The near-surface distribution of young-of-the-year perch was observed with a towed upward beaming echosounder system (SIMRAD EK60 with a circular 7◦ transducer). Perch aggregated densely in the epilimnion during daytime and dispersed evenly below the surface at night. Shoaling commenced in late June when perchmetamorphosed from the larval to juvenile stage. Average shoal widthwas 6.6m and avera...

The peroxy radical chemical amplification (PERCA) method is combined with cavity ringdown spectroscopy(CRDS) to detect peroxy radicals (HO2 and RO2). In PERCA, HO2 and RO2 are first converted to NO2 via reactions with NO, and the OH and RO coproducts are recycled back to HO2 in subsequent reactions with CO and O2; the chain reactions of HO2 are repeated and amplify the level of NO2. The amplifi...

There has been no previous parasitological survey of perch Perca fluviatilis in Turkey. Consequently, the objectives of the present study were to investigate the metazoan parasite communities of perch and also to calculate infection parameters of the parasites in a eutrophic lake. A total of 52 perch were collected seasonally from Lake Sığırcı in Ipsala, Turkey, between April 2009 and February ...

The body condition, lipid reserves and mortality of 0 and 1 year-old perch Perca fluviatilis and ruffe Gymnocephalus cernuus, sampled during the winter in Lake Constance, Germany, were compared. Length-frequency analyses did not provide evidence for overwinter mortality in either species. The fresh and dry mass of perch as well as their lipid contents decreased during winter, while ruffe were h...

Pengabdian ini bertujuan untuk Meningkatkan Kreatifitas Pengolahan Kain Perca Dalam Bentuk Furniture (Pembuatan Keset Kaki) Ibu-ibu PKK Srikandi di Desa Siraman. Metode penyampaian materi pelatihan adalah metode demonstrasi dimana tutor menyampaikan sekaligus mempraktekannya secara langsung depan peserta pelatihan. Adapun yang disampaikan memperkenalkan keset kaki dari kain perca serta kegunaan...

Larval dispersal is a crucial factor for fish recruitment. For fishes with relatively small-bodied larvae, drift has the potential to play a more important role than active habitat selection in determining larval dispersal; therefore, we expect small-bodied fish larvae to be poorly associated with habitat characteristics. To test this hypothesis, we used as model yellow perch (Perca flavescens)...

We evaluated performance of species distribution models for predictive mapping, and how models can be used to integrate human pressures into ecological and economic assessments. A selection of 77 biological variables (species, groups of species, and measures of biodiversity) across the Baltic Sea were modeled. Differences among methods, areas, predictor, and response variables were evaluated. S...

Setiap rumah tangga pasti akan menghasilkan limbah atau barang yang sudah tidak dipakai. Fokus dari pengabdian yaitu memanfaatkan terpakai menjadi bisa digunakan. Seperti contohnya tutup botol dan kain perca. Tutup perca dapat dikreasi bross. Sebuah accessories pelengkap keindahan bagi pemakainaya biasanya digunakan wanita. Metode dipakai menggunakan strategi pelatihan. Pengabdian tentang peman...