machhali counter

swachaalit machhali counter ack vishesh avadhi mein ack vishesh nadee key saath gujarane vaali machhliyon kii sankhya koo maapane key liye swachaalit upkaran hain. aamtaur parr ack vishesh prajaati ruchi kii hoti haye.
machhali counters dwara adhyayan kii gaee ack mahatvapurna prajaati atlantic salmon haye. yeh prajaati apani paaristhitik roop seey kamjor sthiti aur anadromous jeevan shally key kaaran ruchi rakhti haye.
sanchaalan key tareeke.
machhali counters koo teen pramukh prakaron mein vibhajit kiya jaa sakata haih pratirodhi counter, optical counter aur hydroacostic counter.
pratirodhi counter.
ack pratirodhi counter ack nadee mein sanrachana key saath judaa huaa haye, ack udaaharan ack crump wear kaa gathan kartaa haye. machhali kii pratirodhakta paani kii tulanaa mein cumm hoti haye. isaliye, jaise hii machhali iss baadha koo paar karati haye, way antarnihit electrode koo paar karati hain, aur pratirodhakta mein antar electrode key aspas key kshetra mein sthaapit kshetra koo baadhit kartaa haye, antar-electrode pratirodh koo badal detaa haye. teen electrode key saath inn gadbadi koo ack gehuun key patthar key pull yaa anya sadhanon seey maapa jaa sakata haye, taaki machhali key aakar aur yatra kii disha kaa pataa lagaaya jaa sakey.
iss prakaar key machhali counters kaa vyaapak roop seey scotland mein atlantic salmon kii janganana aabaadi key liye upayog kiya jaataa haye, jahaan bund paripath television key saath tulanaa mein lagbhag 97 pratishat pataa lagaane kii darr dikhaai detee haye.
optical counter.
ack optical counter bhee nadee mein ack sanrachana key saath judaa huaa haye. haalaanki, paas electrode key bajaay, ack optical counter mein machhali prakaash key kuchh urdhvaadhar roop seey vyavasthit beemon koo baadhit karati haye. beam-break key pattern kaa upayog machhali key aakar, profile aur gati kii disha nirdhaarit karane key liye kiya jaa sakata haye.
infrared prakaash kaa upayog machhali kii gadbadi koo cumm karane key liye kiya jaataa haye kyonki way counter seey gujarate samay prakaash naheen dekhenge. jaba ack machhali prakaash kiranon key jaal key madhyam seey tairati haye, tou parinami sylhoot chhavi kaa upayog pratyek machhali key aakar kaa anuman lagaane key saath-saath ginati key liye kiya jaataa haye. pratyek vyaktigat chhavi koo niyantran ikai mein yaad kiya jaataa haye taaki baad mein ginati koo satyaapit kiya jaa sakey.
kuchh pranaaliyan jaise kii nadee nireekshak 1 aur 5 tasveeron yaa pratyek machhali kii ack chhoti video clip key beach pakadane key liye ack digital cameray koo trigger karane key liye avarakt scanner kaa upayog kartaa haye. computer taba swachaalit roop seey chhaviyon koo usa vyaktigat machhali key liye databases mein nihit anya jaankaari jaise aakar, gujarane kaa samay, gati, sylhoot chhavi, tapman aadi seey jodata haye.
camera ack vishesh surang mein sthaapit kiya gayaa haye jisamen camera aur roshni donon hain joe nirantar prakaash pradaan karate hain, aur machhali key liye cameray seey samaan doori. iss tarah, dinn key samay kii parwah kiye binaa machhali kii achchi chhaviyaan praapt karna sambhav haye.
vibhinn sthitiyon mein, optical counters kaa pradarshan 90 pratishat seey adhik honey key liye adhyayanon dwara nirdhaarit kiya gayaa haye. optical counter anya counter prakaron kii tulanaa mein machhali key aakar koo adhik sateek roop seey alag curr sakate hain aur isaliye vishesh roop seey upayogi hain jahaan prajaatiyon kaa mishran ack nadee mein rahata haye (udaaharan key liye nadiyaan jahaan salmon samudri trout key saath mill jaataa haye).
optical counters kaa pramukh nuksan paani key madhyam seey beemon kaa chhota pravesh haye, joe unake upayog koo sankeern nadee visheshtaon yaa nadee mein sanrachanaon taka seemit kartaa haye, ack udaaharan machhali kii seedhi haye.
hydroacostic counter.
hydrocostic counter sonar key siddhanton kaa upayog karke kaam karate hain. ack machhali koo dhwani srot dwara ashuddh kiya jaataa haye aur machhali seey pratibimbon kaa pataa paani key neeche microphone dwara lagaaya jaataa haye. pratibimb machhali key bheetar dhwani tarangon mein pratibadha mein achaanak parivartan key kaaran hotaa haye, vishesh roop seey swimbladder (pratibimb kaa 90 pratishat) parr.
jall-dhwanik counters koo nadee mein sanrachanaon kii aavashyakta naheen hoti haye, lekin kushal sthaapana aur prachalakon kii aavashyakta hoti haye. aadarsh sthalon parr kushal sthaapana key binaa jall-dhwanik counter galat hoe sakate hain. adhyayan aamtaur parr 50 seey 80 pratishat kii pehchaan darr kaa sanket dete hain, halanki ack adhyayan mein pataa lagaane kii darr 3 pratishat key roop mein cumm paaee gaee. prabhavsheelta nirdhaarit karane key liye saavdhaanipoorvak yojana aur poorv-adhyayan kaa upayog kiya jaanaa chaahiye.
nadee mein kissy bhee sanrachana kii aavashyakta kii kamee counters koo ack aakarshak prastaav banaati haye. aam taur parr alpakaalik yaa mausami adhyayanon key liye upayog kiya jaane vaalaa, kuchh sthitiyon mein ack deerghakaalik ganana kii aavashyakta hoti haye joe poorna roop seey sateek hoti haye, naa kewal saapeksh parivartan mein (udaaharan key liye, scotish atlantic salmon kaa pataa lagaane mein koee jall-dhwanik samvedak niyamit roop seey upayog naheen kiye jaate hain). inn udaharanon mein pratirodhakta yaa optical sensor koo prathamikta dee jaati haye. iss tarah key tarikon key liye aamtaur parr mahatvapurna awas sanshodhan kii aavashyakta hoti haye, jaise kii counter key madhyam seey machhali koo pravaahit karane key liye ack wayer kaa nirmaan.
swachaalit jall-dhwanik nigrani pranaliyon mein haal key vikas ney 18 maheene seey adhik kii avadhi key liye nirantar nigrani kii anumati dee haye. inn pranaliyon mein buddhiman nigrani aur vaastavik samay mein detta prasanskaran shamil haye, joe uchit sanchaalan aur sthiti aur parinamon kaa prakaashan sunishchit kartaa haye (jaise.jee. niyamit aadhar parr machhali ginati).
counters parr baithana.
nadee sanrachanaon mein.
pratirodhakta aur (vishesh roop seey) optical fish counters koo counter key pataa lagaane vaale chhidra key madhyam seey machhali koo nirdeshit karane key liye nadee mein sanrachanaon kii aavashyakta hoti haye. machhali kii seedhi aur borland machhali paas iss uddeshya key liye prabhaavi sanrachanaaen hain aur kabhi-kabhi nadee key bheetar ack praakritik pratibandh kaa upayog isi uddeshya key liye kiya jaa sakata haye. haalaanki, adhikansh counters key liye ack custom inn-river sanrachana kii aavashyakta hogi. aisee sabse prabhaavi sanrachanaon mein seey ack crump wear haye, joe ack trikoniya profile wear haye jise detector parr teji seey samtal pravaah sunishchit karane key liye design kiya gayaa haye.
nadee pranali key bheetar baithana.
atlantic salmon jaisi anadromous machhali kii ack prajaati apane poore jeevan mein ack vishesh prajanan sthal parr laut sakati haye. iska matlab haye kii badee nadiyon key bheetar kaafee alag aabaadi ack saath ack counter koo paar curr sakati haye. ack aabaadi joe ack vishesh sahayak nadee kaa upayog karati haye, gir sakati haye jabaki samagr sankhya spasht roop seey prabhaavit naheen hoti haye. usa vishesh sahayak nadee aur aabaadi key prabandhan key mudde kissy kaa dhyaan naheen jaate hain. kull milakar prajaatiyon key bajaay vyaktigat aabaadi kii ginati key liye counter lagaae jaane chaahiye, taaki aabaadi gir jaae aur thheek honey kaa pataa lagaaya jaa sakey.
vaikalpik tareeke.
swachaalit machhali counters key parinamon koo poorak, pushti yaa kaee vaikalpik takneekon dwara pratisthaapit kiya jaa sakata haye, joe sateekta, laagat, jatilata aur tirchhe prabhaavon mein bhinn hoe sakate hain.

