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Forests 2016, 7(3), 50; doi:10.3390/f7030050

The Effects of Poplar Plantations on Vascular Plant Diversity in Riparian Landscapes

1
Sustainable Forest Management Research Institute, University of Valladolid—INIA, Avenida Madrid 57, Palencia 34004, Spain
2
Department of Plant Production and Forest Resources, University of Valladolid (Palencia Campus), Avenida Madrid 57, Palencia 34004, Spain
3
INRA, UMR1202 BIOGECO F-33612 Cestas, France
4
University of Bordeaux, BIOGECO, UMR 1202, Pessac F-33400, France
5
Forest Botany Laboratory, Agroforestry Department, University of Valladolid, Avda. Madrid 44, Palencia 34071, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Diana F. Tomback
Received: 25 August 2015 / Revised: 15 February 2016 / Accepted: 18 February 2016 / Published: 25 February 2016
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Abstract

Riparian vegetation, which performs many key ecological functions, has been modified or lost at an alarming rate during the past century as a result of human activity. The aims of this study are (a) to investigate the effects of poplar plantations on plant diversity in riparian zones; and (b) to estimate the ecological implications of extending cover by poplar plantations. For this purpose, we assessed species richness, habitat indicator species and functional diversity based on Grime’s C-S-R strategies. We used non-metric multidimensional scaling to examine the role of environmental factors such as soil properties, forest structure and management. Disturbance, in particular the frequency of harrowing, led to a decline in species richness and modified the indicator species and functional diversity by favoring Ruderal (R) species at the expense Stress-Tolerant (S) and Competitor (C) species, which are better suited to riparian forest conditions. Poplar plantations should not be used as surrogates for riparian forests, and minimizing harrowing in poplar plantations promotes vascular plant diversity. Furthermore, reintroduction of herbs, ferns and geophytes with a high conservation value and low seed dispersal capacity is advisable from the sixth year after establishment, once harrowing for weed control has been completed. View Full-Text
Keywords: Populus x euramericana; clone I-214; hybrid; native; management; C-S-R theory; riparian communities; biodiversity Populus x euramericana; clone I-214; hybrid; native; management; C-S-R theory; riparian communities; biodiversity
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Martín-García, J.; Jactel, H.; Oria-de-Rueda, J.A.; Diez, J.J. The Effects of Poplar Plantations on Vascular Plant Diversity in Riparian Landscapes. Forests 2016, 7, 50.

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