📍 U5: Lemsford Village

River: Lea Catchment: Upper Lea (Hertfordshire) Filter(s): 365

Your Site at a Glance

269
Species Detected
181
Genera Identified
85
Families Found
858,919
DNA Sequences

How Your Site Compares

Metric Your Site Lea Average Study Average
Species 269 251 206
Genera 181 174 151
Families 85 87 83
EPT Families 5 6 6

Rank 5 of 10 on Lea Rank 17 of 81 in study

🌊 Water Quality Indicators

Good

BMWP score: 72 (Good) — ASPT score: 5.1 (Good)

14 scoring macroinvertebrate families detected

Clean water with slight impacts; a healthy community of macroinvertebrate families is present.

🔍 Notable Findings

Conservation Species:

Invasive Species:

🦋 Top 10 Families at Your Site

1. Chironomidae (Non-biting Midges)
67 (24.9%)
2. Naididae (Aquatic Oligochaetes)
43 (16.0%)
3. Cyprinidae (Carp and Allies)
12 (4.5%)
4. Lumbricidae (Common Earthworms)
11 (4.1%)
5. Simuliidae (Black Flies)
7 (2.6%)
6. Enchytraeidae (Potworms)
6 (2.2%)
7. Psychodidae (Moth Flies)
5 (1.9%)
8. Chydoridae (Chydorid Water Fleas)
5 (1.9%)
9. Anatidae (Ducks, Geese, and Swans)
5 (1.9%)
10. Cyclopidae (Cyclopoid Copepods)
4 (1.5%)
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
17/33 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

14 fish species detected (4 families, 159 ESVs)
SpeciesFamilyESVs
Gobio gobio (Gudgeon) Cyprinidae 14
Phoxinus phoxinus (Minnow) Cyprinidae 13
Scardinius racovitzai Cyprinidae 10
Barbus barbus (Barbel) Cyprinidae 8
Cyprinus carpio (Common Carp) Cyprinidae 8
Squalius cephalus (Chub) Cyprinidae 7
Gasterosteus aculeatus (Three-spined Stickleback) Gasterosteidae 5
Rutilus frisii Cyprinidae 4
Cottus bairdii Cottidae 3
Gobio kovatschevi Cyprinidae 3
Rutilus rubilio Cyprinidae 3
Leuciscus leuciscus (Dace) Cyprinidae 3
Barbatula barbatula (Stone Loach) Nemacheilidae 3
Gobio muresius Cyprinidae 1

🪰 EPT Species (Mayflies, Stoneflies & Caddisflies)

6 EPT species detected (5 families, 14 ESVs — E:4 / P:0 / T:2)
SpeciesFamilyESVs
Ephemeroptera (Mayflies)
Serratella ignita (Blue Winged Olive) Ephemerellidae 5
Baetis rhodani (Large Dark Olive) Baetidae 2
Cloeon dipterum (Pond Olive) Baetidae 1
Caenis luctuosa (Angler's Curse) Caenidae 1
Trichoptera (Caddisflies)
Glyphotaelius pellucidus (Northern Caddisflies) Limnephilidae 4
Lype phaeopa (Tube-case Caddisflies) Psychomyiidae 1

🔗 Your Ecological Twin

Most similar site: U6 - Stanborough South
River: Lea (same river)
Similarity: 58% of species shared
Download Data

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

Project logos