other styles

3

Hoppe-Speer, Sabine C. L., Janine B. Adams, and Dylan Bailey. "Present state of mangrove forests along the Eastern Cape coast, South Africa." Wetlands Ecology and Management 23, no. 3 (December 11, 2014): 371–83. http://dx.doi.org/10.1007/s11273-014-9387-x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Stewardson, C. L. "PRELIMINARY INVESTIGATIONS OF SHARK PREDATION ON CAPE FUR SEALSARCTOCEPHALUS PUSILLUS PUSILLUSFROM THE EASTERN CAPE COAST OF SOUTH AFRICA." Transactions of the Royal Society of South Africa 54, no. 2 (January 1999): 191–203. http://dx.doi.org/10.1080/00359199909520624.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

PERKINS, PHILIP D. "New species and new collection records of Prosthetopine water beetles from southern Africa (Coleoptera: Hydraenidae)." Zootaxa 1864, no. 1 (September 3, 2008): 1. http://dx.doi.org/10.11646/zootaxa.1864.1.1.

Full text

Abstract:

New species of Hydraenidae are described in the genera Prosthetops Waterhouse (1), Pterosthetops Perkins (1), Parasthetops Perkins & Balfour-Browne (13), and Mesoceration Janssens (24). New collecting locality data are given for the following species described by Perkins & Balfour-Browne (1994): Parasthetops aeneus, P. nigritus, P. spinipes, P. curidius, Mesoceration distinctum, M. rivulare, M. jucundum, M. splendorum, M. rubidum, M. fusciceps, M. languidum, M. dissonum, M. rufescens, and M. brevigranum. High resolution digital images of the holotypes of new species are presented (online version in color), and male genitalia are illustrated. Distribution maps are provided for all prosthetopine species in the genera Prosthetops, Pterosthetops, Parasthetops, and Mesoceration. The following 39 new species are described (type locality in South Africa unless otherwise given): Prosthetops gladiator (Eastern Cape Province, summit of Prentjiesberg); Pterosthetops hawequas (Western Cape Province, Hawaquas radio tower); Parasthetops benefossus(Western Cape Province, Wiedouw farm), P. buunicornus (Lesotho: Drakensberg, Sani Pass Valley), P. confluentus (Eastern Cape Province, Little Karroo, Baviaanskloof N valley), P. lemniscus (Lesotho: Drakensberg, Sani Pass Valley), P. namibiensis (Namibia: Windhoek, Eros Mt.), P. pampinus (Western Cape Province, Dorps River into Prins Albert, Swartbergpas), P. parallelus (Northern Cape Province, Richtersveld, Oemsberg), P. propitius (Lesotho: Drakensberg, Sani Pass Valley), P. retinaculus (Eastern Cape Province, Sundays River system, Letskraal), P. sebastiani (Lesotho: Drakensberg, Sani Pass Valley), P. semiplanus (Eastern Cape Province, Sundays River system, Letskraal), P. striatus (Northern Cape Province, Namaqualand, Kamieskroon), P. unicornus (Eastern Cape Province, Naudes Nek, 12 miles ENE Rhodes); Mesoceration barriotum (Western Cape Province, Cape-Swartberg, Seweweekspoort Kloof), M. bicurvum (Eastern Cape Province, Wildebees River), M. bispinum (KwaZulu-Natal Province, Weza, Impetyene Forest), M. compressum (Eastern Cape Province, S. coast, Dwesa forest reserve), M. concavum (Mpumalanga Province, Blyderiver Canyon), M. curvosum (KwaZulu-Natal Province, Umtamvuna River), M. disjunctum (Eastern Cape Province, Nature's Valley Reserve), M. drakensbergensis (Lesotho, Drakensberg, Sani Pass Valley), M. durabilis (Western Cape Province, 2 miles SW of Citrusdal), M. granulovestum (Western Cape Province, Cederberg, Eikenboom), M. incarinum (Lesotho, Drakensberg, Sani Pass Valley), M. integer (KwaZulu-Natal Province, Busheladi Stream on Lundy's Hill near Deepdale), M. littlekarroo (Western Cape Province, Little Karroo, Rus-en-vredewaterf), M. longipennis (Western Cape Province, W. Wiedouw farm), M. maluti (Lesotho, Drakensberg, Sani Pass Valley), M. natalensis (KwaZulu-Natal Province, Umkomaas River, where crossed by Himeville to Impendhle road), M. periscopum (Western Cape Province, Cederberg, Eikenboom), M. piceum (Western Cape Province, Cederberg, Eikenboom), M. rapidensis (Western Cape Province, S. W. Cape Mts., Hawequas SE), M. repandum (Western Cape Province, Cederberg, Eikenboom), M. reticulatum (Western Cape Province, Nuweberg Forest Station), M. semicarinulum (Western Cape Province, Groot Toren farm), M. tabulare (Western Cape Province, Platteklip Gorge, north face of Table Mountain), M. umbrosum (Western Cape Province, Wiedouw farm).

APA, Harvard, Vancouver, ISO, and other styles

6

Marshall, Harold G., and Myra S. Cohn. "Phytoplankton distribution along the eastern coast of the USA. Part VI. Shelf waters between Cape Henry and Cape May." Journal of Plankton Research 9, no. 1 (1987): 139–49. http://dx.doi.org/10.1093/plankt/9.1.139.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Nakin, Motebang Dominic Vincent, Gbemisola Morounke Saibu, Adebola Omowunmi Oyedeji, Viwe Piya, and Mervin Meyer. "CYTOTOXIC ACTIVITIES OF SELECTED MOLLUSC SHELLS ALONG THE EASTERN CAPE COAST IN SOUTH AFRICA." FASEB Journal 34, S1 (April 2020): 1. http://dx.doi.org/10.1096/fasebj.2020.34.s1.09136.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Acuña, José Luis, Araceli Puente, Ricardo Anadón, Consolación Fernández, María Luisa Vera, José Manuel Rico Ordás, Julio Arrontes, and José Juanes. "Large-scale fuel deposition patterns on northern Spanish shores following the ‘Prestige’ oil spill." Journal of the Marine Biological Association of the United Kingdom 88, no. 3 (May 2008): 463–68. http://dx.doi.org/10.1017/s0025315408000830.

Full text

Abstract:

Following the accident of the oil tanker ‘Prestige’, we surveyed the large scale fuel deposition patterns on the Cantabrian shore (northern Spain) covering three regions (from west to east): (i) Asturias, west of Cape Peñas (24 segments surveyed); (ii) Asturias, east of Cape Peñas (33 segments surveyed); and (iii) Cantabria (also east of Cape Peñas, 256 segments surveyed). Fuel arrived to the Cantabrian Coast as a single oil wave which was more intense to the east than to the west of Cape Peñas. The mean percentage of coast length affected was 25, 41 and 15% in western Asturias, eastern Asturias and Cantabria, respectively. However, less than 10% of the substrate was covered by fuel in oiled patches, thus the impact was moderate. We conclude that these patterns are consistent with fuel transport by the Iberian Poleward Current, a hydrographic feature typical of this region during winter.

APA, Harvard, Vancouver, ISO, and other styles

9

Mironyuk, S., and A. Ermolov. "USE OF EARTH REMOTE SENSING MATERIALS IN LITHODYNAMIC RESEARCH (ON THE EXAMPLE OF THE COASTAL ZONE OF THE OKHOTSK SEA)." ECOLOGY ECONOMY INFORMATICS. GEOINFORMATION TECHNOLOGIES AND SPACE MONITORING 2, no. 5 (2020): 83–88. http://dx.doi.org/10.23885/2500-123x-2020-2-5-83-88.

Full text

Abstract:

. The features of coastal destruction on two key areas of the Sea of Okhotsk: Nabil-Lunsky and Nevelsky, are examined, using materials from remote sensing of the Earth. Section significantly different in natural conditions. The analysis of high-resolution satellite images of different times showed that in the Okhotsk sea (Nabil-Lunsky site) a significant factor affecting the dynamics of the coasts is the migration of cuspate bars and storm deformations. Morphologically, cuspate bars are large accumulative wave-like bodies with a period along the coast of about 350–500 m and an amplitude along the normal to the coast of 50–80 m. Cuspate bars s are known to slowly migrate in the direction of the coastal sediment flow. It was found that the average abrasion rate of the beach scarp according to the results of decoding different-time (1983–2010) satellite images and aerial photographs within the Nabil-Lunsky site was from 0.0 to 0.44 m/year. In the Nevel Strait, stability of the west coast is facilitated by wide watts and marches. The eastern coast (Sakhalin Island) in the area of Cape Ouangi is steep coast (slope is greater than 0.03), which favors the marginal erosion. Within the boundaries of the studied areas, the mean annual rate of abrasion was estimated. According to the results of deciphering the satellite images of the Cape Kamennyi area, it was found that the accumulative coasts from 1968 to 2006 were in relatively stable condition, and the abrasion-denudation shore at the seabed end of the cape was subjected to abrasion at speeds of 0.05–0.1 m/year

APA, Harvard, Vancouver, ISO, and other styles

10

Costalago, D., Y. Kisten, C. Clemmesen, and NA Strydom. "Growth and nutritional condition of anchovy larvae on the west and southeast coasts of South Africa." Marine Ecology Progress Series 644 (June 25, 2020): 119–28. http://dx.doi.org/10.3354/meps13345.

Full text

Abstract:

Cape anchovy Engraulis encrasicolus is an ecologically and economically important pelagic fish species occurring along the coast of South Africa. A recent eastward shift in Cape anchovy distribution indicates that environmental conditions are becoming more favorable for the species on the east coast. This shift is particularly important in the sheltered Algoa Bay region, a nursery area for fish larvae. However, the relatively low productivity of the Agulhas Current Large Marine Ecosystem on the eastern coast of South Africa may result in an anchovy population in poorer nutritional condition and with slower growth rates than the west coast population. Using otolith and nucleic acid analyses, the growth rates of anchovy larvae from the western and southeastern coasts of South Africa were compared. The otolith analysis results indicated that, at any given age, individual growth rates for anchovy larvae were higher on the southeast coast than on the west coast. The RNA:DNA values also indicated that instantaneous growth rates of anchovy larvae were higher in Algoa Bay than on the west coast. At the time of sampling, chlorophyll and zooplankton productivity were higher at sampling sites in Algoa Bay than sites on the west coast, potentially due to favorable oceanographic features in the bay. As such, the results suggest that Algoa Bay is a suitable and potentially favorable nursery area for the early stages of anchovy, highlighting the importance of separate management of the southeast coast region in a changing world.

APA, Harvard, Vancouver, ISO, and other styles

11

Zelenskaya, L. A. "Результаты обследования колоний морских птиц восточной части Тауйской губы (Охотское море)." Bulletin of the North-East Science Center, no. 1 (March 29, 2021): 108–22. http://dx.doi.org/10.34078/1814-0998-2021-1-108-122.

Full text

Abstract:

The results of the sea bird colonies census in the eastern part on the coast of the Tauy Bay, Zavyalov Island, and the Koni Peninsula are presented and discussed. Recent census allows to assess changes in nesting colonies of seabirds that occurred over the past 10-15 years. Total number of nesting seabirds is estimated as more than 92 thousand individuals. Gradual decrease in the number of seabirds colonies was observed on the west coast of the Koni peninsula. The great bulk of seabirds nesting in here is concentrated around Cape Bligan - 11,1 thousand individuals and on Cape Skalisty - 7.5 thousand individuals. Recovery of the colony of murres was recorded. On Cape Skalisty, after almost 30-year absence, and the number of murres quickly grows here. The number of breeding seabirds on Umara Island has remained stable for the last 10 years and is estimated as 60.2 thousand individuals. The total number of breeding seabirds along the surveyed part of the continental coast has decreased from 41.7 thousand individuals to 30.2 thousand in 2009-2019.

APA, Harvard, Vancouver, ISO, and other styles

12

Tarr, RJQ. "Growth and movement of the South African abalone Haliotis midae: A reassessment." Marine and Freshwater Research 46, no. 3 (1995): 583. http://dx.doi.org/10.1071/mf9950583.

Full text

Abstract:

Growth rates of a number of Haliotis midae populations around the South African coast were studied by means of tagging. These populations ranged from the cool waters of the western coast to the more temperate environment of the eastern Cape. Standard von Bertalanffy growth curves were fitted and growth parameters derived. These ranged from 0.19 to 0.25 for K, the average rate at which L∞ is approached, and from 156 to 173 for L∞, the average theoretical maximum length. These indicate far higher growth rates than were previously published for this commercially fished species, and the reasons for this difference are discussed. The expectation that growth rates would be fastest in the warmer eastern Cape waters was not realized, there being no significant difference in growth between the Bird Island population on the eastern coast and the Robben Island population on the western coast. These new growth parameters indicate that H. midae in the commercial fishery grounds is attaining sexual maturity some four years earlier, and the minimum legal size some five years earlier, than previously considered. This has considerable significance for modelling studies presently underway. Movement of a small population of adult H. midae was studied over a three-year period, after which 47% of the original abalone were still present on the study site. Of these, 81.5% still occupied exactly the same position on the rocks. This indicates that H. midae that have located an optimum habitat, and that are not disturbed, tend not to move.

APA, Harvard, Vancouver, ISO, and other styles

13

Oliver, E. G. H., and Inge M. Oliver. "Studies in the Ericoideae (Ericaceae). VIII. New species in Erica, section Pseuderemia, from southern Africa." Bothalia 21, no. 2 (October 15, 1991): 137–42. http://dx.doi.org/10.4102/abc.v21i2.873.

Full text

Abstract:

Three new species are described in the genus Erica L.: E abbottii E.G.H Oliver, endemic to the South Coast of Natal and neighbouring Transkei. E. swaziensis E.G.H Oliver, a Swaziland endemic, and E. ingeana E.G.H Oliver which is confined to the high mountains in the eastern Little Karoo of the Cape Province.

APA, Harvard, Vancouver, ISO, and other styles

14

Berkes, Florian, Peter Knippertz, Douglas J. Parker, Gus Jeans, and Valérie Quiniou-Ramus. "Convective Squalls over the Eastern Equatorial Atlantic." Weather and Forecasting 27, no. 3 (June 1, 2012): 770–83. http://dx.doi.org/10.1175/waf-d-11-00086.1.

Full text

Abstract:

Abstract The Congo Basin and the adjacent equatorial eastern Atlantic are among the most active regions of the world in terms of intense deep moist convection, leading to frequent lightning and severe squalls. Studying the dynamics and climatology of this convection is difficult due to a very sparse operational network of ground-based observations. Here, a detailed analysis of recently available high temporal resolution meteorological observations from three oil platforms off the coast of Angola spanning the three wet seasons from 2006/07 to 2008/09 is presented. The annual cycle of squall days as identified from wind data closely follows that of convective available potential energy (CAPE) and therefore mirrors the cycle of wet and dry seasons. The diurnal cycle of squall occurrence varies from station to station, most likely related to local features such as coastlines and orography, which control the initiation of storms. An attempt to classify squalls based on the time evolution of the station meteorology and satellite imagery suggests that microbursts account for at least one-third of the strong gusts, while mesoscale squall lines appear to be quite rare. On a daily basis the probability of squall occurrence increases with increasing values of CAPE, downdraft CAPE, and 925–700-hPa wind shear, and decreases for high convective inhibition, all calculated from vertical profiles of temperature and humidity at the nearest grid point in the NCEP–NCAR and ECMWF reanalysis datasets. Both the climatological results and the stability indices can be used for local forecasting to avoid squalls impacting on operations on the offshore platforms.

APA, Harvard, Vancouver, ISO, and other styles

15

DE CASTRO, MÁRCIA SALUSTIANO, and ANA CRISTINA TEIXEIRA BONECKER. "Leptocephali collected off the eastern coast of Brazil (12°–23°S)." Zootaxa 935, no. 1 (April 8, 2005): 1. http://dx.doi.org/10.11646/zootaxa.935.1.1.

Full text

Abstract:

Although leptocephali are very conspicuous in plankton samples little is known about their occurrence and distribution along the Brazilian coast. Therefore, the present study aimed to identify the leptocephali and their distribution pattern along the eastern Brazilian coast, which is limited in the north by Real River (12°S) and in the south by São Tomé Cape (23°S). Samples were collected during three oceanographic cruises conducted on October–December 1998, May–July 1999 and March–May 2000. Samplings were done using a bongo net with mesh apertures of 330 and 500 µm. The net was towed obliquely and the maximum depth was 200 m. A total of 13 families, 12 genera and 29 species of leptocephali were identified in the study area. Most taxa identified had already been recorded as adult, but the larval phase of some of them had not been identified for this region yet. Among them, Derichthyidae, Avocettina paucipora and Tiluropsis had not been recorded for this region either as adult or as larvae. Most taxa occurred mainly along the Bahia coast but some species were collected strictly in the southern region of the study area.

APA, Harvard, Vancouver, ISO, and other styles

16

Brouwer, S. L., and C. D. Buxton. "Catch and effort of the shore and skiboat linefisheries along the South African Eastern Cape Coast." South African Journal of Marine Science 24, no. 1 (June 2002): 341–54. http://dx.doi.org/10.2989/025776102784528286.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Buxton, C. D., and J. R. Clarke. "The biology of the white musselcrackerSparodon durbanensis(Pisces: Sparidae) on the Eastern Cape coast, South Africa." South African Journal of Marine Science 10, no. 1 (June 1991): 285–96. http://dx.doi.org/10.2989/02577619109504638.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Dodd, Carla, Callum R. Anderson, Renzo Perissinotto, Schalk J. du Plooy, and Gavin M. Rishworth. "Hydrochemistry of peritidal stromatolite pools and associated freshwater inlets along the Eastern Cape coast, South Africa." Sedimentary Geology 373 (October 2018): 163–79. http://dx.doi.org/10.1016/j.sedgeo.2018.06.002.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Smale, M. J. "The feeding biology of four predatory reef fishes off the south-eastern Cape coast, South Africa." South African Journal of Zoology 21, no. 2 (January 1986): 111–30. http://dx.doi.org/10.1080/02541858.1986.11447968.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Adams, J. B., B. M. Colloty, and G. C. Bate. "The distribution and state of mangroves along the coast of Transkei, Eastern Cape Province, South Africa." Wetlands Ecology and Management 12, no. 5 (October 2004): 531–41. http://dx.doi.org/10.1007/s11273-005-5165-0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Phillips, S., D. Coburn, and R. James. "An Observation Of Cat Predation Upon An Eastern Blossom Bat Syconycteris Australis." Australian Mammalogy 23, no. 1 (2001): 57. http://dx.doi.org/10.1071/am01057.

Full text

Abstract:

WITH a body weight of 15 - 19 g and a mean headbody length of just over 60 mm (Churchill 1998), the eastern blossom bat Syconycteris australis is one of the smallest members of the sub-order Megachiroptera. Within Australia S. australis is restricted in distribution to the east coast from Cape York in Queensland to near Forster on the mid-north coast of New South Wales (NSW) (Law 1994a). Habitat requirements include both rainforest and/or wet sclerophyll forest for roosting purposes and proximal areas of heathland for foraging (Law 1993). The species survives on a diet of nectar and pollen and is heavily dependent upon Banksia integrifolia inflorescences during the winter months (Law 1994b, 1996; Coburn 1995). Blossom bats are generally regarded as solitary and exhibit strong fidelity to their feeding areas (Law 1993), although movements of up to 30 km have been reported (Law 1996).

APA, Harvard, Vancouver, ISO, and other styles

22

Cowley, P. D. "Age and growth of the blue stingrayDasyatis chrysonota chrysonotafrom the South-Eastern Cape coast of South Africa." South African Journal of Marine Science 18, no. 1 (June 1997): 31–38. http://dx.doi.org/10.2989/025776197784161054.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Edwards, Mark Joseph Kalahari, Callum Robert Anderson, Renzo Perissinotto, and Gavin Midgley Rishworth. "Macro- and meso-fabric structures of peritidal tufa stromatolites along the Eastern Cape coast of South Africa." Sedimentary Geology 359 (August 2017): 62–75. http://dx.doi.org/10.1016/j.sedgeo.2017.08.006.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Adams, Luther A., Gavin W. Maneveldt, Andrew Green, Natasha Karenyi, Denham Parker, Toufiek Samaai, and Sven Kerwath. "Rhodolith Bed Discovered off the South African Coast." Diversity 12, no. 4 (March 27, 2020): 125. http://dx.doi.org/10.3390/d12040125.

Full text

Abstract:

Rhodolith beds have not previously been recorded in South Africa. A multidisciplinary research effort used remote sampling tools to survey the historically unexplored continental shelf off the Eastern Cape coast of South Africa. A rhodolith bed, bearing both living and dead non-geniculate coralline red algae, was discovered in the 30–65 m depth range off the Kei River mouth in the newly proclaimed Amathole Offshore Marine Protected Area. Some of the rhodolith forming coralline algal specimens were identified as belonging to at least three genera based on their morphology and anatomy, namely, Lithophyllum, Lithothamnion and a non-descript genus. Rhodolith mean mass and diameter were 44.85 g ± 34.22 g and 41.28 mm ± 10.67 mm (N = 13), respectively. Remotely operated vehicle (ROV) imagery revealed a suite of epibenthic red macroalgae associated with the rhodolith bed. Taxonomy, vertical structure and distribution of rhodoliths in South Africa require further investigation.

APA, Harvard, Vancouver, ISO, and other styles

25

Bredenkamp, C. L., and A. E. Van Wyk. "Taxonomy of the Passerina filiformis complex (Thymelaeaceae)." Bothalia 32, no. 1 (September 11, 2002): 29–36. http://dx.doi.org/10.4102/abc.v32i1.459.

Full text

Abstract:

Revision of the genus Passerina L. indicated a new delimitation of taxonomic entities within the Passerina filiformis L. complex. Evidence from leaf anatomy greatly assisted in the recognition of taxa. P. filiformis is here divided into two subspecies. namely P. filiformis subsp. filiformis and P. filiformis subsp. glutinosa (Thoday) Bredenkamp A.E.van Wyk. and a new species. P. montivagus Bredenkamp A.E.van Wyk, which is also described. The new taxa are geographically separated: subsp. filiformis ranges from Piquetberg in the north through the Cape Peninsula in the south, where it is quite common. to Attaquaskloof in the southwestern Cape: subsp. glutinosa occurs along the coast between Vredendal and St Helena Bay; and P. montivagus has a wide distribution from Mossel Bay and Oudtshoom in the south through Eastern Cape and along the Great Escarpment northwards to Zimbabwe, with outliers in Tanzania.

APA, Harvard, Vancouver, ISO, and other styles

26

Kennedy, William James, and Herbert Christian Klinger. "Scaphitid ammonites from the Upper Cretaceous of KwaZulu-Natal and Eastern Cape Province, South Africa." Acta Geologica Polonica 63, no. 4 (December 1, 2013): 527–43. http://dx.doi.org/10.2478/agp-2013-0023.

Full text

Abstract:

ABSTRACT Kennedy, W.J. and Klinger, H.C. 2013. Scaphitid ammonites from the Upper Cretaceous of KwaZulu-Natal and Eastern Cape Province, South Africa. Acta Geologica Polonica, 63 (4), 527-543. Warszawa. Scaphitid ammonites are described and illustrated from the Upper Cretaceous of the coastal region of north-eastern South Africa. Scaphites kieslingswaldensis Langenhan and Grundey, 1891, Scaphites manasoaensis Collignon, 1965, and Yezoites concinna sp. nov. occur in the Coniacian part of the St Lucia Formation in northern KwaZulu-Natal. A further Yezoites sp. may also be from this level. Argentoscaphites corrugatus sp. nov. occurs in the Santonian to Lower Campanian Mzamba Formation on the northernmost coast of Eastern Cape Province. Yezoites australis sp. nov. occurs in the Upper Santonian part of the St Lucia and Mzamba formations of these areas, and Scaphites reesidei Collignon, 1969, is recorded from the Lower Campanian part of the Mzamba Formation. The scaphitid assemblage includes species previously described from Western Europe and Madagascar, together with Argentoscaphites, previously known only from Patagonia (and possibly South India). Dimorphism is recognised in Scaphites reesidei, Yezoites concinna sp. nov. and Y. australis sp. nov. Argentoscaphites corrugatus sp. nov. and Yezoites sp. are represented by microconchs only. Dimorphism has not been recognised in Scaphites kieslingswaldensis.

APA, Harvard, Vancouver, ISO, and other styles

27

Stewardson, C. L. "THE IMPACT OF THE FUR SEAL INDUSTRY ON THE DISTRIBUTION AND ABUNDANCE OF CAPE FUR SEALSARCTOCEPHALUS PUSILLUS PUSILLUSON THE EASTERN CAPE COAST OF SOUTH AFRICA." Transactions of the Royal Society of South Africa 54, no. 2 (January 1999): 217–45. http://dx.doi.org/10.1080/00359199909520626.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Surmont, Emmanuelle, and Sylvain Guyot. "Les nouvelles politiques d’empowerment dans l’accès aux ressources halieutiques en Afrique du Sud. Comparaison entre Péninsule du Cap (Western Cape) et Wild Coast (Eastern Cape)." Annales de géographie 718, no. 6 (2017): 679. http://dx.doi.org/10.3917/ag.718.0679.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

van Wijk, Yvette, Madelon L. Tusenius, Renee Rust, Richard M. Cowling, and Sarah Wurz. "Modern vegetation at the Klasies River archaeological sites, Tsitsikamma coast, south-eastern Cape, South Africa: a reference collection." Plant Ecology and Evolution 150, no. 1 (April 7, 2017): 13–34. http://dx.doi.org/10.5091/plecevo.2017.1286.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Froneman, PW. "Preliminary study on the food web structure of two contrasting estuaries along the Eastern Cape coast, South Africa." African Journal of Aquatic Science 25, no. 1 (January 2000): 13–22. http://dx.doi.org/10.2989/160859100780177622.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Tovar-Faro, Bruna, Michele Leocádio, and Paulo Cesar De Paiva. "Distribution of Iospilidae (Annelida) along the eastern Brazilian coast (from Bahia to Rio de Janeiro)." Latin American Journal of Aquatic Research 41, no. 2 (May 2, 2017): 323–34. http://dx.doi.org/10.3856/vol41-issue2-fulltext-11.

Full text

Abstract:

We present the spatial distribution and abundance of the holoplanktonic family Iospilidae (Annelida, Polychaeta), along part of the eastern Brazilian coast, and its relation to environmental variables in the region. Samples were obtained from two collections made in 1998 and 2000 between 13°-25°S, and 28°- 42°W, on the Brazilian coast, between the Bay of Todos os Santos (BA) to Cape São Tomé (RJ). 216 stations were selected, covering the continental shelf, slope and oceanic regions, where plankton samples were collected for water and nutrient analysis. We analyzed environmental variables: temperature, salinity, dissolved oxygen, pH, ammonia, nitrite, nitrate, phosphate, silicate and chlorophyll-a. 363 individuals were collected, identifying two species, viz., Phalacrophorus uniformis and Phalacrophorus pictus, the first being the most abundant, with 354 individuals, while only nine specimens of P. pictus were found. Both species are mainly distributed in the oceanic region stations. The distribution of P. uniformis was related to the concentration of phosphate and nitrate. Significant differences between samples and between sectors of the continental shelf and oceanic region were found.

APA, Harvard, Vancouver, ISO, and other styles

32

Dumalisile, Lihle, Michael Somers, Michele Walters, and Jan Nel. "Tourists’ willingness to pay to view otters along the Wild Coast, South Africa: a potential for increased ecotourism." Journal for Transdisciplinary Research in Southern Africa 1, no. 1 (May 12, 2005): 10. http://dx.doi.org/10.4102/td.v1i1.304.

Full text

Abstract:

This article reports on tourists’ willingness to pay to view Cape clawless otters Aonyx capensis along the Eastern Cape Wild Coast, South Africa. We collected data from a survey carried out using a structured, selfadministered questionnaire. We analyzed 67 completed questionnaires, of which 60 respondents (89.5%) indicated that they would be interested in viewing otters and would be prepared to pay an extra fee, over and above the normal entrance fees, for a trained guide to show them otters. The remaining 7 (10.4%) respondents indicated that they would reconsider and pay if this would create jobs for members of the local community. Most (98.4% and 91.8%) of the respondents also indicated that they would still pay even if there was only a 50% or 25% chance of seeing otters. Most of the respondents were willing to pay either less than R50.00 (ca US$8.00) or R50.00-R100.00 to view otters regardless of the chances of seeing them. We conclude from our results that otters do have the potential to increase ecotourism in the area, and also to contribute financially to the poverty stricken local Dwesa community.

APA, Harvard, Vancouver, ISO, and other styles

33

Vizy, Edward K., and Kerry H. Cook. "Tropical Storm Development from African Easterly Waves in the Eastern Atlantic: A Comparison of Two Successive Waves Using a Regional Model as Part of NASA AMMA 2006." Journal of the Atmospheric Sciences 66, no. 11 (November 1, 2009): 3313–34. http://dx.doi.org/10.1175/2009jas3064.1.

Full text

Abstract:

Abstract Two successive African easterly waves (AEWs) from August 2006 are analyzed utilizing observational data, the European Centre for Medium-Range Weather Forecasts reanalysis, and output from the National Center for Atmospheric Research–National Oceanic and Atmospheric Administration Weather Research and Forecasting model (WRF) to understand why the first wave does not develop over the eastern Atlantic while the second wave does. The first AEW eventually forms Hurricane Ernesto over the Caribbean Sea, but genesis does not occur over the eastern Atlantic. The second wave, although weaker than the first over land, leaves the West African coast and quickly intensifies into Tropical Storm Debby west of the Cape Verde islands. This study shows that the environmental conditions associated with the first AEW’s passage inhibited development. These conditions include strong low- and midtropospheric vertical wind shear owing to a stronger than normal African easterly jet, lower than normal relative humidity, and increased atmospheric stability. All of these are characteristics of an intensification of the Saharan air layer (SAL), or SAL outbreak, over the eastern Atlantic. The environmental conditions were more favorable for genesis 2½ days later when the second wave left the African coast. Additionally, a strong low-level southwesterly surge develops over the eastern North Atlantic in the wake of the passage of the first wave. This westerly surge is associated with an enhancement of the low-level westerly flow, low-level cyclonic vorticity, large-scale low-level wind convergence, and vertical motion conducive for development over the region. While the initial westerly surge is likely associated with the passage of the first wave, over time (i.e., by 1600 UTC 20 August 2006) the development of the second wave becomes influential in maintaining the low-level westerly surge. Although SAL outbreaks are also associated with the addition of dust, the different cyclogenesis histories of the two systems are simulated without including dust in the regional model.

APA, Harvard, Vancouver, ISO, and other styles

34

Wilson, Kerry-Jayne, Chris S. M. Turney, Christopher J. Fogwill, and Estelle Blair. "The impact of the giant iceberg B09B on population size and breeding success of Adélie penguins in Commonwealth Bay, Antarctica." Antarctic Science 28, no. 3 (February 2, 2016): 187–93. http://dx.doi.org/10.1017/s0954102015000644.

Full text

Abstract:

AbstractThe arrival of iceberg B09B in Commonwealth Bay, East Antarctica, and subsequent fast ice expansion has dramatically increased the distance Adélie penguins (Pygoscelis adeliae) breeding at Cape Denison must travel in search of food. This has provided a natural experiment to investigate the impact of iceberg stranding events and sea ice expansion along the East Antarctic coast. As part of the Australasian Antarctic Expedition 2013–14, the Adélie penguin colony at Cape Denison was censused to compare to historic counts. Whilst some 5520 pairs still bred at Cape Denison there has been an order of magnitude decline in Adélie numbers in the area in comparison to the first counts a century ago and, critically, recent estimates based on satellite images and a census in 1997. In contrast, an Adélie population on the eastern fringe of Commonwealth Bay just 8 km from the fast ice edge was thriving, indicating the arrival of B09B and fast ice expansion was probably responsible for the observed recent population decline. In conclusion, the Cape Denison population could be extirpated within 20 years unless B09B relocates or the now perennial fast ice within the bay breaks out. Our results have important implications for wider East Antarctic if the current increasing sea ice trend continues.

APA, Harvard, Vancouver, ISO, and other styles

35

ROCHA, LUIZ A., ALBERTO BRITO, and D. ROSS ROBERTSON. "Sparisoma choati, a new species of Parrotfish (Labridae: Scarinae) from the tropical eastern Atlantic." Zootaxa 3152, no. 1 (January 6, 2012): 61. http://dx.doi.org/10.11646/zootaxa.3152.1.3.

Full text

Abstract:

The parrotfish Sparisoma choati is described from the tropical eastern Atlantic Ocean. It is genetically unique and alsodiffers from its congeners by coloration as follows: initial phase individuals and females greyish brown to greyish red,with chin and belly paler and reddish brown scales irregularly distributed along flanks resulting in a general mottled ap-pearance; terminal phase individuals with brownish red head and upper half of anterior two-thirds of body, ventral portionof central third of body bright yellow-green, posterior third of body dark greenish gray and dark spot on upper fifth ofpectoral fin base. The new species is found in rocky reefs along the coast and oceanic islands off West Africa, from Cape Verde and Senegal south to the islands of São Tomé and Príncipe and Angola.

APA, Harvard, Vancouver, ISO, and other styles

36

Smale, M. J. "Occurrence and feeding of three shark species,Carcharhinus brachyurus, C. obscurusandSphyrna zygaena, on the Eastern Cape coast of South Africa." South African Journal of Marine Science 11, no. 1 (December 1991): 31–42. http://dx.doi.org/10.2989/025776191784287808.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Ben Ami, Y., O. Altaratz, Y. Yair, and I. Koren. "Lightning characteristics over the eastern coast of the Mediterranean during different synoptic systems." Natural Hazards and Earth System Sciences 15, no. 11 (November 4, 2015): 2449–59. http://dx.doi.org/10.5194/nhess-15-2449-2015.

Full text

Abstract:

Abstract. Thunderstorm activity takes place in the eastern Mediterranean mainly through the boreal fall and winter seasons during synoptic systems of Red Sea Trough (RST), Red Sea Trough that closed a low over the sea (RST-CL), and Cyprus Low (during fall – FCL and winter – WCL). In this work we used the Israeli Lightning Location System ground strokes data set, between October 2004 and December 2010, for studying the properties of lightning strokes and their link to the thermodynamic conditions in each synoptic system. It is shown that lightning activity dominates over sea during WCL and FCL systems (with maximum values of 1.5 in WCL, and 2.2 km−2 day−1 in FCL) and have a dominant component over land during the RST and RST-CL days. The stronger instability (high Convective Available Potential Energy (CAPE) values of 762 ± 457 J kg−1) during RST-CL days together with the higher altitude of the clouds' mixed-phase region (3.6 ± 0.3 km), result in a slightly higher density of ground strokes during this system but a lower fraction of positive ground strokes (3 ± 0.5 %). In general the fraction of positive strokes was found to be inversely correlated with the sea surface temperature: it increases from 1.2 % in early fall to 17.7 % in late winter, during FCL and WCL days. This change could be linked to the variation in the charge center's vertical location during those months. The diurnal cycle in the lightning activity was examined for each synoptic system. During WCL conditions, no preferred times were found through the day, as it relates to the random passage timing of the frontal systems over the study region. During the fall systems (FCL and RST-CL) there is a peak in lightning activity during the morning hours, probably related to the enhanced convection driven by the convergence between the eastern land breeze and the western synoptic winds. The distributions of peak currents in FCL and WCL systems also change from fall to winter and include more strong negative and positive strokes toward the end of the winter.

APA, Harvard, Vancouver, ISO, and other styles

38

Nimbs, Matt J. "A Victorian emigrant: first observation and range extension of the nudibranch Tenellia catachroma (Burn, 1963) in Western Australia (Mollusca: Gastropoda)." Proceedings of the Royal Society of Victoria 129, no. 1 (2017): 37. http://dx.doi.org/10.1071/rs17003.

Full text

Abstract:

The southwest coast of Western Australia is heavily influenced by the south-flowing Leeuwin Current. In summer, the current shifts and the north-flowing Capes Current delivers water from the south to nearshore environments and with it a supply of larvae from cooler waters. The nudibranch Tenellia catachroma (Burn, 1963) was considered restricted to Victorian waters; however, its discovery in eastern South Australia in 2013 revealed its capacity to expand its range west. In March 2017 a single individual was observed in shallow subtidal waters at Cape Peron, Western Australia, some 2000 km to the west of its previous range limit. Moreover, its distribution has extended northwards, possibly aided by the Capes Current, into a location of warming. This observation significantly increases the range for this Victorian emigrant to encompass most of the southern Australian coast, and also represents an equatorward shift at a time when the reverse is expected.

APA, Harvard, Vancouver, ISO, and other styles

39

Green, A. N., J. A. G. Cooper, N. P. Dlamini, N. N. Dladla, D. Parker, and S. E. Kerwath. "Relict and contemporary influences on the postglacial geomorphology and evolution of a current swept shelf: The Eastern Cape Coast, South Africa." Marine Geology 427 (September 2020): 106230. http://dx.doi.org/10.1016/j.margeo.2020.106230.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Huyer, A., RL Smith, PJ Stabeno, JA Church, and NJ White. "Currents off south-eastern Australia: results from the Australian coastal experiment." Marine and Freshwater Research 39, no. 3 (1988): 245. http://dx.doi.org/10.1071/mf9880245.

Full text

Abstract:

The Australian Coastal Experiment was conducted off the east coast of New South Wales between September 1983 and March 1984. The experiment was conducted with arrays of current meters spanning the continental margin at three latitudes (37.5�, 34.5�, and 33.0�S.), additional shelf moorings at 29� and 42�S. coastal wind and sea-level measurements, monthly conductivity-temperature-depth probe/expendable bathythermograph (CTD/XBT) surveys, and two satellite-tracked buoys. Over the continental shelf and slope, the alongshore component of the current generally exceeded the onshore component, and the subtidal (<0.6 cpd, cycles per day) current variability greatly exceeded the mean flow. Part of the current variability was associated with two separate warm-core eddies that approached the coast, causing strong (>50 cm sec-1), persistent (>8 days), southward currents over the continental slope and outer shelf. Temperature and geostrophic velocity sections through the eddies, maps of ship's drift vectors and temperature contours at 250 m, and the satellite-tracked drifter trajectories showed that these eddies were similar in structure to those observed previously in the East Australian Current region. Both eddies migrated generally southward. Eddy currents over the shelf and slope were rare at Cape Howe (37.5�S.), more common near Sydney (34.5�S.), and frequent at Newcastle (33.0�S.), where strong northward currents were also observed. Near Sydney, the eddy currents over the slope turned clockwise with depth between 280 and 740 m, suggesting net downwelling there. Repeated CTD sections also indicated onshore transport and downwelling at shallower levels; presumably, upwelling occurred farther south where the eddy currents turned offshore. Periodic rotary currents over the continental slope near Sydney and Newcastle indicated the presence of small cyclonic eddies on the flank of a much larger anticyclonic eddy. Between early October and late January, no strong southward currents were observed over the continental margin near Sydney. Data from this 'eddy-free' period were analysed further to examine the structure and variability of the coastal currents. Much of this variability was correlated with fluctuations in coastal sea-level (at zero lag) and with the wind stress (at various lags). The coherence and phase relationships among current, wind-stress, and sea-level records at different latitudes (determined from spectral analysis and frequency-domain empirical orthogonal functions) were consistent with the equatorward propagation of coastal-trapped waves generated by winds in phase with those near Cape Howe. Time-domain empirical orthogonal functions show that the current fluctuations decayed with distance from shore and with depth, as expected of coastal-trapped waves.

APA, Harvard, Vancouver, ISO, and other styles

41

Hill, Christopher M., Patrick J. Fitzpatrick, James H. Corbin, Yee H. Lau, and Sachin K. Bhate. "Summertime Precipitation Regimes Associated with the Sea Breeze and Land Breeze in Southern Mississippi and Eastern Louisiana." Weather and Forecasting 25, no. 6 (December 1, 2010): 1755–79. http://dx.doi.org/10.1175/2010waf2222340.1.

Full text

Abstract:

Abstract This study assesses the monthly climatology of the timing and placement of convective precipitation events induced by sea and land breezes in the Louisiana–Mississippi–Alabama region, and determines possible reasons for the monthly differences. These objectives were achieved through surface wind climatologies and radar composites from 2003 to 2005, supplemented by statistically significant tests. It is shown that June had an easterly–southeasterly wind regime, whereas July and August featured more southerly flow. These wind regimes may have influenced monthly diurnal wind patterns along the coast. While all months showed a typical pattern of sea-breeze evolution, the land breeze demonstrated monthly variations off the Mississippi and Louisiana coasts. July and August feature a westerly land breeze from Louisiana, while the Mississippi land breeze was stronger in August than in July. A daily wind speed minimum offshore from Mississippi indicates a local transition of influence from the land breeze to the sea breeze, and precedes the peak of the sea breeze at the coastline by about 2 h. During the nighttime hours, radar composites show that precipitation is most prevalent offshore of the Louisiana and Mississippi coastline. By 1100 central daylight time (CDT), precipitation is observed over coastal regions. Local afternoon precipitation is widespread throughout the inland areas, while precipitation is minimal offshore. Statistical significance tests show that areal precipitation coverage (APC) increases in mid- to late summer on the Mississippi coast are due to higher precipitable water and, to a lesser extent, additional CAPE. Greater offshore APC in July and August results from the influence of the local land-breeze setup. Convergence of a land breeze from eastern Louisiana and a stronger land breeze from Mississippi provides the additional lift needed to generate convection over a greater area.

APA, Harvard, Vancouver, ISO, and other styles

42

GÉNIER, FRANÇOIS, and ADRIAN L. V. DAVIS. "Digitonthophagus gazella auctorum: an unfortunate case of mistaken identity for a widely introduced species (Coleoptera: Scarabaeidae: Scarabaeinae: Onthophagini)." Zootaxa 4221, no. 4 (January 19, 2017): 497. http://dx.doi.org/10.11646/zootaxa.4221.4.8.

Full text

Abstract:

At risk of committing entomological heresy, we question the identity of a dung-burying beetle species that originates from Africa and has been introduced first into Hawaii and subsequently to Australasia, North America, and South America (Fincher 1986; Edwards 2007; Noriega et al. 2010) for pasture improvement and biological control of dung-breeding flies (Waterhouse 1974; Bornemissza 1979). Under the name Onthophagus gazella (Fabricius 1787), it was the first species selected for introduction into Australia by the CSIRO Dung Beetle Project (Bornemissza 1976; Edwards 2007). Firstly, in 1968, a "tropical strain" was introduced from Hawaii where it had become established after introduction from Zimbabwe in 1957 (Markin & Yoshioka 1998). Later, after establishment of the CSIRO Dung Beetle Research Unit in Pretoria in 1970, a "cold" or "even rainfall strain" was introduced into Australia directly from South Africa (Bornemissza 1976) (even rainfall region = south coast of Eastern Cape). The species was subsequently introduced into the southern continental United States of America (Victoria County, Texas) from Hawaii (Montes de Oca & Halffter 1998) then elsewhere into southeastern and southwestern states from Hawaii and breeding colonies from Australia (Anderson & Loomis 1978). It has since expanded its range through Mexico, Central America, and the Caribbean to coastal Colombia (Kohlmann 1994; Noriega 2002; Noriega et al. 2006, 2011). Expansion of its range within central southern South America (Noriega et al. 2010) has been assisted by introductions into Brazil from the United States of America since the 1980s (Bianchin et al. 1998), and others into Venezuela and Chile (Vidaurre et al. 2008). More recently, it has been introduced into quarantine and field trials in New Zealand (Forgie et al. 2013) using individuals originating from the south coast of the Eastern Cape and Northwest Province of South Africa (S. Forgie, personal communication).

APA, Harvard, Vancouver, ISO, and other styles

43

Sjarif, Sjarmilah. "SEASONAL FLUCTUATIONS IN THE SURFACE SALINITY ALONG THE COAST OF THE SOUTHERN PART OF KALIMANTAN (BORNEO)." Marine Research in Indonesia 4 (May 10, 2018): 1–25. http://dx.doi.org/10.14203/mri.v4i0.330.

Full text

Abstract:

The westerly current of the Java Sea from the southeast is branched to the north, along the eastcoast of Kalimantan (Borneo) as far as Cape Mangkalihat. This current brings high saline water, over 34.0 ‰, and increases the salinity along the coast of the southern part of Kalimantan, working together with the decreasing rains. In the westmonsoon, when the westward current has retreated and the easterly current from the South China Sea has developed, the northerly current along the eastcoast is replaced by a southerly current, from ,the Pacific. Under influence of the increasing rains and the large outflow of the rivers in the southern part of Kalimantan the salinity decreases rapidly, until a minimum value. This minimum is found irregularly during the diffferent months of the westmonsoon or the succeeding transition period. The lowest values are found in Sukadana Bay (29.0 ‰) and off Bandjarmasin (± 24.0 ‰). The further from this place, the higher the values. The maximum salinity is found during the months September and October in accordance with the minimum rainfall. The highest values are found in the eastern part of the investigated area (34.5 ‰). To the west it is lower, the more it is mixed with the low-saline water of the Java Sea. The salinity in the Karimata Strait is about 33.0 to 33.5 ‰.

APA, Harvard, Vancouver, ISO, and other styles

44

Stekolshchikova, M. Yu. "Spatial distribution and interannual variability of catches for pink salmon of artificial origin in the waters of eastern coast of Sakhalin Island in modern times." Izvestiya TINRO 201, no. 2 (July 9, 2021): 484–504. http://dx.doi.org/10.26428/1606-9919-2021-201-484-504.

Full text

Abstract:

Mixed herds of pink salmon including the fish of both artificial and natural origin are exploited by fishery in many areas of Sakhalin Island. To separate the fish of different origin, large-scale tagging of the juveniles otoliths is conducted at salmon hatcheries since 2008. The hatcheries contribution to pink salmon catches in certain areas of East Sakhalin (from the Langeri River to Cape Crillon) is assessed for 2011–2017 on the base of previously published and new data on occurrence of the fish with marked otoliths. The specimens were sampled from commercial catches of 5–13 fixed nets and from research catches in 5–9 rivers throughout entire spawning season. In total, 40,992 otoliths of pink salmon were collected. The otoliths were prepared for microstructure analysis using standard methods of processing. All marked otoliths had the tags of hatcheries located on the eastern coast of Sakhalin. The fish of artificial origin were caught in all examined sites between Cape Soymonov and Cape Crillon every year, but in some years their distribution was wider, up to the northern limit of the investigated area (Langeri River). The fish of artificial origin migrated to all rivers within this area. The total annual landing of the pink salmon marked at artificial hatcheries in the East Sakhalin waters was estimated as 300–10600 t, by years. The rest of the fish of artificial origin (0.4–2.3 . 106 ind.) entered to the rivers and mostly reached the spawning grounds. Long-term dynamics of landing was compared for the pink salmon of artificial and natural origin and their independence was concluded. Distribution of pink salmon originated from certain artificial hatcheries by sites of catch was rather constant that allowed to extrapolate the results for marked fish to all released pink salmon. The highest contribution of pink salmon of artificial origin was noted for catches in the Aniva Bay (23.9 %, on average), it was lower for catches at the southeastern coast of Sakhalin (13.2 %), and more lower for catches in the Patience Bay (7.6 %). Total number of pink adults of artificial origin caught on a particular stretch of coast did not depend directly on the number of pink juveniles released from a local hatchery, but was determined mainly by number of fish migrated there from other hatcheries. The landing of pink salmon originated from artificial hatcheries directly in the rivers where these hatcheries were located and at their mouths was < 10 % of the total catch of pink salmon of artificial origin. Schemes of quantitative distribution of pink salmon with marked otoliths in the waters of East Sakhalin are presented.

APA, Harvard, Vancouver, ISO, and other styles

45

Martyanov, Stanislav D., Anton Yu Dvornikov, Vladimir A. Ryabchenko, and Dmitry V. Sein. "Modeling of Sediment Transport in Bothnian Bay in the Vicinity of the Nuclear Power Plant ‘Hanhikivi-1’ Construction Site." Journal of Marine Science and Engineering 7, no. 7 (July 18, 2019): 229. http://dx.doi.org/10.3390/jmse7070229.

Full text

Abstract:

The intensity of sediment resuspension and sedimentation in the eastern part of the Bothnian Bay near the Hanhikivi cape, where the nuclear power plant ‘Hanhikivi-1’ will be constructed, has been assessed for the first time by means of numerical modeling under the realistic external forcing that occurred in 2014. A brief description of a coupled modeling system used in the study is given. The results of local resuspension intensity and sediment accumulation rates for one-year model run are presented. It has been determined that the main areas of sediment accumulation are located along the northern coast off the Hanhikivi peninsula and in the shallow region situated to the north-east off the cape. Sedimentation rates in the navigation channel have also been estimated. Model results obtained for 2014 suggest that sedimentation in the seaward part of the channel is absent, while sediment accumulation intensity is about 10 cm/year in the middle part of the channel and 70 cm/year in the coastal part. A temporal variability of the sedimentation rates during the year has been emphasized.

APA, Harvard, Vancouver, ISO, and other styles

46

BARRACLOUGH, DAVID A. "An overview of the South African tangle-veined flies (Diptera: Nemestrinidae), with an annotated key to the genera and a checklist of species." Zootaxa 1277, no. 1 (July 31, 2006): 39. http://dx.doi.org/10.11646/zootaxa.1277.1.4.

Full text

Abstract:

The South African Nemestrinidae are reviewed. Regional family characteristics, biology and the importance of long-proboscid species in pollination biology are discussed. Long-proboscid species (proboscis 15 mm or longer) are important pollinators in most provinces, but particularly in the Western Cape; all have specialised pollination interactions with long-tubed flower species. Five pollination guilds centered on long-proboscid species are briefly discussed. A detailed, annotated key to the six genera is presented; in it particular attention is given to the problematic distinction between Prosoeca Schiner and Stenobasipteron Lichtwardt. A checklist of all described species considered to have a South African provenance is provided. A total of 43 described species is recorded in the following genera: Moegistorhynchus Macquart (4 species); Prosoeca (35 species); Stenobasipteron (1 species); Atriadops Wandolleck (1 species); Nycterimyia Lichtwardt (1 species); Trichopsidea Westwood (1 species). Moegistorhynchus is restricted to the west coast (Western Cape, Northern Cape). Three of its species have a remarkably elongate proboscis, the best known and most widespread being M. longirostris (Wiedemann, 1819). Its proboscis reaches 90 to 100 mm in length in some specimens, this being the longest proboscis of all known Diptera. Two new species have been identified in the fauna. Prosoeca dominates the fauna, and is the only genus likely to be represented in all nine provinces. It appears to occur in all habitats except closed-canopy forest. Prosoeca major Bezzi, 1924 is newly synonymised with P. robusta Bezzi, 1924. The likely South African provenance of P. nigripes (Macquart, 1840) is confirmed. Nemestrina obscura Westwood, 1835, previously referred to Prosoeca, is considered not to be an Afrotropical species. Prosoeca rhodesiensis Bequaert, 1925a, is recorded from South Africa for the first time. Although Stenobasipteron is restricted to only one named South African species, namely S. wiedemanni Lichtwardt, 1910 from the Eastern Cape and KwaZulu-Natal, several undescribed species occur in Mpumalanga and Limpopo. Stenobasipteron wiedemanni occurs in closed-canopy forest, but species from Mpumalanga may occur in other habitats such as grassland and savanna. There are at least two species of Atriadops, one almost certainly being A. vespertilio (Loew, 1858). The genus is recorded from the Western Cape, Eastern Cape, KwaZulu-Natal, Gauteng and Mpumalanga. A taxonomic revision is recommended. Nycterimyia is represented by one species only, namely N. capensis Bezzi, 1924 from KwaZulu-Natal and Limpopo. Trichopsidea is represented by one species, T. costata (Loew, 1858), recorded from North West, Gauteng and Limpopo.

APA, Harvard, Vancouver, ISO, and other styles

47

Singleton, A. T., and C. J. C. Reason. "Numerical simulations of a severe rainfall event over the Eastern Cape coast of South Africa: sensitivity to sea surface temperature and topography." Tellus A: Dynamic Meteorology and Oceanography 58, no. 3 (January 2006): 335–67. http://dx.doi.org/10.1111/j.1600-0870.2006.00180.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

FOSTER, GREG G., and ALAN N. HODGSON. "Annual reproductive cycles of three sympatric species of intertidal holothurians (Echinodermata) from the coast of the Eastern Cape Province of South Africa." Invertebrate Reproduction & Development 27, no. 1 (February 1995): 49–59. http://dx.doi.org/10.1080/07924259.1995.9672433.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

NIEDBAŁA, WOJCIECH, ELIZABETH A. HUGO-COETZEE, and SERGEY G. ERMILOV. "New Notophthiracarus species (Acarina, Oribatida, Phthiracaridae) and overview of the distribution of the genus in South Africa." Zootaxa 4647, no. 1 (July 26, 2019): 231–40. http://dx.doi.org/10.11646/zootaxa.4647.1.16.

Full text

Abstract:

Notophthiracarus (Oribatida, Phthiracaridae) is a large genus of ptyctimous oribatid mites with species in Australasian, Ethiopian, Neotropical, Oriental and Subantarctic regions, mostly in tropical and subtropical areas. Herein, we describe two new species from the Western Cape of South Africa: Notophthiracarus sidorchukae Niedbała sp. nov. and Notophthiracarus spathulatus Niedbała sp. nov. Each is represented by adult specimens collected from soil in a coastal forest in the Kaaimansgat estuary, the only documented locality. These two bring the known South African fauna of Notophthiracarus to 31 species, all of which are either indigenous or endemic. A review of distributional data shows that within South Africa most species have been recorded from southern, eastern and northeastern parts, and are most prevalent near the coast, where woody vegetation dominates.

APA, Harvard, Vancouver, ISO, and other styles

50

Papakonstantinou, Apostolos, Konstantinos Topouzelis, Michaela Doukari, and Olympos Andreadis. "Mapping refugee litters in the eastern coast of Lesvos using UAS, an emerging marine litter problem." Abstracts of the ICA 1 (July 15, 2019): 1–2. http://dx.doi.org/10.5194/ica-abs-1-290-2019.

Full text

Abstract:

<p><strong>Abstract.</strong> In the last year, the Greek islands of the eastern Aegean Sea were the main entrance points used by refugees arriving in the EU. The crossing between Turkey and the eastern Aegean islands is carried out using mostly small inflatable boats. Additionally, wooden and plastic vessels of various sizes are abandoned at the beaches upon arrival together with other items such as life jackets, inflatable tubes, and clothing. In many cases, these boats are sunk offshore, and their wrecks litter the seabed. This new type of marine litter has overwhelmed many of the eastern Aegean island beaches. In this study, a methodology using Unmanned Aerial Systems (widely known as UAS, UAVs or drones) are used for surveying and mapping of the location and the concentration of marine litter in the coastal areas. More specific is presented the methodology of the mapping of two beaches in Lesvos Island that were surveyed for marine litter, and immigration-related items. One beach is located in the southeaster part and is named Kratigos, and the other one is in the Northeast part of Lesvos close to Korakas cape a widely used "destination" for immigrants due to the lighthouse that is located in this area. The data acquisition has been performed with the use of a Vertical Take-off and Landing (VTOL) quadrotor configuration and the creation of detailed orthophoto maps by processing the aerial photos using Structure from Motion methods and algorithms. The final results of sea marine litter mapping are two very detailed with a high spatial resolution orthophoto maps that are depicting the location, the density and the size of selected litter located underwater and, on the shore, (Figure 1). The main scope of this work was to evaluate: (i) the extent of the refugee arrival related marine litter problem along the eastern coast of Lesvos; and (ii) the efficiency and cost-effectiveness of new technologies to provide quick, accurate cartographic visualizations of the marine litter distribution in order to plan efficiently the clean-up operations. The study has shown that the eastern coast of Lesbos faces a very significant environmental problem. Wide stretches of the coastline are overwhelmed by marine litter, such as ship wrecks, and PVC boat remains, lifejackets, discarded clothing and personal items, boat engines and engine fragments. It was also found that litter concentrations varied along the coastline in terms of their distribution over the “dry” (land) beach and the nearshore seabed. In some areas, there was extensive littering of the dry beach but not of the nearshore seabed, whereas other areas, both with good and very poor (or no) access, showed small quantities of litter on the dry beach but extensive littering on the nearshore seabed. The nearshore seabed offshore of cliff coasts which due to complete lack of access have been not used as entrance points was found to be full of different litter as located from the cartographic representations and observed by dedicated dives.</p>

APA, Harvard, Vancouver, ISO, and other styles

Journal articles on the topic 'Eastern Cape coast'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles