Abstrak : Rehabilitasi mangrove merupakan salah satu upaya yang dilakukan untuk mengurangi laju kerusakan hutan mangrove di Indonesia salah satunya di kawasan Teluk Gerupuk. Penelitian ini bertujuan untuk mengetahui kondisi mangrove hasil rehabilitasi di Teluk Gerupuk dengan mebandingkan struktur vegetasi mangrove di kawasan tersebut dengan ekosistem mangrove alami. Pelaksanaan penelitian dilakukan pada bulan April-Juni 2019 di dua kawasan hutan mangrove di pesisir selatan pulau Lombok yaitu hutan mangrove alami desa Pemongkong dan hutan mangrove rehabilitasi Teluk Gerupuk. Pengambilan data dilakukan dengan menggunakan metode transek berpetak dengan ukuran petak 10 x 10 m untuk tipe pohon, sub petak 5 x 5 m untuk tipe pancang, dan petak semai berukuran 2 x 2 m. Terdapat 11 spesies mangrove ditemukan di dalam plot penelitian dengan persebaran spesies yaitu 8 spaesies ditemukan di hutan mangrove alami Pemongkong dan hanya 7 spesies ditemukan di hutan mangrove rehabilitasi Gerupuk. Spesies mangrove yang dimaksud termasuk ke dalam 4 famili yaitu Avicenniaceae (Avicennia alba, A. marina, A. lanata), Rhizophoraceae (Ceriops decandra, C. tagal, Rhizophora apiculata, R. mucronata, R. stylosa), Rubiaceae (Scyphiphora hydrophyllaceae) dan Sonneratiaceae (Sonneratia alba, S. casiolaris). Struktur vegetasi kedua ekosistem sangat berbeda terlihat pada vegetasi penyusunnya. Hutan mangrove alami Pemongkong didominasi oleh jenis Sonneratia alba dan Avicennia alba yang memiliki Indeks nilai penting (INP) untuk tipe pohon dan pancang dengan nilai masing-masing 132,37 dan 141,52, sedangkan hutan mangrove rehabilitasi didapatkan INP tertinggi pada tipe pohon dan pancang yaitu jenis R. apiculata dan R. stylosa dengan INP berturut-turut 140,5 dan 116,41. Rehabilitasi hutan mangrove dengan metode yang selama ini dilakukan telah mengubah struktur vegetasi hutan mangrove di Pulau Lombok yang juga dapat mempengaruhi fauna asosiasi dan ekosistem sekitar mangrove. Oleh karena itu, diperlukan perencanaan serta analisis terlebih dahulu terhadap lokasi tujuan rehabilitasi mangrove agar untuk terbentuknya hutan mangrove rehabilitasi yang lebih sesuai dengan biota asosiasi dan ekosistem sekitar yang telah ada sebelumnya.Kata Kunci : Struktur Komunitas, Mangrove, Alami, RehabilitasiAbstract : Rehabilitation of mangrove vegetation was an effort in order to decrease the rate of mangrove ecosystem destruction. This research aimed to determine the vegetation structure and the community status of natural and rehabilitation mangrove forest at South Lombok seashore. This research held on March – June 2019 at two types of mangrove ecosystem such as natural ecosystem at pemongkong, East Lombok and rehabilitation ecosystem at Gerupuk bay, Central Lombok. Data collection used plotted transect method by placed a plot sized 10x 10 m alternately. There are 11 species of mangrove found which belong to 4 families such as Avicenniaceae (Avicennia alba, A. marina, A. lanata), Rhizophoraceae (Ceriops decandra, C. tagal, Rhizophora apiculata, R. mucronata, R. stylosa), Rubiaceae (Scyphiphora hydrophyllaceae) and Sonneratia (Sonneratia alba, S. casiolaris). Vegetation structure in these 2 location was different based on the composition each vegetation and it proportion. Natural mangrove forest in pemongkong dominated by Sonneratia alba with importance value reached 132,37, meanwhile the rehabilitation area of mangrove ecosystem Gerupuk dominated by Rhizophora apiculata with number of importance value reached 140,5. These differences drove the value of persent of similarity (PS) between these ecosystem only reached 10.41% which categorized as low similarity. Mostly of rehabilitation of mangrove ecosystem conducted cause the alteration of vegetation structure of mangrove in Lombok coastal and affect the mangrove associated fauna and ecosystems. In that case, it really important to analys the condition of mangrove rehabilitation plan location to determine the mangrove species to plant in order to formed a rehabilitiation of mangrove area which more compatible to its associated biota and ecosystems.Keyword : Structure, Mangrove, Natural, Rehabilitation
Pulau Lombok memiliki kawasan hutan mangrove seluas 3.305 ha, 1.643 ha (49,7%) masih dalam kondisi baik dan sisanya 1.662 ha (50,3 %) dalam kondisi rusak. Mangrove sebagai habitat tempat hidup, berlindung, memijah dan penyuplai makanan dapat menunjang kehidupan moluska. Penelitian dilakukan pada bulan April s/d Mei 2018 di wilayah pesisir dan pulau sangat kecil (Gili) di Pulau Lombok dan bertujuan untuk mengetahui keanekaragaman moluska pada ekosistem mangrove di Pulau Lombok. Pengambilan sampel menggunakan metode purposive sampling (pengambilan sampel yang bertujuan). Jumlah induvidu moluska yang didapatkan yaitu 1159 individu yang terdiri atas 42 spesies dari kelas gastropoda dan 5 spesies dari kelas bivalvia. Nilai kelimpahan, indeks keanekaragaman,indeks keseragaman dan dominasi tertinggi berturut-turut yaitu 74 (ind/m3), 2,4308, 0,8409, 0,4439.
Abstrak: Struktur komunitas moluska di suatu ekosistem mangrove dapat digunakan sebagai indikator status kesehatan ekosistem tersebut. Dalam penelitian ini dilakukan pembandingan antara struktur komunitas moluska di ekosistem mangrove alami dan rehabilitasi untuk melihat adanya perbedaan struktur moluska di kedua kondisi ekosistem tersebut. Penelitian ini telah dilakukan pada bulan Maret - Juni 2019 pada 2 tipe ekosistem mangrove yaitu ekosistem mangrove alami di Pemongkong, Lombok Timur dan ekosistem mangrove rehabilitasi di teluk Gerupuk, Lombok Tengah. Pengambilan data dilakukan dengan metode purposive random sampling dengan meletakkan 3 plot berukuran 1x1 m secara acak di dalam plot yang berukuran lebih besar (10x10 m) yang telah ditentukan sebelumnya. Adapun hasil penelitian menunjukkan terdapat 37 spesies moluska yang termasuk ke dalam 14 famili. 14 spesies ditemukan di kedua lokasi penelitian, 3 spesies hanya ditemukan di kawasan rehabilitasi, dan 20 spesies lainnya hanya ditemukan di kawasan mangrove alami Pemongkong. Ekosistem mangrove alami Pemongkong memiliki kemelimpahan moluska lebih tinggi yakni mencapai 77.692 ind/m2, dibandingkan dengan ekosistem mangrove rehabilitasi yang hanya mencapai 48.746 ind/m2. Famili Potamididae memiliki keanekaragaman dan kemelimpahan tertinggi di kedua lokasi penelitian. Berdasarkan proporsi setiap spesies dalam komunitas moluska yang ditemukan, persamaan kedua lokasi penelitian yang ditunjukkan dengan Persent similaritas (PS) tergolong rendah yakni hanya mencapai kemiripan 36,36% .Keanekaragaman vegetasi mangrove, usia vegetasi, serta kondisi lingkungan dapat menjadi faktor yang mendukung perbedaan struktur komunitas moluska tersebut.Kata kunci: Struktur komunits, Moluska, Mangrove, Alami, RehabilitasiAbstract: Mollusks community structure in a mangrove swamp can be used to describe the status of mangrove ecosystem’s health. In this research, the mollusks community ini natural and rehabilitation mangrove ecosystem were compared in order to find the difference between these ecosystems. This research held on March to June 2019 at 2 types of mangrove ecosystem such as natural ecosystem at Pemongkong, East Lombok and rehabilitation ecosystem at Gerupuk bay. Data collection method used purposive random sampling by placed 3 plots sized 1x1 m randomly in a larger plot (10x10 m) which have been determine before. The result showed that there are 37 species of association of mollusks which belong to 14 families. 14 species found in both locations, 3 species only found at rehabilitation ecosystem, and 20 species left only found at natural mangrove ecosystem at Pemongkong. Natural mangrove ecosystem Pemongkong had higher abundance of association mollusks with number of abundance 77.692 ind/m2 against rehabilitation ecosystem which only reached 48.746 ind/m2. Potamididae has the highest diversity and abundance value in both location. The resemblance of these 2 ecosystem based on the proportion of each species in the mollusks community showed by Similarity Presentation categorized as low level which only reach 36,36% of similarity. Mangrove diversity, it’s age, and the environmental condition may caused the difference in those mollusks structure community.Key words: Structur community, Mollusks, Mangrove, Natural, Rehabilitation
The Mandalika Special Economic Zone (SEZ) was designated as a tourist area in 2015. The development of the Mandalika area directly impacts the sustainability, diversity of species, especially birds that make mangroves their habitat. The study aims to investigate the value of bird species diversity in mangrove habitats as bioindicators. Furthermore, the research has been carried out for three months, from March to May 2021. Research data collection uses the roaming method, and data analysis uses bird community structure analysis (Diversity Index). In this study, 33 species of birds were found. Furthermore, it was found that six species of birds are protected wildlife. In addition, 16 are migratory birds, and 27 are Least Concern (LC) bird species; four species have Near Threatened (NT) status. Meanwhile, the Index of bird community structure is H’ 2.7, uniformity E 0.8, and dominance C 0.9. The value of the bird community structure in the Mandalika SEZ shows the condition of mangrove habitat in the moderate damage category. Therefore, there needs to be an effort to preserve mangroves involving the community, government, and Indonesia Tourism Development Corporation (ITDC) area managers.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.