当前位置: X-MOL 学术Austral Ecol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Agricultural modification to vegetation drives presence and abundance of a threatened fossorial legless lizard
Austral Ecology ( IF 1.6 ) Pub Date : 2020-12-13 , DOI: 10.1111/aec.12986
David T. Y. Wong 1 , Bernd Gruber 1 , Stephen D. Sarre 1 , William S. Osborne 1
Affiliation  

Agricultural modification is one of the main drivers of global biodiversity decline. Vegetation clearance, tillage, grazing, and the application of fertilisers and pesticides have significantly affected native plants and animals. Reptiles can be vulnerable to agricultural practices, and localised declines in reptile biodiversity have been detected. However, the causes of these declines are likely to be many and will vary among reptiles with different life histories. Fossorial reptiles (those that mainly live below ground) are likely to be particularly vulnerable to soil and ground cover disturbance and yet are little studied in the context of agricultural practices. Here, we test the proposition that habitat disturbance caused by agricultural modification is a good predictor of decline or absence of a fossorial lizard. Specifically, we used boosted regression trees to model the relationship between five habitat factors and site abundance of the threatened Pink‐tailed Worm‐lizard (Aprasia parapulchella; Pygopodidae). We found that vegetation characteristics were the best predictors of A. parapulchella abundance. In particular, the relative contributions to our model of percentage cover of native large tussock‐forming grasses and site floristic score were 46% and 33%, respectively. Other variables that contributed to the explanation of abundance were percentage cover of rocks (10%), number of turnable rocks (5%) and relative density of rocks occupied by ants of the size class known to occur with A. parapulchella (5%). Our findings suggest that agricultural management or restoration strategies that promote ground‐layer vegetation characteristic of low levels of modification are likely to be most beneficial for the conservation of this species. Our findings and methods may be applicable to understand and study the presence and abundance of other fossorial or semi‐fossorial reptiles with specialised habitat preferences. Further research is required to establish the generality of our findings with respect to other such species around the world.

中文翻译:

农业对植被的改造导致受威胁的无腿蜥蜴的存在和丰富

农业改造是全球生物多样性下降的主要驱动力之一。植被清除,耕作,放牧以及化肥和农药的施用已大大影响了本地动植物。爬行动物可能易受农业行为的影响,并且已经发现爬行动物生物多样性的局部下降。但是,造成这些下降的原因可能很多,并且在具有不同生活史的爬行动物之间也会有所不同。爬行类(主要生活在地下)特别容易受到土壤和地面覆盖物的干扰,但在农业实践中很少进行研究。在这里,我们测试了这样一个命题,即由农业改造引起的栖息地干扰可以很好地预测软体蜥蜴的数量减少或减少。具体来说,裙带菜; y科(Pygopodidae)。我们发现植被特征是副伞菌丰度的最佳预测因子。特别是,对我们的本地大型草丛形成草百分比覆盖率模型和立地植物区系得分对我们模型的相对贡献分别为46%和33%。有助于解释丰度的其他变量包括岩石的覆盖率(10%),可旋转的岩石数(5%)以及被副产带菌的大小等级的蚂蚁占据的岩石的相对密度(5%)。我们的发现表明,促进低水平修饰的地表植被特征的农业管理或恢复策略可能最有利于该物种的保护。我们的发现和方法可能适用于了解和研究具有特殊栖息地偏好的其他软体动物或半软体动物的存在和丰富。需要进一步的研究来确定我们对世界上其他此类物种的发现的普遍性。
更新日期:2020-12-13
down
wechat
bug