scholarly journals ASPEK PERTUMBUHAN UNDUR-UNDUR LAUT, Hippa adactyla DARI PANTAI BERPASIR KABUPATEN KEBUMEN

2013 ◽  
Vol 13 (2) ◽  
Author(s):  
Ali Mashar Dan Yusli Wardiatno
Keyword(s):  
Growth Pattern ◽  
Sustainable Management ◽  
Sandy Beach ◽  
Biological Information ◽  
Swash Zone ◽  
Area Method ◽  
The World ◽  
Biological Component ◽  
Swept Area ◽  
Ecology And Economy

ABSTRAKUndur-undur laut atau mole crab merupakan komponen penting dari komunitas makrobentos di pantaiberpasir terbuka, baik di daerah tropis maupun bermusim empat di seluruh dunia.Undur-undur lautmempunyai fungsi ekonomi dan ekologi.Salah satu jenis undur-undur laut yang banyak dijumpai diIndonesia adalah jenis Hippa adactyla.Karena fungsi ekonomi dan ekologi undur-undur laut pentinguntuk dilestarikan, salah satu informasi penting yang dibutuhkan adalah pola pertumbuhan undurundurlaut.Penelitian dilakukan di Pantai Bocor, Kecamatan Buluspesantren, KabupatenKebumen.Pengambilan sampel undur-undur laut dilakukan setiap bulan dari bulan Maret hingga Mei2012, yang dilakukan dengan metode penyapuan dengan bantuan alat tangkap sorok pada daerahpantai berpasir yang terpengaruh gerakan gelombang (swash zone) (swept area method).Hasilpenelitian menunjukkan bahwa undur-undur laut Hippa adactyla yang tertangkap mempunyai kisaranpanjang karapas antara 15 mm hingga 40 mm, dengan ukuran yang paling banyak tertangkap beradapada selang panjang karapas 24-26 mm.Nisbah kelamin undur-undur laut di lokasi penelitianmendekati 1 (1,035) atau tergolong seimbang, dimana jumlah undur-undur laut jantan relatif seragamdengan undur-undur laut betina.Kondisi ini juga menunjukkan bahwa kondisi populasi undur-undurlaut di lokasi penelitian relatif stabil. Pola pertumbuhan undur-undur laut Hippa adactylaseluruhnya,baik jantan, betina, maupun gabungan, adalah isometrik, artinya pertambahan panjang undur-undurlaut relatifsama dengan pertambahan bobotnya.Kata kunci: Hippa adactyla, pantai berpasir, undur-undur lautABSTRACTMole crabs are one of important biological component among macrobenthos communityinhabiting sandy beach, both in tropic or temperate area all over the world. They playsignificant ecology and economy role in their habitat. One of Indonesian mole crabs is Hippaadactyla. Due to its ecological and economical function of the crab, it is neede to study thepopulation growth pattern for biological information based sustainable management. One ofimportant biological information is growth pattern. The research was conducted in PantaiBocor, Kecamatan Buluspesantren, Kabupaten Kebumen. Sample collections were donemonthly during March – May 2012. Sampling was done by swep area method by means oflocal fishermen gear called sorok along swash zone. The results showed that the carapacelength of collected crabs ranged from 19 – 34 mm, with the highest abundance within range of29 – 30 mm. Female dominated the sex ratio. The F/M ratio was 0.244. The growth pattern ofmale was isometric, while in female it was negative allometric. However, combining datashowed that the growth patern of the population was negative allometric, so its length growsfaster than its weight.Keywords: Hippa adactyla, sandy beach, mole crab, southern part of Jawa

scholarly journals ASPEK PERTUMBUHAN UNDUR-UNDUR LAUT, Emerita emeritus DARI PANTAI BERPASIR KABUPATEN KEBUMEN

2013 ◽  
Vol 13 (1) ◽  
Author(s):  
Ali Mashar Dan Yusli Wardiatno
Keyword(s):  
Growth Pattern ◽  
Sustainable Management ◽  
Carapace Length ◽  
Sandy Beach ◽  
Biological Information ◽  
Swash Zone ◽  
Male And Female ◽  
Combining Data

ABSTRAKUndur-undur laut merupakan bagian dari kelompok krustasea yang menghuni pantai berpasirdi daerah intertidal.Undur-undur laut mempunyai fungsi ekonomi dan ekologi.Salah satu jenisundur-undur laut yang banyak dijumpai di Indonesia adalah jenis Emerita emeritus.Mengingatpentingnya fungsi ekonomi dan ekologi undur-undur laut, maka kajian tentang polapertumbuhan undur-undur laut penting dilakukan sebagai dasar untuk mengelola pemanfaatanundur-undur laut secara lestari.Penelitian ini dilakukan di Pantai Bocor, KecamatanBuluspesantren, Kabupaten Kebumen.Pengambilan sampel undur-undur laut dilakukan setiapbulan dari bulan Maret hingga Mei 2012.Pengambilan sampel undur-undur laut dilakukandengan metode penyapuan dengan bantuan alat tangkap sorok pada daerah pantai berpasiryang terpengaruh gerakan gelombang (swash zone).Hasil penelitian menunjukkan bahwaundur-undur laut Emerita emeritus yang tertangkap mempunyai kisaran panjang karapasantara 19 mm hingga 34 mm, dengan ukuran yang paling banyak tertangkap pada selangpanjang 29-30 mm. Undur-undur laut di lokasi penelitian didominasi oleh undur-undur lautbetina dengan nisbah kelamin jantan/betina adalah 0,246.Pola pertumbuhan undur-undur lautEmerita emeritus jantan adalah isometrik, sedangkan undur-undur laut betina adalahalometrik negatif.Secara keseluruhan, pola pertumbuhan undur-undur laut Emerita emeritusadalah alometrik negatif. Artinya pertumbuhan panjang undur-undur laut lebih cepatdibanding pertumbuhan bobotnyaKata kunci: Emerita emeritus, pantai berpasir, undur-undur laut, selatan JawaABSTRACTMole crab is one of crustaceans inhabiting sandy intertidal. The crabs has both ecological andeconomical significance role. One common mole crab found in Indonesia is Emerita emeritus.Due to its ecological and economical function of the crab, it is neede to study the populationgrowth pattern for biological information based sustainable management. The research wasconducted in Pantai Bocor, Kecamatan Buluspesantren, Kabupaten Kebumen. Samplecollections were done monthly during March – May 2012. Sampling was done by swep areamethod by means of local fishermen gear called sorok along swash zone. The results showedthat the carapace length of collected crabs ranged from 19 – 34 mm, with the highestabundance within range of 29 – 30 mm. In terms of sex, female were the dominant with sexratio beween male and female was 0.246. The growth pattern of male was isometric, while infemale it was negative allometric. However, combining data showed that the growth patern ofthe population was negative allometric; meaning that its length grows faster than its weight.Keywords: Emerita emeritus, sandy beach, mole crab, southern part of Jawa

scholarly journals EFFECTS OF SEASONAL VARIATIONS ON SANDY BEACH GROUNDWATER TABLE AND SWASH ZONE SEDIMENT TRANSPORT

2014 ◽  
Vol 1 (34) ◽  
pp. 59
Author(s):  
Norasman Othman ◽  
Ahmad Khairi Abd Wahab ◽  
Mohamad Hidayat Jamal
Keyword(s):  
Sediment Transport ◽  
Seasonal Variations ◽  
Sandy Beach ◽  
Groundwater Table ◽  
Swash Zone

scholarly journals Studi Karakteristik Morfometrik Ikan Julung-Julung (Hemiramphus Archipelagicus) Di Daerah Intertidal Teluk Ekas

2016 ◽  
Vol 16 (2) ◽  
Author(s):  
I Gde Suryawan, Mahrus Dan Karnan
Keyword(s):  
Intertidal Zone ◽  
Morphological Characteristic ◽  
Morphometric Characteristic ◽  
Young Fish ◽  
Beach Seine ◽  
Area Method ◽  
Total Length ◽  
Lower Jaw ◽  
Upper Jaw ◽  
Swept Area

ABSTRAKPenelitian ini bertujuan untuk mengetahui karakteristik morfometrik dan meristik ikan julung-julung di Teluk Ekas, Lombok Timur. Sampel penelitian berjumlah 165 ikan yang di tangkap pada daerah intertidal dengan metode swept area menggunakan pukat pantai (beach seine) di tiga stasiun. Karakteristik morfologi yang terlihat dengan jelas pada ikan julung-julung ini yaitu memiliki rahang bawah dengan warna merah pada ujungnya dan memiliki ukuran yang jauh lebih panjang jika dibandingkan dengan rahang atasnya. Hasil pengukuran karakteristik morfometrik menunjukkan bahwa ikan julung-julung yang terdapat pada daerah intertidal perairan Teluk Ekas merupakan ikan muda (juvenile) dengan frekuensi panjang total (PT) tertinggi terdapat pada ukuran 13,1-15 cm. Kesimpulan dari penelitian ini menunjukkan bahwa ikan julung-julung di daerah intertidal Teluk Ekas memiliki karakteristik morfometrik yang hampir sama dengan ikan julung-julung pada umumnya. Kata-kata kunci: Ikan Julung-Julung, Karakteristik, Meristik, Morfometrik   ABSTRACT This research intended to know the morphometric and meristic characteristic of jumping halfbeak at Ekas Bay, East Lombok. The sample of this research consisted of 165 fishes which caught at intertidal zone using swept area method with beach seine in three stations. The morphological characteristic which can be seen clearly on jumping halfbeak has lower jaw with red tip and longer than its upper jaw. The results of measurement of morphometric characteristic proved that jumping halfbeak at intertidal zone of Ekas Bay were young fish (juvenile) total length highest frequency on range of 13,1-15 cm. The conclusion of this research is jumping halfbeak at the intertidal zone of Ekas Bay has the similar characteristic morphometric to the general one. Keywords: Characteristic, Jumping halfbeak, Meristic, Morphometric

scholarly journals Length-weight Relationship, Growth Pattern and Condition Factor of the Silver Catfish Chrysichthys nigrodigitatus (Lacepède, 1803) from Lower River Benue, Nigeria

2018 ◽  
pp. 1-8
Author(s):  
Edem, Edem Thomas ◽  
Ofunama, Preye ◽  
Eyo, Victor `Oscar
Keyword(s):  
Population Dynamics ◽  
Growth Pattern ◽  
Sustainable Management ◽  
Condition Factor ◽  
B Value ◽  
Health Condition ◽  
Artisanal Fisheries ◽  
Allometric Growth ◽  
Silver Catfish ◽  
Weight Relationship

This study was carried out to evaluate the length-weight relationship, growth pattern and condition factor of the Silver catfish Chrysichthys nigrodigitatus from the Lower River Benue Makurdi, Nigeria. A total of 200 freshly caught specimens of C. nigrodigitatus were collected between July 2013 and September 2013 from the catches of the artisanal fisheries at landing points in Wadata Market, Makurdi. Results obtained showed that the “b” value for the males was 1.6067 while that of the females was 1.6791 and combined sexes 1.7371, indicating a negative allometric growth for this species. Correlation coefficient (r) obtained for males (0.9651), 0.9517 (females) and 0.9329 (pooled sexes) showed a positive significant relationship between length and weight of C. nigrodigitatus. Monthly mean condition factor (K), indicate that C. nigrodigitatus were in good physiological health condition. In conclusion, the baseline data on the length-weight relationship, condition factor of C. nigrodigitatus from the lower River Benue provided in this study is crucial in the sustainable management of this species in the River. Also, these findings will be useful in evaluating the population dynamics, stock and the aquaculture potential of C. nigrodigitatus for future purpose.

scholarly journals Growth pattern of three species of Mullets (Pisces: Mugilidae) in Sombreior River, Rivers State, Niger Delta, Nigeria

2020 ◽  
Vol 5 (2) ◽  
pp. 68-72 ◽  
Author(s):  
Henry Eyina Dienye ◽  
Olaniyi Alaba Olopade
Keyword(s):  
Fish Species ◽  
Growth Pattern ◽  
Niger Delta ◽  
Condition Factor ◽  
Well Being ◽  
Biological Information ◽  
Allometric Growth ◽  
Good State ◽  
Abiotic And Biotic Factors ◽  
Rivers State

Length-weight relationships (LWRs) and condition factor are important biological information to assess the growth pattern and wellbeing of fish species influenced by numerous abiotic and biotic factors. To date, no data on the LWRs and condition of mullets in Sombreior River, Niger Delta. Hence, this research was conducted to determine abundance, length–weight relationship and Fulton’s condition factor (K) of three species of fish belonging to family Mugilidae in Sombreior River, Nigeria. There were a total of 248 samples from five sampling stations for a period of months. Fish species were of various sizes ranging from 24.66±0.40 to 26.35±0.26cm in length and 141.41±6.30 to 161.56±5.87g in weight. For the three species, slope (b) values ranged from 2.18 to 2.68 indicating a negative allometric growth of all fish species. The mean condition factor ranged from 0.89±0.03 forsix Mugil cephalus to 0.93±0.03 for Parachelon grandisquamis while the coefficients of determination (R2) of the LWR regressions ranged between 0.64 (Neochelon falcipinnis) and 0.79 (Parachelon grandisquamis). It was concluded that the mullets in the Sombreior River had a negative allometric growth pattern and the condition is showing the species were in good state of well-being since mean K values are  greater than 1.

Sydney Harbour: a review of anthropogenic impacts on the biodiversity and ecosystem function of one of the world

2015 ◽  
Vol 66 (12) ◽  
pp. 1088 ◽  
Author(s):  
M. Mayer-Pinto ◽  
E. L. Johnston ◽  
P. A. Hutchings ◽  
E. M. Marzinelli ◽  
S. T. Ahyong ◽  
...  
Keyword(s):  
Sustainable Management ◽  
Anthropogenic Impacts ◽  
Habitat Modification ◽  
Indigenous Species ◽  
Benthic Community Structure ◽  
Organic Contamination ◽  
The World ◽  
Sydney Harbour ◽  
Biodiversity And Ecosystem Function ◽  
Non Indigenous Species

Sydney Harbour is a hotspot for diversity. However, as with estuaries worldwide, its diversity and functioning faces increasing threats from urbanisation. This is the first synthesis of threats and impacts in Sydney Harbour. In total 200 studies were reviewed: 109 focussed on contamination, 58 on habitat modification, 11 addressed non-indigenous species (NIS) and eight investigated fisheries. Metal concentrations in sediments and seaweeds are among the highest recorded worldwide and organic contamination can also be high. Contamination is associated with increased abundances of opportunistic species, and changes in benthic community structure. The Harbour is also heavily invaded, but invaders’ ecological and economic impacts are poorly quantified. Communities within Sydney Harbour are significantly affected by extensive physical modification, with artificial structures supporting more NIS and lower diversity than their natural equivalents. We know little about the effects of fishing on the Harbour’s ecology, and although ocean warming along Sydney is among the fastest in the world, we know little about how the ecosystem will respond to warming. The interactive and cumulative effects of stressors on ecosystem functioning and services in the Harbour are largely unknown. Sustainable management of this iconic natural system requires that knowledge gaps are addressed and translated into coherent environmental plans.

scholarly journals Human Development XI: The Structure of the Cerebral Cortex. Are There Really Modules in the Brain?

2007 ◽  
Vol 7 ◽  
pp. 1922-1929 ◽  
Author(s):  
Tyge Dahl Hermansen ◽  
Søren Ventegodt ◽  
Isack Kandel
Keyword(s):  
Cerebral Cortex ◽  
Brain Activity ◽  
Sensory Cortex ◽  
Biological Information ◽  
Human Consciousness ◽  
Primary Sensory Cortex ◽  
Sensory Maps ◽  
The World ◽  
The Brain ◽  
The Universe

The structure of human consciousness is thought to be closely connected to the structure of cerebral cortex. One of the most appreciated concepts in this regard is the Szanthagothei model of a modular building of neo-cortex. The modules are believed to organize brain activity pretty much like a computer. We looked at examples in the literature and argue that there is no significant evidence that supports Szanthagothei's model. We discuss the use of the limited genetic information, the corticocortical afferents termination and the columns in primary sensory cortex as arguments for the existence of the cortex-module. Further, we discuss the results of experiments with Luminization Microscopy (LM) colouration of myalinized fibres, in which vertical bundles of afferent/efferent fibres that could support the cortex module are identified. We conclude that sensory maps seem not to be an expression for simple specific connectivity, but rather to be functional defined. We also conclude that evidence for the existence of the postulated module or column does not exist in the discussed material. This opens up for an important discussion of the brain as functionally directed by biological information (information-directed self-organisation), and for consciousness being closely linked to the structure of the universe at large. Consciousness is thus not a local phenomena limited to the brain, but a much more global phenomena connected to the wholeness of the world.

scholarly journals Comparison of biomass estimates from multiple stratification approaches in a swept area method for Pacific saury Cololabis saira in the western North Pacific

2020 ◽  
Vol 86 (3) ◽  
pp. 445-456 ◽  
Author(s):  
Midori Hashimoto ◽  
Hideaki Kidokoro ◽  
Satoshi Suyama ◽  
Taiki Fuji ◽  
Hiroomi Miyamoto ◽  
...  
Keyword(s):  
North Pacific ◽  
Western North Pacific ◽  
Pacific Saury ◽  
Area Method ◽  
Cololabis Saira ◽  
Swept Area

scholarly journals Recreational Use of Spa Thermal Waters: Criticisms and Perspectives for Innovative Treatments

2018 ◽  
Vol 15 (12) ◽  
pp. 2675 ◽  
Author(s):  
Federica Valeriani ◽  
Lory Marika Margarucci ◽  
Vincenzo Romano Spica
Keyword(s):  
Sustainable Management ◽  
Natural Waters ◽  
State Of The Art ◽  
Thermal Waters ◽  
Natural Properties ◽  
The World ◽  
Management Alternative ◽  
Ancient Times ◽  
Alternative Approaches ◽  
Recreational Use

Natural spa springs are diffused all over the world and their use in pools is known since ancient times. This review underlines the cultural and social spa context focusing on hygiene issues, public health guidelines and emerging concerns regarding water management in wellness or recreational settings. The question of the “untouchability” of therapeutic natural waters and their incompatibility with traditional disinfection processes is addressed considering the demand for effective treatments that would respect the natural properties. Available strategies and innovative treatments are reviewed, highlighting potentials and limits for a sustainable management. Alternative approaches comprise nanotechnologies, photocatalysis systems, advanced filtration. State of the art and promising perspectives are reported considering the chemical-physical component and the biological natural complexity of the spa water microbiota.

Studio-based Approach to Developing Tourist Destinations Enriched With Objects of Cultural and Natural Heritage

10.12737/2869 ◽  
2014 ◽  
Vol 3 (1) ◽  
pp. 36-39
Author(s):  
Беседин ◽  
D. Besedin
Keyword(s):  
Sustainable Development ◽  
Sustainable Management ◽  
Tourist Destination ◽  
Natural Heritage ◽  
Tourist Destinations ◽  
The World ◽  
Ulyanovsk Region ◽  
Set Up

With the case of Ulyanovsk Region and the «Symbirsk- Ukyanovsk» tourist destination as an example, the author demonstrates how the studio of tourism, set up at the premises of the Department of UNESCO-UNITWIN network, operates to provide sustainable development for a tourist destination and to advance the UNESCO’s concept related to sustainable management of objects belonging to the world cultural and natural heritage.

Sign in / Sign up

Export Citation Format

Share Document