Pengelolaan Perikanan Di Danau Limboto Pasca Pengerukan

Abstract

Danau Limboto di Propinsi Gorontalo termasuk danau kritis yang disebabkan karena sedimentasi/pendangkalan, eutrofikasi dan gulma air eceng gondok. Pada 2013 di Danau Limboto telah dilakukan program pengerukan dan tanah hasil pengerukan dijadikan tanggul penahan air mengelilingi danau. Tulisan ini bertujuan untuk mendapatkan pola pengelolaan perairan Danau Limboto pasca pengerukan. Penelitian perikanan di Danau Limboto telah dilakukan sebelum pengerukan sejak tahun 2006 – 2010 dan sesudah pengerukan pada periode 2014 – 2016. Pelaksanan pengerukan dan pembuatan tanggul di Danau Limboto menyebabkan terjadi perubahan ekologis yang penting yaitu; pendalaman air, tanggul penahan air, habitat lumpur yang terangkat ke atas dan tertutupnya wilayah ruaya ikan yang bermigrasi.Limboto Lake in Gorontalo Province belongs a critical lake caused by sedimentation, eutrophication and water hyacinth ). The dredging program had been initiated at Limboto lake since 2013 and dredged soil has been used as water-retaining embankments around the lake. This paper aim was to derive the management pattern of Limboto lake waters after dredging. Fisheries research was conducted at Limboto lake during before dredging during 2006 - 2010 and after dredging program. During 2014 – 2016. Implementation of dredging and embankment construction in Limboto Lake , hence has caused an important ecological changes that is; Water depths, water retention embankment, uplifted mud habitat and the closure of migratory fish beeding areas.

Comparison of growth pattern, condition factor, gonadosomatic index of Manggabai (Glosogobius giuris) and Payangka (Ophieleotris aporos) in Limboto Lake, Gorontalo, Indonesia

“…Additionally, the population of both native fishes, particularly O. aporos, has been declining due to excessive fishing and a worsening water quality in the lake (Krismono et al 2018;Paramata 2014). The fish sizes illustrated the variation based on the total length as presented in Figure 3, which showed that G. giuris is dominated by a length of 12-13 cm by 43%.…”

“…These various things have an impact on environmental factors in the demersal zone of the lake as the habitat of O. aporos and G. giuris. For example, the dissolved oxygen content especially at the bottom of the lake is low, the high suspended solids, the air temperature increases, the feed is limited (Hermanto et al 2013;Krismono et al 2018;Lihawa and Mahmud 2017;Paramata 2014). According to the report of Froese (2006); Muchlisin et al (2010); Das and Bordoloi (2014), many factors that affect the magnitude of the value of b include food availability, aspects of water quality, fish behavior, the maturity of gonads, habitat, and sex.…”

“…It showed that the exploitation of these two types of fish is very high in the lake. The fishing gear used by fishermen in Limboto Lake varies including gillnet, casting net, fishing rods, sero, trawl, ring nets, dayahu, motorcycle tires, and bunggo (Krismono et al 2018;Makmur et al 2019). According to (Paramata 2014) some of these fishing gears are not selective towards the target so that they have an impact on overfishing.…”

Strategies on Degraded Lake Management for Sustainable Environmental Ecosystem in Lake Limboto, Gorontalo

“…Based on field observations, the fish market for lake fisheries is spread in many places, making it easier for people to access to buy. Even lake fisheries are the primary source of freshwater fisheries in Gorontalo Province, which has an immense potential of 262.7-589.9 kg/ha/year [13], consisting of 18 species of fish [14]. However, the development of the upstream fisheries sector in Lake Limboto must consider its carrying capacity such that it will not cause more damage to the ecosystem.…”

Spasial Luas Tanam Padi Sawah Irigasi Berdasarkan Citra Satelit Optis

“…Kabupaten Gorontalo merupakan salah satu wilayah dalam Provinsi Gorontalo yang memiliki jumlah penduduk paling banyak yaitu 393.107 jiwa dengan luas 2.125,47 km 2 dan terbagi atas 19 Kecamatan (BPS, 2021) . Di Kabupaten ini terdapat Danau Limboto yang merupakan salah satu danau kritis di Indonesia akibat sedimentasi dan eutrofikasi (Krismono et al, 2018). Indikasi lahan sawah yang sedang dalam fase penggenangan di Kabupaten Gorontalo sebagaimana dalam Gambar 5 dimana pantulannya secara visual berwarna biru.…”