📍 B5: Watton Lamas Control (upriver) (Lammas Upper)

River: Beane Catchment: Upper Lea (Hertfordshire) Filter(s): 104

Your Site at a Glance

133
Species Detected
108
Genera Identified
68
Families Found
1,251,752
DNA Sequences

How Your Site Compares

Metric Your Site Beane Average Study Average
Species 133 268 206
Genera 108 193 151
Families 68 103 83
EPT Families 4 5 6

Rank 9 of 10 on Beane Rank 64 of 81 in study

🌊 Water Quality Indicators

Moderate

BMWP score: 68 (Moderate) — ASPT score: 5.2 (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)
29 (21.8%)
2. Lumbricidae (Common Earthworms)
4 (3.0%)
3. Tipulidae (Crane Flies)
4 (3.0%)
4. Psychodidae (Moth Flies)
4 (3.0%)
5. Drosophilidae (Vinegar Flies)
4 (3.0%)
6. Dixidae (Dixid Midges)
3 (2.3%)
7. Naididae (Aquatic Oligochaetes)
3 (2.3%)
8. Agromyzidae (Leaf-miner Flies)
3 (2.3%)
9. Anthomyiidae (Root-maggot Flies)
3 (2.3%)
10. Muridae (Old World Mice and Rats)
3 (2.3%)
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 ✗
16/33 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

5 fish species detected (5 families, 12 ESVs)
SpeciesFamilyESVs
Cottus bairdii Cottidae 3
Leuciscus leuciscus (Dace) Cyprinidae 1
Phoxinus phoxinus (Minnow) Cyprinidae 1
Gasterosteus aculeatus (Three-spined Stickleback) Gasterosteidae 1
Salmo trutta (Brown Trout / Sea Trout) Salmonidae 1

🪰 EPT Species (Mayflies, Stoneflies & Caddisflies)

5 EPT species detected (4 families, 8 ESVs — E:2 / P:0 / T:3)
SpeciesFamilyESVs
Ephemeroptera (Mayflies)
Baetis rhodani (Large Dark Olive) Baetidae 1
Serratella ignita (Blue Winged Olive) Ephemerellidae 1
Trichoptera (Caddisflies)
Leptocerus tineiformis (Long-horned Caddisflies) Leptoceridae 2
Enoicyla pusilla (Northern Caddisflies) Limnephilidae 2
Limnephilus extricatus (Northern Caddisflies) Limnephilidae 2

🔗 Your Ecological Twin

Most similar site: E2 - Watercress Centre
River: Ewelme Brook (different river)
Similarity: 29% of species shared
Download Data

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

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