Indiana University - Indiana - Hemlocks - 2005-2013

最新バージョン United States Geological Survey により出版 12月 4, 2019 United States Geological Survey
CC0 1.0

DwC-A形式のリソース データまたは EML / RTF 形式のリソース メタデータの最新バージョンをダウンロード:

DwC ファイルとしてのデータ ダウンロード 1,458 レコード English で (68 KB) - 更新頻度: not planned
EML ファイルとしてのメタデータ ダウンロード English で (11 KB)
RTF ファイルとしてのメタデータ ダウンロード English で (10 KB)


As part of a research thesis, aerial imagery for the state of Indiana was examined for evidence of eastern hemlock occurrences. The distribution of Tsuga canadensis in Indiana was reviewed using aerial imagery and followed up by selected ground truthing. This dataset shows locations of less than 1000m2 (non-solid stands). Based on images from 2005, locations randomly selected were visited on foot to verify the presence of the species, through 2013.

データ レコード

この オカレンス(観察データと標本) リソース内のデータは、1 つまたは複数のデータ テーブルとして生物多様性データを共有するための標準化された形式であるダーウィン コア アーカイブ (DwC-A) として公開されています。 コア データ テーブルには、1,458 レコードが含まれています。

この IPT はデータをアーカイブし、データ リポジトリとして機能します。データとリソースのメタデータは、 ダウンロード セクションからダウンロードできます。 バージョン テーブルから公開可能な他のバージョンを閲覧でき、リソースに加えられた変更を知ることができます。





Hobbs, F. Collin. 2013. The biogeography and phylogeography of disjunct eastern hemlock (Tsuga canadensis) populations. Indiana University Doctoral Thesis.



パブリッシャーとライセンス保持者権利者は United States Geological Survey。 To the extent possible under law, the publisher has waived all rights to these data and has dedicated them to the Public Domain (CC0 1.0). Users may copy, modify, distribute and use the work, including for commercial purposes, without restriction.


このリソースをはGBIF と登録されており GBIF UUID: f16589a9-1c6e-4e91-b683-d5018aed4b81が割り当てられています。   GBIF-US によって承認されたデータ パブリッシャーとして GBIF に登録されているUnited States Geological Survey が、このリソースをパブリッシュしました。


Occurrence; plants; species; land cover and land use; null; Observation


F. Collin Hobbs
  • メタデータ提供者
  • 最初のデータ採集者
  • 連絡先
Assistant Professor
Huntington University
2303 College Avenue
46750 Huntington
+1(260) 359-4201
Annie Simpson
  • 最初のデータ採集者
biologist & information scientist
US Geological Survey
12201 Sunrise Valley Drive, Mailstop 302
20192 Reston


The distribution of all smaller plots of hemlock within the state of Indiana in the United States.

座標(緯度経度) 南 西 [38.242, -87.301], 北 東 [40.022, -85.528]


Tsuga canadensis (L.) Carrière -- eastern hemlock

Species Tsuga canadensis (eastern hemlock)


開始日 / 終了日 2005-01-01 / 2013-01-01



タイトル Distribution of Tsuga canadensis in Indiana - locations of less than 1000m2
Study Area Description State of Indiana, from aerial imagery and ground truthing.
研究の意図、目的、背景など(デザイン) Aerial imagery for the state of Indiana was examined for evidence of eastern hemlock occurrences. Based on images from 2005, locations randomly selected were visited on foot to verify the presence of the species, through 2013.


F. Collin Hobbs
  • 論文著者


Some localities include a name of a DNR reference coordinate, collected by Hank Huffmann around 2007 (Consists of the county followed by a unique name for the site. Ex: "Lawrence-GuthieCreek"). All sites with "basis_of_record" as "specimen" will have a herbarium sample collected by F. Collin Hobbs associated with it. The majority of Charles Deam's historic herbarium samples are housed at Indiana University. Records that could be matched up with a degree of certainty to present day stands are referenced with the corresponding catalog number. R. R. Van Stockum's 1979 dissertation includes a record of his visits to eight sites in Indiana where Tsuga canadensis was found, and are referenced where applicable.

Study Extent The study area was the entire state of Indiana, initially performed by referencing aerial imagery from 2005. The study included ground truthing visits and collecting samples from random plots through 2013.
Quality Control The analysis of the aerial imagery for presence/absence of eastern hemlock was followed by physical visits to sites where hemlocks were expected.

Method step description:

  1. visual analysis of shp files from 2005 aerial imagery determined the distribution of eastern hemlock in the state of Indiana. Field trips were taken to verify predicted presence of the trees in randomly selected areas throughout the state. Where polygons were less than 1000m2, a centroid was calculated and is represented in this dataset. A sister dataset of grids for hemlock tree distribution for polygons greater than 1000m2 is included separately.


コレクション名 Charles Deam
Parent Collection Identifier not applicable
標本保存方法 Dried and pressed


  1. Hobbs, F.C., Clay, K. 2015? Mapping plant distributions with multispectral aerial imagery: Tsuga canadensis as a case study. submitted.


代替識別子 f16589a9-1c6e-4e91-b683-d5018aed4b81