📍 C10: Elms below lake inlet (downstream site)

River: Chess Catchment: Colne Filter(s): 47

Your Site at a Glance

177
Species Detected
129
Genera Identified
81
Families Found
488,029
DNA Sequences

How Your Site Compares

Metric Your Site Chess Average Study Average
Species 177 197 206
Genera 129 146 151
Families 81 84 83
EPT Families 7 6 6

Rank 7 of 10 on Chess Rank 51 of 81 in study

🌊 Water Quality Indicators

Good

BMWP score: 101 (Very Good) — ASPT score: 5.6 (Good)

18 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)
43 (24.3%)
2. Naididae (Aquatic Oligochaetes)
19 (10.7%)
3. Cyprinidae (Carp and Allies)
7 (4.0%)
4. Simuliidae (Black Flies)
5 (2.8%)
5. Lumbricidae (Common Earthworms)
3 (1.7%)
6. Baetidae (Small Mayflies)
3 (1.7%)
7. Gasterosteidae (Sticklebacks)
3 (1.7%)
8. Anatidae (Ducks, Geese, and Swans)
3 (1.7%)
9. Hydridae (Freshwater Hydras)
3 (1.7%)
10. Limoniidae (Limoniid Crane Flies)
2 (1.1%)
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 ✓
18/33 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

11 fish species detected (5 families, 99 ESVs)
SpeciesFamilyESVs
Leuciscus leuciscus (Dace) Cyprinidae 11
Phoxinus phoxinus (Minnow) Cyprinidae 11
Squalius cephalus (Chub) Cyprinidae 7
Gobio gobio (Gudgeon) Cyprinidae 6
Barbatula barbatula (Stone Loach) Nemacheilidae 5
Gasterosteus aculeatus (Three-spined Stickleback) Gasterosteidae 4
Cottus bairdii Cottidae 3
Salmo trutta (Brown Trout / Sea Trout) Salmonidae 3
Gobio kovatschevi Cyprinidae 2
Rutilus frisii Cyprinidae 2
Squalius alburnoides Cyprinidae 1

🪰 EPT Species (Mayflies, Stoneflies & Caddisflies)

10 EPT species detected (7 families, 19 ESVs — E:5 / P:1 / T:4)
SpeciesFamilyESVs
Ephemeroptera (Mayflies)
Paraleptophlebia submarginata (Turkey Brown) Leptophlebiidae 4
Baetis vernus (Medium Olive) Baetidae 3
Baetis rhodani (Large Dark Olive) Baetidae 2
Baetis scambus (Small Dark Olive) Baetidae 1
Ephemera danica (The Mayfly) Ephemeridae 1
Plecoptera (Stoneflies)
Nemurella pictetii (Pictet's Stonefly) Nemouridae 1
Trichoptera (Caddisflies)
Silo nigricornis (Humpless Case-maker Caddisflies) Goeridae 2
Chaetopteryx villosa (Northern Caddisflies) Limnephilidae 2
Glyphotaelius pellucidus (Northern Caddisflies) Limnephilidae 2
Wormaldia subnigra (Finger-net Caddisflies) Philopotamidae 1

🔗 Your Ecological Twin

Most similar site: C8 - Loudwater (trout rise)
River: Chess (same river)
Similarity: 37% of species shared
Download Data

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

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