Dataset Information


Responses of plant nutrient resorption to phosphorus addition in freshwater marsh of Northeast China.

ABSTRACT: Anthropogenic activities have increased phosphorus (P) inputs to most aquatic and terrestrial ecosystems. However, the relationship between plant nutrient resorption and P availability is still unclear, and much less is known about the underlying mechanisms. Here, we used a multi-level P addition experiment (0, 1.2, 4.8, and 9.6?g P m(-2) year(-1)) to assess the effect of P enrichment on nutrient resorption at plant organ, species, and community levels in a freshwater marsh of Northeast China. The response of nutrient resorption to P addition generally did not vary with addition rates. Moreover, nutrient resorption exhibited similar responses to P addition across the three hierarchical levels. Specifically, P addition decreased nitrogen (N) resorption proficiency, P resorption efficiency and proficiency, but did not impact N resorption efficiency. In addition, P resorption efficiency and proficiency were linearly related to the ratio of inorganic P to organic P and organic P fraction in mature plant organs, respectively. Our findings suggest that the allocation pattern of plant P between inorganic and organic P fractions is an underlying mechanism controlling P resorption processes, and that P enrichment could strongly influence plant-mediated biogeochemical cycles through altered nutrient resorption in the freshwater wetlands of Northeast China.


PROVIDER: S-EPMC4309954 | BioStudies | 2015-01-01T00:00:00Z

REPOSITORIES: biostudies

Similar Datasets

2018-01-01 | S-EPMC6206216 | BioStudies
1000-01-01 | S-EPMC3962245 | BioStudies
1000-01-01 | S-EPMC5719051 | BioStudies
2017-01-01 | S-EPMC5732191 | BioStudies
2018-01-01 | S-EPMC5996283 | BioStudies
2020-01-01 | S-EPMC7505080 | BioStudies
2020-01-01 | S-EPMC7769775 | BioStudies
2013-01-01 | S-EPMC3871644 | BioStudies
2020-01-01 | S-EPMC7595164 | BioStudies
2020-01-01 | S-EPMC7570192 | BioStudies