說明
Original provider: Virginia Aquarium and Marine Science Center Foundation Dataset credits: Virginia Aquarium Foundation - Susan G. Barco & Gwen G. Lockhart Riverhead Foundation for Marine Research & Preservation - Robert A. DiGiovanni Jr. & Allison M. DePerte Abstract: The data provided were collected as part of the the Virginia and Maryland Sea Turtle Research & Conservation Initiative - funded by the National Marine Fisheries Service Species Recovery Grants program No. NA09NMF4720033. Purpose: Previous sea turtle abundance estimates reported in the Virginia portion of the Chesapeake Bay where developed using aerial surveys without correcting for seasonal differences and availability bias. More recent surveys yielded estimates of availability throughout the turtles' residency periods using radio transmitters and satellite telemetry. These estimates where significantly different then previous surveys and changed over time. This project was conducted in order to quantify turtles surfacing time for the purpose of calculating seasonal and annual differences in availability, conduct aerial surveys in a manner that will allow for the calculation of perception bias, and compare estimates generated during previous projects. Supplemental information: Aerial surveys were conducted along the coastal waters and bays of Virginia and Maryland. This project is broken into two survey periods. The survey platform was a De Havilland twin otter DHC‐6 modified for observational research. The aircraft was configured so as to have two forward observers and a data recorder on their own communication system and have a second team consisting of a belly observer and one additional observer (either port or starboard) along with a data recorder. The separation of the communications systems enables the two teams to function independently thereby functioning as two individual surveys. Groups of sea turles, marine mammals, and other marine mammals were recorded. This method was developed in order to calculate a perception bias using mark recapture techniques. This dataset is the filtered version – meaning all the duplicate sightings have been removed. All records are marked as observed by only team one, only team two, or by both. There is only one record for each sighting even if the animal was sighted by both teams. The raw dataset, with all sighting from both teams, is available by request from the Virginia Aquarium & Marine Science Foundation.
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 5,532 筆紀錄。
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。:
Barco, S. 2014. Virginia and Maryland Sea Turtle Research and Conservation Initiative Aerial Survey Sightings, May 2011 through July 2013. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/1201) on yyyy-mm-dd.
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 OBIS-SEAMAP。 This work is licensed under a Creative Commons Attribution Non Commercial (CC-BY-NC 4.0) License.
GBIF 註冊
此資源已向GBIF註冊,並指定以下之GBIF UUID: b4469a23-f5a7-48e2-a32e-6e30353ea6a0。 OBIS-SEAMAP 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
Occurrence,Marine Animal Survey,Marine Biology,Marine mammals,Sea turtles,Visual Sighting,Aircraft; Observation; Occurrence
外部資料
此資源尚有其他格式可用
OBIS-SEAMAP Dataset Page | http://seamap.env.duke.edu/dataset/1201 UTF-8 Interactive map |
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FGDC Metadata | http://seamap.env.duke.edu/dataset/1201/xml UTF-8 XML |
聯絡資訊
- 元數據提供者 ●
- 散布者
地理涵蓋範圍
North Atlantic
界定座標範圍 | 緯度南界 經度西界 [36.583, -76.396], 緯度北界 經度東界 [38.521, -74.398] |
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分類群涵蓋範圍
Scientific names are based on the Integrated Taxonomic Information System (ITIS).
Subphylum | Vertebrata |
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Subclass | Elasmobranchii (cartilaginous fishes) |
Order | Cetacea (cetaceans) |
Family | Cheloniidae (Sea Turtles) |
Species | Balaenoptera borealis (Sei Whale), Balaenoptera physalus (Fin Whale), Caretta caretta (Loggerhead Sea Turtle), Cetorhinus maximus (basking shark), Chelonia mydas (Green Sea Turtle), Dermochelys coriacea (Leatherback Sea Turtle), Lepidochelys kempii (Kemp's Ridley), Manta birostris (Atlantic manta), Mola mola (ocean sunfish), Rhinoptera bonasus (cownose ray), Sphyrna zygaena (smooth hammerhead), Tursiops truncatus (Common Bottlenose Dolphin) |
時間涵蓋範圍
起始日期 / 結束日期 | 2011-05-22 / 2013-07-31 |
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計畫資料
無相關描述
計畫名稱 | Virginia and Maryland Sea Turtle Research and Conservation Initiative Aerial Survey Sightings, May 2011 through July 2013 |
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經費來源 | NA |
參與計畫的人員:
- 擁有者
取樣方法
NA
研究範圍 | NA |
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方法步驟描述:
- NA
收藏資料
蒐藏名稱 | zd_1201 |
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蒐藏編號 | zd_1201 |
上層採集品識別碼 | OBIS-SEAMAP |
額外的詮釋資料
marine, harvested by iOBIS
目的 | Previous sea turtle abundance estimates reported in the Virginia portion of the Chesapeake Bay where developed using aerial surveys without correcting for seasonal differences and availability bias. More recent surveys yielded estimates of availability throughout the turtles' residency periods using radio transmitters and satellite telemetry. These estimates where significantly different then previous surveys and changed over time. This project was conducted in order to quantify turtles surfacing time for the purpose of calculating seasonal and annual differences in availability, conduct aerial surveys in a manner that will allow for the calculation of perception bias, and compare estimates generated during previous projects. |
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替代的識別碼 | http://ipt.env.duke.edu/resource?r=zd_1201 |