Natur Cymru
A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z
O
oak, 3:38
octopus, 15:17
Odontomyia hydroleon, see soldierfly
Oes Efydd, 14:31; 22:19
Oes Haearn, 22:19; 24:28
Oes Iâ, 13:29, 14:31; 24:39
Offa's Dyke by Jim Saunders, 23:43
offshore windfarms, 5:12
Ogden, Peter, 31:15
Ogwen, Afon/River, 1:37
oil, peak, 35:5ff
ôl-adain gopor, Amphipyra pyramidea, 21:18
olew, 18:15
Oliver, Graham, 1:18; 24:8; 34:40
ôl-troed ecolegol, 20:16
On This Mountain. Essays, 28:43
Oostvaardeplassen, 2:9
opencast mining, 32:8ff
O'r Llain i'r Llestr, 23:13
Orange, Alan, 31:42
orchards, 12:37
orchids, 4:28
bog, 28:46
common spotted, 33:23
early purple, 37:18
green-winged, 26:15; 33:23
Orchids of Britain & Ireland by Anne & Simon
Harrap, 17:43
Orchids of the British Isles by Michael Foley &
Sidney Clarke, 17:43
ordoficaidd, 24:28
O'Reilly, Pat, 22:41; 31:22
Oritoniscus flavus, 25:11
Ormerod, Steve, 9:4
Orthoptera, 16:16
Osmia parientina, see bee, mason,
Osmia xanthomelana, gweler gwenynen y glannau/
see bee, mason,
Osmunda regalis, 5:15-17(c)
osprey, 12:4; 34:36
otter, 1:45; 4:45; 6:43; 7:7; 9:34; 10:47;
12:45; 23:46; 27:4ff, 46; 29:16; 31:46; 35:44;
37:42; 40:39
Otto, Ziggy, (Seigbert), 4:38;
18:47; 19:27; 21:34; 22:8; 23:4;
36:28; 37:22;
40:12
overfishing, see fishing, over-
overgrazing, see grazing, over-
Owain Glyndŵr, 33:18(c)
Owen, Athro Hywel Wyn, 10:34(c)
Owen, Hugh, 7:12(c); 12:14(c)
Owen, Kath, 24:46
owl
barn, 4:16; 5:36; 8:13; 14:40; 24:5ff
little, 5:36; 38:41
long-eared, 38:41
short-eared, 38:41
tawny, 38:41
Oxwich, 18:25
oysterplant, 20:18
ozone, 13:36