ダウンロード数: 675
このアイテムのファイル:
ファイル | 記述 | サイズ | フォーマット | |
---|---|---|---|---|
s00442-012-2308-x.pdf | 2.77 MB | Adobe PDF | 見る/開く |
タイトル: | Global meta-analysis for controlling factors on carbon stable isotope ratios of lotic periphyton. |
著者: | Ishikawa, Naoto F Doi, Hideyuki https://orcid.org/0000-0002-2701-3982 (unconfirmed) Finlay, Jacques C |
著者名の別形: | 石川, 尚人 |
キーワード: | δ13C variation Regional control Local control Structural equation modeling Lotic ecosystem |
発行日: | Oct-2012 |
出版者: | Springer-Verlag |
誌名: | Oecologia |
巻: | 170 |
号: | 2 |
開始ページ: | 541 |
終了ページ: | 549 |
抄録: | Carbon stable isotope ratios (δ(13)C) are widely used to trace resource transfer pathways, yet δ(13)C variation in freshwater autotrophs is not yet fully understood. We have analyzed data from 42 published studies, supplemented with some unpublished data, to show the determinants of lotic periphyton δ(13)C. At large spatial scales, we observed broad differences in periphyton δ(13)C among biomes and consistent longitudinal variation related to watershed area. Longitudinal increases in δ(13)C indicate the importance of in-stream processes on lotic carbon cycles and autotroph δ(13)C variation. At local spatial scales, periphyton δ(13)C was negatively related to canopy cover and water current velocity and positively related to chlorophyll a density. Autotroph δ(13)C varied among taxonomic groups. Cyanobacteria and red algae had significantly higher and lower δ(13)C than other taxa, respectively. A hierarchical model across spatial scales showed that local controls for periphyton δ(13)C were nested by regional controls, which suggested that productivity and CO(2) availability determine δ(13)C. Overall, our results reveal general patterns of periphyton δ(13)C and provide improved information for study design and the use of δ(13)C in isotopic mixing models in lotic food web studies. |
著作権等: | The final publication is available at www.springerlink.com This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
URI: | http://hdl.handle.net/2433/160695 |
DOI(出版社版): | 10.1007/s00442-012-2308-x |
PubMed ID: | 22466861 |
出現コレクション: | 学術雑誌掲載論文等 |
このリポジトリに保管されているアイテムはすべて著作権により保護されています。