Sediments and biological samples from the 27th expedition of Peru (ANTARXXVII Leg 2) to Antarctica (Bransfield Strait, South Shetland Islands and Hope Bay) - data

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 38 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。

如何引用

研究者應依照以下指示引用此資源。:

Delhaye L, Elskens M, Ricaurte-Villota C, Cerpa L, Kochzius M (2024). Sediments and biological samples from the 27th expedition of Peru (ANTARXXVII Leg 2) to Antarctica (Bransfield Strait, South Shetland Islands and Hope Bay) - data. Version 1.3. SCAR - AntOBIS. Samplingevent dataset. https://ipt.biodiversity.aq/resource?r=antarxxvii-leg2&v=1.3

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 SCAR - AntOBIS。 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: 50c52782-72ac-4d4a-bee0-014c6aede4df。  SCAR - AntOBIS 發佈此資源，並經由Ocean Biodiversity Information System同意向GBIF註冊成為資料發佈者。

關鍵字

Samplingevent; Specimen

聯絡資訊

地理涵蓋範圍

Bransfield Strait, Antarctica

分類群涵蓋範圍

Benthic organisms

時間涵蓋範圍

計畫資料

RECTO applies a multidisciplinary approach in studying evolution and diversity of Southern Ocean faunas. RECTO has 6 main objectives: 1) Reconstruct population histories and phylogenies of selected faunas; 2) Link population histories and refugia to past climate changes; 3) Estimate variation of morphological traits and width of ecological niches; 4) Use physiological and energy limits and traits to model current and future species distributions; 5) Integrate distribution models into hydrodynamic and particle models; and, 6) Develop different scenarios on how target taxa will respond to future climate change. RECTO will focus on six different animal groups, comprising different trophic levels from the micro- over macro-benthos and pelagic crustaceans to fish and seabirds. The selected species differ in their biology, life history traits and dispersal capacities, which are all factors affecting their abilities to cope with environmental changes.

參與計畫的人員:

取樣方法

Sampling at 30 stations was carried out using a Van Veen grab, initially with a large grab (48.5 cm x 47 cm x 25.5 cm) that broke after the first deployment and was replaced by a smaller grab (44 cm x 18.2 cm x 34.5 cm). To ensure sufficient samples, additional replicates were taken per station. The grab was deployed by the crew of the BAP Carrasco, with up to three attempts made at stations where no sample was retrieved due to unsuitable substrate or technical issues, resulting in four abandoned stations. At each successful grab, surface sediments were collected for microbiology, microplastics, and heavy metal studies, with approximately 200 g allocated for heavy metal research. Remaining sediments were shared among research groups and the surplus was sieved to isolate benthos. Benthic organisms found were sorted, photographed, and preserved in ethanol or frozen at -20°C, while tissue samples from brittle stars were preserved in 99% ethanol for DNA analysis before storing in the freezer at -20°C. Rock dredges were used for geological studies but occasionally brought sediments or organisms on board, allowing the team to collect one fish, three sediment samples, three sea stars, and five brittle stars. A Rauschert dredge with a 1 mm mesh size was deployed at three stations on February 26, 2020, after delays caused by weather and technical issues. The dredge was towed at 2 knots for 13–17 minutes per station, with 20 m of cable released per minute and retrieved at 30 m per minute. The first station at 975 m depth was unsuccessful and brought only plankton, amphipods, and ostracods. Adjustments improved results at the next two stations, with the second (46 m depth) yielding diverse organisms, including macroalgae, sponges, sea urchins, and starfish where many of which were not identified due to time constraint. The third station provided significant sediment, benthos, and a large octopus, which was carefully released unharmed. Some samples were shared with collaborators, and algae were not retained due to permit restrictions.

方法步驟描述:

1. please see sampling description

引用文獻

1. Delhaye, Louise J., Marc Elskens, Constanza Ricaurte-Villota, Luis Cerpa, and Marc Kochzius. "Baseline concentrations, spatial distribution and origin of trace elements in marine surface sediments of the northern Antarctic Peninsula." Marine Pollution Bulletin 187 (2023): 114501. https://doi.org/10.1016/j.marpolbul.2022.114501
2. The Scientific Committee on Antarctic Research. (2023). SCAR Report 42 - September 2022 - SCAR Data Policy (2022). Zenodo. https://doi.org/10.5281/zenodo.7825314

額外的詮釋資料