Article Critique



Articlebackground and purpose

Seed dispersal has been identified to play a critical role when itcomes to the distribution of plant populations across differentsections. Much research has been carried out regarding the concept ofseed dispersal with little information being availed on frugivoreactivity that translates to the demographics and the evolutionaryconsequences of the plants. It has been difficult to establish thelinks that exist on the stage of the seed dispersal and therecruitment patterns. The purpose of the research is to assess theeffects of dispersal of seeds by the Purplish Jays and Chestnut-earedAracari on the growth of the population of the tree Guettardaviburnoides in Bolivian savannas (Loayza &amp Knight, 2010).

Themain argument presented by the article

The article tries to elaborate the concept that different species ofbirds have differing capabilities when it comes to the dispersalseeds from one place to another. Using the example of the PurplishJays and the Chestnut-eared Aracari, researchers identify that eachhas a unique ability when it comes to the dispersal of seeds (Loayza&amp Knight, 2010). According to the researchers, the variation isattributed to the feeding and post-feeding behaviors that dictate theseed-dispersal activity.

Evaluationof the article

How convincingis the argument

The authors present their research in a manner that depicts in-depthunderstanding of the topic under study. In explaining their concepts,research set out to carry studies on the birds and the way in whichthey disperse the seeds. They compare the findings of the same withwhat has been done by other researchers.

What the article assumes

In carrying out the research, authors made assumptions. The firstregards the survival and growth of the individuals that was assumedto be constant in time. Further, there was the assumption on theenvironmental variations regarding rainfall that has an impact on thegrowth of the seeds. The researchers made the assumptions based onthe calculation of an average of the patterns of rainfall.

Applicability of the article

The article is of critical importance as it brings out the concept ofseed dispersal and how different agents execute it. Specifically, theauthors use the example of purplish Jays and Chestnut-eared Aracarito explain how each affects the distribution of the seeds in aparticular habitat (Loayza &amp Knight, 2010). The article adds tothe preexisting knowledge in the field of ecology. Findings derivedfrom the study may be used to understand the seed dispersalmechanisms and how the same can be applied when assessing theecological patterns of various plants in a particular habitat.

Comparison of the article with other current theory and research

The article compares with the current theory regarding the seeddispersal by birds as agents. Particularly, there is the concept ofthe feeding pattern of the birds and how it does influence thedispersal of the seeds. Researchers further seek to understand theeffects of the seed dispersal to plants, research that has previouslydone by other researchers. For example Wenny (2000), Godinez-Alvarezand Jordano (2007) identify that not all seed dispersals arebeneficial for plants.

Response to article

The article is effective when it comes to the addition of knowledgeto the area of ecology specifically seed dispersal. The authorsconduct their research in a scientific approach making the findingsthat they get from the same valid. Further, there is a comparison towhat other researchers have done making the article stand out.


Godínez-Alvarez,H., Valiente-Banuet, A., &amp Rojas-Martínez, A. (2002). The roleof seed

dispersers in thepopulation dynamics of the columnar cactus Neobuxbaumia tetetzo.

Ecology,83(9), 2617-2629.

Loayza, A. P., &ampKnight, T. (2010). Seed dispersal by pulp consumers, not “legitimate”seed

dispersers,increases Guettarda viburnoides population growth. Ecology,91(9), 2684-


Wenny, D. G. (2000).Seed dispersal, seed predation, and seedling recruitment of aneotropical

montane tree.Ecological Monographs, 70(2), 331-351.