Infauna UNIS AB-x21

Записи данных

Данные этого находка ресурса были опубликованы в виде Darwin Core Archive (DwC-A), который является стандартным форматом для обмена данными о биоразнообразии в виде набора из одной или нескольких таблиц. Основная таблица данных содержит 72 записей.

Данный экземпляр IPT архивирует данные и таким образом служит хранилищем данных. Данные и метаданные ресурсов доступны для скачивания в разделе Загрузки. В таблице версий перечислены другие версии ресурса, которые были доступны публично, что позволяет отслеживать изменения, внесенные в ресурс с течением времени.

Версии

В таблице ниже указаны только опубликованные версии ресурса, которые доступны для свободного скачивания.

Как оформить ссылку

Исследователи должны дать ссылку на эту работу следующим образом:

Wikström K M E, Maurer Z A, Nevstad M B, Sander L, Olsen Benjaminsen V, Bögel L, Gonzalez Fajardo S, Harton K A, Modin H M, Morin E C F, Scholz K, Walder T, Sen A, Silberberger M, Renaud P (2025). Infauna UNIS AB-x21. Version 1.0. The University Centre in Svalbard. Occurrence dataset. https://ipt.gbif.no/resource?r=infauna_unis_abx21&v=1.0

Права

Исследователи должны соблюдать следующие права:

Публикующей организацией и владельцем прав на данную работу является The University Centre in Svalbard. Эта работа находится под лицензией Creative Commons Attribution (CC-BY 4.0).

Регистрация в GBIF

Этот ресурс был зарегистрирован в GBIF, ему был присвоен следующий UUID: 9191a84f-032a-4c9f-806a-80e1651e2522.  The University Centre in Svalbard отвечает за публикацию этого ресурса, и зарегистрирован в GBIF как издатель данных при оподдержке GBIF Norway.

Ключевые слова

Occurrence; Observation; EARTH SCIENCE> BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > BENTHIC

Контакты

Географический охват

Three fjords in Svalbard; Kongsfjorden, Rijpfjorden and Raudfjorden.

Таксономический охват

Описание отсутсвует

Временной охват

Данные проекта

Course research cruise undertaken for the masters and PhD course AB-x21 at UNIS Ausust 2025, onboard R/V Helmer Hanssen. Infauna data from three Svalbard fjords: Kongsfjorden, Rijpfjorden and Raudfjorden. Data from one Van Veen grab per fjord. Grab samples processed through sieves (smallest mesh was 0.5 mm). The organsims were identified to the lowest taxonomic level possible by the students under supervision.

Исполнители проекта:

Методы сбора

The benthic infaunal samples were collected by RV Helmer Hanssen, operated by UIT University of Tromsø between 20th of August 2025 and 28th of August 2025. A Van Veen grab sampler, which is lowered to the seafloor was used. This is a commonly employed method to study soft-bottom communities (e.g. Cochrane et al., 2012, Willassen et al., 2022, Włodarska-Kowalczuk et al. 2019). The grab has a clamshell design that allows it to enclose a defined sediment area when lifted from the seabed. The model used during this survey had an effective sampling area of approximately 0.1 m2 sufficient to capture the sediment layer where most macrofaunal organisms reside. The first sampling station (Station 722) took place in Kongsfjorden. From there, the vessel continued further north to Rijpfjorden, where the second station (Station 747) was located close to shore of Nordaustlandet. The track then proceeded southwestward across the northern shelf, with the final sampling station (Station 761) situated in Raudfjorden, at the northwestern tip of Spitsbergen. (See table 1 and figure 1) At each station, two replicate grabs were taken. One grab was dedicated to infaunal processing, while the other was used exclusively for the collection of environmental parameters (chlorophyll a, phaeophytin, total organic carbon [TOC], and grain size). This separation ensured that biological samples were not disturbed or reduced by subsampling, and that environmental measurements were taken from undisturbed material. After each deployment, the grab was carefully retrieved. Samples were only accepted if the jaws had closed properly and if the sediment surface was intact and undisturbed. If the grab was incomplete (e.g., insufficient sediment volume, leakage, or partial closure), it was discarded and redeployed. Infauna processing The grab designated for infauna was retrieved and emptied onto a cascade table for washing. Sediment was gently flushed with seawater and passed sequentially through a 5 mm sieve and a 0.5 mm sieve. The 5 mm mesh retained larger debris such as stones and shells, while the 0.5 mm mesh retained the macrofaunal fraction of the sample. The material remaining on both sieves was transferred to sorting trays and examined immediately on board. Organisms were carefully picked out and identified to the lowest practicable taxonomic level using microscopes. Immediate processing helped to ensure a good quality of identification features and prevent loss of delicate taxa. Following identification and counting, specimens were preserved in 70% ethanol for long-term storage and further laboratory work.

Описание этапа методики:

1. The benthic infaunal samples were collected by RV Helmer Hanssen, operated by UIT University of Tromsø between 20th of August 2025 and 28th of August 2025. A Van Veen grab sampler, which is lowered to the seafloor was used. This is a commonly employed method to study soft-bottom communities (e.g. Cochrane et al., 2012, Willassen et al., 2022, Włodarska-Kowalczuk et al. 2019). The grab has a clamshell design that allows it to enclose a defined sediment area when lifted from the seabed. The model used during this survey had an effective sampling area of approximately 0.1 m2 sufficient to capture the sediment layer where most macrofaunal organisms reside. The first sampling station (Station 722) took place in Kongsfjorden. From there, the vessel continued further north to Rijpfjorden, where the second station (Station 747) was located close to shore of Nordaustlandet. The track then proceeded southwestward across the northern shelf, with the final sampling station (Station 761) situated in Raudfjorden, at the northwestern tip of Spitsbergen. (See table 1 and figure 1) At each station, two replicate grabs were taken. One grab was dedicated to infaunal processing, while the other was used exclusively for the collection of environmental parameters (chlorophyll a, phaeophytin, total organic carbon [TOC], and grain size). This separation ensured that biological samples were not disturbed or reduced by subsampling, and that environmental measurements were taken from undisturbed material. After each deployment, the grab was carefully retrieved. Samples were only accepted if the jaws had closed properly and if the sediment surface was intact and undisturbed. If the grab was incomplete (e.g., insufficient sediment volume, leakage, or partial closure), it was discarded and redeployed. Infauna processing The grab designated for infauna was retrieved and emptied onto a cascade table for washing. Sediment was gently flushed with seawater and passed sequentially through a 5 mm sieve and a 0.5 mm sieve. The 5 mm mesh retained larger debris such as stones and shells, while the 0.5 mm mesh retained the macrofaunal fraction of the sample. The material remaining on both sieves was transferred to sorting trays and examined immediately on board. Organisms were carefully picked out and identified to the lowest practicable taxonomic level using microscopes. Immediate processing helped to ensure a good quality of identification features and prevent loss of delicate taxa. Following identification and counting, specimens were preserved in 70% ethanol for long-term storage and further laboratory work.

Дополнительные метаданные