📍 U1B: East Hyde

River: Lea Catchment: Upper Lea (Hertfordshire) Filter(s): 137

Your Site at a Glance

208
Species Detected
149
Genera Identified
77
Families Found
677,549
DNA Sequences

How Your Site Compares

Metric Your Site Lea Average Study Average
Species 208 251 206
Genera 149 174 151
Families 77 87 83
EPT Families 4 6 6

Rank 9 of 10 on Lea Rank 44 of 81 in study

🌊 Water Quality Indicators

Moderate

BMWP score: 61 (Moderate) — ASPT score: 5.5 (Good)

11 scoring macroinvertebrate families detected

Water quality is moderately impacted; some pollution-sensitive families are present but diversity is limited.

🔍 Notable Findings

Conservation Species:

Invasive Species:

🦋 Top 10 Families at Your Site

1. Chironomidae (Non-biting Midges)
57 (27.4%)
2. Naididae (Aquatic Oligochaetes)
28 (13.5%)
3. Cyprinidae (Carp and Allies)
9 (4.3%)
4. Lumbricidae (Common Earthworms)
7 (3.4%)
5. Anatidae (Ducks, Geese, and Swans)
6 (2.9%)
6. Simuliidae (Black Flies)
5 (2.4%)
7. Psychodidae (Moth Flies)
4 (1.9%)
8. Ectopsocidae (Ectopsocid Barklice)
4 (1.9%)
9. Muridae (Old World Mice and Rats)
3 (1.4%)
10. Cyclopidae (Cyclopoid Copepods)
3 (1.4%)
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
13/33 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

15 fish species detected (8 families, 159 ESVs)
SpeciesFamilyESVs
Phoxinus phoxinus (Minnow) Cyprinidae 14
Squalius cephalus (Chub) Cyprinidae 13
Gobio gobio (Gudgeon) Cyprinidae 11
Gasterosteus aculeatus (Three-spined Stickleback) Gasterosteidae 8
Scardinius racovitzai Cyprinidae 5
Barbus barbus (Barbel) Cyprinidae 5
Barbatula barbatula (Stone Loach) Nemacheilidae 3
Cottus bairdii Cottidae 2
Phoxinus colchicus Cyprinidae 2
Rutilus frisii Cyprinidae 2
Gobio kovatschevi Cyprinidae 2
Carassius auratus (Goldfish) Cyprinidae 1
Clarias gariepinus Clariidae 1
Trachurus lathami Carangidae 1
Salmo trutta (Brown Trout / Sea Trout) Salmonidae 1

🪰 EPT Species (Mayflies, Stoneflies & Caddisflies)

5 EPT species detected (4 families, 7 ESVs — E:3 / P:0 / T:2)
SpeciesFamilyESVs
Ephemeroptera (Mayflies)
Baetis rhodani (Large Dark Olive) Baetidae 2
Baetis vernus (Medium Olive) Baetidae 1
Serratella ignita (Blue Winged Olive) Ephemerellidae 1
Trichoptera (Caddisflies)
Phryganea grandis (Large Case-maker Caddisflies) Phryganeidae 2
Glyphotaelius pellucidus (Northern Caddisflies) Limnephilidae 1

🔗 Your Ecological Twin

Most similar site: U2 - Batford Springs
River: Lea (same river)
Similarity: 51% of species shared
Download Data

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

Project logos