Ecology and Diversity of Weed Communities in the Northern Andes under Different Anthropogenic Pressures

Author:

Duque Yessica P.1ORCID,Giraldo-Sánchez Carlos E.2ORCID,Quijano-Abril Mario A.3ORCID,Rojas Jose M.34ORCID

Affiliation:

1. Facultad de Ciencias Agropecuarias, Universidad Católica de Oriente, Rionegro 054048, Colombia

2. Grupo de Investigación de Sanidad Vegetal, Universidad Católica de Oriente, Rionegro 054048, Colombia

3. Grupo de Investigación Estudios Florísticos, Herbario Universidad Católica de Oriente, Rionegro 054048, Colombia

4. Instituto de Biología, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia, Medellín 050001, Colombia

Abstract

Weeds can have both positive and negative effects on agricultural environments. However, despite the growing interest in the ecology of weed communities in agricultural areas, a few studies have been carried out in the northern region of the Andes of Colombia, where urban and agricultural expansion have generated highly disturbed scenarios. The aim of this study was to analyze the diversity of vegetation and weed seed banks in three agricultural production systems and a forest ecosystem in the northern Andes of Colombia. Hill numbers were used to compare diversity, Beta diversity to assess changes in composition, and range—abundance–dominance curves at different sites. Likewise, indicator species were analyzed to find species associations to each system. The results revealed differences in the composition of weeds between the forest ecosystem and the agricultural production systems, with higher equitability in the forest ecosystem and higher dominance in agricultural systems. Significant differentiation was observed among the dominant species within each agricultural system, particularly highlighting those species considered pests due to their unique life history traits. These traits confer them with a greater advantage in the face of various anthropogenic selection pressures. These findings highlight the impact of anthropogenic disturbances on the ecological dynamics of weed communities in different ecosystems, which should be considered when planning integrated weed management techniques.

Funder

“Dirección de Investigación Desarrollo e Innovación, Universidad Católica de Oriente (UCO)”

Publisher

MDPI AG

Subject

Nature and Landscape Conservation,Agricultural and Biological Sciences (miscellaneous),Ecological Modeling,Ecology

Reference75 articles.

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2. Weed Seed Bank Dynamics During a Five-Year Crop Rotation;Buhler;Weed Technol.,2001

3. The Evolution of Weeds;Baker;Annu. Rev. Ecol. Syst.,1974

4. Luken, J., and Thieret, J. (1997). Assessment and Management of Plant Invasions, Springer.

5. (2004). Weed Biology and Management, Springer.

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