說明
Downeast Salmon Federation is conducting a presence/absence survey in Hancock and Washington County in December and January to monitor tomcod (also known as frost fish). This is part of a larger citizen science project gathering information on anadromous fish species. Maine is home to 12 species of native sea-run (called diadromous) fish that spend part of their lives in freshwater and part in the sea. These fish make astounding migrations each year with significant impacts to the freshwater, estuary, and marine environments that they move through as they complete their life cycles. Because of the widespread and mobile nature of their life histories, much remains to be known about which particular coastal rivers they occupy, the timing and extent of their migrations, and the number of individuals present. Information about these fish has implications for species conservation, restoration, and management. Atlantic tomcod are one such species that migrate up rivers from the ocean to spawn in the winter. Spawning occurs in shallow brackish or fresh water over gravelly bottom. A female can deposit 6,000-30,000 eggs. Egg incubation takes up to 30 days in 30 to 43ºF water. The average adult is 9-12 in. Life expectancy is 4 years. Atlantic tomcod live in the mouths of streams or estuaries and are resistant to sudden changes in temperature and salinity. Their range is southern Labrador to Virginia. Tomcod eat larval copepods, small crustaceans, small mollusks, worms, as well as fish larvae and are eaten by predators such as Striped Bass and Bluefish. Atlantic tomcod populations have declined due to loss of access to spawning grounds, overfishing, and exposure to toxins. Because they typically live year-round in estuaries, tomcod are particularly subject to stresses from pollutants. Since the commercial fishery closed in the 1950s, there is very little known about their current whereabouts or how well they are doing in Maine rivers and streams. We need to learn more about these amazing creatures to better manage our rivers and streams now and into the future. Information collected by this project is designed to create a more complete picture of where, when, and in what numbers tomcod can be found.
資料紀錄
此資源出現紀錄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 84 筆紀錄。
亦存在 1 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 The Community Environmental Health Laboratory at MDI Biological Laboratory。 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: f3c378aa-92c4-47f2-b718-c9520872ebf2。 The Community Environmental Health Laboratory at MDI Biological Laboratory 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
聯絡資訊
- 出處 ●
- 連絡人
http://orcid.org/https://orcid.org/0000-0003-4869-9802
- 出處 ●
- 連絡人
- 出處 ●
- 連絡人
- 元數據提供者 ●
- 出處 ●
- 使用者 ●
- 連絡人
- 連絡人
地理涵蓋範圍
Downeast Maine, United States
| 界定座標範圍 | 緯度南界 經度西界 [44.323, -68.506], 緯度北界 經度東界 [44.955, -67.104] |
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時間涵蓋範圍
| 起始日期 / 結束日期 | 2009-12-04 / 2020-01-25 |
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計畫資料
Anecdata is a free online citizen science platform developed by the Community Lab at the MDI Biological Laboratory in Bar Harbor, Maine. Anecdata is used by hundreds of individuals and organizations to gather and access citizen science observations and provides a platform to easily collect, manage, and share their citizen science data. How Anecdata works: Project managers create projects, creating datasheets that participants fill out to share their observations. Participants join projects and use the Anecdata website or mobile app to share their observations with the project. Project data is now available for anyone to view and download!
| 計畫名稱 | Anecdata.org |
|---|---|
| 辨識碼 | Anecdata.org |
參與計畫的人員:
- 研究主持人
- 典藏經理
取樣方法
Maine is home to 12 species of native sea-run (called diadromous) fish that spend part of their lives in freshwater and part in the sea. These fish make astounding migrations each year with significant impacts to the freshwater, estuary, and marine environments that they move through as they complete their life cycles. Because of the widespread and mobile nature of their life histories, much remains to be known about which particular coastal rivers they occupy, the timing and extent of their migrations, and the number of individuals present. Information about these fish has implications for species conservation, restoration, and management. Atlantic tomcod are one such species that migrate up rivers from the ocean to spawn in the winter. Spawning occurs in shallow brackish or fresh water over gravelly bottom. A female can deposit 6,000-30,000 eggs. Egg incubation takes up to 30 days in 30 to 43ºF water. The average adult is 9-12 in. Life expectancy is 4 years. Atlantic tomcod live in the mouths of streams or estuaries and are resistant to sudden changes in temperature and salinity. Their range is southern Labrador to Virginia. Tomcod eat larval copepods, small crustaceans, small mollusks, worms, as well as fish larvae and are eaten by predators such as Striped Bass and Bluefish. Atlantic tomcod populations have declined due to loss of access to spawning grounds, overfishing, and exposure to toxins. Because they typically live year-round in estuaries, tomcod are particularly subject to stresses from pollutants. Since the commercial fishery closed in the 1950s, there is very little known about their current whereabouts or how well they are doing in Maine rivers and streams. We need to learn more about these amazing creatures to better manage our rivers and streams now and into the future. Information collected by this project is designed to create a more complete picture of where, when, and in what numbers tomcod can be found.
| 研究範圍 | Downeast Salmon Federation is conducting a presence/absence survey in Hancock and Washington County in December and January to monitor tomcod (also known as frost fish). This is part of a larger citizen science project gathering information on anadromous fish species. Project Goal: Determine the presence and absence of Microgadus tomcod in Downeast Maine. |
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方法步驟描述:
- Participants will visually identify Microgadus tomcod sign, including fish and bird activity.
額外的詮釋資料
| 替代的識別碼 | f3c378aa-92c4-47f2-b718-c9520872ebf2 |
|---|---|
| https://doi.org/10.15468/sq6w35 | |
| https://bison.usgs.gov/ipt/resource?r=tomcod |