📍 B3: Aston End (Aston Ford)

River: Beane Catchment: Upper Lea (Hertfordshire) Filter(s): 121

Your Site at a Glance

274
Species Detected
203
Genera Identified
104
Families Found
774,743
DNA Sequences

How Your Site Compares

Metric Your Site Beane Average Study Average
Species 274 268 206
Genera 203 193 151
Families 104 103 83
EPT Families 3 5 6

Rank 6 of 10 on Beane Rank 15 of 81 in study

🌊 Water Quality Indicators

Moderate

BMWP score: 65 (Moderate) — ASPT score: 5.0 (Good)

13 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)
48 (17.5%)
2. Lumbricidae (Common Earthworms)
14 (5.1%)
3. Naididae (Aquatic Oligochaetes)
14 (5.1%)
4. Enchytraeidae (Potworms)
10 (3.6%)
5. Tipulidae (Crane Flies)
9 (3.3%)
6. Staphylinidae (Rove Beetles)
8 (2.9%)
7. Carabidae (Ground Beetles)
5 (1.8%)
8. Limoniidae (Limoniid Crane Flies)
5 (1.8%)
9. Anthomyiidae (Root-maggot Flies)
4 (1.5%)
10. Ephydridae (Shore Flies)
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 ✗
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

8 fish species detected (5 families, 22 ESVs)
SpeciesFamilyESVs
Barbatula barbatula (Stone Loach) Nemacheilidae 6
Carassius auratus (Goldfish) Cyprinidae 4
Squalius cephalus (Chub) Cyprinidae 2
Cottus bairdii Cottidae 1
Rutilus frisii Cyprinidae 1
Gasterosteus aculeatus (Three-spined Stickleback) Gasterosteidae 1
Barbatula quignardi Nemacheilidae 1
Salmo trutta (Brown Trout / Sea Trout) Salmonidae 1

🪰 EPT Species (Mayflies, Stoneflies & Caddisflies)

5 EPT species detected (3 families, 11 ESVs — E:1 / P:0 / T:4)
SpeciesFamilyESVs
Ephemeroptera (Mayflies)
Baetis rhodani (Large Dark Olive) Baetidae 2
Trichoptera (Caddisflies)
Glyphotaelius pellucidus (Northern Caddisflies) Limnephilidae 3
Limnephilus extricatus (Northern Caddisflies) Limnephilidae 2
Micropterna lateralis (Northern Caddisflies) Limnephilidae 2
Silo nigricornis (Humpless Case-maker Caddisflies) Goeridae 1

🔗 Your Ecological Twin

Most similar site: E1B - parallel channel near source (winterbourne)
River: Channel (different river)
Similarity: 35% of species shared
Download Data

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

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