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関連する概念動画

Migration00:53

Migration

Migration is long-range, seasonal movement from one region or habitat to another. This common strategy, carried out by many different organisms around the world, is an adaptive response that typically corresponds to changes in an organism’s environment, like resource availability or climate. Migrations can involve huge groups of thousands of animals as well as single individuals traveling alone and can range from thousands of kilometers to just a few hundred meters.
Conservation of Declining Populations02:07

Conservation of Declining Populations

Conservation of declining population focuses on ways of detecting, diagnosing, and halting a population decline. The approach uses methods to prevent populations from going extinct.
Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device01:30

Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device

Surveyors use Global Positioning System (GPS) technology to measure the precise location and elevation of points on Earth. In a recent survey, GPS receivers were used to determine the coordinates and elevations of two park monuments. The process involved careful mission planning, data collection, and correction to ensure accuracy. The survey began with mission planning to identify optimal satellite visibility and minimize Position Dilution of Precision (PDOP). A geodetic control point served as...
Field Application of Global Positioning System01:28

Field Application of Global Positioning System

The Global Positioning System (GPS) has become an indispensable tool in fieldwork, offering unparalleled precision and efficiency for surveying, navigation, and infrastructure development. By harnessing signals from a constellation of satellites, GPS receivers determine the location of objects with remarkable speed and accuracy, often completing calculations within a second.Advantages of Modern GPS TechnologyContemporary GPS receivers are designed to meet the practical demands of field...
Gastrulation01:56

Gastrulation

Gastrulation establishes the three primary tissues of an embryo: the ectoderm, mesoderm, and endoderm. This developmental process relies on a series of intricate cellular movements, which in humans transforms a flat, “bilaminar disc” composed of two cell sheets into a three-tiered structure. In the resulting embryo, the endoderm serves as the bottom layer, and stacked directly above it is the intermediate mesoderm, and then the uppermost ectoderm. Respectively, these tissue strata will form...
Selected Data About Geographic Locations01:25

Selected Data About Geographic Locations

Geographic Information Systems (GIS) rely on two core types of data: spatial data and attribute data.Spatial DataSpatial data defines the physical location of features within a coordinate system, typically expressed in terms of latitude and longitude. It provides precise positioning for elements like roads, rivers, or buildings.Attribute DataAttribute data complements spatial data by adding descriptive information about these features. For example, a road's spatial data includes its start and...

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ジオロケーションを使用して長距離の歌う鳥の移住を追跡する.

Bridget J M Stutchbury1, Scott A Tarof, Tyler Done

  • 1Department of Biology, York University, Toronto, Ontario M3J 1P3, Canada. bstutch@yorku.ca

Science (New York, N.Y.)
|February 14, 2009
PubMed
まとめ

紫のマーティンや木のスラッシュのような移住歌う鳥は,ネオトロピカル経路の地図を作成するためにジオロケーションを使用して追跡されました. 発見は,生息地の変化のなかでの保全に不可欠な,相互に関連した繁殖と冬を過ごす場所を明らかにしています.

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科学分野:

  • 鳥類学 鳥類学とは,鳥類学である.
  • エコロジー エコロジー エコロジー
  • 保護生物学の保護生物学

背景:

  • 渡り鳥の歌う鳥は,繁殖地と冬を過ごす場所の間で長距離の旅をする.
  • 移住経路を理解することは,効果的な保全戦略に不可欠です.
  • 新熱帯の移動鳥は,生息地の喪失と気候変動による脅威に直面しています.

研究 の 目的:

  • 紫色のマーチン (Progne subis) と木のスラッシュ (Hylocichla mustelina) の新熱帯地域への移住ルートをマッピングする.
  • これらの種の繁殖集団と冬を過ごす集団の相互関係を評価する.
  • 春の移動のペースとパターンを決定する.

主な方法:

  • 紫色のマーチンと木のツラスの繁殖個体に対して,光レベルのジオロケーション装置の導入.
  • 移住経路とタイミングを再構築するためにジオロケーションデータの分析.
  • 占領された冬の領土の地理的地図作成.

主要な成果:

  • ネオトロピクスへの移住路線は,両種にとってうまく地図化されました.
  • 中米の狭い東西帯に同じ繁殖集団の木が冬を過ごす地域を示しており,これは人口の高い接続性を示しています.
  • 春の移動のペースは一般的に高速 (233577 km/day) であったが,メキシコ湾を横断するのではなく,陸路 (159 km/day) でよりゆっくりと移動した個体があった.

結論:

  • この研究は,移動鳥の歌う鳥の繁殖地と冬を過ごす場所の間の重要なつながりを強調しています.
  • 移動経路と冬を過ごす地域の正確なマッピングは,環境変化の影響を予測するために不可欠です.
  • ネオトロピカル地域における保全活動は,これらの移動集団の生存にとって極めて重要です.