CN106371100A - Maritime real-time measuring system for fish acoustic target strength - Google Patents
Maritime real-time measuring system for fish acoustic target strength Download PDFInfo
- Publication number
- CN106371100A CN106371100A CN201610686203.XA CN201610686203A CN106371100A CN 106371100 A CN106371100 A CN 106371100A CN 201610686203 A CN201610686203 A CN 201610686203A CN 106371100 A CN106371100 A CN 106371100A
- Authority
- CN
- China
- Prior art keywords
- fish
- net cage
- target strength
- acoustic target
- time measurement
- 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
-
- 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
- G01S15/86—Combinations of sonar systems with lidar systems; Combinations of sonar systems with systems not using wave reflection
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
Abstract
The invention discloses a maritime real-time measuring system for fish acoustic target strength, which comprises a net cage system for controlling the activity of fish; a fish probing system for measuring the target strength; a photographing system for recording the movement and the attitudes of the fish; an environmental parameter monitoring system for monitoring the water flow parameters; a transmission system for controlling the positions of the net cage and the environmental parameter monitoring system; and an external frame system for providing support. According to the invention, through the arrangements that a net cage with a flexible mouth is afloat on water flow, that the net cage is placed within the measurement range of the wave beams of an energy converter, that the transmission system regulates different measurement water depths and that the photographing system and the environmental parameter monitoring system monitor the attitudes of the fish, the water flow speed, the water flow direction, the temperature and the salinity, it is more likely to find the relationship between the fish target strength and their self-physiological change, the environmental change and the water depth through the measurement to the living fish. The maritime real-time measuring system for fish acoustic target strength can be widely applied to the field of aquatic products.
Description
Technical field
The present invention relates to aquatic products field, a kind of especially fish acoustic target strength sea real-time measurement system.
Background technology
Fishery resources survey, refers to the breeding of or colony individual to economic living in waters, growth, death, migration, divides
The investigation of cloth, quantity, habitat, the prospect developing and means etc., is to carry out aquatic product fishery and fishery resources
Basic work.Fishery acoustics is a kind of advanced fishery resources survey and assessment technology.
The target strength (target strength, ts) of Fish, when referring to that sound wave detects to Fish, apart from Fish sound
Learn at the outside 1m of central point, the ratio of reflection sound wave intensity and incident acoustic wave intensity.Target strength is the reflection of quantitative description Fish
The strong and weak physical quantity of sound wave ability, is by one of key parameter of fishery resources acoustic survey and assessment.The target of Fish is strong
It is relevant that degree moves attitude (with respect to the angle of incidence wave), body length, anatomical structure (form and dimension of fish glue) etc..Fish
Target strength research method generally comprises in-situ method, indoor water tank algoscopy and modelling.The measurement result of in-situ method can be directly
It is applied to resource investigation, but in measurement process, there is the impalpable problem of fingerling, therefore, the whole world is only to minority Fish at present
Target strength has carried out in site measurement.Indoor water tank algoscopy is conducive to the target strength of researching fish and the pass of motor behavior
System, but the harsh experiment condition of needs and loaded down with trivial details preparation, the anechoic tank if desired for standard and the Fish sample lived, that is,
Need from sea, Fish sample to be taken back land laboratory and keeps its vigor, and in reality, many Fish leave original ocean ring
Border several tens minutes or a few hours just cannot survive, the target strength of therefore many marine fishes cannot by original position in situ method and
Tank net cage method measures.Modelling is to carry out theory using the scattering principle of sound wave to the target strength of Fish approximately to grind
Study carefully, do not limited by measuring condition, have the characteristics that flexible it is easy to carry out, be the effective supplement to assay method,
But its result of study is typically not directly applicable resource investigation, need to be used in combination with other assay methods.Therefore, only with
Existing technology cannot be measured to the target strength of the live body fish individual of capture in existing marine investigation in time in real time.
Content of the invention
In order to solve above-mentioned technical problem, the purpose of the present invention is: provides one kind marine can measure live body Fish sound in real time
Learn the measuring system of target strength.
The technical solution adopted in the present invention is: a kind of fish acoustic target strength sea real-time measurement system, includes:
Net cage system, for controlling fish movement region；
Fish in net cage system are carried out target strength measurement for producing sound wave by fish finding instrument system；
Camera system, for recording and preserving the motion of measured Fish and attitude in net cage system；
Environment parameter monitoring system, for monitoring flow rate of water flow, flow direction, temperature and salinity；
Drive system, for controlling the position of net cage system and environment parameter monitoring system；
Outside framework system, for fixed cage system and camera system.
Further, the frame of described net cage system is welded using stainless steel silk, and the etting between frame adopts acoustics saturating
Bright material is made.
Further, the frame of described net cage system is enclosed with deadener.
Further, the lower end of described net cage system is connected with weight plummet.
Further, described net cage top is provided with the active open of measured Fish turnover.
Further, described fish finding instrument system includes the first mobile workstation, transceiver, kuppe and transducer, described
Kuppe is arranged at the surface of net cage system, and described transducer is arranged in kuppe, and described transducer is by transceiver even
It is connected to the first mobile workstation.
Further, described camera system includes the second mobile workstation and multiple high definition underwater camera, the plurality of
High definition underwater camera is connected with the second mobile workstation by data cable.
Further, described environment parameter monitoring system includes gps locating module and conductivity-temperature-depth system, and described gps positions mould
Block and conductivity-temperature-depth system are all connected with the first mobile workstation.
Further, described drive system includes the first electric winch system, and described first electric winch system is used for controlling
The lifting of net cage system processed.
Further, described drive system includes the second electric winch system, and described second electric winch system is used for controlling
The lifting of conductivity-temperature-depth system processed.
The invention has the beneficial effects as follows: present system passes through the net cage being provided with the survivor of a murder attempt is suspended in current, juxtaposition
In the wave beam measurement range of transducer, by drive system adjust different water depth be used for measuring, simultaneously utilize camera system and
Environment parameter monitoring system is monitored to fish body attitude, flow rate of water flow, flow direction, temperature and salinity etc., thus more easily by
The marine measurement in real time of live body Fish is found Fish target strength and its own physiological change, environmental change, between the depth of water
Relation.
Brief description
Fig. 1 is present system structured flowchart；
Fig. 2 is the structural representation of present system one specific embodiment.
In figure: 1, weight plummet, 2, weight plummet connecting line, 3, stainless steel strip (lower plane four, upper plane four), 4, no
Rust steel bar (totally 3), 5, high-definition camera (three underwater camera) under water, 6, the transparent net cage of acoustics, 7, connecting line (totally 4),
8th, connecting line, 9, transducer, 10, kuppe, 11, kuppe bar, 12, the fix bar of kuppe, 13, fixed anchor point, 14, data
Transmission cable, 15, transceiver, the 16, first mobile workstation, 17, gps locating module, 18, hull, 19, data cable,
20th, the second mobile workstation, 21, CD writer, 22, conductivity-temperature-depth system, 23, connecting line, 24, rustless steel steel wire rope, 25, fixing anchor
Point, 26, ship side messenger wire support bar, the 27, second winch motor and line wheel, the 28, second control terminal, 29, connecting line, 30, pulley,
31st, the first winch motor and line wheel, the 32, first control terminal, 33, standard ball, 34, nylon rope, 35, acoustic wave beam.
Specific embodiment
Below in conjunction with the accompanying drawings the specific embodiment of the present invention is described further:
With reference to Fig. 1, a kind of fish acoustic target strength real-time measurement system, include:
Net cage system, for controlling fish movement region；
Fish in net cage system are carried out target strength measurement for producing sound wave by fish finding instrument system；
Camera system, for recording and preserving the motion of measured Fish and attitude in net cage system；
Environment parameter monitoring system, for monitoring flow rate of water flow, flow direction, temperature and salinity；
Drive system, for controlling the position of net cage system and environment parameter monitoring system；
Outside framework system, for fixed cage system and camera system.As shown in Fig. 2 outside framework system is by eight stainless steel strips 3
Composition, plays support, connects and fixing effect to net cage and video camera.
It is further used as preferred embodiment, the frame of described net cage system is welded using stainless steel silk, frame
Between etting made using acoustics transparent material；Wherein stainless steel silk is made with 316 steel of seawater corrosion resistance.
With reference to Fig. 2, net cage 6 is the cube that the length of side is 100cm, and 12 frames are with the welding of diameter 1mm stainless steel material
Become, etting is made with the nylon wire of diameter 0.4mm.
It is further used as preferred embodiment, the frame of described net cage system is enclosed with deadener, for example with rubber
Glue deadener wraps up, and thickness is 5cm, it is possible to decrease the interference acoustic signals of the reflection of net cage system.
It is further used as preferred embodiment, the lower end of described outside framework system is connected with weight plummet, can effectively stop
The swing of the net cage that current cause.
It is further used as preferred embodiment, described net cage top is provided with the active open of measured Fish turnover.
With reference to Fig. 2, it is further used as preferred embodiment, described fish finding instrument system includes the first mobile workstation
16th, transceiver 15, kuppe 10 and transducer 9, described kuppe 10 is arranged at the surface of net cage system, described transducer 9
It is arranged in kuppe 10, described transducer 9 is connected to the first mobile workstation 16 by transceiver 15.
Kuppe 10 passes through kuppe bar 11, kuppe fix bar 12 is fixed on the fixed anchor point 13 of hull 18；Water conservancy diversion
Cover 10 and stainless kuppe bar 11, kuppe fix bar 12 are fixed in the middle part of the ship side on hull 18 with welding manner, lead
Stream cover 10 is 50cm with the horizontal range of ship side.For wooden ship, transducer can also be fixed by rustless steel approach screw
Middle part on the right of ship side.
Live body Fish are put in net cage 6 and are placed in immediately below transducer 9 by net cage, and position in net cage for the live body Fish can
Can be randomly it is possible to be located at any position in net cage, so net cage 6 upper surface will ensure with the distance on transducer 9 surface
The width of acoustic wave beam 35 can be completely covered net cage 6, for improving the level sensitivity to target fish for the transducer 9, can increase net
Case 6 and the distance on transducer 9 surface, make the beam broadening in net cage, and now, the echo-signal that transducer 9 receives just is mixed with
The noise signal of more net cage scatterings, so will first record the echo of abortive haul case before each measurement.Marine in-site measurement
Fish body to be avoided during target strength as far as possible to damage, keep its state as far as possible consistent with naturalness.Use by standard method before measurement
Nylon rope 34 suspention standard ball 33 carries out system compensation below transducer 9.
As shown in Fig. 2 kuppe 10 is carried out also by the fixed anchor point 25 setting rustless steel steel wire rope 24 on hull 18
Reinforce.
With reference to Fig. 2, it is further used as preferred embodiment, described camera system includes the second mobile workstation 20 He
Multiple high definition underwater camera 5, the plurality of high definition underwater camera 5 passes through data cable 19 and the second mobile workstation
20 connections.
The target strength of Fish is very close with the relation of the angle of incident acoustic wave with it, and its athletic posture is to target strength
Value has very important impact, therefore in system setting high definition underwater camera be used for observing, record and preserve tested in net cage
The motion of amount Fish and attitude angle are in order to the change of subsequent analysis Fish target strength and its relation with attitude inclination angle, tool
Standby recording function.Equably fixation is placed in the bottom of net cage system to multiple high definition underwater camera 5, the second mobile workstation 20 and
Its external equipment controls the operative orientation of photographic head.
It is further used as preferred embodiment, described camera system also includes CD writer 21, can be used for imprinting high definition
The video data of underwater camera 5 collection.
It is further used as preferred embodiment, described environment parameter monitoring system includes gps locating module 17 and temperature
Salt depth instrument 22, described gps locating module 17 and conductivity-temperature-depth system 22 are all connected with the first mobile workstation 16.
Because temperature influences whether the motion of Fish, ocean current flow velocity can affect the net cage and fish body attitude in water, above
Fish target strength all can be led to change it is therefore desirable to the temperature of periodicity Timing measurement water body and salinity, to parse
The change of Fish target strength and its reason, calculate ocean current flow velocity and side by the translational speed at the accommodation of gps system real-time monitoring
Measured to, temperature and salinity by conductivity-temperature-depth system.
It is further used as preferred embodiment, described drive system includes the first electric winch system, described first
Electric winch system is used for controlling the lifting of net cage system.
It is further used as preferred embodiment, described drive system includes the second electric winch system, described second
Electric winch system is used for controlling the lifting of conductivity-temperature-depth system 22.
As shown in Fig. 2 described second electric winch system includes the second control terminal 28(direction switch control chamber and opens
Close power supply), the second winch motor and line wheel 27, pulley 30, ship side messenger wire support bar (3 sections are scalable) 26 and connecting line 29, even
Wiring is connected with conductivity-temperature-depth system 22 top；Connected by reinforced jacketed cable between second control terminal 28 and motor, reinforced
Jacketed cable specification is: 1.5 square centimeters of cross section, and 30 meters long；Described first electric winch and the second electric winch structure phase
Same, include the first control terminal 32, the first winch motor and line wheel 31, pulley, ship side messenger wire support bar and connecting line, connect
Line is connected with the top of net cage system, and winch line wheel is additionally provided with meter counter, for indicating the length of nylon wire in winch line wheel
Degree.
It is more than that the preferable enforcement to the present invention is illustrated, but the invention is not limited to described enforcement
Example, those of ordinary skill in the art can also make a variety of equivalents without prejudice on the premise of present invention spirit or replace
Change, these equivalent deformation or replacement are all contained in the application claim limited range.
Claims (10)
1. a kind of fish acoustic target strength sea real-time measurement system is it is characterised in that include:
Net cage system, for controlling fish movement region；
Fish in net cage system are carried out target strength measurement for producing sound wave by fish finding instrument system；
Camera system, for recording and preserving the motion of measured Fish and attitude in net cage system；
Environment parameter monitoring system, for monitoring flow rate of water flow, flow direction, temperature and salinity；
Drive system, for controlling the position of net cage system and environment parameter monitoring system；
Outside framework system, for fixed cage system and camera system.
2. a kind of fish acoustic target strength sea real-time measurement system according to claim 1 it is characterised in that: described
The frame of net cage system is welded using stainless steel silk, and the etting between frame is made using acoustics transparent material.
3. a kind of fish acoustic target strength sea real-time measurement system according to claim 2 it is characterised in that: described
The frame of net cage system is enclosed with deadener.
4. a kind of fish acoustic target strength sea real-time measurement system according to claim 2 it is characterised in that: described
The lower end of net cage system is connected with weight plummet.
5. a kind of fish acoustic target strength sea real-time measurement system according to claim 2 it is characterised in that: described
Net cage top is provided with the active open of measured Fish turnover.
6. a kind of fish acoustic target strength sea real-time measurement system according to claim 1 it is characterised in that: described
Fish finding instrument system includes the first mobile workstation, transceiver, kuppe and transducer, and described kuppe is arranged at net cage system
Surface, described transducer is arranged in kuppe, and described transducer is connected to the first mobile workstation by transceiver.
7. a kind of fish acoustic target strength sea real-time measurement system according to claim 1 it is characterised in that: described
Camera system includes the second mobile workstation and multiple high definition underwater camera, and the plurality of high definition underwater camera passes through number
It is connected with the second mobile workstation according to transmission cable.
8. a kind of fish acoustic target strength sea real-time measurement system according to claim 6 it is characterised in that: described
Environment parameter monitoring system includes gps locating module and conductivity-temperature-depth system, and described gps locating module and conductivity-temperature-depth system are all with first
Mobile workstation connects.
9. a kind of fish acoustic target strength sea real-time measurement system according to claim 1 it is characterised in that: described
Drive system includes the first electric winch system, and described first electric winch system is used for controlling the lifting of net cage system.
10. a kind of fish acoustic target strength sea real-time measurement system according to claim 8 it is characterised in that: institute
State drive system and include the second electric winch system, described second electric winch system is used for controlling the lifting of conductivity-temperature-depth system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610686203.XA CN106371100A (en) | 2016-08-18 | 2016-08-18 | Maritime real-time measuring system for fish acoustic target strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610686203.XA CN106371100A (en) | 2016-08-18 | 2016-08-18 | Maritime real-time measuring system for fish acoustic target strength |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106371100A true CN106371100A (en) | 2017-02-01 |
Family
ID=57878025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610686203.XA Pending CN106371100A (en) | 2016-08-18 | 2016-08-18 | Maritime real-time measuring system for fish acoustic target strength |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106371100A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108029600A (en) * | 2018-01-16 | 2018-05-15 | 广东联芯智能科技有限公司 | Culture diseases early warning robot and its application method |
| JPWO2020195467A1 (en) * | 2019-03-26 | 2020-10-01 | ||
| CN113219471A (en) * | 2021-04-09 | 2021-08-06 | 广东海洋大学 | Fish free state target intensity measuring device based on experiment basin |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201237640Y (en) * | 2008-07-03 | 2009-05-13 | 中国水产科学研究院南海水产研究所 | Air guide sleeve of fishery detector transducer |
| CN103118246A (en) * | 2012-11-20 | 2013-05-22 | 刘雁春 | Fishery submarine video monitor |
| CN103461232A (en) * | 2013-08-08 | 2013-12-25 | 中国水产科学研究院长江水产研究所 | Testing device and testing method for testing environmental preference behavior of fish |
| CN204631245U (en) * | 2015-03-31 | 2015-09-09 | 浙江海洋学院 | A kind of device measuring acoustic target strength under fish multi-angle state |
| CN204811496U (en) * | 2015-05-28 | 2015-12-02 | 浙江海洋学院 | Purse seine monitoring device breeds |
| CN105137442A (en) * | 2015-08-21 | 2015-12-09 | 中国水产科学研究院南海水产研究所 | Fishery exploration acoustic image sharing system for fishery science investigation boat and a method |
| CN105785968A (en) * | 2014-12-25 | 2016-07-20 | 中国科学院声学研究所 | Marine ranch acoustic monitoring system and monitoring method |
-
2016
- 2016-08-18 CN CN201610686203.XA patent/CN106371100A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201237640Y (en) * | 2008-07-03 | 2009-05-13 | 中国水产科学研究院南海水产研究所 | Air guide sleeve of fishery detector transducer |
| CN103118246A (en) * | 2012-11-20 | 2013-05-22 | 刘雁春 | Fishery submarine video monitor |
| CN103461232A (en) * | 2013-08-08 | 2013-12-25 | 中国水产科学研究院长江水产研究所 | Testing device and testing method for testing environmental preference behavior of fish |
| CN105785968A (en) * | 2014-12-25 | 2016-07-20 | 中国科学院声学研究所 | Marine ranch acoustic monitoring system and monitoring method |
| CN204631245U (en) * | 2015-03-31 | 2015-09-09 | 浙江海洋学院 | A kind of device measuring acoustic target strength under fish multi-angle state |
| CN204811496U (en) * | 2015-05-28 | 2015-12-02 | 浙江海洋学院 | Purse seine monitoring device breeds |
| CN105137442A (en) * | 2015-08-21 | 2015-12-09 | 中国水产科学研究院南海水产研究所 | Fishery exploration acoustic image sharing system for fishery science investigation boat and a method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108029600A (en) * | 2018-01-16 | 2018-05-15 | 广东联芯智能科技有限公司 | Culture diseases early warning robot and its application method |
| JPWO2020195467A1 (en) * | 2019-03-26 | 2020-10-01 | ||
| WO2020195467A1 (en) * | 2019-03-26 | 2020-10-01 | 古野電気株式会社 | Target measurement device and target measurement method |
| JP7444852B2 (en) | 2019-03-26 | 2024-03-06 | 古野電気株式会社 | Target measurement device and target measurement method |
| CN113219471A (en) * | 2021-04-09 | 2021-08-06 | 广东海洋大学 | Fish free state target intensity measuring device based on experiment basin |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Colbo et al. | A review of oceanographic applications of water column data from multibeam echosounders | |
| Demer et al. | Calibration of acoustic instruments. | |
| Foote et al. | Target strengths of Antarctic krill (E uphausia superba) at 38 and 120 kHz | |
| Fabi et al. | An assessment of biomass and diel activity of fish at an artificial reef (Adriatic Sea) using a stationary hydroacoustic technique | |
| CN110945533B (en) | Fish number measuring device, fish number measuring system, and fish number measuring method | |
| Wardle et al. | The muscle twitch and the maximum swimming speed of giant bluefin tuna, Thunnus thynnus L. | |
| Govinden et al. | Movement behaviour of skipjack (Katsuwonus pelamis) and yellowfin (Thunnus albacares) tuna at anchored fish aggregating devices (FADs) in the Maldives, investigated by acoustic telemetry | |
| CN105785968A (en) | Marine ranch acoustic monitoring system and monitoring method | |
| CN106371100A (en) | Maritime real-time measuring system for fish acoustic target strength | |
| Leis et al. | Ontogeny of in situ behaviours relevant to dispersal and population connectivity in larvae of coral-reef fishes | |
| CN114002686A (en) | Fish resource investigation method combining underwater acoustic detection and trawl sampling | |
| Parsons et al. | Detection of sharks with the Gemini imaging sonar | |
| Kimura et al. | Apparent source level of free-ranging humpback dolphin, Sousa chinensis, in the South China Sea | |
| McClatchie et al. | Target strength of an oily deep-water fish, orange roughy (Hoplostethus atlanticus) I. Experiments | |
| Benoit-Bird | Dynamic 3-dimensional structure of thin zooplankton layers is impacted by foraging fish | |
| CN108196086B (en) | Measuring device for measuring surface flow velocity of water body by using probe of inverted Doppler current meter and using method of measuring device | |
| Nielsen et al. | Hydroacoustic ex situ target strength measurements on juvenile cod (Gadus morhua L.) | |
| CN110116785B (en) | Positioning sinking-floating type ocean detection device and detection positioning platform positioning method thereof | |
| RU2697430C1 (en) | Hydroacoustic system for fish monitoring in cages of industrial aquaculture enterprises | |
| CN104880710B (en) | A kind of device of follow-on measurement acoustic target strength | |
| Jørgensen et al. | Acoustic target strength of capelin measured by single-target tracking in a controlled cage experiment | |
| WO2019017132A1 (en) | Growth state measurement apparatus and growth state measurement method | |
| Cailliet et al. | A review of the methods and problems of quantitative assessment of Loligo opalescens | |
| Landmann et al. | Laboratory Tests on Wave Forces and Accelerations of a Three-Bay Long-Line Aquaculture Systems in Offshore Conditions | |
| Mason et al. | Integration of technologies for understanding the functional relationship between reef habitat and fish growth and production |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170201 |