Ecological Survey of Cibolo Creek at Jacob's Crossing, Cibolo Nature Center, (1/3/2108)

On Wednesday, January 3rd, I took a limited sampling of aquatic invertebrates, several fish, and flying insects. I will expand on this in the near future.

Aerial net was swept at a height of 1-8 feet above the surface of the water over an area of roughly 1000 square feet for a total of about 10 minutes.

Dip net used with kick method in very shallow riffle below water ford at Jacob's Crossing for roughly 10 minutes. Incidentally captured one male Orangethroat Darter.

Dip net was used to sweep through aquatic vegetation in slower, deeper pools and kicked-up leafpacks for total of roughly 10 minutes.

Samples collected from riffle and from pools were kept separate.

Preliminary observations:

Midge larvae were present in both riffle and pools, but were remarkably abundant in pools. Midges seemed to be the predominant taxa, followed closely by small mayflies.

Amphipods were notably absent.

Two apparently different net-spinning caddisfly taxa were abundant in the riffle, more so than in other localities in the Boerne area sampled so far.

Publicado por mattgeo1990 mattgeo1990, 08 de enero de 2018

Observaciones

Fotos / Sonidos

Observ.

mattgeo1990

Fecha

Enero 3, 2018 05:55 PM CST

Descripción

Healthy and prompt release after observation

Fotos / Sonidos

Qué

Azulillas de Arroyo Género Argia

Observ.

mattgeo1990

Fecha

Enero 3, 2018 07:17 PM CST

Descripción

Collected from fast, shallow riffle.

Fotos / Sonidos

Observ.

mattgeo1990

Fecha

Enero 3, 2018 07:23 PM CST

Descripción

Collected from fast, shallow riffle.

Fotos / Sonidos

Observ.

mattgeo1990

Fecha

Enero 3, 2018 07:25 PM CST

Descripción

Collected from fast, shallow riffle.

Fotos / Sonidos

Square

Qué

Azulillas de Arroyo Género Argia

Observ.

mattgeo1990

Fecha

Enero 3, 2018 07:32 PM CST

Descripción

Collected from fast, shallow riffle.

Fotos / Sonidos

Square

Observ.

mattgeo1990

Fecha

Enero 3, 2018 07:41 PM CST

Descripción

Collected from fast, shallow riffle.

Fotos / Sonidos

Qué

Efímeras Y Parientes Orden Ephemeroptera

Observ.

mattgeo1990

Fecha

Enero 3, 2018 07:44 PM CST

Descripción

Collected from fast, shallow riffle.

Fotos / Sonidos

Square

Observ.

mattgeo1990

Fecha

Enero 3, 2018 07:46 PM CST

Descripción

Collected from fast, shallow riffle.

Fotos / Sonidos

Square

Qué

Caballitos de Alas Angostas Familia Coenagrionidae

Observ.

mattgeo1990

Fecha

Enero 3, 2018 07:52 PM CST

Descripción

Leafpack, slow pool.

Fotos / Sonidos

Square

Qué

Libélulas Esmeralda Familia Corduliidae

Observ.

mattgeo1990

Fecha

Enero 3, 2018 07:54 PM CST

Descripción

Leafpack, slow pool.

Fotos / Sonidos

Square

Qué

Efímeras Y Parientes Orden Ephemeroptera

Observ.

mattgeo1990

Fecha

Enero 3, 2018 08:05 PM CST

Descripción

Leafpack, slow pool.

Fotos / Sonidos

Square

Qué

Libélulas Rayadoras Familia Libellulidae

Observ.

mattgeo1990

Fecha

Enero 3, 2018 08:08 PM CST

Descripción

Leaf pack, slow pool.

Fotos / Sonidos

Square

Observ.

mattgeo1990

Fecha

Enero 3, 2018 05:30 PM CST

Descripción

Captured at Cibolo Creek at dusk. Grid is 5x5mm

Fotos / Sonidos

Square

Qué

Mosquitos Género Chironomus

Observ.

mattgeo1990

Fecha

Enero 3, 2018 09:33 PM CST

Descripción

Captured at Cibolo Creek at dusk. Grid is 5x5mm

Fotos / Sonidos

Square

Observ.

mattgeo1990

Fecha

Enero 3, 2018 05:36 PM CST

Descripción

Captured at Cibolo Creek at dusk. Grid is 5x5mm

Fotos / Sonidos

Square

Qué

Mosquitos Género Chironomus

Observ.

mattgeo1990

Fecha

Enero 3, 2018 05:39 PM CST

Descripción

Captured at Cibolo Creek at dusk. Grid is 5x5mm

Fotos / Sonidos

Square

Qué

Azulillas de Arroyo Género Argia

Observ.

mattgeo1990

Fecha

Enero 3, 2018 08:12 PM CST

Fotos / Sonidos

Square

Observ.

mattgeo1990

Fecha

Enero 3, 2018 08:14 PM CST

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