CN107422329A - A kind of stock of fish acoustic sounding devices and methods therefor - Google Patents
A kind of stock of fish acoustic sounding devices and methods therefor Download PDFInfo
- Publication number
- CN107422329A CN107422329A CN201710214299.4A CN201710214299A CN107422329A CN 107422329 A CN107422329 A CN 107422329A CN 201710214299 A CN201710214299 A CN 201710214299A CN 107422329 A CN107422329 A CN 107422329A
- Authority
- CN
- China
- Prior art keywords
- ship
- stock
- echo sounder
- fishing rod
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/96—Sonar systems specially adapted for specific applications for locating fish
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The present invention provides a kind of stock of fish acoustic sounding device, including the ship for detection, and the detection device fixed by fixed fishing rod with ship, the ship side is arranged with fixed fishing rod, fixed fishing rod is connected with detection device, detection device includes nylon monofilament, echo sounder, balancing weight, transducer and data sink, echo sounder is connected by some nylon monofilaments, echo sounder lower end is provided with balancing weight, transducer is fixed on ship, data sink is placed in ship, this stock of fish acoustic sounding devices and methods therefor provided by the invention, the simple cost of device is low, detection efficient is high, visiting Time Measurement Unit stably will not fault localization object, the present apparatus can operate with different ships, and detection device can be adjusted, carry out the regulation of different depth, improve the precision of detection data.
Description
Technical field
The present invention relates to fisheries stock assessment technical field, especially a kind of stock of fish acoustic sounding device and its side
Method.
Background technology
Zhejiang is a big province in ocean, and oceanic area is 2.6 times of land-based area area, adjoins the East Sea, against national maximum
In-shore fishery-Zhoushan Fishing Ground, fishery resources species are planted up to more than 500.Sea fishery be in Zhejiang Province's marine economy portion compared with
A big traditional advantage industry, except indivedual years especially, marine capture production are occupied first of each coastal provinces and cities in the whole nation, complete always
State occupies critical role.Zhejiang Province fishing population about more than 200 ten thousand, fishing labour 800,000, and plunge into the commercial sea fishing fisherman 190,000, motor-driven fishing
More than 50,000, ship, therefore, the development that sea fishery is lasting, healthy, steady-state growth and fisherman's living standard to our province economy
Continuous improvement all has great importance.
In existing fisheries stock assessment technical field, such as a kind of North Pacific squid resource magnitude of recruitment Forecasting Methodology,
CN106228010A, a kind of North Pacific squid resource magnitude of recruitment Forecasting Methodology, it is characterized in that utilizing forage month feeding ground sea
The time sequential value and the correlation of this year CPUE time series of foreign envirment factor composition, select the ocean in the high marine site of correlation
The correlation factor that envirment factor influences as forage habitat on squid resources magnitude of recruitment；Utilize month spawning ground sea of laying eggs
The time sequential value and the correlation of next year CPUE time series of foreign envirment factor composition, select the ocean ring in the high marine site of correlation
The correlation factor that the border factor influences as spawning habitat on resource magnitude of recruitment；Utilize the suitable top layer in month spawning ground of laying eggs
Water temperature range accounts for the ratio of the gross area, the suitable surface temperature scope in forage month feeding ground accounts for the ratio of the gross area, with PS, PF
Express spawning ground feeding ground habitat suitable degree；With selected envirment factor and PS, PF various combination, BP is established respectively
Network structure forecast model, optimal models is selected, for medium-term and long-term fishery forescast.
This North Pacific squid resource magnitude of recruitment Forecasting Methodology of the invention, time-consuming length, cost is high, and prediction data is not smart
It is accurate.
The content of the invention
The technical problems to be solved by the invention are that providing one kind uses acoustic sounding, and detection data is accurate, wearability
Can be good, detection it is stable and will not fault localization object, can adjust the stock of fish acoustic sounding devices and methods therefor of measurement distance.
To solve above-mentioned existing technical problem, the present invention uses following scheme：A kind of stock of fish acoustic sounding device,
Including the ship for detection, and the detection device fixed by fixed fishing rod with ship, the ship side is arranged with
Fixed fishing rod, fixed fishing rod are connected with detection device, detection device including nylon monofilament, echo sounder, balancing weight, change
Energy device and data sink, echo sounder are connected by some nylon monofilaments, and echo sounder lower end is provided with counterweight
Block, transducer are fixed on ship, and data sink is placed in ship.
Be connected preferably, the nylon monofilament is arranged with fixed fishing rod with ship side, nylon monofilament also with regulation
Fishing rod connects, and a diameter of 0.2-0.5cm of nylon monofilament, length 80-120m, the angle of adjacent nylon monofilament is 28-32 °,
The depth for adjusting nylon monofilament with adjusting fishing rod by fixed fishing rod and declining, the diameter for strengthening nylon monofilament improve nylon monofilament
Intensity prevents hydraulic pressure or the larger damage nylon monofilament of resistance to water-flow, and improves the stabilization of echo sounder.
Preferably, the balancing weight is located at the 1-2m immediately below echo sounder, the weight of balancing weight is 5-8kg,
It is determined that echo sounder is sunk in seawater, prevent that echo sounder is unstable by flow force, influence the detection to echo.
Preferably, it is wireless to be provided with GPS in the echo sounder, echo sounder by GPS wirelessly and data receiver
Device connects, and echo sounder upper end is in triangular shape, and echo sounder surface is provided with one layer of water-tight corrosion-proof coating, wireless by GPS
Data transfer, simplicity is stable, and echo sounder upper end is designed into triangular shape is easy to adjust depth, water when preventing from stretching
The excessive damage echo sounder of pressure and nylon monofilament.
Preferably, the water-tight corrosion-proof coating is made up of following component and its parts by weight：Polyester acrylate resin 35-50
Part, aluminate cement 12-20 parts, titanium dioxide 6-10 parts, PEI 0.2-0.7 parts, zinc oxide 3-8 parts, acrylic acid diformazan
Amino ethyl ester 0.2-0.6 parts, superfine alumina silicate 2-6 parts, poly- MTES 0.1-0.3 parts, 3- pentanediol list isobutyls
Acid esters 2-5 parts, water 18-30 parts, prevent echo sounder from working in the seawater for a long time by seawater corrosion, moisture be impregnated with to
Echo sounder is damaged in echo sounder, and wherein poly- MTES and PEI pass through acrylic acid two
Methylamino ethyl ester has the function that to improve its anti-wear performance, prevents the damaged surfaces extruded during pull-up by seawater, prolong
Its long service life.
Preferably, the fixed fishing rod uses modulation carbon bar with regulation fishing rod, fishing line length is 80-120cm, is passed through
The position of fishing line length adjustment echo sounder in the seawater, the fixation fishing rod of both sides play certain stabilization, and regulation fishes
Pole is located at directly over echo sounder, is easy to adjust echo sounder.
A kind of method of stock of fish acoustic sounding, comprises the following steps：
1）The monitoring range that goes to sea is adjusted, it is sea water advanced, adjust the depth of determination echo sounder of the fixed fishing rod with adjusting fishing rod；
2）Setting is gone to sea detective path length, and detective path length >=5 ×；
3）Moved after going to sea by setting path, and by echo sounder collect transducer to the bottom acoustics Image Data,
It is wirelessly transmitted to by GPS in data sink；
4）Catch the collection for carrying out fingerling sample in diverse location by fishing net after detection terminates；
5）By step 3）Data acquisition and step 4）Fingerling data acquisition, draw detected marine site the stock of fish synthesis comment
Estimate result.
Preferably, the step 3）The translational speed of ship is 5-13km/h in middle detection process, prevents excessive velocities
Cause ship periphery current too fast, influence the stability of echo sounder in the seawater, and transducer can send stable surpass
Frequency of sound wave, improve the accurate of detection data.
Compared with prior art, beneficial effects of the present invention：This stock of fish acoustic sounding device provided by the invention
And its method, the simple cost of device is low, and detection efficient is high, has so performance of high intensity, makes it have service life length
Advantage, because its experimental data is in non-linear, its mechanism of action is still to be tested, visit Time Measurement Unit stably will not fault localization object,
The present apparatus can operate with different ships, and can adjust detection device, carry out the regulation of different depth, improve the essence of detection data
Accuracy.
Present invention employs above-mentioned technical proposal to provide a kind of stock of fish acoustic sounding devices and methods therefor, compensate for existing
There is the deficiency of technology, it is reasonable in design, it is easy to operate.
Figure of description
Fig. 1 is the structural representation of the present invention.
Description of reference numerals：1st, ship；2nd, fixed fishing rod；3rd, detection device；4th, nylon monofilament；5th, echo sounder；6、
Balancing weight；7th, transducer；8th, data sink；9th, fishing rod is adjusted；10th, GPS is wireless.
Embodiment
It is described in further detail below in conjunction with drawings and examples：
Embodiment 1：
As shown in figure 1, a kind of stock of fish acoustic sounding device, including the ship 1 for detection, and pass through fixed fishing rod 2
The detection device 3 fixed with ship 1, the side of ship 1 are arranged with fixed fishing rod 2, and fixed fishing rod 2 connects with detection device 3
Fixation is connect, detection device 3 includes nylon monofilament 4, echo sounder 5, balancing weight 6, transducer 7 and data sink 8, echo
Survey meter 5 is connected by some nylon monofilaments 4, and the lower end of echo sounder 5 is provided with balancing weight 6, and transducer 7 is fixed on ship
On 1, data sink 8 is placed in ship 1.
The nylon monofilament 4 is arranged with fixed fishing rod 2 with the side of ship 1 and is connected, and nylon monofilament 4 is also with adjusting fishing rod 9
Connection, a diameter of 0.2cm of nylon monofilament 4, length 80m, the angle of adjacent nylon monofilament 4 is 28 °, passes through fixed fishing rod 2
The depth of the decline of nylon monofilament 4 is adjusted with regulation fishing rod 9, strengthening the intensity of the diameter raising nylon monofilament 4 of nylon monofilament 4 prevents
Hydraulic pressure or the larger damage nylon monofilament 4 of resistance to water-flow, and improve the stabilization of echo sounder 5.
The balancing weight 6 is located at the 1.5m immediately below echo sounder 5, and the weight of balancing weight 6 is 5kg, it is determined that will return
Acoustic detection instrument 5 is sunk in seawater, is prevented that echo sounder 5 is unstable by flow force, is influenceed the detection to echo.
GPS wireless 10 is provided with the echo sounder 5, echo sounder 5 passes through GPS wireless 10 and data sink 8
Connection, the upper end of echo sounder 5 is in triangular shape, and the surface of echo sounder 5 is provided with one layer of water-tight corrosion-proof coating, wireless by GPS
10 data transfers, simplicity is stable, and the upper end of echo sounder 5 is designed into triangular shape is easy to adjust depth, when preventing stretching
The excessive damage echo sounder 5 of pressure and nylon monofilament 4 of water.
The water-tight corrosion-proof coating is made up of following component and its parts by weight：35 parts of polyester acrylate resin, aluminic acid salt solution
12 parts of mud, 6 parts of titanium dioxide, 0.2 part of PEI, 3 parts of zinc oxide, 0.2 part of dimethylaminoethyl acrylate, superfine alumina silicate
2 parts, 0.1 part of poly- MTES, 2 parts of 3- pentanediol mono isobutyrates, 18 parts of water, when preventing that echo sounder 5 is long
Between work in the seawater by seawater corrosion, moisture has been impregnated with to damaging echo sounder 5, and enhancing in echo sounder 5
The wearability avoided, prevent the damaged surfaces extruded during pull-up by seawater.
For the fixed fishing rod 2 with regulation fishing rod 9 using modulation carbon bar, fishing line length is 80cm, is adjusted by fishing line length
The position of whole echo sounder 5 in the seawater, the fixation fishing rod 2 of both sides play certain stabilization, and regulation fishing rod 9 is located at back
Directly over acoustic detection instrument 5, it is easy to adjust echo sounder 5.
A kind of method of stock of fish acoustic sounding, comprises the following steps：
1）The monitoring range that goes to sea is adjusted, it is sea water advanced, adjust the depth of determination echo sounder 5 of the fixed fishing rod 2 with adjusting fishing rod 9
Degree；
2）Setting is gone to sea detective path length, and detective path length >=5 ×；
3）Moved after going to sea by setting path, and transducer 7 is collected to the acoustics Number of Images at the bottom by echo sounder 5
According to being transmitted by GPS wireless 10 to data sink 8；
4）Catch the collection for carrying out fingerling sample in diverse location by fishing net after detection terminates；
5）By step 3）Data acquisition and step 4）Fingerling data acquisition, draw detected marine site the stock of fish synthesis comment
Estimate result.
The step 3）The translational speed of ship 1 is 10km/h in middle detection process, prevents excessive velocities from causing ship 1 week
Side current are too fast, influence the stability of echo sounder 5 in the seawater, and transducer 7 can send stable ultrasonic frequency,
Improve the accurate of detection data.
The diameter of nylon monofilament is not limited only to 0.2-0.5cm, should also include 0.21 or 0.22 or 0.23 or 0.24 or 0.25
Or 0.26 or 0.27 ... 0.49 or 0.5.
The prior art of routine techniques dawn known to those skilled in the art in the present invention, is not described in detail herein.
Embodiment 2：
A kind of stock of fish acoustic sounding devices and methods therefor, in real work, the transducer 7 that is equipped with by the bottom of ship 1
Changed by electric energy to acoustic energy, ultrasonic wave is sent to seawater, reflected after ultrasonic wave runs into object, pass through echo sounder
5 receive produce acoustics Image Data, echo sounder 5 by provided with GPS wireless 10 acoustics Image Data are transmitted to data
In receiver 8, and Sonar5 or Echoview analytical acoustics Image Data are utilized by operating personnel, echo sounder 5 can
The adjustment of position is carried out by adjusting fishing rod 9 according to the environment without marine site, echo sounder 5 on ship 1 also by symmetrically setting
Some fixation fishing rods 2 connect the stabilization of nylon monofilament 4, and echo sounder 5 is provided with one layer of water-tight corrosion-proof coating, can effectively prevent sea
Infringement of the water to echo sounder 5, strengthen working time and service life of the echo sounder 5 in seabed, under echo sounder 5
The stable echo sounder 5 of balancing weight 6 of end connection, and reduce fluctuation of the seawater to echo sounder 5.
Embodiment 3：
A kind of method of stock of fish acoustic sounding, step are：
1st, 2 months 14-15 days in 2017 carry out several zonule stock of fish detections to in-shore fishery in Zhoushan Of Zhejiang Province, are respectively
S1=52hm2,S2=113hm2,S3=142hm2；
2nd, detective path length is set respectively by formula, detective path length >=5 ×, L1=36.05, L2=
53.15, L3=59.55；
3rd, regional catches different fingerlings again respectively, and carries out the calculating of the average quality of different fingerlings：w1=
0.00021kg, w2=0.00048kg, w3=0.00016kg；
4th, by collection of the operating personnel to detection data, and Sonar5 or Echoview analytical acoustics Image Data, root are utilized
It is -67dB to set its threshold value according to TS distributions, and integration distribution is carried out to it according to the ratio shared by each subregion Mesichthyes, obtains water
The average fish abundance of each subregion in storehouse：A1=92467ind/hm2, A2=114126 ind/hm2, A3=131832ind/hm2；
5th, assessment B=S is carried out to Zhoushan Of Zhejiang Province in-shore fishery stock of fish total amount1×w1×A1+ S2×w2×A2+ S3×w3×
A3=10195.14kg。
Specific embodiment described herein is only to present invention explanation for example.The technical field of the invention
Technical staff can be made various modifications or supplement to described specific embodiment or be substituted using similar mode, but
Without departing from the present invention's or surmount scope defined in appended claims.
Claims (8)
1. a kind of stock of fish acoustic sounding device, including the ship for detection（1）, and pass through fixed fishing rod（2）With ship
Oceangoing ship（1）Fixed detection device（3）, it is characterised in that the ship（1）Side is arranged with fixed fishing rod（2）, fixed fishing rod
（2）With detection device（3）It is connected, detection device（3）Including nylon monofilament（4）, echo sounder（5）, balancing weight（6）、
Transducer（7）And data sink（8）, echo sounder（5）Pass through some nylon monofilaments（4）It is connected, reflection sounding
Instrument（5）Lower end is provided with balancing weight（6）, transducer（7）It is fixed on ship（1）On, data sink（8）It is placed in ship（1）It is interior.
A kind of 2. stock of fish acoustic sounding device according to claim 1, it is characterised in that the nylon monofilament（4）
With ship（1）Side is arranged with fixed fishing rod（2）Connection, nylon monofilament（4）Also with adjusting fishing rod（9）Connection, nylon monofilament
（4）A diameter of 0.2-0.5cm, length 80-120m, adjacent nylon monofilament（4）Angle be 28-32 °.
A kind of 3. stock of fish acoustic sounding device according to claim 1, it is characterised in that the balancing weight（6）Position
In echo sounder（5）At the 1-2m of underface, balancing weight（6）Weight be 5-8kg.
A kind of 4. stock of fish acoustic sounding device according to claim 1, it is characterised in that the echo sounder
（5）It is interior wireless provided with GPS（10）, echo sounder（5）It is wireless by GPS（10）With data sink（8）Connection, reflection sounding
Instrument（5）Upper end is in triangular shape, echo sounder（5）Surface is provided with one layer of water-tight corrosion-proof coating.
A kind of 5. stock of fish acoustic sounding device according to claim 4, it is characterised in that the water-tight corrosion-proof coating
It is made up of following component and its parts by weight：Polyester acrylate resin 35-50 parts, aluminate cement 12-20 parts, titanium dioxide 6-10
Part, PEI 0.2-0.7 parts, zinc oxide 3-8 parts, dimethylaminoethyl acrylate 0.2-0.6 parts, superfine alumina silicate 2-6
Part, poly- MTES 0.1-0.3 parts, 3- pentanediol mono isobutyrate 2-5 parts, water 18-30 parts.
A kind of 6. stock of fish acoustic sounding device according to claim 1, it is characterised in that the fixed fishing rod（2）
With adjusting fishing rod（9）Using modulation carbon bar, fishing line length is 80-120cm.
A kind of 7. method of stock of fish acoustic sounding, it is characterised in that comprise the following steps：
1）The monitoring range that goes to sea is adjusted, it is sea water advanced, adjust fixed fishing rod（2）With adjusting fishing rod（9）Determination echo sounder
（5）Depth；
2）Setting is gone to sea detective path length, and detective path length >=5 ×；
3）Moved after going to sea by setting path, and pass through echo sounder（5）Collect transducer（7）To the acoustics image at the bottom
Data, it is wireless by GPS（10）Transmit to data sink（8）It is interior；
4）Catch the collection for carrying out fingerling sample in diverse location by fishing net after detection terminates；
5）By step 3）Data acquisition and step 4）Fingerling data acquisition, draw detected marine site the stock of fish synthesis comment
Estimate result.
A kind of 8. method of stock of fish acoustic sounding according to claim 7, it is characterised in that the step 3）Middle spy
Ship during survey（1）Translational speed be 5-13km/h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710214299.4A CN107422329A (en) | 2017-04-01 | 2017-04-01 | A kind of stock of fish acoustic sounding devices and methods therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710214299.4A CN107422329A (en) | 2017-04-01 | 2017-04-01 | A kind of stock of fish acoustic sounding devices and methods therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107422329A true CN107422329A (en) | 2017-12-01 |
Family
ID=60423423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710214299.4A Pending CN107422329A (en) | 2017-04-01 | 2017-04-01 | A kind of stock of fish acoustic sounding devices and methods therefor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107422329A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109814111A (en) * | 2019-03-06 | 2019-05-28 | 中国科学院南京地理与湖泊研究所 | Echo sounder floating monitoring platform device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10221435A (en) * | 1997-02-05 | 1998-08-21 | Furuno Electric Co Ltd | Fish finder |
| CN203204178U (en) * | 2013-04-22 | 2013-09-18 | 中国水产科学研究院东海水产研究所 | Simple standard object correcting device for acoustic detector |
| CN104268786A (en) * | 2014-09-24 | 2015-01-07 | 中国科学院水生生物研究所 | Reservoir fish resource acoustics investigation method |
| CN104808212A (en) * | 2015-05-05 | 2015-07-29 | 深圳星宇远程定向测控技术有限公司 | Parametric-array remote fish finding system |
-
2017
- 2017-04-01 CN CN201710214299.4A patent/CN107422329A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10221435A (en) * | 1997-02-05 | 1998-08-21 | Furuno Electric Co Ltd | Fish finder |
| CN203204178U (en) * | 2013-04-22 | 2013-09-18 | 中国水产科学研究院东海水产研究所 | Simple standard object correcting device for acoustic detector |
| CN104268786A (en) * | 2014-09-24 | 2015-01-07 | 中国科学院水生生物研究所 | Reservoir fish resource acoustics investigation method |
| CN104808212A (en) * | 2015-05-05 | 2015-07-29 | 深圳星宇远程定向测控技术有限公司 | Parametric-array remote fish finding system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109814111A (en) * | 2019-03-06 | 2019-05-28 | 中国科学院南京地理与湖泊研究所 | Echo sounder floating monitoring platform device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Aglen et al. | How vertical fish distribution may affect survey results | |
| Burczynski et al. | Hydroacoustic assessment of the abundance and distribution of rainbow smelt in Lake Oahe | |
| Fabi et al. | An assessment of biomass and diel activity of fish at an artificial reef (Adriatic Sea) using a stationary hydroacoustic technique | |
| Beamesderfer et al. | Size selectivity and bias in estimates of population statistics of smallmouth bass, walleye, and northern squawfish in a Columbia River reservoir | |
| Gallager et al. | Ontogenetic changes in the vertical distribution of giant scallop larvae, Placopecten magellanicus, in 9-m deep mesocosms as a function of light, food, and temperature stratification | |
| Simpfendorfer | Movement and habitat use of smalltooth sawfish | |
| Sims | Filter-feeding and cruising swimming speeds of basking sharks compared with optimal models: they filter-feed slower than predicted for their size | |
| Benoit-Bird et al. | Diel migration dynamics of an island-associated sound-scattering layer | |
| CN107135988A (en) | A kind of fish features monitor system | |
| Finlay et al. | Spatial and temporal variability in water temperatures in the littoral zone of a multibasin lake | |
| Kimmerer et al. | Persistence of tidally-oriented vertical migration by zooplankton in a temperate estuary | |
| Ellis et al. | Preliminary observations on the life history and movements of skates (Rajidae) around the Island of Jersey, western English Channel | |
| CN104268786A (en) | Reservoir fish resource acoustics investigation method | |
| Andersen et al. | Diel vertical interactions between Atlantic cod Gadus morhua and sprat Sprattus sprattus in a stratified water column | |
| Francoeur et al. | Mussel-derived stimulation of benthic filamentous algae: The importance of nutrients and spatial scale | |
| CN107422329A (en) | A kind of stock of fish acoustic sounding devices and methods therefor | |
| CN110135720A (en) | A kind of quantitative evaluating method of enhancement effect | |
| Connolly et al. | Patterns of movement and habitat use by leafy seadragons tracked ultrasonically | |
| Langård et al. | Tracking individual herring within a semi-enclosed coastal marine ecosystem: 3-dimensional dynamics from pre-to post-spawning | |
| CN106371100A (en) | Maritime real-time measuring system for fish acoustic target strength | |
| Lantry et al. | Evaluation of offshore stocking of lake trout in Lake Ontario | |
| Siriraksophon et al. | Ecological aspects of oceanic squid, Sthenoteuthis oualaniensis (Lesson) in the South China Sea, area III: Western Philippines | |
| CN102907359A (en) | Method for obtaining acoustic evaluation data in artificial fish reefs | |
| Rezzolla et al. | Evaluation of a low-cost, non-invasive survey technique to assess the relative abundance, diversity and behaviour of sharks on Sudanese reefs (Southern Red Sea) | |
| Stevenson et al. | Inshore trawl survey of the west coast of the South Island and Tasman and Golden Bays, March–April 2009 (KAH0904) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171201 |
|
| RJ01 | Rejection of invention patent application after publication |