SEAGRASS RESTORATION: AN UPDATE FROM TRANG PROVINCE, SOUTHWESTERN THAILAND

2017 ◽  
Author(s):  
Prasert Tongnunui ◽  
Prasert Tongnunui ◽  
Woraporn Tarangkoon ◽  
Woraporn Tarangkoon ◽  
Parichat Hukiew ◽  
...  
Keyword(s):  
Survival Rate ◽  
Habitat Restoration ◽  
Natural Habitat ◽  
Donor Site ◽  
Limiting Factor ◽  
Seagrass Bed ◽  
Asexual Propagation ◽  
Enhalus Acoroides ◽  
Large Numbers ◽  
Sexual Propagation

Natural disasters may adversely affect coastal resources potentially leading to coastal habitat restorations that incorporate stakeholders and the general public. Appropriate methodologies for habitat restoration are developed to ensure the outcomes of this project. Currently, seagrass bed restoration by means of asexual and sexual propagation techniques have been used worldwide. However, the experience of seagrass (Enhalus acoroides) habitat restoration in Trang Province noted that to accomplish this project’s strategies involved the application of restoration techniques along with public and stakeholder participation. The application of asexual propagation, specifically the collection of single shoots from donor seagrasses and subsequent transplantation, is a convenient tool. However, from this project results, this process still has conceptual problems as from the large numbers of single shoots collected from donor seagrasses, the survival rate was relatively low. Furthermore, this process was complicated by conflicting interests between local communities near to the donor site and the project’s organizers. In order to reduce said conflicts, other techniques to balance stakeholder interests were instigated by this project, namely the development of both asexual and sexual propagation techniques. This project initiated a sexual propagation technique by the collection of wild seeds of Enhalus acoroides that were subsequently grown in the laboratory before natural habitat transplantation. This project results showed that seeds can be grown rapidly and can be cultured in large numbers. However, this development technique has a limit on rearing time because seedlings were found to be in decline after the third month of the experiment. These problems were compounded by a limiting factor that pushed the project’s organizers to decide to transplant seagrasses from the laboratory to the wild whether a time was seasonally suitable or unsuitable, the planting activity still done forward. This matter may have enhanced the low survival rate situation after seagrass transplantation to the wild. If there is a need to recover a seagrass bed, the above culture and transplantation methodologies should be used in conjunction with repeated periodic plantings until natural ecological function has been restored. In conclusion, further research should be instigated to improve the cultivation method for producing ready to plant seedlings and to improve methods of project operation.

SEAGRASS RESTORATION: AN UPDATE FROM TRANG PROVINCE, SOUTHWESTERN THAILAND

2017 ◽  
Author(s):  
Prasert Tongnunui ◽  
Prasert Tongnunui ◽  
Woraporn Tarangkoon ◽  
Woraporn Tarangkoon ◽  
Parichat Hukiew ◽  
...  
Keyword(s):  
Survival Rate ◽  
Habitat Restoration ◽  
Natural Habitat ◽  
Donor Site ◽  
Limiting Factor ◽  
Seagrass Bed ◽  
Asexual Propagation ◽  
Enhalus Acoroides ◽  
Large Numbers ◽  
Sexual Propagation

Natural disasters may adversely affect coastal resources potentially leading to coastal habitat restorations that incorporate stakeholders and the general public. Appropriate methodologies for habitat restoration are developed to ensure the outcomes of this project. Currently, seagrass bed restoration by means of asexual and sexual propagation techniques have been used worldwide. However, the experience of seagrass (Enhalus acoroides) habitat restoration in Trang Province noted that to accomplish this project’s strategies involved the application of restoration techniques along with public and stakeholder participation. The application of asexual propagation, specifically the collection of single shoots from donor seagrasses and subsequent transplantation, is a convenient tool. However, from this project results, this process still has conceptual problems as from the large numbers of single shoots collected from donor seagrasses, the survival rate was relatively low. Furthermore, this process was complicated by conflicting interests between local communities near to the donor site and the project’s organizers. In order to reduce said conflicts, other techniques to balance stakeholder interests were instigated by this project, namely the development of both asexual and sexual propagation techniques. This project initiated a sexual propagation technique by the collection of wild seeds of Enhalus acoroides that were subsequently grown in the laboratory before natural habitat transplantation. This project results showed that seeds can be grown rapidly and can be cultured in large numbers. However, this development technique has a limit on rearing time because seedlings were found to be in decline after the third month of the experiment. These problems were compounded by a limiting factor that pushed the project’s organizers to decide to transplant seagrasses from the laboratory to the wild whether a time was seasonally suitable or unsuitable, the planting activity still done forward. This matter may have enhanced the low survival rate situation after seagrass transplantation to the wild. If there is a need to recover a seagrass bed, the above culture and transplantation methodologies should be used in conjunction with repeated periodic plantings until natural ecological function has been restored. In conclusion, further research should be instigated to improve the cultivation method for producing ready to plant seedlings and to improve methods of project operation.

PREFERENSI PENEMPELAN, PERTUMBUHAN, DAN SINTASAN LARVA TERIPANG PASIR, Holothuria scabra PADA SUBSTRAT LAMUN YANG BERBEDA

2017 ◽  
Vol 11 (3) ◽  
pp. 249
Author(s):  
Lisa Fajar Indriana ◽  
Yuli Afrianti ◽  
Sitti Hilyana ◽  
Muhammad Firdaus Firdaus
Keyword(s):  
Survival Rate ◽  
Economic Value ◽  
Growth And Survival ◽  
Holothuria Scabra ◽  
Enhalus Acoroides ◽  
Randomized Design ◽  
Settlement Substrate ◽  
Cymodocea Rotundata ◽  
Syringodium Isoetifolium ◽  
Cymodocea Serrulata

Teripang pasir, Holothuria scabra merupakan komoditas hasil laut yang bernilai ekonomis tinggi. Penangkapan berlebihan stok di alam mendorong berkembangnya kegiatan budidaya. Penempelan merupakan fase kritis pada larva teripang karena terjadi peralihan sifat planktonis ke bentik yang memerlukan substrat. Penelitian ini bertujuan untuk mengetahui preferensi penempelan, pertumbuhan, dan sintasan larva H. scabra fase penempelan pada substrat lamun yang berbeda. Penelitian menggunakan metode rancangan acak lengkap dengan perlakuan empat jenis daun lamun berbeda dan lima ulangan. Perlakuan terdiri atas Enhalus acoroides (L-1), Syringodium isoetifolium (L-2), Cymodocea serrulata (L-3), dan Cymodocea rotundata (L-4). Jumlah awal larva sebanyak 1.000 individu dan substrat dirangkai dengan luasan yang sama sebesar 12 cm x 17 cm untuk setiap unit penelitian. Hasil penelitian menunjukkan jenis lamun yang digunakan sebagai substrat berpengaruh secara nyata terhadap preferensi penempelan dan sintasan larva teripang pasir, namun tidak berpengaruh terhadap pertumbuhan. E. acoroides menunjukkan hasil terbaik dengan preferensi penempelan 0,26 ind. cm-2 dan sintasan 10,66%; sehingga layak digunakan sebagai substrat penempelan dalam pembenihan teripang pasir, H. scabra.Holothuria scabra larvae on different seagrass substrates. By: Lisa Fajar Indriana, Yuli Afrianti, Sitti Hilyana, and Muhammad FirdausSandfish Holothuria scabra is marine commodities with a high economic value. Overfishing of natural stocks has compelled an interest to begin aquaculture practice. Settlement is a critical phase for the planktonic larvae as they will transform to benthic form in the presence of substrate. This study aims to evaluate the settlement preferences, growth, and survival rate of H. scabra larvae settled on different seagrass leaves. The research was conducted using the Completely randomized design with four different species of seagrass leaves and five replications. The treatments consist of Enhalus acoroides (L-1), Syringodium isoetifolium (L-2), Cymodocea serrulata (L-3), and Cymodocea rotundata (L-4). Initial number of larvae was 1,000 individuals and the substrate was set with same widthof 12 cm x 17 cm for each unit. Results of the experiment indicated that settlement preference and survival rate of H. scabra larvae was significantly affected by seagrass used as substrate while no significantly differences was observed for growth of larvae. E. acoroides showed the best result with 0.26 ind. cm-2 settelement preference and 10.66% survival rate, so that suitable to be used as settlement substrate in H. scabra hatchery.

scholarly journals Suprafascial Free Flaps: Classification and Comprehensive Review of the Literature

2021 ◽  
Vol 6 ◽  
pp. 247275122110205
Author(s):  
Sebastian Rios ◽  
María Isabel Falguera-Uceda ◽  
Alicia Dean ◽  
Susana Heredero
Keyword(s):  
Survival Rate ◽  
Preoperative Planning ◽  
Donor Site ◽  
Free Flaps ◽  
Donor Site Morbidity ◽  
Anterolateral Thigh Flap ◽  
Cochrane Library ◽  
Review Of The Literature ◽  
Comprehensive Review ◽  
Search Terms

Study Design: Suprafascial free flaps have become common place in reconstructive surgery units. Nomenclature related to these flaps has not been uniform throughout the scientific literature, especially in regard to planes of dissection. This study is designed as a comprehensive review of the literature. Objectives: Our study highlights which flaps are used most frequently, their main indications, their survival rate, and how they have evolved in the last few decades as innovations have been introduced. Methods: A review of the literature was performed using keywords and Medical Subject Headings search terms. PubMed, Embase, and Cochrane Library were searched using the appropriate search terms. Data collected from each study included flap type, dissection plane, preoperative planning, area of reconstruction, as well as complications, donor-site morbidity and survival rate. Results: Seven hundred and fifty-five studies were found based on the search criteria. After full-text screening for inclusion and exclusion criteria 34 studies were included. A total of 1332 patients were comprised in these studies. The most common types of flaps used were superficial circumflex iliac perforator flap (SCIP), anterolateral thigh flap (ALT), and radial forearm flap. The most common areas of reconstruction were head & neck and limbs. There was no significant difference in survival rates between flaps that were raised in different planes of dissection. Conclusions: Based on the author’s review of the literature, suprafascial flaps are reliable, they have low donor site morbidity, and there is a wide selection available for harvest. The use of new technologies for preoperative planning, such as CT-Angiography and UHF ultrasound, have contributed to have more predictable results. We propose a standardized classification for these flaps, in order to create a uniform nomenclature for future reference.

scholarly journals Propagation of Annonaceous plants

2019 ◽  
Vol 41 (1) ◽  
Author(s):  
Gisela Ferreira ◽  
Iván De-La-Cruz-Chacón ◽  
Carmen Silvia Fernandes Boaro ◽  
Daniel Baron ◽  
Eurico Eduardo Pinto de Lemos
Keyword(s):  
Management Strategies ◽  
Economic Importance ◽  
Tissue Formation ◽  
Compatibility Studies ◽  
Asexual Propagation ◽  
Expression Of Genes ◽  
Custard Apple ◽  
Sexual Propagation ◽  
Exogenous Factors ◽  
The Subject

Abstract This review aims to present advances in studies on the propagation of the Annonaceae species, which includes species of economic importance such as: soursop, custard apple, atemoya and cherimoya. In sexual propagation, advances are mainly related to a better understanding of the stages of seed development, dormancy mechanisms, and germination. In asexual propagation, compatibility studies between grafts and rootstocks are presented, focusing on the expression of genes involved in tissue formation. The cutting method is also discussed, which is another option for the propagation for this group of plants considered difficult to root, approaching endogenous and exogenous factors related to the subject, as well as management strategies that affect the success of this technique.

Secondary Succession and Natural Habitat Restoration in Abandoned Rice Fields of Central Korea

2002 ◽  
Vol 10 (2) ◽  
pp. 306-314 ◽  
Author(s):  
Chang-Seok Lee ◽  
Young-Han You ◽  
George R. Robinson
Keyword(s):  
Secondary Succession ◽  
Habitat Restoration ◽  
Natural Habitat ◽  
Rice Fields

Willow colonization of Rocky Mountain mires

1995 ◽  
Vol 25 (2) ◽  
pp. 215-222 ◽  
Author(s):  
Tom R. Cottrell
Keyword(s):  
Root Biomass ◽  
Peat Soil ◽  
Rocky Mountain ◽  
Dry Weight ◽  
Shoot Biomass ◽  
Stem Cuttings ◽  
Peat Soils ◽  
Asexual Propagation ◽  
Extensive Field ◽  
Sexual Propagation

Salixplanifolia Pursh ssp. planifolia and Salixmonticola Bebb are the dominant willow species of Colorado Rocky Mountain willow carrs. Extensive field observations suggest that neither of these species is capable of sexual propagation under continuous sedge cover on peat soils. Growth experiments using willow stem cuttings in pots of saturated peat soil indicate that S. planifolia produces more root biomass (p = 0.0031) and shoot biomass (p = 0.0001) than S. monticola during one summer of growth. Male 5. planifolia and female S. monticola produce more dry-weight root (p = 0.0390) and shoot (p = 0.0442) biomass than their conspecific opposite sex. A species by sex by elevation interaction is significant for root biomass (p = 0.0360). The results are suggestive that these taxa have different regeneration niches. Asexual propagation driven by beaver activity is suggested as an explanation for the dominance of s. planifolia in mires and how this species colonizes vegetated peat soils. Beaver cut and store willow stems for a winter food source. This activity provides willow fragments for asexual colonization of mires.

Effects of simulated herbivory on growth and reproduction of two beach annuals, Cakile edentula and Corispermum hyssopifolium

1992 ◽  
Vol 70 (12) ◽  
pp. 2467-2475 ◽  
Author(s):  
Kevin E. Gedge ◽  
M. A. Maun
Keyword(s):  
Reproductive Output ◽  
Natural Habitat ◽  
Critical Time ◽  
Insect Herbivores ◽  
Compensatory Response ◽  
Large Numbers ◽  
Cakile Edentula ◽  
Specialist Insect ◽  
Heavy Damage ◽  
Growth And Reproduction

Cakile edentula var. lucustris (sea rocket) and Corispermum hyssopifolium (bugseed) are two annual flowering plants that grow on the sandy shores of the Great Lakes. This habitat is extremely unpredictable and plants are subject to grazing by a number of insect herbivores as well as browsing by white-tailed deer. The objectives of these studies were to estimate the extent of herbivore damage under natural conditions, to determine the most vulnerable stage of damage, and to examine the compensatory ability of each species to tolerate herbivory. Greenhouse experiments showed that both species were able to compensate for low to moderate levels of artificial defoliation. However, high levels near the time of anthesis reduced the growth and reproductive output of both species. Similar experiments in the field revealed that although the critical time of damage was still the same, the plants were less able to tolerate herbivory. Cakile edentula plants exposed to natural herbivory in an unsprayed cabbage field were quickly attacked by large numbers of specialist insect herbivores and completely defoliated in 11 days. The fact that such damage does not occur in its natural habitat suggests that Cakile edentula escapes heavy damage because insects are unable to locate these populations along the shoreline. Key words: white-tailed deer, defoliation intensity, defoliation stage, compensatory response, indeterminate growth.

scholarly journals Protection alone may not promote natural recovery of biogenic habitats of high biodiversity damaged by mobile fishing gears

2018 ◽  
Author(s):  
Jose M. Fariñas-Franco ◽  
A. Louise Allcock ◽  
Dai Roberts
Keyword(s):  
Habitat Restoration ◽  
Anthropogenic Impacts ◽  
Natural Habitat ◽  
Management Strategies ◽  
Keystone Species ◽  
Marine Bivalve ◽  
Natural Recovery ◽  
Protection Measures ◽  
Fishing Gears ◽  
Horse Mussel

The horse mussel Modiolus modiolus (L.) is a large marine bivalve that aggregates to create complex habitats of high biodiversity. As a keystone species, M. modiolus is of great importance for the functioning of marine benthic ecosystems, forming biogenic habitats used to designate Marine Protected Areas (MPAs). The present study investigates the condition of M. modiolus beds historically subjected to intense scallop fishing using mobile fishing gears. The study, conducted seven years after the introduction of legislation banning all forms of fishing, aimed to establish whether natural habitat recovery occurs after protection measures are put in place. Lower biodiversity and up to 80% decline in densities of M. modiolus were recorded across the current dis- tributional range of the species in Strangford Lough, Northern Ireland. The decline in biodiversity in most areas surveyed was consistent with that observed in biogenic reefs impacted by mobile fishing gears elsewhere. Epifauna, including sponges, hydroids and tunicates, experienced the most substantial decline in biodiversity, with up to 64% fewer taxa recorded in 2010 compared with 2003. Higher variability in community composition and a shift towards faunal assemblages dominated by opportunistic infaunal species typical of softer substrata were also detected. Based on these observations we suggest that, for biogenic habitats, the designation of MPAs and the introduction of fishing bans alone may not be sufficient to reverse or halt the negative effects caused by past anthropogenic impacts. Direct intervention, including habitat restoration based on translocation of native keystone species, should be considered as part of management strategies for MPAs which host similar biogenic reef habitats where condition and natural recovery have been compromised.

scholarly journals ECHINODERMATA, Holothuria atra, IN AN INTERTIDAL SEAGRASS BED OFF THE BAMA BEACH, BALURAN NATIONAL PARK, EAST JAVA, INDONESIA

2014 ◽  
Vol 6 (1) ◽  
Author(s):  
Ana Setyastuti
Keyword(s):  
National Park ◽  
Sea Cucumber ◽  
Seagrass Bed ◽  
Enhalus Acoroides ◽  
Association Preference ◽  
Wet Weight ◽  
Belt Transect ◽  
Cymodocea Rotundata ◽  
Intertidal Seagrass ◽  
Holothuria Atra

<p>The occurrence of sea cucumber, <em>Holothuria atra,</em> was assessed in the seagrass area of the Bama beach, Baluran National Park in East Java. The study investigated the frequency and early stages of seagrass association preference of <em>H. atra</em>. Survey was conducted in May 2011 using belt transect (1m x 100m with three replicates). Frequency of <em>H. atra</em> and their association with seagrass were recorded. Furthermore, length and wet weight of each individual of <em>H. atra</em> were measured. The total of 146 individuals of <em>H. atra </em>were observed in which 37.67% associated with <em>Enhalus acoroides </em>(EA), 23.29% associated with <em>Cymodocea rotundata </em>(CR), 23,29% associated with mixed seagrass species of <em>E. acoroides</em> and <em>C. rotundata, </em>and 15.75% associated with no seagrass habitats. The results suggested that small size <em>H. atra</em> might prefer to live under the taller seagrass stands such <em>E. acoroides</em>, which could be morphologically benefits the <em>H. atra</em> by providing better protection and shelter area.</p> <p>Keywords: <em>Holothuria atra</em>, <em>Enhalus acoroides</em>, <em>Cymodocea rotundata</em>, Baluran National Park</p>

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