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  1. D300 大学院環境学研究科
  2. D300a 雑誌掲載論文
  3. 学術雑誌

Contrasting effects of functionally distinct tadpole species on nutrient cycling and litter breakdown in a tropical rainforest stream

http://hdl.handle.net/2237/00027932
http://hdl.handle.net/2237/00027932
1d8e59fc-0f6f-4b4d-9a20-e7397b9fb519
名前 / ファイル ライセンス アクション
FWB-RAMAMONJISOA.pdf FWB-RAMAMONJISOA (319.0 kB)
Fig1.pdf Fig1 (68.1 kB)
Fig2.pdf Fig2 (149.8 kB)
Fig3.pdf Fig3 (76.8 kB)
Fig4.pdf Fig4 (323.2 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2018-04-23
タイトル
タイトル Contrasting effects of functionally distinct tadpole species on nutrient cycling and litter breakdown in a tropical rainforest stream
言語 en
著者 Ramamonjisoa, Noelikanto

× Ramamonjisoa, Noelikanto

WEKO 76247

en Ramamonjisoa, Noelikanto

Search repository
Natuhara, Yosihiro

× Natuhara, Yosihiro

WEKO 76248

en Natuhara, Yosihiro

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利
言語 en
権利情報 This is the peer reviewed version of the following article: [Ramamonjisoa N, Natuhara Y. Contrasting effects of functionally distinct tadpole species on nutrient cycling and litter breakdown in a tropical rainforest stream. Freshwater Biol. 2018;63:202–213. https://doi.org/10.1111/fwb.13053], which has been published in final form at [http://doi.org/10.1111/fwb.13053]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
キーワード
主題Scheme Other
主題 biodiversity–ecosystem functioning
キーワード
主題Scheme Other
主題 density‐dependent effect
キーワード
主題Scheme Other
主題 egestion
キーワード
主題Scheme Other
主題 tadpole mouthparts
キーワード
主題Scheme Other
主題 trophic level
抄録
内容記述 1.There is growing interest in predicting how loss of species diversity and abundance affect the structure and functioning of ecosystems. Tadpole diversity and abundance can be exceptionally high in tropical streams, but, compared to other groups, relatively little is known about their functional roles. We assessed the trophic niches and investigated the contribution of tadpoles to nutrient recycling (excretion and egestion) and litter breakdown in streams. 2.We used two ecomorphologically distinct tadpoles belonging to the two most dominant feeding guilds in Ranomafana, Madagascar: Boophis quasiboehmei (hereafter BQ, generalised mouthpart, grazer) and Mantidactylus melanopleura (hereafter MM, umbelliform funnel mouthpart, suspension feeder). We conducted field incubation experiments to quantify nutrients recycled from excretion and egestion, and set enclosures to analyse the effects of tadpoles on litter breakdown (leaves of Pauridiantha sp. and Chrysophyllum sp.) in nine treatments: control (no tadpoles), monospecific treatment (BQ or MM) at three densities (low, medium, high: 3, 6, 12 tadpoles/0.0625 m2, respectively) and mix‐species treatment (3 BQ + 3 MM, 6 BQ + 6 MM). 3.BQ and MM occupied the same trophic level but tended to differ in their carbon isotopic signatures. MM excreted nitrogen (N) and phosphorus (P) at higher rates, but the two species had similar N:P molar excretion ratio. Nutrients recycled from faecal pellets (egestion) were not immediately available but needed to be mineralised: N increased with time in the water column and was more than 25 times higher in concentration at the end of the experiment (day 16), whereas P concentration showed a hump‐shaped pattern with a maximum value at day 4 of incubation. Effects of tadpoles on litter breakdown depended on tadpole identity, density and litter identity. Particularly, no breakdown occurred at low tadpole density, and effects were generally stronger on the softer texture leaves Pauridiantha sp. We found additive effects of tadpole diversity on litter breakdown. 4.These findings indicate that (1) tadpoles with different mouthparts play different roles on the ecosystem; (2) tadpole faecal pellets are important latent sources of nutrients in freshwater environments; and (3) tadpole abundance exerted stronger effects than species diversity on litter breakdown, emphasising the importance of tadpole biomass and communities in tropical streams. Interspecific variation in nutrient recycling and differential effects on litter breakdown illustrate a strong linkage between species identity and ecosystem function.
言語 en
内容記述タイプ Abstract
内容記述
内容記述 ファイル公開:2019-02-01
言語 ja
内容記述タイプ Other
出版者
言語 en
出版者 Wiley
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ AM
出版タイプResource http://purl.org/coar/version/c_ab4af688f83e57aa
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1111/fwb.13053
ISSN
収録物識別子タイプ PISSN
収録物識別子 00465070
書誌情報 en : Freshwater Biology

巻 63, 号 2, p. 202-213, 発行日 2018-02
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