scholarly journals ESTUDIO DE LAS POBLACIONES DE CABALLITOS DE MAR EN DOS ZONAS DE LA COSTA NORTE DE LA HABANA Y PINAR DEL RÍO, CUBA

2011 ◽  
Vol 3 ◽  
pp. 171 ◽  
Author(s):  
Lourdes Pastor Gutiérrez ◽  
Yuliet Piloto Cubero ◽  
Raúl Igor Corrada Wong ◽  
Pedro Pablo Chevalier Monteagudo
Keyword(s):  
Abundant Species ◽  
North Coast ◽  
Visual Census ◽  
Male And Female ◽  
The North ◽  
Hippocampus Erectus ◽  
Dry Seasons ◽  
Del Rio ◽  
Expected Proportion

Se presentan los resultados sobre el estudio de las poblaciones de caballitos de mar en dos estaciones ubicadas en la costa norte de La Habana y Pinar del Río, Cuba. Se llevaron a cabo censos visuales mediante buceo libre, utilizando el método de transectos lineales, entre los meses de abril del 2004 y junio del 2005. Se obtuvieron la densidad media para las especies Hippocampus reidi (Ginsburg, 1933) e Hippocampus erectus (Perry, 1810), así como la densidad media por estaciones y por época del año. La especie H. reidi fue la más abundante y la mayor densidad se encontró en la estación de Las Cuarenta 0.0109 ind/m2. No se encontraron diferencias entre la densidad en época de lluvia y seca para las especies. Los machos y las hembras de H. reidi mostraron tallas similares (LT). Se supone un comportamiento monógamo de la especie H. reidi, debido a la proporción sexual encontrada, muy similar a la proporción esperada de 1:1. ABSTRACT This paper presents the results of the study on seahorse populations at two stations located in the north coast of La Habana and Pinar del Río, Cuba. Visual census were conducted by free divers, using the linear transect method between April 2004 and June 2005. Mean density was obtained for the species Hippocampus reidi (Ginsburg, 1933) and Hippocampus erectus (Perry, 1810), by stations and by seasons of the year. H. reidi was the most abundant species and the biggest density was present in Las Cuarenta station 0.0109 ind/m2. No differences were found regarding density between the rainy and dry seasons for the studied species. Male and female H. reidi showed similar sizes (LT). A monogamous behavior of the species H. reidi is inferred due to the sexual proportion found, which is very similar to the expected proportion of 1:1

scholarly journals KARAKTERISTIK HABITAT IKAN KERAPU DI KEPULAUAN KARIMUN JAWA, JAWA TENGAH

2015 ◽  
Vol 7 (3) ◽  
pp. 147
Author(s):  
Mujiyanto Mujiyanto ◽  
Amran Ronny Syam
Keyword(s):  
Habitat Characteristics ◽  
North Coast ◽  
Line Transect ◽  
Visual Census ◽  
Fishing Activity ◽  
The North ◽  
Characteristics Method ◽  
Low Visibility ◽  
Bottom Waters ◽  
On Line

Perairan Kepulauan Karimunjawa merupakan pemasok ikan kerapu bagi wilayah Pantai Utara Jawa. Permintaan dan harga pasar yang sangat tinggi mendorong nelayan lebih intensif dalammelakukan penangkapan ikan kerapu. Kegiatan penangkapan ikan kerapu selama ini dilakukan pada malam hari dengan alat bantu kompresor dan tembak. Kegiatan tersebut merupakan salah satu usaha untuk mendapatkan jumlah tangkapan yang tinggi tanpa memperhatikan kelestarian habitat dasar perairannya. Penelitian bertujuan untukmengetahui keeratan hubungan ikan kerapu dengan karakteristik habitatnya. Metode yang digunakan adalah deskriptif eksploratif. Penelitian dilaksanakan selama 3 tahun (2011; 2012 dan 2013), waktu sampling masing-masing tahun penelitian berdasarkan musim. Pengamatan visual sensus sepanjang garis transek pada dua kedalaman 5-6 m dan 10-11 m. Hasil penelitian menunjukkan habitat ikan kerapu pada kedalaman ±5-6 meter adalah non karang serta substrat mati lainnya. Selain itu, ikan-ikan kerapu cenderung bergerak ke perairan yang lebih dalam. Karakteristik habitat pada kedalaman ±10-11 meter menunjukkan ikan kerapu lebih menyukai dasar perairan dengan habitat karang keras yang didominasi oleh gundukan karangmassive yang membentuk celah atau lubang lubang. Perilaku ikan kerapu bergerak dan berpasangan di tempat yang agak gelap (rendah visibilitas) dengan intensitas cahaya yang rendah. Perbedaan habitat kehidupan ikan kerapu pada kedalaman 5-6 dan 10-11 meter adalah dominasi karang jenis Pavona sp dengan tingkat visibilitas perairan yang rendah.Karimunjawa Islands is a supplier of grouper fish for the north coast of Java. Grouper fishing activities have been carried out fishing done at night with a compressor and shooting aids. Fishing activity is an effort to get the number of catches were high regardless habitat resources of waters. The research aims to determine the correlation grouper fish with habitat characteristics. Method be used is descriptive exploratory method. The research was done in over three years (2011; 2012 and 2013), each sampling of research based on season time. The observations visual census along on line transect at two depths (± 5-6 and ± 10-11 meters). The results showed that habitat in depth ± 5-6 meters, that grouper fish was found in non-reef habitats and other death substrates, as well as show grouper fish tend to move to deeper waters. Characteristics habitats in a depth of ±10-11 meters prefers bottom waters with hard coral habitats with dominated by massive coral mounds are a lot of gaps or holes. Behavior grouper fish move and paired witha low visibility (low intensity of light). Differences habitats of grouper fish life in depth ± 5-6 and ± 10-11 meters is coral dominated by Pavona sp and low visibility of water level.

scholarly journals Characterisation of artisanal catches in selected fishing areas of the Lower Tana Delta and Malindi-Ungwana Bay, Kenya

2020 ◽  
Vol 19 (1) ◽  
pp. 45-53
Author(s):  
Mumini Dzoga ◽  
Danny Simatele ◽  
Cosmas Munga
Keyword(s):  
Clarias Gariepinus ◽  
Abundant Species ◽  
Fishing Effort ◽  
North Coast ◽  
Marine Habitat ◽  
North East ◽  
Fisheries Resources ◽  
The North ◽  
Scomberomorus Commerson ◽  
Catch Composition

Shore-based assessment of fisheries resources in Ngomeni, Kipini and Ozi fishing areas of Malindi-Ungwana Bay and the Lower Tana Delta on the north coast of Kenya was conducted from January to December 2017 to establish catch composition, species richness, and fishing effort (catch-rate, number and types of fishing gears and crafts) in the marine, estuarine and riverine habitats. Distinct catch composition (R = 0.27, P < 0.05) was observed across the three habitats. Catch composition differed significantly spatially and seasonally across the three fishing areas, and between the north east (NE) and south east (SE) monsoon seasons (R = 0.332, P < 0.05). The wolf herring, Chirocentrus dorab, was the most abundant fish species in Ngomeni, centrally located in Malindi-Ungwana Bay, while the catfishes, Arius africanus and Clarias gariepinus, were the most abundant species in Kipini and Ozi, respectively. Gillnets operated from dhows (mashua) and fibre-reinforced plastic (FRP) boats in Ngomeni (marine), and canoes using-basket traps in Ozi (riverine), landed significantly larger Spanish mackerel, Scomberomorus commerson, and sea catfish, Arius africanus (Kruskal Wallis test: Df = 2; F = 197.141; p < 0.001; Df = 2, F = 490, p < 0.001), respectively. Species diversity by area in combination with habitat and type of fishing craft showed higher diversity for Ngomeni in the marine habitat with mashua fishing crafts than in Kipini. Significantly different catch rates (Df = 2, F = 10.43, p<0.001; Df = 1, F = 5.897, p < 0.021) were observed in the three (3) fishing areas and during the NE monsoon and the SE monsoon, respectively. Canoes were the most common fishing craft used, especially in Ngomeni, accounting for 37.1%, and 97.5% in Ozi, while mashua crafts accounted for 44.5% of the total fishing craft in Kipini. Monofilament nets were most common in Ngomeni (34.0%) while basket traps dominated the Ozi site at 63.6%. The Kipini area was dominated by handlines (28.8%). It is therefore evident that the three (3) fishing areas of the Malindi-Ungwana Bay and Lower Tana Delta showed significant differences in catch composition and size of fish caught, attributed partly to the variation in habitat types and fishing methods between the sites. Overall, the Ngomeni area was characterized by more advanced fishing craft with the majority powered by engines, including mashua and FRP boats, compared to Kipini and Ozi fishing areas where canoes were dominant.

MBAH HENDRO KUSUMO BIN SYECH AHMAD MUTAMAKKIN: JEJAK SYIAR ISLAM DI WILAYAH PATI

EMPIRISMA ◽  
2008 ◽  
Vol 27 (2) ◽  
Author(s):  
Fathimatuz Zahra Dan Abdul Azis
Keyword(s):  
Central Region ◽  
Marital Relationship ◽  
Southern Region ◽  
North Coast ◽  
The North ◽  
Trace Back ◽  
Northern Regions ◽  
The One

Pati is a region on the north coast, according to the hypothesis of the researcher, the region is divided into three categories. The northern regions are more religious, the central is more plural, while the southern region is in the middle. In the central region there are many relics of tombs believed to be the those of the Muslim proselytizers in the area of Pati. The one that attracts the researcher is a tomb in the Gambiran area, where there are five local Muslim saints buried, one of them belons to mbah Hendro Kusumo, the son of Syech Ahmad Mutamakkin. This article attempts to trace back the spreading of Islam in Pati based on the existence of thetomb of Mbah Hendro Kusumo. It wants to answer question of whethere the existence of his tomb is due to his studying there or marital relationship, and how it relates to the spreading of Islam.Keywords: Mbah Hendro Kusumo, Traces of Islamic Dakwah, Islam

4 The Tyara Site

1968 ◽  
Vol 22 ◽  
pp. 44-79 ◽  
Author(s):  
William E. Taylor
Keyword(s):  
Sandy Beach ◽  
North Coast ◽  
National Museum ◽  
The West ◽  
Rock Outcrops ◽  
Small Boat ◽  
The North

The Tyara site, KkFb-7 in the National Museum catalogue and site file, faces the north coast of the Ungava mainland and rests on the west shore of Sugluk Island (Fig. 1). That island stands about five hundred yards from the mainland and from Sugluk Inlet, one of the few good harbors on that coast. This handsome little island, about one and one-half miles long and as wide, consists of rounded, rugged, hardrock hills that shelter well-vegetated, generally flat-floored valleys. The valleys often contain marshy patches. The shore, of variable incline, is quite jagged, a result of abrupt rock outcrops projecting seaward from brief stretches of sandy beach. The shore facing the mainland is, therefore, quite convenient for small boat use. Dark grey gneisses seem to predominate, although they are often cut by dykes and veins of lighter material, notably quartz. The dense, green valley and hillside vegetation includes willows, mosses, grasses, lichens, and a pleasant profusion of arctic wild flowers (Polunin 1948, Pt. III). I was told at Sugluk that at the head of the inlet, willows, growing in protected situations, reach the thickness of a man's wrist.

Seed production and seedling emergence of Giant Parramatta grass on the north coast of New South Wales

1996 ◽  
Vol 36 (3) ◽  
pp. 299 ◽  
Author(s):  
TS Andrews ◽  
RDB Whalley ◽  
CE Jones
Keyword(s):  
Seed Production ◽  
Seed Bank ◽  
New South ◽  
New South Wales ◽  
Seed Banks ◽  
North Coast ◽  
The North ◽  
South Wales ◽  
Seed Fall ◽  
The Impact

Inputs and losses from Giant Parramatta grass [GPG, Sporobolus indicus (L.) R. Br. var. major (Buse) Baaijens] soil seed banks were quantified on the North Coast of New South Wales. Monthly potential seed production and actual seed fall was estimated at Valla during 1991-92. Total potential production was >668 000 seeds/m2 for the season, while seed fall was >146000 seeds/m2. Seed fall >10000 seeds/m2.month was recorded from January until May, with further seed falls recorded in June and July. The impact of seed production on seed banks was assessed by estimating seed banks in the seed production quadrats before and after seed fall. Seed banks in 4 of the 6 sites decreased in year 2, although seed numbers at 1 damp site increased markedly. Defoliation from mid-December until February, April or June prevented seed production, reducing seed banks by 34% over 7 months. Seed banks in undefoliated plots increased by 3300 seeds/m2, although seed fall was estimated at >114 000 seeds/m2. Emergence of GPG seedlings from artificially established and naturally occurring, persistent seed banks was recorded for 3 years from bare and vegetated treatment plots. Sown seeds showed high levels of innate dormancy and only 4% of seeds emerged when sown immediately after collection. Longer storage of seeds after collection resulted in more seedlings emerging. Estimates of persistent seed banks ranged from 1650 to about 21260 seeds/m2. Most seedlings emerged in spring or autumn and this was correlated with rainfall but not with ambient temperatures. Rates of seed bank decline in both bare and vegetated treatment plots was estimated by fitting exponential decay curves to seed bank estimates. Assuming no further seed inputs, it was estimated that it would take about 3 and 5 years, respectively, for seed banks to decline to 150 seeds/m2 in bare and vegetated treatments.

scholarly journals The Potential of GRASP/GARRLiC Retrievals for Dust Aerosol Model Evaluation: Case Study during the PreTECT Campaign

2021 ◽  
Vol 13 (5) ◽  
pp. 873
Author(s):  
Dimitra Konsta ◽  
Alexandra Tsekeri ◽  
Stavros Solomos ◽  
Nikolaos Siomos ◽  
Anna Gialitaki ◽  
...  
Keyword(s):  
Model Evaluation ◽  
Dust Concentration ◽  
Saharan Dust ◽  
North Coast ◽  
Concentration Profiles ◽  
Future Studies ◽  
Aerosol Model ◽  
The North ◽  
Sun Photometer

We use the Generalized Retrieval of Aerosol Surface Properties algorithm (GRASP) to compare with dust concentration profiles derived from the NMME-DREAM model for a specific dust episode. The GRASP algorithm provides the possibility of deriving columnar and vertically-resolved aerosol properties from a combination of lidar and sun-photometer observations. Herein, we apply GRASP for analysis of a Saharan dust outburst observed during the “PREparatory: does dust TriboElectrification affect our ClimaTe” campaign (PreTECT) that took place at the North coast of Crete, at the Finokalia ACTRIS station. GRASP provides column-averaged and vertically resolved microphysical and optical properties of the particles. The retrieved dust concentration profiles are compared with modeled concentration profiles derived from the NMME-DREAM dust model. To strengthen the results, we use dust concentration profiles from the POlarization-LIdar PHOtometer Networking method (POLIPHON). A strong underestimation of the maximum dust concentration is observed from the NMME-DREAM model. The reported differences between the retrievals and the model indicate a high potential of the GRASP algorithm for future studies of dust model evaluation.

scholarly journals Thinner Sea Ice Contribution to the Remarkable Polynya Formation North of Greenland in August 2018

2021 ◽  
Author(s):  
Xiaoyi Shen ◽  
Chang-Qing Ke ◽  
Bin Cheng ◽  
Wentao Xia ◽  
Mengmeng Li ◽  
...  
Keyword(s):  
Sea Ice ◽  
Ice Cover ◽  
Reanalysis Data ◽  
Mean Value ◽  
Ocean Model ◽  
North Coast ◽  
Average Value ◽  
The North ◽  
Wind Sea ◽  
The One

AbstractIn August 2018, a remarkable polynya was observed off the north coast of Greenland, a perennial ice zone where thick sea ice cover persists. In order to investigate the formation process of this polynya, satellite observations, a coupled ice-ocean model, ocean profiling data, and atmosphere reanalysis data were applied. We found that the thinnest sea ice cover in August since 1978 (mean value of 1.1 m, compared to the average value of 2.8 m during 1978–2017) and the modest southerly wind caused by a positive North Atlantic Oscillation (mean value of 0.82, compared to the climatological value of −0.02) were responsible for the formation and maintenance of this polynya. The opening mechanism of this polynya differs from the one formed in February 2018 in the same area caused by persistent anomalously high wind. Sea ice drift patterns have become more responsive to the atmospheric forcing due to thinning of sea ice cover in this region.

Complex transformation of divorce in Vietnam under the forces of modernization and individualism

2021 ◽  
pp. 1-21
Author(s):  
Tran Thi Minh Thi
Keyword(s):  
Statistical Data ◽  
Marriage And Family ◽  
Male And Female ◽  
Rural Districts ◽  
The North ◽  
Complex Transformation ◽  
The Family ◽  
Social And Economic Development ◽  
Annual Population ◽  
And Gender

Abstract After more than four decades since its reunification since 1975, Vietnam has achieved remarkable results in social and economic development. With the rapid speed of recent modernization, society has loosened numerous old values related to the family and promoted individual freedoms. Marriage and family affairs, including divorce, have modernized with liberal characteristics. The paper examines the trends of divorce and reasons for divorce using statistical data from the Vietnam People's Supreme Court and from the government's annual population statistics. The analysis compiled and analysed a database of every divorce case at six urban and rural districts in Can Tho province. The analysis highlights changes in the reasons for divorce in the South in comparison with previous divorce studies in the North of Vietnam, discussed in relation to modernization, individualism and gender equality. The analysis is supported by interview data with thirty male and female divorcees.

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