Soil moisture mediates alpine life form and community productivity responses to warming

环境科学 含水量 生产力 全球变暖 气候变化 生态系统 融雪 福布 植物群落 生态学 生长季节 水分 土壤水分 农学 生态演替 草原 土壤科学 地理 生物 地表径流 地质学 宏观经济学 气象学 经济 岩土工程
作者
Daniel E. Winkler,Kenneth James Chapin,Lara M. Kueppers
出处
期刊:Ecology [Wiley]
卷期号:97 (6): 1553-1563 被引量:79
标识
DOI:10.1890/15-1197.1
摘要

Climate change is expected to alter primary production and community composition in alpine ecosystems, but the direction and magnitude of change is debated. Warmer, wetter growing seasons may increase productivity; however, in the absence of additional precipitation, increased temperatures may decrease soil moisture, thereby diminishing any positive effect of warming. Since plant species show individual responses to environmental change, responses may depend on community composition and vary across life form or functional groups. We warmed an alpine plant community at Niwot Ridge, Colorado continuously for four years to test whether warming increases or decreases productivity of life form groups and the whole community. We provided supplemental water to a subset of plots to alleviate the drying effect of warming. We measured annual above-ground productivity and soil temperature and moisture, from which we calculated soil degree days and adequate soil moisture days. Using an information-theoretic approach, we observed that positive productivity responses to warming at the community level occur only when warming is combined with supplemental watering; otherwise we observed decreased productivity. Watering also increased community productivity in the absence of warming. Forbs accounted for the majority of the productivity at the site and drove the contingent community response to warming, while cushions drove the generally positive response to watering and graminoids muted the community response. Warming advanced snowmelt and increased soil degree days, while watering increased adequate soil moisture days. Heated and watered plots had more adequate soil moisture days than heated plots. Overall, measured changes in soil temperature and moisture in response to treatments were consistent with expected productivity responses. We found that available soil moisture largely determines the responses of this forb-dominated alpine community to simulated climate warming.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
刚刚
wuanmuu发布了新的文献求助10
刚刚
魏傀斗发布了新的文献求助10
1秒前
1秒前
叶十七发布了新的文献求助30
1秒前
yjl完成签到,获得积分10
1秒前
单于灵竹完成签到,获得积分10
2秒前
科研通AI2S应助李锐采纳,获得10
3秒前
3秒前
xiaoxiao发布了新的文献求助10
3秒前
3秒前
幸运星发布了新的文献求助10
5秒前
5秒前
Corilla完成签到,获得积分10
5秒前
慕容半邪发布了新的文献求助10
5秒前
jasmine970000完成签到 ,获得积分10
6秒前
6秒前
赘婿应助坚强的赛凤采纳,获得10
7秒前
7秒前
8秒前
TT完成签到,获得积分10
8秒前
8秒前
田様应助品品采纳,获得10
8秒前
复杂鼠标完成签到,获得积分10
9秒前
nini发布了新的文献求助10
9秒前
顺利的伊应助满意的柏柳采纳,获得10
10秒前
杨森omg发布了新的文献求助10
10秒前
粗犷的灵松完成签到 ,获得积分10
10秒前
11秒前
huazhangchina发布了新的文献求助30
12秒前
12秒前
13秒前
传奇3应助kkkl采纳,获得10
13秒前
13秒前
13秒前
五十一笑声应助斩封采纳,获得100
14秒前
小莹完成签到,获得积分10
14秒前
儒雅奇男子完成签到 ,获得积分10
14秒前
齐桓完成签到,获得积分10
14秒前
Miller应助俏皮的以晴采纳,获得20
15秒前
高分求助中
Evolution 10000
Sustainability in Tides Chemistry 2800
The Young builders of New china : the visit of the delegation of the WFDY to the Chinese People's Republic 1000
юрские динозавры восточного забайкалья 800
A new approach of magnetic circular dichroism to the electronic state analysis of intact photosynthetic pigments 500
Diagnostic immunohistochemistry : theranostic and genomic applications 6th Edition 500
Chen Hansheng: China’s Last Romantic Revolutionary 500
热门求助领域 (近24小时)
化学 医学 生物 材料科学 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3148786
求助须知:如何正确求助?哪些是违规求助? 2799787
关于积分的说明 7837076
捐赠科研通 2457292
什么是DOI,文献DOI怎么找? 1307821
科研通“疑难数据库(出版商)”最低求助积分说明 628276
版权声明 601663