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

資料紀錄

此資源sampling event的資料已發佈為達爾文核心集檔案（DwC-A），其以一或多組資料表構成分享生物多樣性資料的標準格式。 核心資料表包含 10 筆紀錄。

亦存在 2 筆延伸集的資料表。延伸集中的紀錄補充核心集中紀錄的額外資訊。 每個延伸集資料表中資料筆數顯示如下。

此 IPT 存放資料以提供資料儲存庫服務。資料與資源的詮釋資料可由「下載」單元下載。「版本」表格列出此資源的其它公開版本，以便利追蹤其隨時間的變更。

版本

以下的表格只顯示可公開存取資源的已發布版本。

權利

研究者應尊重以下權利聲明。:

此資料的發布者及權利單位為 NOAA Integrated Ocean Observing System。 This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.

GBIF 註冊

此資源已向GBIF註冊，並指定以下之GBIF UUID: 09d69be4-1f55-469e-976f-6a7ba50ec468。  NOAA Integrated Ocean Observing System 發佈此資源，並經由GBIF-US同意向GBIF註冊成為資料發佈者。

關鍵字

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

聯絡資訊

地理涵蓋範圍

Gulf of America

分類群涵蓋範圍

N/A

時間涵蓋範圍

計畫資料

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

參與計畫的人員:

取樣方法

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.

方法步驟描述:

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.

額外的詮釋資料