451 | Salvelinus alpinus |
452 | Potamogeton perfoliatus |
453 | Stachys arvensis |
454 | Pilularia |
455 | Macroinvertebrates |
456 | Rhithrogena haarupi |
457 | Carex canescens |
458 | Trapa natans |
459 | Newby Beck Control Sub-Catchment (Sleagill Beck) Discharge and Water Quality |
460 | Isolepis setacea |
461 | Eden DTC Invertebrate Data |
462 | Impatiens parviflora |
463 | Bank-side monitoring of river hydrology and water quality, Sem at Cool's Cottage, Hampshire Avon catchment |
464 | Tofieldia pusilla |
465 | Carex pallescens |
466 | Dinoflegellata |
467 | Drosera |
468 | Leptophlebia vespertina |
469 | Ephemerellidae |
470 | Potamogeton obtusifolius |
471 | Neoergasilus japonicus |
472 | Esthwaite Water Seismic Survey 1983 |
473 | Aira caryophyllea |
474 | Laboratory analysis of water samples, Ebble upstream, Hampshire Avon catchment |
475 | Lythrum portula |