CN213068240U

CN213068240U - Portable coral reef area reef body surface algae group collection device

Info

Publication number: CN213068240U
Application number: CN202021662533.3U
Authority: CN
Inventors: 林先智; 胡思敏; 张黎; 刘胜
Original assignee: South China Sea Institute of Oceanology of CAS
Current assignee: South China Sea Institute of Oceanology of CAS
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2021-04-27
Anticipated expiration: 2030-08-11

Abstract

The utility model discloses a portable collecting device for reef surface algae in coral reef areas, which comprises a sample frame, a collector and a collector; the sample frame is a tubular structure with two open ends, the collector comprises an air bag and a collecting head, the air bag is connected with the collecting head through a hard pipe, an anti-backflow water valve is arranged on the hard pipe, and the collector is connected with the hard pipe between the air bag and the anti-backflow water valve through a hose. The utility model discloses a suction-type collection method can avoid EAM especially component loss such as deposit wherein to the water on every side in, guarantees the integrality of gathering the sample, increases quantitative data's the degree of accuracy, has also avoided the excessive destruction to coral reef bottom structure, has advantages such as nimble, easily carry, convenient operation.

Description

Portable coral reef area reef body surface algae group collection device

Technical Field

The utility model relates to a marine organism sample collection field, concretely relates to portable coral reef area reef body table living algae crowd collection system.

Background

Coral reefs, although occupying less than 0.1% of the ocean area, provide a habitat for 25% of marine life and are well known as "tropical rainforests in the ocean". It is estimated that about 100 million plants and animals live on the coral reef ecosystem, of which 4000 species of fish and 700 species of coral. An Epilithic Algal Matrix (EAM) is an important primary productivity in coral reef areas and is a unique and ubiquitous substrate type in coral reef areas. EAM is complex in composition, mainly comprises filamentous algae, microorganisms, sediments, organic debris, small invertebrates and the like, is one of main food sources of reef-dwelling phytophagous fishes, and is an important basis of a food net structure in a coral reef area. Meanwhile, the EAM usually covers the surface of dead coral after the coral is degraded, can occupy 30-80% of the basal area of the coral reef, interferes with recovery and population renewal of coral groups, and is one of the main substitute substrate types after the coral is degraded. Therefore, the community structure of the EAM and the change of the components of the EAM have important influence on the stability and the balance of the structural function of the coral reef ecosystem.

Although much research has been done on filamentous algae in EAMs in coral reef areas, research efforts on other components of EAM populations, particularly other than filamentous algae, are still in the beginning. The premise for studying colony structure and composition of EAMs is that field samples can be collected completely. Due to the complexity of the three-dimensional structure of the coral reef area, the traditional benthic organism collection mode (such as grab bucket) is difficult to effectively collect EAM of the coral reef area, and the destructive collection mode can also damage the coral reef substrate structure. Although the EAM can be collected through diving operation, the EAM contains a large amount of debris, sediments, microminiature organisms, sediments and the like, and the EAM is easily dissipated into the environment due to the influence of water flow in the collection process, so that the accuracy of the analysis result is influenced.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art method, the utility model aims at providing a portable coral reef area reef body surface algae group collection device.

In order to achieve the above object, the utility model adopts the following technical scheme:

a portable collecting device for surface algae in coral reef area reef body comprises a sample frame, a collector and a collector; the sample frame is a tubular structure with two open ends, the collector comprises an air bag and a collecting head, the air bag is connected with the collecting head through a hard pipe, an anti-backflow water valve is arranged on the hard pipe, and the collector is connected with the hard pipe between the air bag and the anti-backflow water valve through a hose.

As an improvement of the utility model, the sample frame adopts a circular PVC pipe.

Further, the sample frame has a diameter of 50mm to 100mm and a height of 50 mm. The sample frame has suitable height, under the prerequisite that does not influence the operation, avoids the sample loss to the surrounding water body under the rivers influence scrapes (brushes) to a certain extent.

As an improvement of the utility model, the gasbag be extrusion formula gasbag, produce the negative pressure through the extrusion gasbag and inhale the sample, go into the collector with the sample pump through the extrusion gasbag.

As an improvement of the utility model, the collector comprises a screen sleeve and an aseptic bag. The collector is designed in a replaceable way, can meet the requirements of different sampling purposes and multiple sampling, and has the advantages of wide application range, flexible operation and the like.

As an improvement of the utility model, the sleeve sieve tube or the aseptic bag is connected with the hose by screw thread. The design of the threaded interface can easily finish the assembly, disassembly and replacement of the collector underwater, can sample for many times, and the collected collector can cover the screw cap to prevent the loss of the sample.

As an improvement of the utility model, the screen sleeving pipe is a plurality of and is respectively provided with the screen meshes with different apertures. The different size organisms in the EAM, such as macroalgae, small invertebrates, microalgae, etc., can be separated, and the different size sediments in the substrate can be collected and separated.

As an improvement of the utility model, the collecting head is a replaceable scraping head or a replaceable brush head and is fixed on the end surface of the hard tube in a fast-assembling mode.

When the sampling device is used, the sample frame is placed in a sampling area of an EAM (easy access module) of a coral reef area, the collector is held by hands to extrude the air bag and keep the extrusion state, then the EAM on the surface of the coral reef area is scraped (brushed) by using the collecting head, the extrusion state of the air bag is released at the same time to form negative pressure, the EAM is sucked into the air bag and repeatedly extruded for many times until all the EAM in the sample frame is completely collected, and simultaneously, the sucked EAM sample is pumped into the collector under the action of the backflow prevention water valve to realize the collection of the EAM sample.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. the suction-type collection method can prevent EAM, particularly the sediment and other components in the EAM from dissipating into the surrounding water body, ensure the integrity of the collected sample, increase the accuracy of quantitative data and avoid excessive damage to the coral reef sediment structure.

2. The design of the replaceable collector can meet various and repeated sampling requirements, and has the advantages of flexibility, easiness in carrying, convenience in operation and the like.

Drawings

Fig. 1 is a schematic structural diagram of a portable gathering device for the surface algae of the coral reef area reef body in the embodiment, which comprises 3 sieve pipes 6 with different apertures and 1 aseptic bag 9;

description of reference numerals: 1-sample frame; 2-a pick head; 3-anti-backflow water valve 3; 4-air bag; 5-a hose; 6-sleeving a sieve tube; 7-a threaded interface; 8-screening the screen; 9-sterile bag.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

As shown in fig. 1, the portable collecting device for the superficial algae of the coral reef area reef body mainly comprises a sample frame, a collector and a collector.

The sample frame 1 is an open type circular bi-pass PVC pipe, the diameter of the pipe is 50-100 mm, the height of the pipe is about 50mm, the pipe is mainly used for measuring the biomass or the mass of EAM in unit area, the height of the pipe is suitable, and on the premise of not influencing operation, the sample scraped (brushed) by water flow is prevented from escaping into the surrounding water body to a certain extent. Preferably, the bottom of the sample frame 1 can be provided with a rubber ring, so that the sample frame 1 can be tightly attached to a sampling part, and the sample frame is suitable for uneven reef surfaces.

The collector mainly comprises an air bag 4 and a collecting head 2, the air bag 4 and the collecting head 2 are connected through a stainless steel pipe with a backflow-preventing water valve 3, the collecting head 2 is a replaceable metal scraper or brush and is fixed on the end face of the stainless steel pipe in a conventional quick connection mode, EAM and sediment are separated from the surface of the coral reef respectively in a scraping mode, a brushing mode and the like, the air bag 4 can be timely sucked into the EAM by negative pressure generated by extruding the air bag 4, the air bag 4 is repeatedly extruded, and meanwhile, due to the effect of the backflow-preventing water valve 3, sucked EAM samples are pumped into the collector, and the collection of the EAM samples is realized.

The collector is designed to be replaceable, and comprises a screen sleeving pipe 6 (the diameter is 100mm) and a sterile bag 9 (the volume is 2-5L) respectively, so that the requirements of different sampling purposes and multiple sampling are met. The screen sleeve 6 or the sterile bag 9 is connected to the stainless steel pipe between the air bag 4 and the backflow prevention water valve 3 through the hose 5. The hose 5 and the sterile bag 9 are both in transparent design, one end of the hose 5 connected with the sieve sleeve 6 or the sterile bag 9 is provided with a threaded joint, and the sieve sleeve 6 or the sterile bag 9 is provided with a corresponding threaded joint 7. The threaded connection mode can easily finish the assembly, disassembly and replacement of the complete set of sieve tube 6 or the aseptic bag 9 under water, can carry out sampling for many times, and the sieve tube 6 or the aseptic bag 9 which has collected the sample can be covered with a screw cap to prevent the sample from losing.

A plurality of screen screens 6 can be prepared, each screen 8 with different apertures is fixed inside each screen, so that organisms with different particle sizes in the EAM, such as macroalgae, small invertebrates, microalgae and the like, can be separated, and sediments with different particle sizes in the substrate can be collected and separated. The sterile bag 9 collects the total amount of each component in the EAM, brings the components back to shore for separation or concentration and other treatments, and mainly aims at collecting and analyzing bacteria and sediment samples in the EAM. The sampling device can select a proper collector to pertinently collect different components in the EAM according to research requirements, has the advantages of flexibility, strong pertinence, capability of quantitative collection and the like, and the collected samples can be used for community structure composition analysis, biomass measurement, living body culture and other researches.

When in use, the user needs to select the sea with better condition and dives in the coral reef area to operate. The collector and the collector can be assembled before the water is drained, and the sample frame 1, the collector and the collector are assembled by using the net bag. Diving the hydropneum to a sampling reef area, and selecting a proper reef surface to start sampling operation. Firstly, the sample frame 1 is placed on the surface of the reef to be sampled, the collector is held by hands, the extrusion air bag 4 is not loosened, and the extrusion state is kept. The EAM or the sediment on the surface of the coral reef is scraped (brushed) by the collecting head 2, the air bag 4 is released at the same time, and the scraped (brushed) EAM is sucked by the negative pressure formed by the release of the air bag 4. Repeating for many times until the EAM in the sample frame 1 is completely collected. The sample can be pumped into the collector by repeatedly squeezing the bladder 4 under the action of the anti-reflux water valve 3. The sieve 6 retains the sample with a specific particle size in the sieve 6 under the action of the sieve 8, while the sterile bag 9 is used to collect the complete amount of the biological sample including bacteria. And after the collection is finished, the threaded joint is rotated to take the sieve tube 6 or the sterile bag 9 out of the hose 5, and the screw cap is covered to finish the collection process.

The above detailed description is specific to possible embodiments of the present invention, and the embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the scope of the present invention should be included within the scope of the present invention.

Claims

1. A portable coral reef area reef body surface algae group collection device is characterized in that: comprises a sample frame, a collector and a collector; the sample frame is a tubular structure with two open ends, the collector comprises an air bag and a collecting head, the air bag is connected with the collecting head through a hard pipe, an anti-backflow water valve is arranged on the hard pipe, and the collector is connected with the hard pipe between the air bag and the anti-backflow water valve through a hose.

2. The portable collecting device for the superficial algae of the coral reef area reef body as claimed in claim 1, wherein: the sample frame adopts a circular PVC pipe.

3. The portable collecting device for the superficial algae of the coral reef area reef body as claimed in claim 2, wherein: the sample frame has a diameter of 50mm to 100mm and a height of 50 mm.

4. The portable collecting device for the superficial algae of the coral reef area reef body as claimed in claim 1, wherein: the air bag is an extrusion type air bag, negative pressure is generated by extruding the air bag to suck a sample, and the sample is pumped into the collector by extruding the air bag.

5. The portable collecting device for the superficial algae of the coral reef area reef body as claimed in claim 1, wherein: the collector comprises a screen sleeve and a sterile bag.

6. The portable collecting device for the superficial algae of the coral reef area reef body as claimed in claim 5, wherein: the sleeve sieve tube or the sterile bag is connected with the hose through threads.

7. The portable collecting device for the superficial algae of the coral reef area reef body as claimed in claim 6, wherein: the screen pipe cover is a plurality of, is provided with the screen cloth of different apertures respectively.

8. The portable collecting device for the superficial algae of the coral reef area reef body as claimed in claim 1, wherein: the collecting head is a replaceable scraping head or a replaceable brush head and is fixed on the end surface of the hard tube in a fast-assembling mode.