LA MBON Louisiana Oyster Reef-Associated Benthic Biodiversity - Biodiversity Information

Registros

Los datos en este recurso de evento de muestreo han sido publicados como Archivo Darwin Core(DwC-A), el cual es un formato estándar para compartir datos de biodiversidad como un conjunto de una o más tablas de datos. La tabla de datos del core contiene 40 registros.

también existen 2 tablas de datos de extensiones. Un registro en una extensión provee información adicional sobre un registro en el core. El número de registros en cada tabla de datos de la extensión se ilustra a continuación.

Este IPT archiva los datos y, por lo tanto, sirve como repositorio de datos. Los datos y los metadatos del recurso están disponibles para su descarga en la sección descargas. La tabla versiones enumera otras versiones del recurso que se han puesto a disposición del público y permite seguir los cambios realizados en el recurso a lo largo del tiempo.

Versiones

La siguiente tabla muestra sólo las versiones publicadas del recurso que son de acceso público.

Derechos

Los usuarios deben respetar los siguientes derechos de uso:

El publicador y propietario de los derechos de este trabajo es NOAA Integrated Ocean Observing System. Esta obra está bajo una licencia Creative Commons de Atribución/Reconocimiento (CC-BY 4.0).

Registro GBIF

Este recurso ha sido registrado en GBIF con el siguiente UUID: a802e813-af22-4047-a7cd-0b9ec9961ce4.  NOAA Integrated Ocean Observing System publica este recurso y está registrado en GBIF como un publicador de datos avalado por GBIF-US.

Palabras clave

occurrence; oyster; louisiana; oyster reef; benthic; reef-associated; habitat trays; estuarine; observation; oyster; louisiana; oyster reef; benthic; reef-associated; habitat trays; estuarine

Contactos

Cobertura geográfica

Gulf of America

Cobertura temporal

Datos del proyecto

This project will establish a new MBON effort in coastal Louisiana, focusing on highly productive and diverse estuarine ecosystems as sea level rise sentinels

Personas asociadas al proyecto:

Métodos de muestreo

At each oyster reef sediment organic matter and reef material are quantified within 6 haphazardly placed 0.25 x 0.25 m quadrats. Within each quadrat, sediment for organic matter quantification is collected by pushing a 50ml core into the sediment. The core contents are then emptied into a pre-labeled whirl-pak. In the lab, organic matter is quantified using the Loss-on-Ignition method. Next, all reef material within the quadrat up to 10cm depth is collected and rinsed of excess mud. Reef material (live and dead shell material) volume is quantified using the volume displacement method and live oysters and mussels are counted. The first ten live oysters are measured for shell height from umbo to tip. Barnacles are recorded on a relative abundance scale: 0 – no live barnacles; 1 – 1-10 live barnacles; 2 – 11-50 live barnacles; 3 – > 50 live barnacles. The contents of the reef material sampling are added to pre-filled benthic habitat trays so that the contents of one quadrat go into one tray. The benthic habitat trays (n=6, 0.48 × 0.48 x 0.10 m; 20 L) are lined with 3-mm chicken wire and 1-mm mesh bags and pre-filled with ~3L of disarticulated oyster shell. Once all six trays are topped with reef material they are placed in a row on the oyster reef running parallel to shore. A hydrophone (ST 300HF or ST 600HF) set to record continuously a with a 48 kHz sampling rate and high pre-amp gain is attached to a sandbag and deployed in the center of the row of trays. All sampling gear is left for two weeks to allow the community to develop. After two weeks the habitat trays are collected by cinching closed the mesh bag prior to pulling the tray off of the bottom. Once all trays are collected the mesh bags are tied shut and removed from the trays. Excess mud is rinsed from the bags and all material is rinsed through a 1mm mesh sieve. Larger shells are removed and all material retained on the mesh is frozen for future analysis. When ready for processing samples are thawed and rinsed through a 1mm sieve. Material retained on the sieve is visually inspected under 10x magnification and all organisms identified are retained and sorted into probable unique taxa groups. Taxa groups are reviewed and identified to the lowest practicable taxonomic unit (typically species). Individuals within taxa groups are counted, weighed, then dried for 48 hours at 60℃, or until a stable dry weight is reached. When new taxa to the dataset taxa are encountered a voucher specimen is collected. The specimen collected as a voucher is placed into 90% ethanol after a wet weight is recorded. This voucher specimen is recorded separately. The voucher specimens are deposited into the LUMCON Natural History Collection so that taxonomic identification can be continually refined it necessary. Post-processing of hydrophone recordings is described elsewhere.

Descripción de la metodología paso a paso:

1. At each oyster reef sediment organic matter and reef material are quantified within 6 haphazardly placed 0.25 x 0.25 m quadrats. Within each quadrat, sediment for organic matter quantification is collected by pushing a 50ml core into the sediment. The core contents are then emptied into a pre-labeled whirl-pak. In the lab, organic matter is quantified using the Loss-on-Ignition method. Next, all reef material within the quadrat up to 10cm depth is collected and rinsed of excess mud. Reef material (live and dead shell material) volume is quantified using the volume displacement method and live oysters and mussels are counted. The first ten live oysters are measured for shell height from umbo to tip. Barnacles are recorded on a relative abundance scale: 0 – no live barnacles; 1 – 1-10 live barnacles; 2 – 11-50 live barnacles; 3 – > 50 live barnacles. The contents of the reef material sampling are added to pre-filled benthic habitat trays so that the contents of one quadrat go into one tray. The benthic habitat trays (n=6, 0.48 × 0.48 x 0.10 m; 20 L) are lined with 3-mm chicken wire and 1-mm mesh bags and pre-filled with ~3L of disarticulated oyster shell. Once all six trays are topped with reef material they are placed in a row on the oyster reef running parallel to shore. A hydrophone (ST 300HF or ST 600HF) set to record continuously a with a 48 kHz sampling rate and high pre-amp gain is attached to a sandbag and deployed in the center of the row of trays. All sampling gear is left for two weeks to allow the community to develop. After two weeks the habitat trays are collected by cinching closed the mesh bag prior to pulling the tray off of the bottom. Once all trays are collected the mesh bags are tied shut and removed from the trays. Excess mud is rinsed from the bags and all material is rinsed through a 1mm mesh sieve. Larger shells are removed and all material retained on the mesh is frozen for future analysis. When ready for processing samples are thawed and rinsed through a 1mm sieve. Material retained on the sieve is visually inspected under 10x magnification and all organisms identified are retained and sorted into probable unique taxa groups. Taxa groups are reviewed and identified to the lowest practicable taxonomic unit (typically species). Individuals within taxa groups are counted, weighed, then dried for 48 hours at 60℃, or until a stable dry weight is reached. When new taxa to the dataset taxa are encountered a voucher specimen is collected. The specimen collected as a voucher is placed into 90% ethanol after a wet weight is recorded. This voucher specimen is recorded separately. The voucher specimens are deposited into the LUMCON Natural History Collection so that taxonomic identification can be continually refined it necessary. Post-processing of hydrophone recordings is described elsewhere.

Metadatos adicionales