說明
This is the OBIS extraction of the Ocean Tracking Network and Norwegian University of Science and Technology (NTNU) Greenland Arctic Charr, consisting of the release tagging metadata, i.e. the location and date when the tagged animal was released, and summarized detection events of tagged individuals. If readers are interested in the source dataset they may also inquire with the project PIs as listed here or on the OTN web site (https://members.oceantrack.org/project?ccode=V2LGAC2).
Abstract:The Arctic charr is a partial migratory species, where some individuals migrate to sea every summer for feeding, while others remain in freshwater their entire life. Since migration is an adaptive response to particular conditions, environmental changes will potentially alter the selective pressures on movement behavior. The changes may also interfere with, or disrupt, a species’ ability to migrate. In either case, environmental changes could lead to the reduction or total loss of a migration with harmful impacts on fish populations. Yet we have little understanding of when to expect these outcomes to occur. Climatic changes are most pronounced in Arctic and subarctic areas, where increases in temperature and precipitation exceed global averages, resulting in changes to the annual growth period . The changes increase favorable temperatures for growth, but stratification in marine fjords may reduce productivity and limit food and hence prolong the marine feeding migration. Hence, it can be expected that changes in migratory phenologies and behavior may be among the first observed response to climate change. Especially, retreating glaciers will initially increase inflow of freshwaters to fjords due to increased melting, but later then the glacier is gone, freshwater run off will be reduced. Consequently, climate change may significantly have an impact on the marine ecosystem used by Arctic during their feeding migration. A recent study from three watercourses in South-western Greenland suggested that the local populations of Arctic charr consisted of a mixture of trophic groups; one group of marine specialists, an estuarine group that may have short and local marine migrations, and two resident morphs from the freshwater habitats. Hence there is a clear potential for a rapid adaptation by the species to changed climatic conditions although the mix of trophic groups may change. To reveal if changed climate may affect migratory behavior and trophic niche use, we will combine acoustic telemetry, physiological sampling techniques, sampling for stable isotopes (SIA) and genomics to examine charr populations in two neighboring fjord systems in Southwestern Greenland. One of the sites receives influx from glacial runoff whereas the other does not. The aim is to quantify variation in migratory tactics and the extent of marine habitat use of anadromous Arctic charr between the two ecologically very different fjord systems, and link distributions to important environmental variables like temperature, salinity and marine productivity. The current lack of knowledge regarding migratory tendencies makes it impossible for resource managers to ensure that different migratory behaviour types are protected, thus ensuring a portfolio of migration strategies are present within a given river system to deal with impending climate change. Knowledge from sites with limited other anthropogenic impacts will be crucial in providing this understanding.
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 221,833 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。:
Davidsen, J.G., Eldøy, S.H, Piper, A.T., Whoriskey, F., Brodersem, J., Power, M. 2023. Marine migrations and trophic niche use of Arctic charr in Southwest Greenland fjords with and without influx from glacial runoff.. Accessed via the Ocean Tracking Network OBIS IPT on INSERT DATE
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 Ocean Tracking Network。 This work is licensed under a Creative Commons Attribution (CC-BY) 4.0 License.
GBIF 註冊
此資源尚未向GBIF註冊
關鍵字
ACOUSTIC TAGS; EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > FISH; Occurrence; Samplingevent
外部資料
此資源尚有其他格式可用
| Greenland Arctic Charr | https://members.oceantrack.org/project?ccode=V2LGAC2 ASCII HTM |
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聯絡資訊
- 內容提供者
http://orcid.org/0000-0002-9027-3066
- 內容提供者
- 出處 ●
- 連絡人
- 內容提供者
- 內容提供者
- 研究主持人
地理涵蓋範圍
KUJALLEQ
| 界定座標範圍 | 緯度南界 經度西界 [60.67, -46.848], 緯度北界 經度東界 [61.002, -45.354] |
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時間涵蓋範圍
| 起始日期 | 2023-08-15 |
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計畫資料
The Arctic charr is a partial migratory species, where some individuals migrate to sea every summer for feeding, while others remain in freshwater their entire life. Since migration is an adaptive response to particular conditions, environmental changes will potentially alter the selective pressures on movement behavior. The changes may also interfere with, or disrupt, a species’ ability to migrate. In either case, environmental changes could lead to the reduction or total loss of a migration with harmful impacts on fish populations. Yet we have little understanding of when to expect these outcomes to occur. Climatic changes are most pronounced in Arctic and subarctic areas, where increases in temperature and precipitation exceed global averages, resulting in changes to the annual growth period . The changes increase favorable temperatures for growth, but stratification in marine fjords may reduce productivity and limit food and hence prolong the marine feeding migration. Hence, it can be expected that changes in migratory phenologies and behavior may be among the first observed response to climate change. Especially, retreating glaciers will initially increase inflow of freshwaters to fjords due to increased melting, but later then the glacier is gone, freshwater run off will be reduced. Consequently, climate change may significantly have an impact on the marine ecosystem used by Arctic during their feeding migration. A recent study from three watercourses in South-western Greenland suggested that the local populations of Arctic charr consisted of a mixture of trophic groups; one group of marine specialists, an estuarine group that may have short and local marine migrations, and two resident morphs from the freshwater habitats. Hence there is a clear potential for a rapid adaptation by the species to changed climatic conditions although the mix of trophic groups may change. To reveal if changed climate may affect migratory behavior and trophic niche use, we will combine acoustic telemetry, physiological sampling techniques, sampling for stable isotopes (SIA) and genomics to examine charr populations in two neighboring fjord systems in Southwestern Greenland. One of the sites receives influx from glacial runoff whereas the other does not. The aim is to quantify variation in migratory tactics and the extent of marine habitat use of anadromous Arctic charr between the two ecologically very different fjord systems, and link distributions to important environmental variables like temperature, salinity and marine productivity. The current lack of knowledge regarding migratory tendencies makes it impossible for resource managers to ensure that different migratory behaviour types are protected, thus ensuring a portfolio of migration strategies are present within a given river system to deal with impending climate change. Knowledge from sites with limited other anthropogenic impacts will be crucial in providing this understanding.
| 計畫名稱 | Marine migrations and trophic niche use of Arctic charr in Southwest Greenland fjords with and without influx from glacial runoff |
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| 經費來源 | OTN is a research and technology development initiative headquartered at Dalhousie University, in Halifax Nova Scotia. OTN is funded by the Canada Foundation for Innovation (CFI) and is grateful to have once received funding from the Natural Sciences and Engineering Research Council of Canada (NSERC) and the Social Sciences and Engineering Research Council of Canada (SSHRC). OTN is also grateful for the continued support from Research Nova Scotia, and OTN's host institution, Dalhousie University. |
| 研究區域描述 | No study area description for this project was provided to OTN for publication. |
| 研究設計描述 | A wide range of aquatic species are tagged with small electronic transmitters, surgically implanted or attached externally, which can operate for up to 20 years. Acoustic receivers arranged in line on the ocean floor as well as attached to buoys, gliders and large animals (e.g. grey seals) pick up the coded acoustic signals from these tags identifying each tagged sea creature that passes within half a kilometer of the receiver. Data collected by these listening stations are subsequently uploaded to one of many compatible data nodes, adding to the reach of an intercompatible network of networks designed and maintained by the Ocean Tracking Network, producing current and reliable records for every part of the globe. Certain classes of electronic tags and listening equipment (receivers) may also be outfitted or co-located with sensors to measure the ocean's temperature, depth, salinity, currents, chemistry, and other properties. |
參與計畫的人員:
取樣方法
Acoustic tags released.
| 研究範圍 | Program started 2023-08-15 and ran until None |
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| 品質控管 | OTN species names are verified using the World Register of Marine Species (WoRMS). If species names on new data cannot be verified against (a) known valid names in OTN, and/or (b) WoRMs the Data Provider will be notified so they can check they are correct. Names that cannot be placed after checking with WoRMS are, where possible, placed on the basis of other authoritative sources, such as the Fishbase or ITIS; and once completely verified a request will be sent to WoRMS for addition of the verified species name. http://members.oceantrack.org/data/discovery/byspecies |
方法步驟描述:
- This resource was created by the Ocean Tracking Network Data Centre as a summarized representation of animal presence determined by electronic tagging efforts. Darwin Core (DwC) records were extracted from the OTN database and filtered and summarized according to international agreed-upon standards.
引用文獻
- Davidsen, J.G., Eldøy, S.H, Piper, A.T., Whoriskey, F., Brodersem, J., Power, M. 2023. Marine migrations and trophic niche use of Arctic charr in Southwest Greenland fjords with and without influx from glacial runoff. In: Ocean Tracking Network Data Centre, Halifax Canada / otndc@dal.ca Retrieved: 2026-01-14 from db.load.oceantrack.org
額外的詮釋資料
Access Constraints: none Use Constraints: Acknowledge the use of specific records from contributing databases in the form appearing in the 'Citation' field thereof (if any); and acknowledge the use of the OBIS facility. For information purposes, email to info@obis.org the full citation of any publication made (printed or electronic) that cites OBIS or any constituent part. Recognize the limitations of data in OBIS. See https://manual.obis.org/policy.html#disclaimer for more details
| 目的 | These data are for display on the OBIS portal and associated mapping programs and for download to personal computers for ad-hoc end-user analysis. |
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| 替代的識別碼 | https://members.oceantrack.org/ipt/resource?r=otnntnugreenlandarcticcha |