Competition at the range boundary in the slimy salamander: using reciprocal transplants for studies on the role of biotic interactions in spatial distributions
Competition at the range boundary in the slimy salamander: using reciprocal transplants for studies on the role of biotic interactions in spatial distributions
复制标题
DOI：
10.1111/j.1365-2656.2008.01468.x
复制
发表时间：
2009-01-01
影响因子：
4.8
通讯作者：
Apodaca, Joseph J.
中科院分区：
文献类型：
--
作者：
Cunningham, Heather R.;Rissler, Leslie J.;Apodaca, Joseph J.
确定影响物种分布的因素一直是生态学领域的长期目标。生态位模型等新技术在解决生态学、进化生物学和行为生态学中的许多广泛问题上具有潜在的帮助，本研究将大尺度生态位模型与生物相互作用的细尺度研究相结合，探讨了非生物和生物相互作用如何影响陆生蝾螈物种Plethodon daminosus的空间分布（北方粘蝾螈），在一个潜在的接触区共享Plethodon密西西比州（密西西比粘蝾螈）。在分布区内部的核心生境和接触区分布在独特的环境生态位空间中。对成年蝾螈的质量损失有显著影响。蝾螈在与异源种相互作用时损失更多的质量。非生物条件强烈影响竞争对蝾螈的影响。在压力环境条件下，在现场网站位于接触区，蝾螈失去了更多的质量比现场网站位于内部的范围。此外，成年蝾螈的范围边缘种群和核心种群（从内部的范围）在各自的能力，在非生物条件下的接触区的竞争。
Determining the factors that influence the distribution of species has been a longstanding goal in the field of ecology. New techniques such as ecological niche modelling have the potential to aid in addressing many broad questions in ecology, evolutionary biology, and behavioural ecology.This study combines broad-scale ecological niche models with fine-scaled studies of biotic interactions to examine how abiotic and biotic interactions affect the spatial distribution of the terrestrial salamander species Plethodon glutinosus (northern slimy salamander), in a potential contact zone shared with Plethodon mississippi (Mississippi slimy salamander).The core habitat in the interior portion of the range of P. glutinosus and the contact zone are distributed in unique environmental niche space.The form of competition, inter- or intraspecific, significantly affected mass loss of adult salamanders. Salamanders lost more mass when interacting with a heterospecific.Abiotic conditions strongly influenced the impact of competition on salamanders. Under stressful environmental conditions at the field site located in the contact zone, salamanders lost more mass than at the field site located in the interior of the range.Furthermore, adult salamanders from range-edge populations and core populations (from the interior of the range) differed in their respective abilities to compete under the abiotic conditions in the contact zone.