📍 E5: Braze Lane

River: Ewelme Brook Catchment: Thames & Chilterns South Filter(s): 18

Your Site at a Glance

243
Species Detected
185
Genera Identified
115
Families Found
1,265,529
DNA Sequences

How Your Site Compares

Metric Your Site Ewelme Brook Average Study Average
Species 243 174 206
Genera 185 133 151
Families 115 81 83
EPT Families 11 6 6

Rank 2 of 6 on Ewelme Brook Rank 30 of 81 in study

🌊 Water Quality Indicators

Very Good

BMWP score: 131 (Very Good) — ASPT score: 6.2 (Excellent)

21 scoring macroinvertebrate families detected

Near-natural conditions with an unpolluted, diverse macroinvertebrate community.

🔍 Notable Findings

Conservation Species:

Invasive Species:

🦋 Top 10 Families at Your Site

1. Chironomidae (Non-biting Midges)
40 (16.5%)
2. Naididae (Aquatic Oligochaetes)
21 (8.6%)
3. Lumbricidae (Common Earthworms)
9 (3.7%)
4. Psychodidae (Moth Flies)
5 (2.1%)
5. Drosophilidae (Vinegar Flies)
4 (1.6%)
6. Enchytraeidae (Potworms)
4 (1.6%)
7. Lumbriculidae (Aquatic Earthworms)
3 (1.2%)
8. Elmidae (Riffle Beetles)
3 (1.2%)
9. Phalangiidae (Long-legged Harvestmen)
3 (1.2%)
10. Isotomidae (Isotomid Springtails)
3 (1.2%)
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
20/33 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

3 fish species detected (3 families, 18 ESVs)
SpeciesFamilyESVs
Salmo trutta (Brown Trout / Sea Trout) Salmonidae 7
Cottus bairdii Cottidae 2
Phoxinus phoxinus (Minnow) Cyprinidae 1

🪰 EPT Species (Mayflies, Stoneflies & Caddisflies)

13 EPT species detected (11 families, 23 ESVs — E:3 / P:0 / T:10)
SpeciesFamilyESVs
Ephemeroptera (Mayflies)
Baetis rhodani (Large Dark Olive) Baetidae 5
Serratella ignita (Blue Winged Olive) Ephemerellidae 2
Paraleptophlebia submarginata (Turkey Brown) Leptophlebiidae 1
Trichoptera (Caddisflies)
Sericostoma personatum (Sericostomatid Caddisflies) Sericostomatidae 3
Silo nigricornis (Humpless Case-maker Caddisflies) Goeridae 2
Leptocerus tineiformis (Long-horned Caddisflies) Leptoceridae 2
Rhyacophila dorsalis (Free-living Caddisflies) Rhyacophilidae 2
Apatania cimbrica (Apataniid Caddisflies) Apataniidae 1
Silo pallipes (Humpless Case-maker Caddisflies) Goeridae 1
Crunoecia irrorata (Lepidostomatid Caddisflies) Lepidostomatidae 1
Drusus annulatus (Northern Caddisflies) Limnephilidae 1
Limnephilus marmoratus (Northern Caddisflies) Limnephilidae 1
Lype reducta (Tube-case Caddisflies) Psychomyiidae 1

🔗 Your Ecological Twin

Most similar site: E6 - Brook Street
River: Ewelme Brook (same river)
Similarity: 47% of species shared
Download Data

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

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