Ants in Guadarrama range

Dataset of ant species occurrences (1: presences / 0: absences) in baits located in six sites along an elevational gradient in the Guadarrama range (central Spain) in .csv format. We aimed to describe the niche of the species considering two main dimensions on resource acquisition: (a) food type and (b) period of aboveground activity. We estimated the use of each food resource by offering baits (5 replicates per treatment) along (c) a ~ 1.600 m elevational gradient. The four food resources were offered in plastic Petri dishes (5.5cm diameter x 0.7cm depth) with two 1.5cm openings to facilitate food collection by ants. (a) To encompass a wide as possible range of food resource types but limiting their number to a manageable quantity, we set the following four levels: sugar water, live crickets, dry worms and seeds (a collection of commercial seeds of different weights, from clovers to lentils). Live crickets were offered as baits by tying the crickets with thread to nails attached to Petri dishes. It was assumed that these would be most attractive to predator species. (b) To define the period of activity, we divided up the 24h cycle of a day into the following four 6-hour periods: morning (6 am to 12 am), afternoon (12 am to 6 pm), evening (6 pm to 12 pm) and night (12 pm to 6 am). (c) Sampling sites were Mediterranean south-facing dry grasslands growing on siliceous substrate with gentle slopes <10% (UTM, datum WGS84): Valdeloshielos (PS1 in the manuscript below): 30T 437745 449434 at 684 m.a.s.l., Soto del Real (PS3): 30T 431575 4513574 at 1044 m.a.s.l. La Barranca (PD4): 30T 416166 4511164 at 1331 m.a.s.l. Puerto de Cotos (PD6): 30T 419717 4519643 at 1786 m.a.s.l. Laguna Chica (PS8): 30T 419276 4520625 at 2026 m.a.s.l. Pico Peñalara (PD9): 30T 419192 4522196 at 2352 m.a.s.l. Columns are: - id. Identificator for the bait. - site. Sampling site. - resource. Food type offered. - period. Central hour for the sampling period. - Aphaenogaster_gibbosa to Tetramorium_forte. 27 species that appeared at least once in the baits. Thus the dataset has 6 sites x 4 food types x 4 time periods x 5 replicates = 480 rows, and 31 columns. Reference Seoane, J., Silvestre, M., Hevia, V., Ariño, R., & Azcárate, F. M. (2021). Abiotic controls, but not species richness, shape niche overlap and breadth of ant assemblages along an elevational gradient in central Spain. Acta Oecologica, 110, 103695. doi: https://doi.org/10.1016/j.actao.2020.103695本数据集为西班牙中部瓜达拉马山（Guadarrama range）沿海拔梯度布设的6个样点的蚂蚁诱集物种出现数据（1表示存在，0表示缺失），格式为.csv文件。本研究旨在从资源获取的两大维度刻画物种生态位：(a) 食物类型，(b) 地表活动时段。我们通过沿(c)约1600米海拔梯度布设诱集装置（每个处理设置5次重复），对各类食物资源的利用情况进行了估算。本次实验选用4种食物资源，置于直径5.5cm、深度0.7cm的塑料培养皿（Petri dish）中，皿身开设2个1.5cm的开口以方便蚂蚁取食。(a) 为覆盖尽可能广泛的食物资源类型同时控制样本数量便于操作，我们设置了4类食物：糖水、活体蟋蟀、干虫以及混合种子（涵盖三叶草、小扁豆等不同重量的市售种子）。活体蟋蟀诱饵通过棉线绑定于培养皿上的铁钉来固定，这类诱饵被认为对捕食性蚂蚁最具吸引力。(b) 为明确活动时段，我们将单日24小时划分为4个6小时周期：上午（6:00至12:00）、下午（12:00至18:00）、傍晚（18:00至24:00）以及夜间（24:00至6:00）。(c) 所有采样点均为地中海气候下的南向干燥草原，生长于硅质基质上，坡度平缓（<10%），采用WGS84基准面的UTM坐标系：巴尔德洛谢洛斯（Valdeloshielos，手稿中记为PS1）：684米海拔处的30T 437745 449434；索托德尔雷亚尔（Soto del Real，PS3）：1044米海拔处的30T 431575 4513574；拉瓦兰卡（La Barranca，PD4）：1331米海拔处的30T 416166 4511164；科托斯山口（Puerto de Cotos，PD6）：1786米海拔处的30T 419717 4519643；拉古纳奇卡（Laguna Chica，PS8）：2026米海拔处的30T 419276 4520625；佩尼亚拉罗峰（Pico Peñalara，PD9）：2352米海拔处的30T 419192 4522196。数据集列信息如下： - id：诱饵唯一标识符 - site：采样点名称 - resource：布设的食物类型 - period：采样时段的中心时刻 - 列Aphaenogaster_gibbosa至Tetramorium_forte：共27种在诱饵中至少出现过1次的蚂蚁物种。 本数据集共计6个样点×4种食物类型×4个时段×5次重复=480条记录，共31列。 参考文献：Seoane, J., Silvestre, M., Hevia, V., Ariño, R., & Azcárate, F. M. (2021). 非生物因子而非物种丰富度调控西班牙中部沿海拔梯度的蚂蚁群落生态位重叠与宽度. Acta Oecologica, 110, 103695. doi: https://doi.org/10.1016/j.actao.2020.103695