CN209824913U - Marine benthos sampling device - Google Patents
Marine benthos sampling device Download PDFInfo
- Publication number
- CN209824913U CN209824913U CN201920281254.3U CN201920281254U CN209824913U CN 209824913 U CN209824913 U CN 209824913U CN 201920281254 U CN201920281254 U CN 201920281254U CN 209824913 U CN209824913 U CN 209824913U
- Authority
- CN
- China
- Prior art keywords
- screen
- sampling device
- layer
- steel ring
- marine
- 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.)
- Active
Links
Landscapes
- Catching Or Destruction (AREA)
Abstract
The utility model provides a marine benthos sampling device, which comprises a guy cable part and a metal buckle and is characterized by comprising a body, wherein the upper part of the body is provided with a fixed sleeve, a fixed steel ring is arranged in the fixed sleeve, the fixed sleeve is internally connected with a first screen part, and a second screen part is connected below the fixed sleeve; the fixed steel ring is provided with a connecting part, the connecting part is connected with metal buckles, and a pull rope part is arranged between the metal buckles; a blocking part is arranged below the second screen part, a fastening steel ring is arranged outside the blocking part, and the lower end of the second screen part is arranged between the blocking part and the fastening steel ring; the baffle plate is characterized in that a first collecting part is connected below the baffle part, a second collecting part is connected below the first collecting part, and an opening and closing part is arranged below the second collecting part. This device can separate the collection to the great sea benthonic metazoan of volume and the small benthonic small animal of small volume, the effectual efficiency that improves the sampling.
Description
Technical Field
The utility model belongs to the technical field of biological sampling, concretely relates to marine benthos sampling device.
Background
Marine benthic ecosystems have higher biodiversity than water, and 90% of marine invertebrates are known as benthic organisms. The marine benthos is generally a general term for living organisms which live in the bottom, the bottom surface or the bottom of a water area of marine sediments in all or most of the life history, and can be divided into benthos, benthos and super benthos, and occupies two habitats of hard bottom (rock bottom) and soft bottom (mud and sand bottom). Offshore biodiversity is subject to both global changes and human activities, with relatively drastic changes. China lacks systematic research on the diversity of marine benthos and background data of the diversity of the marine benthos. As the scholars point out, if we can not find out the current situation of marine biodiversity and do not know what kind of change can happen to the species, then the research on the change of marine ecosystem and global change influence in the next 20 years has no rationale.
In the prior art. When marine benthos is collected, the adopted device is an 'A-trawl device', in the actual benthos trawl collection process, the trawl device is usually directly hung and tied on the side of a ship board of an investigation ship through 2 ropes, and the A-trawl device is dragged by the investigation ship to carry out benthos collection operation. The device has the following defects when collecting marine benthos: because the port (namely the acquisition port) of the attritor trawl device is always in an open state, benthos in the trawl device is easily influenced by sea current and water flow in the process of being pulled upwards after the device finishes acquisition, so that the benthos is separated from the port of the device; in the process that the ship drags the Oldham trawl apparatus, seabed sediments entering the trawl along with benthos easily block meshes of the trawl, so that water flow is difficult to penetrate through the trawl, and the Oldham trawl apparatus is difficult to collect the benthos.
Therefore, a novel marine benthos sampling device is urgently needed.
SUMMERY OF THE UTILITY MODEL
In view of the above, the utility model provides a marine benthonic organism sampling device, this device can separate and collect the aquatic benthonic metazoan with bigger volume and the benthonic small animal with small volume, has effectively improved the efficiency of sampling; simultaneously can be through the inside clean ball of the second screen cloth layer of setting can be continuous rotatory to constantly collide with the second screen cloth layer through the arc suddenly strip, can effectively hit submarine sediment from the mesh of second screen cloth layer off, avoid blockking up, and accessible first collection portion, second collection portion, the portion that opens and shuts improve and drag the terminal stability of in-process device of this device at the ship.
The technical scheme of the utility model is that: a marine benthos sampling device comprises a guy cable part and a metal buckle and is characterized by comprising a body, wherein the upper part of the body is provided with a fixed sleeve, a fixed steel ring is arranged in the fixed sleeve, a first screen part is connected inside the fixed sleeve, and a second screen part is connected below the fixed sleeve; the fixed steel ring is provided with a connecting part, the connecting part is connected with metal buckles, and a pull rope part is arranged between the metal buckles; a blocking part is arranged below the second screen part, and a fastening steel ring is arranged outside the blocking part and can be realized by any one of the prior art; the lower end of the second screen part is arranged between the baffle part and the fastening steel ring; the baffle plate is characterized in that a first collecting part is connected below the baffle part, a second collecting part is connected below the first collecting part, and an opening and closing part is arranged below the second collecting part.
In the utility model, the connection of the device and the ship is facilitated through the matching of the connecting parts of the guy cable part, the metal buckle and the fixed steel ring, and meanwhile, the device is provided with a stable supporting function through the function of the fixed steel ring; a collecting area can be formed by matching the first screen part, the second screen part and the blocking part, and marine benthonic animals which can pass through a screen with the size of 0.5-1mm are collected; the lower end of the second screen part is fixedly connected with the blocking part through the action of the fastening steel ring, when the second screen part needs to be cleaned, the fastening steel ring and the fixing steel ring can be disassembled, and the first screen part and the second screen part are taken out for cleaning, so that the operation is convenient; the first collection part can screen and collect marine benthic micro animals which can pass through the 20um screen mesh, and the marine benthic micro animals are finally gathered in the second collection part, and the opening and closing part below the second collection part is opened, so that the marine benthic micro animals and seawater can be collected into the sample container together; can also wash first collection portion outside through the sea water of collecting the place through the dismantlement separation of baffle portion and first collection portion, with the attached marine benthonic microfauna of third screen part wash into in the second collection portion, can improve the accuracy of collecting data. Simultaneously, the first collection portion, the second collection portion, the portion that opens and shuts of this device all adopt the metal material that has certain weight, can drag the terminal stability of in-process device of this device at the ship.
Specially, fixed steel ring is the detachable steel ring structure among the prior art, and the retaining member fixed connection that sets up through connecting portion among the prior art forms the steel ring, conveniently wears to locate fixed cover inside.
Furthermore, the horizontal section of the body is in an inverted trapezoid shape, and the body is of a hollow structure.
Further, the utility model discloses still including strengthening the strip, strengthen the strip symmetry and locate the body, strengthen being equipped with second screen cloth portion between the strip. Particularly, the second screen mesh parts are symmetrically arranged in the body through the symmetrical connection of the reinforcing strips and the second screen mesh parts. Specially, can be according to the needs of the degree of depth of trawl strengthen the inside metal block that sets up of strip, can ensure the utility model discloses the ocean bottom region of setting for is always at the in-process of sampling.
Furthermore, the second screen part comprises second screen layers which are symmetrically arranged and cleaning balls which are symmetrically arranged between the second screen layers, a hollow closed area can be formed between the second screen layers which are symmetrically arranged in the second screen part, and the moving range of the arranged cleaning balls can be limited.
In particular, the cleaning ball is a plastic cleaning ball in the prior art, and arc-shaped protruding strips are symmetrically arranged on the surface of the cleaning ball. Preferably, the second screen layer is a screen layer with the aperture of 0.5-1 mm. The second screen layer can only allow the entry of marine benthonic metazoan which can pass through the screen of 0.5-1mm by the limitation of the aperture of the mesh of the second screen layer. The utility model discloses in, the setting of cleaning ball can effectively solve the second screen mesh layer and drag at the ship the utility model discloses the in-process of device, together get into the mesh jam of this internal benthic deposit thing with the trawl along with benthic organism, cause rivers to be difficult to pass the trawl, lead to the device to be difficult to gather benthic organism's problem, at the in-process that the ship drags, under the effect of ocean current and rivers, the inside cleaning ball of second screen mesh layer can continuous rotation to through arc suddenly the strip collision with second screen mesh layer constantly, can effectively hit the benthic deposit thing from the mesh of second screen mesh layer, avoid blockking up.
Further, first collection portion is hollow structure, first collection portion is including the connecting block, braced frame, the refluence portion that connect gradually, braced frame is inside to be equipped with third screen cloth portion. Particularly, the connecting block is provided with internal threads, the lower part of the blocking part is provided with external threads, and the connecting block can be detachably connected with the threads on the lower part of the blocking part; braced frame provides the supporting role for third sieve net portion, third sieve net portion more is favorable to sifting out and making it enter into refluence portion, finally enters into the second collection portion through the marine benthonic microfauna that can pass through the 20um screen cloth.
Further, the third screen part comprises a third screen layer, a fourth screen layer and a fifth screen layer which are arranged in sequence.
Furthermore, the third screen layer is a screen layer with the aperture of 100um, the fourth screen layer is a screen layer with the aperture of 50um, and the fifth screen layer is a screen layer with the aperture of 20 um. Through the setting of third screen cloth layer, fourth screen cloth layer, fifth screen cloth layer and the restriction of mesh aperture, through the mode of successive layer screening, more be favorable to the small animal of the ocean benthonic of can passing through 20um screen cloth to get into.
Further, the first screen part is composed of a first screen layer, and the first screen layer is a screen layer with the aperture of 1 mm. The first screen layer can only allow the marine benthic metazoan which can pass through the 1mm screen to enter through the limitation of the aperture of the mesh of the first screen layer.
Furthermore, the opening and closing part comprises a fan-shaped separation blade and a cylindrical sleeve which are rotatably connected, the fan-shaped separation blade is provided with a notch, and the cylindrical sleeve is provided with a fan-shaped outlet. Preferably, the fan-shaped separation blade of portion that opens and shuts, cylinder cover accessible any prior art realize, make the position of fan-shaped separation blade breach and the position of the fan-shaped export of cylinder cover through rotatory cylinder cover, can open or closed portion that opens and shuts realizes that the small-size benthos intercommunication sea water of collecting pours the collecting vessel into together.
Furthermore, an annular zipper is arranged between the fixed sleeve and the first screen part, and a closed area can be formed among the first screen part, the body and the baffle part by closing the annular zipper, so that the collected benthos are prevented from being separated from the upper port of the body of the device due to the influence of sea current and water current in the process of upwards pulling up the benthos; the annular zip fastener is opened to the accessible, pours out the benthonic organism of collecting from the body is inside, is convenient for collect.
The device can separate and collect the benthonic metazoan with larger volume and the benthonic micro-animals with small volume, thereby effectively improving the sampling efficiency; simultaneously can be through the inside clean ball of the second screen cloth layer of setting can be continuous rotatory to constantly collide with the second screen cloth layer through the arc suddenly strip, can effectively hit submarine sediment from the mesh of second screen cloth layer off, avoid blockking up, and accessible first collection portion, second collection portion, the portion that opens and shuts improve and drag the terminal stability of in-process device of this device at the ship.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a partial structure of the present invention;
FIG. 3 is a schematic view of a partial structure of the present invention;
fig. 4 is a schematic view of a partial structure of the present invention;
fig. 5 is a schematic view of a partial structure of the present invention;
fig. 6 is a schematic view of a partial structure of the present invention;
fig. 7 is a partial structural schematic view of the present invention;
fig. 8 is a schematic view of a partial structure of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
A marine benthos sampling device comprises a guy cable part 1 and a metal buckle 2 and is characterized by comprising a body 3, wherein the upper part of the body is provided with a fixed sleeve 31, a fixed steel ring 4 is arranged in the fixed sleeve, a first screen part 32 is connected in the fixed sleeve, and a second screen part 33 is connected below the fixed sleeve; the fixed steel ring is provided with a connecting part 41 which is connected with metal buckles, and a guy cable part is arranged between the metal buckles; a baffle part 5 is arranged below the second screen part, and a fastening steel ring 6 is arranged outside the baffle part, particularly, the fastening steel ring can be realized by any prior art; the lower end of the second screen part is arranged between the baffle part and the fastening steel ring; the baffle plate is characterized in that a first collecting part 7 is connected below the baffle plate, a second collecting part 8 is connected below the first collecting part, and an opening and closing part 9 is arranged below the second collecting part.
In the utility model, the connection of the device and the ship is facilitated through the matching of the connecting parts of the guy cable part, the metal buckle and the fixed steel ring, and meanwhile, the device is provided with a stable supporting function through the function of the fixed steel ring; a collecting area can be formed by matching the first screen part, the second screen part and the blocking part, and marine benthonic animals which can pass through a screen with the size of 0.5-1mm are collected; the lower end of the second screen part is fixedly connected with the blocking part through the action of the fastening steel ring, when the second screen part needs to be cleaned, the fastening steel ring and the fixing steel ring can be disassembled, and the first screen part and the second screen part are taken out for cleaning, so that the operation is convenient; the first collection part can screen and collect marine benthic micro animals which can pass through the 20um screen mesh, and the marine benthic micro animals are finally gathered in the second collection part, and the opening and closing part below the second collection part is opened, so that the marine benthic micro animals and seawater can be collected into the sample container together; can also wash first collection portion outside through the sea water of collecting the place through the dismantlement separation of baffle portion and first collection portion, with the attached marine benthonic microfauna of third screen part wash into in the second collection portion, can improve the accuracy of collecting data. Simultaneously, the first collection portion, the second collection portion, the portion that opens and shuts of this device all adopt the metal material that has certain weight, can drag the terminal stability of in-process device of this device at the ship.
Specially, fixed steel ring is the detachable steel ring structure among the prior art, and the retaining member fixed connection that sets up through connecting portion among the prior art forms the steel ring, conveniently wears to locate fixed cover inside.
Further, the horizontal section of the body 3 is in an inverted trapezoid shape, and the body is in a hollow structure.
Further, the utility model discloses still including strengthening the strip 35, strengthen the strip symmetry and locate the body, strengthen being equipped with second screen cloth portion 33 between the strip. Particularly, the second screen mesh parts are symmetrically arranged in the body through the symmetrical connection of the reinforcing strips and the second screen mesh parts.
Further, the second screen part 33 includes symmetrically arranged second screen layers 331 and cleaning balls 332 symmetrically arranged between the second screen layers, and a hollow closed area can be formed between the symmetrically arranged second screen layers inside the second screen part, which can limit the moving range of the arranged cleaning balls.
In particular, the cleaning ball is a plastic cleaning ball in the prior art, and the surface of the cleaning ball is symmetrically provided with arc-shaped protruding strips 3321. Preferably, the second screen layer is a screen layer with the aperture of 0.5-1 mm. The second screen layer can only allow the entry of marine benthonic metazoan which can pass through the screen of 0.5-1mm by the limitation of the aperture of the mesh of the second screen layer. The utility model discloses in, the setting of cleaning ball can effectively solve the second screen mesh layer and drag at the ship the utility model discloses the in-process of device, together get into the mesh jam of this internal benthic deposit thing with the trawl along with benthic organism, cause rivers to be difficult to pass the trawl, lead to the device to be difficult to gather benthic organism's problem, at the in-process that the ship drags, under the effect of ocean current and rivers, the inside cleaning ball of second screen mesh layer can continuous rotation to through arc suddenly the strip collision with second screen mesh layer constantly, can effectively hit the benthic deposit thing from the mesh of second screen mesh layer, avoid blockking up.
Further, the first collecting part 7 is of a hollow structure, the first collecting part comprises a connecting block 71, a supporting frame 72 and a backflow part 73 which are sequentially connected, and a third screen part 74 is arranged in the supporting frame. Particularly, the connecting block is provided with internal threads, the lower part of the blocking part is provided with external threads, and the connecting block can be detachably connected with the threads on the lower part of the blocking part; braced frame provides the supporting role for third sieve net portion, third sieve net portion more is favorable to sifting out and making it enter into refluence portion, finally enters into the second collection portion through the marine benthonic microfauna that can pass through the 20um screen cloth.
Further, the third screen part 74 includes a third screen layer 741, a fourth screen layer 742, and a fifth screen layer 743, which are sequentially provided.
Furthermore, the third screen layer is a screen layer with the aperture of 100um, the fourth screen layer is a screen layer with the aperture of 50um, and the fifth screen layer is a screen layer with the aperture of 20 um. Through the setting of third screen cloth layer, fourth screen cloth layer, fifth screen cloth layer and the restriction of mesh aperture, through the mode of successive layer screening, more be favorable to the small animal of the ocean benthonic of can passing through 20um screen cloth to get into.
Further, the first screen part 32 is composed of a first screen layer 321, and the first screen layer is a screen layer with a pore diameter of 1 mm. The first screen layer can only allow the marine benthic metazoan which can pass through the 1mm screen to enter through the limitation of the aperture of the mesh of the first screen layer.
Further, the opening and closing portion 9 includes a fan-shaped blocking piece 91 and a cylindrical sleeve 92 which are rotatably connected, the fan-shaped blocking piece is provided with a notch (not labeled), and the cylindrical sleeve is provided with a fan-shaped outlet (not labeled). Preferably, the portion that opens and shuts, fan-shaped separation blade, cylinder cover accessible any prior art realize, make the position of fan-shaped separation blade breach and the position of the fan-shaped export of cylinder cover through rotatory cylinder cover, can open or closed portion that opens and shuts realizes that the small-size benthos intercommunication sea water of collecting pours the collecting vessel into together.
Further, an annular zipper 34 is arranged between the fixed sleeve 31 and the first screen part 32, and a closed area can be formed among the first screen part, the body and the baffle part by closing the annular zipper, so that the collected benthos are prevented from being separated from the upper port of the body of the device due to the influence of sea current and water current in the process of being pulled upwards; the annular zip fastener is opened to the accessible, pours out the benthonic organism of collecting from the body is inside, is convenient for collect.
The device can separate and collect the benthonic metazoan with larger volume and the benthonic micro-animals with small volume, thereby effectively improving the sampling efficiency; simultaneously can be through the inside clean ball of the second screen cloth layer of setting can be continuous rotatory to constantly collide with the second screen cloth layer through the arc suddenly strip, can effectively hit submarine sediment from the mesh of second screen cloth layer off, avoid blockking up, and accessible first collection portion, second collection portion, the portion that opens and shuts improve and drag the terminal stability of in-process device of this device at the ship.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art. It should be noted that the technical features not described in detail in the present invention can be implemented by any prior art.
Claims (10)
1. A marine benthos sampling device comprises a guy cable part and a metal buckle and is characterized by comprising a body, wherein the upper part of the body is provided with a fixed sleeve, a fixed steel ring is arranged in the fixed sleeve, a first screen part is connected inside the fixed sleeve, and a second screen part is connected below the fixed sleeve; the fixed steel ring is provided with a connecting part, the connecting part is connected with metal buckles, and a pull rope part is arranged between the metal buckles; a blocking part is arranged below the second screen part, a fastening steel ring is arranged outside the blocking part, and the lower end of the second screen part is arranged between the blocking part and the fastening steel ring; the baffle plate is characterized in that a first collecting part is connected below the baffle part, a second collecting part is connected below the first collecting part, and an opening and closing part is arranged below the second collecting part.
2. The marine benthos sampling device of claim 1, wherein the horizontal cross-section of said body is an inverted trapezoid, said body being a hollow structure.
3. The marine benthos sampling device of claim 1, further comprising reinforcing strips symmetrically disposed on the body, wherein a second screen portion is disposed between the reinforcing strips.
4. The marine benthos sampling device of claim 3, wherein the second mesh section comprises symmetrically arranged second mesh layers, and cleaning balls symmetrically arranged between the second mesh layers.
5. The marine benthos sampling device of claim 1, wherein the first collection part is a hollow structure, the first collection part comprises a connecting block, a supporting frame and a backflow part which are connected in sequence, and a third screen part is arranged inside the supporting frame.
6. The marine benthos sampling device of claim 5, wherein the third screen section comprises a third screen layer, a fourth screen layer, and a fifth screen layer arranged in sequence.
7. The marine benthos sampling device of claim 6, wherein the third screen layer is a 100um screen layer, the fourth screen layer is a 50um screen layer, and the fifth screen layer is a 20um screen layer.
8. The marine benthos sampling device of claim 1, wherein said first mesh section is comprised of a first mesh layer, said first mesh layer being a mesh layer having an aperture of 1 mm.
9. The marine benthos sampling device of claim 1, wherein said opening and closing portion comprises a rotatably connected fan-shaped baffle and a cylindrical sleeve, said cylindrical sleeve being provided with a fan-shaped outlet.
10. The marine benthos sampling device of claim 1, wherein an annular zipper is provided between said retaining sleeve and said first screen section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920281254.3U CN209824913U (en) | 2019-03-06 | 2019-03-06 | Marine benthos sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920281254.3U CN209824913U (en) | 2019-03-06 | 2019-03-06 | Marine benthos sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209824913U true CN209824913U (en) | 2019-12-24 |
Family
ID=68905130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920281254.3U Active CN209824913U (en) | 2019-03-06 | 2019-03-06 | Marine benthos sampling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209824913U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111903626A (en) * | 2020-06-30 | 2020-11-10 | 中国水产科学研究院长江水产研究所 | Benthos sampling device and method |
| CN112535158A (en) * | 2020-11-23 | 2021-03-23 | 浙江省海洋水产研究所 | Marine benthos collection system |
| CN115644149A (en) * | 2022-11-08 | 2023-01-31 | 江苏海洋大学 | Jellyfish collection system |
| CN117796368A (en) * | 2024-03-01 | 2024-04-02 | 内蒙古自治区环境监测总站呼和浩特分站 | Automatic capture equipment of benthos |
-
2019
- 2019-03-06 CN CN201920281254.3U patent/CN209824913U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111903626A (en) * | 2020-06-30 | 2020-11-10 | 中国水产科学研究院长江水产研究所 | Benthos sampling device and method |
| CN112535158A (en) * | 2020-11-23 | 2021-03-23 | 浙江省海洋水产研究所 | Marine benthos collection system |
| CN115644149A (en) * | 2022-11-08 | 2023-01-31 | 江苏海洋大学 | Jellyfish collection system |
| CN117796368A (en) * | 2024-03-01 | 2024-04-02 | 内蒙古自治区环境监测总站呼和浩特分站 | Automatic capture equipment of benthos |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209824913U (en) | Marine benthos sampling device | |
| Methot | Frame trawl for sampling pelagic juvenile fish | |
| CN207427835U (en) | Planktonic organism and particle matter collection device suitable for Large River | |
| JP2009244200A (en) | Fine substance sampling device and its using method | |
| CN107593631A (en) | A kind of planktonic organism and particle matter collection device and application suitable for Large River | |
| Stauffer | Collecting gear for lake trout eggs and fry | |
| CN201509513U (en) | River fish collection device | |
| CN217450856U (en) | Benthos sieving mechanism | |
| US6223462B1 (en) | Device for sorting out marine species in fishing trawl | |
| Baker et al. | Trade-offs between gear selectivity and logistics when sampling nekton from shallow open water habitats: a gear comparison study | |
| CN204758332U (en) | Device that depth layer transition waters deposit and plankton jointly gathered | |
| CN205431671U (en) | Quick qualitative benthos collection net | |
| CN202773805U (en) | Sampler for river rapids benthos | |
| CN211832483U (en) | Offshore fish plankton gathers net many times | |
| CN215391165U (en) | Marine benthos sprays screening installation | |
| CN212232757U (en) | Large mollusk collection device | |
| CN113180019B (en) | Freshwater shrimp's equipment of catching in winter | |
| Uchida et al. | Comparison of microplastic sampling performance between a neuston net and a manta net | |
| AU2020101448A4 (en) | Drift net capable of quantitatively calculating fishery resources | |
| CN109870319B (en) | Biological collection system for migration, settlement and permanent planting of artificial fish reef area | |
| CN208016732U (en) | A kind of device for fishing for the fish that escape after electric fishing in streams | |
| CN221123921U (en) | Brook benthonic animal sample collection device | |
| Faber | A net for catching limnetic fry | |
| CN215270144U (en) | Combined shrimp catching cage | |
| Bowles et al. | Factors associated with accuracy in sampling fish eggs and larvae |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |