📍 B8: Woodhall lower

River: Beane Catchment: Upper Lea (Hertfordshire) Filter(s): 318, 350, 329, 302, 334, 114

Your Site at a Glance

557
Species Detected
373
Genera Identified
173
Families Found
4,628,353
DNA Sequences

How Your Site Compares

Metric Your Site Beane Average Study Average
Species 557 268 206
Genera 373 193 151
Families 173 103 83
EPT Families 12 5 6

Rank 1 of 10 on Beane Rank 1 of 81 in study

🌊 Water Quality Indicators

Very Good

BMWP score: 181 (Very Good) — ASPT score: 6.0 (Excellent)

30 scoring macroinvertebrate families detected

Near-natural conditions with an unpolluted, diverse macroinvertebrate community.

🔍 Notable Findings

Conservation Species:

Invasive Species:

🦋 Top 10 Families at Your Site

1. Chironomidae (Non-biting Midges)
94 (16.9%)
2. Naididae (Aquatic Oligochaetes)
43 (7.7%)
3. Enchytraeidae (Potworms)
25 (4.5%)
4. Lumbricidae (Common Earthworms)
21 (3.8%)
5. Staphylinidae (Rove Beetles)
16 (2.9%)
6. Psychodidae (Moth Flies)
11 (2.0%)
7. Limoniidae (Limoniid Crane Flies)
10 (1.8%)
8. Anatidae (Ducks, Geese, and Swans)
10 (1.8%)
9. Carabidae (Ground Beetles)
10 (1.8%)
10. Tipulidae (Crane Flies)
9 (1.6%)
Taxonomic composition

🪲 Extended Riverfly Taxa

1 Flatworms 18Dragonflies and Damselflies
2 Freshwater Snails 19Water Boatmen
3 Limpets 20Other Water Bugs
4 Bivalves 21Water Beetles
5 Aquatic Worms 22Alderflies
6 Leeches 23Caseless Caddisflies - Green Sedge
7 Crayfish 24Caseless Caddisflies - Net Spinners
8 Water Hoglouse 25Caseless Caddisflies - Non-Gilled
9 Freshwater Shrimps 26Cased Caddisflies - Hood Case-Maker
10 Invasive Non-Native Shrimps 27Cased Caddisflies - Weighted Case-Maker
11 Mayflies - Angler's Curse 28Cased Caddisflies - Bush Tailed Caddisfly
12 Mayflies - Olives 29Cased Caddisflies - Other
13 Mayflies - Prong Gilled 30Craneflies
14 Mayflies - Flatbodied 31Blackflies
15 Mayflies - Green Drake 32Non-Biting Midges
16 Mayflies - Blue-Winged Olive 33Water Snipe Flies
17 Stoneflies
26/33 Extended Riverfly taxa detected

Note: The Extended Riverfly Monitoring Initiative calculates scores based on abundance categories, which cannot be determined from eDNA presence/absence data. This checklist shows which taxa groups were detected but does not constitute an official ARMI score.

🐟 Fish Species

11 fish species detected (8 families, 144 ESVs)
SpeciesFamilyESVs
Phoxinus phoxinus (Minnow) Cyprinidae 19
Barbatula barbatula (Stone Loach) Nemacheilidae 18
Cottus bairdii Cottidae 12
Salmo trutta (Brown Trout / Sea Trout) Salmonidae 12
Gasterosteus aculeatus (Three-spined Stickleback) Gasterosteidae 8
Squalius cephalus (Chub) Cyprinidae 5
Rutilus frisii Cyprinidae 3
Potamorrhaphis guianensis Belonidae 2
Carassius auratus (Goldfish) Cyprinidae 1
Squalius alburnoides Cyprinidae 1
Phoxinus colchicus Cyprinidae 1

🪰 EPT Species (Mayflies, Stoneflies & Caddisflies)

22 EPT species detected (12 families, 45 ESVs — E:8 / P:3 / T:11)
SpeciesFamilyESVs
Ephemeroptera (Mayflies)
Paraleptophlebia submarginata (Turkey Brown) Leptophlebiidae 4
Baetis rhodani (Large Dark Olive) Baetidae 3
Caenis horaria (Angler's Curse) Caenidae 3
Baetis scambus (Small Dark Olive) Baetidae 2
Cloeon dipterum (Pond Olive) Baetidae 2
Ephemera vulgata (Drake Mackerel) Ephemeridae 2
Serratella ignita (Blue Winged Olive) Ephemerellidae 1
Ephemera danica (The Mayfly) Ephemeridae 1
Plecoptera (Stoneflies)
Leuctra fusca (Late Needle Fly) Leuctridae 4
Leuctra digitata (Rolled-winged Stoneflies) Leuctridae 2
Nemurella pictetii (Pictet's Stonefly) Nemouridae 1
Trichoptera (Caddisflies)
Leptocerus tineiformis (Long-horned Caddisflies) Leptoceridae 5
Glyphotaelius pellucidus (Northern Caddisflies) Limnephilidae 3
Silo nigricornis (Humpless Case-maker Caddisflies) Goeridae 2
Limnephilus marmoratus (Northern Caddisflies) Limnephilidae 2
Goera pilosa (Humpless Case-maker Caddisflies) Goeridae 1
Hydroptila martini (Microcaddisflies) Hydroptilidae 1
Hydroptila sparsa (Microcaddisflies) Hydroptilidae 1
Drusus annulatus (Northern Caddisflies) Limnephilidae 1
Halesus radiatus (Northern Caddisflies) Limnephilidae 1
Limnephilus extricatus (Northern Caddisflies) Limnephilidae 1
Rhyacophila dorsalis (Free-living Caddisflies) Rhyacophilidae 1

🔗 Your Ecological Twin

Most similar site: B9 - Stapleford Church
River: Beane (same river)
Similarity: 44% of species shared
Download Data

557 Species detected at this site — CSV format, opens in Excel

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