Forest structure and stream salamander diets: Implications for terrestrial-aquatic connectivity
Forest structure and stream salamander diets: Implications for terrestrial-aquatic connectivity
复制标题
森林结构和溪流蝾螈的饮食:对陆地-水生连通性的影响
DOI:
10.1080/03680770.2005.11902014
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发表时间:
2005
期刊:
影响因子:
--
通讯作者:
G. Likens
中科院分区:
文献类型:
--
作者:
W. Lowe;K. Nislow;G. Likens
The concept o f the ecological boundary i s emerging as a useful too! for investigating and understanding ecological processes in heterogeneous landscapes (CADENASSO et al. 2003). Ecosystem ecologists have provided valuable perspectives on the behavior of ecological boundaries, elucidating the regulation of boundary permeability and its implications for energy and nutrient cycles within contiguous patches of different habitat types (BORMANN & LIKENS 1979, HEDIN et al. 1998). These boundary-mediated fluxes and direct effects of ecological boundaries on the distribution and dispersal o f organisms ( e.g., HADDAD 1999) can strongly influence emergent properties of natural systems, including resource dynamics (JEFFERIES 2000), secondary productivity (Pous & HURD 1996), and food web composition and stability (HuxEL & McCANN 1998). The ecological boundary between aquatic and terrestrial habitats exerts fundamental control on headwater stream systems, where both ecosystem processes and food webs of terrestrial and stream habitats are widely viewed as coupled (Ross 1963, WALLACE et al. 1997). The structure and composition o f terrestrial vegetation influence the transfer o f dissolved substances to the stream (e.g., LIKENS & BoRMANN 1995) and regulate in-stream processing of these substances by affecting light, temperature, and hydrologic regimes (HILL et al. 2001, VALETI et al. 2002). Species inhabiting headwater systems rely on the flow o f resources from terrestria1 to stream habitats (WALLACE et al. 1997, NAKANO et al. l999b ), stream to terrestrial habitats (HELFIELD & NAIMAN 200 l, SABo & PowER 2002), and reciprocal flows between these two habitats (NAKANO & MURAKAMI 2001). Research is limited on how terrestrial-aquatic connectivity in headwater food webs responds to natural variation in terrestrial vegetation conditions, and the research that has been done focuses on stream fish (WIPFLI 1997, ALLAN et al. 2003). Broader understanding in this area will create valuable opportunities to bridge ecosystemand community-oriented research in stream systems, and to elucidate more fully the implications of well-established pattems of forest succession (e.g., YooA et al. 1963, ScHWARZ et al. 200 l). This understanding of how riparian forest vegetation affects terrestrial-aquatic links may also be important for forest management that aims to preserve natural ecosystem processes.
DOI:
10.1242/jeb.203.24.3785
发表时间:
2000
期刊:
The Journal of experimental biology
影响因子:
--
作者:
Sheafor,EA;Wood,SC;Tattersall,GJ
通讯作者:
Tattersall,GJ