📍 R1: River Green (Buntingford)

River: Rib Catchment: Upper Lea (Hertfordshire) Filter(s): 143

Your Site at a Glance

183
Species Detected
134
Genera Identified
73
Families Found
1,066,738
DNA Sequences

How Your Site Compares

Metric Your Site Rib Average Study Average
Species 183 160 206
Genera 134 123 151
Families 73 72 83
EPT Families 2 5 6

Rank 4 of 9 on Rib Rank 49 of 81 in study

🌊 Water Quality Indicators

Poor

BMWP score: 40 (Poor) — ASPT score: 4.4 (Moderate)

9 scoring macroinvertebrate families detected

Indicators suggest polluted or significantly impacted water quality at this site.

🔍 Notable Findings

Conservation Species:

Invasive Species:

🦋 Top 10 Families at Your Site

1. Chironomidae (Non-biting Midges)
43 (23.5%)
2. Naididae (Aquatic Oligochaetes)
11 (6.0%)
3. Lumbricidae (Common Earthworms)
8 (4.4%)
4. Syrphidae (Hoverflies)
7 (3.8%)
5. Simuliidae (Black Flies)
5 (2.7%)
6. Anthomyiidae (Root-maggot Flies)
4 (2.2%)
7. Ceratopogonidae (Biting Midges)
4 (2.2%)
8. Muscidae (House Flies)
4 (2.2%)
9. Psychodidae (Moth Flies)
4 (2.2%)
10. Cyprinidae (Carp and Allies)
4 (2.2%)
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 ✗
12/33 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

7 fish species detected (4 families, 18 ESVs)
SpeciesFamilyESVs
Gasterosteus aculeatus (Three-spined Stickleback) Gasterosteidae 4
Barbatula barbatula (Stone Loach) Nemacheilidae 3
Phoxinus phoxinus (Minnow) Cyprinidae 3
Leuciscus leuciscus (Dace) Cyprinidae 1
Gobio gobio (Gudgeon) Cyprinidae 1
Squalius cephalus (Chub) Cyprinidae 1
Barbatula quignardi Nemacheilidae 1

🪰 EPT Species (Mayflies, Stoneflies & Caddisflies)

4 EPT species detected (2 families, 10 ESVs — E:2 / P:0 / T:2)
SpeciesFamilyESVs
Ephemeroptera (Mayflies)
Baetis vernus (Medium Olive) Baetidae 3
Baetis rhodani (Large Dark Olive) Baetidae 2
Trichoptera (Caddisflies)
Micropterna lateralis (Northern Caddisflies) Limnephilidae 2
Glyphotaelius pellucidus (Northern Caddisflies) Limnephilidae 1

🔗 Your Ecological Twin

Most similar site: R3 - Aspenden Road Bridge (Buntingford)
River: Rib (same river)
Similarity: 41% of species shared
Download Data

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

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