Vegetasi Mangrove Dipengaruhi Oleh Frekuensi Perendaman Air Laut Melalui Peristiwa Pasang Surut. Penelitian Ini Bertujuan Untuk Mengetahui Pengaruh Frekuensi Perendaman Air Laut Terhadap Pertumbuhan Bibit Mangrove Jenis Rhizophora Mucronata Dengan Jarak Peletakan Bibit 0 Cm, 50 Cm, 100 Cm, 150 Cm Dan 200 Cm Dari Permukaan Tanah Atau Lumpur Di Pembibitan Fakultas Perikanan Dan Ilmu Kelautan Universitas Borneo Tarakan.
Penelitian Ini Dilaksanakan Pada Bulan Februari Sampai Juli 2014. Dari Hasil Penelitian Diketahui Frekuensi Perendaman Bibit Mangrove Yang Berbeda Secara Deskriptif Memberikan Pengaruh Terhadap Pertumbuhan Bibit Mangrove Jenis Rhizophora Mucronata.Pada Perlakuan A Mengalami Perendaman Sebanyak 30 Kali Dalam Sebulan Didapatkan Total Pertumbuhan Rata-Rata 12.58 Cm.Pada Perlakuan B Mengalami Perendaman Sebanyak 30 Kali Dalam Sebulan Didapatkan Total Pertumbuhan Rata-Rata 12.34 Cm.Pada Perlakuan C Mengalami Perendaman Sebanyak 20 Kali Dalam Sebulan Didapatkan Total Pertumbuhan Rata-Rata 12.11 Cm.Pada Perlakuan D Mengalami Perendaman Sebanyak 9 Kali Dalam Sebulan Didapatkan Total Pertumbuhan Rata-Rata 16.88 Cm.Pada Perlakuan E Mengalami Perendaman Sebanyak 3 Kali Dalam Sebulan Didapatkan Total Pertumbuhan Rata-Rata 15.22 Cm.
Kata Kunci: Frekuensi Perendaman, Pasang Surut, Pertumbuhan, Dan Bibit Mangrove

Mangrove Vegetation Influenced By Frequency Of Watering Sea Water Trough By Sea Tides. The Research Aims To Know Watering Influence Of Sea Water Frequency To Mangrove Seeds Growth Rhizophora Mucronata With Different Distances Place From Territorial Water Base (0 Cm, 50 Cm, 100 Cm, 150 Cm And 200 Cm) At Mangrove Breeding, Fisheries And Marine Science Faculty, Borneo Tarakan University. The Research Was Conducted From February Until July 2014. From This Research Knew That Different Watering Of Sea Water Frequency Due To Growth Of Mangrove Seed Rhizophora Mucronata. Treatment Of A, With 30 Times Watering In A Month Due To Mangrove Seeds Growth Until 12,58 Cm. Treatment Of B, With 30 Times Watering In A Month Due To Mangrove Seeds Growth Until 12,34 Cm. Treatment Of C, With 20 Times Watering In A Month Due To Mangrove Seeds Growth Until 12,11 Cm. Treatment Of D, With 9 Times Watering In A Month Due To Mangrove Seeds Growth Until 16,88 Cm. And Treatment Of E, With 3 Times Watering In A Month Due To Mangrove Seeds Growth Until 15,22 Cm. Keywords: Watering Frequency, Sea Tides, Growth, And Mangrove Seeds